Abstract: Aspects of a method and system for frequency control in a frequency shifting repeater are provided. In this regard, a reference frequency may be divided to generate a first pair of local oscillator (LO) signals, the first pair of LO signals may be divided to generate a second pair of LO signals. The two pairs of LO signals may be utilized to frequency shift a received signal for repeating the signal on a different frequency. The frequency shifted signal may be generated by down-converting the received signal utilizing the first pair of LO signals, up-converting the down-converted signal utilizing the second pair of LO signals, and combining the resulting up-converted signals. The reference frequency may be divided by a first scaling factor to generate the first pair of LO signal which, in turn, may be divided by a second scaling factor to generate the second pair of LO signals.

Abstract: One object of the present invention is to effectively utilize adaptive modulation and improve stability of wireless communication, without departing from standards, by independently controlling MCSs of retransmission data and usual data and using MCS suitable for each data. In the wireless communication system of the present invention, a frame, in which an error occurs, in both a transmitting device and a receiving device and the error part are specified, and MCS used in the frame is specified. Therefore, it is possible to modulate/demodulate the error part based on desired MCS without loading MCS on HARQ.

Abstract: Coverage for a wireless network is improved using a frequency shifting scheme. A wireless signal in a frequency band is shifted to another band, and carried in the shifted band to another location where the signal is shifted back to the original frequency band. The frequency shifting may utilize frequency shifting schemes such as mixer/filter and heterodyne. The wireless signal can be frequency shifted by converting it to other representing signals (such as I/Q components) and forming the frequency-shifted signal from the representations. The transmission medium may use dedicated wiring or existing service wiring in a residence or building, including LAN, telephone, AC power and CATV wiring. The system may be enclosed as a stand-alone unit, housed in integrated form as part of a service outlet or as a snap-on/plug-in module.

Abstract: A microwave frequency converter for a radar receiver is provided in which a frequency of a local oscillator of the microwave frequency converter can be prevented from interfering with an oscillation frequency of a magnetron included in the radar receiver and which can receive a signal from a considerably short distance. A voltage of an RF amplifier connected to the microwave frequency converter is synchronized with an oscillation output of the magnetron. The gate and drain voltages of a FET used in the RF amplifier are simultaneously switched OFF only during times before and after the magnetron performs oscillation, thereby switching an amplification function of the FET to an attenuation function thereof to increase a switching loss of the microwave frequency converter.

Abstract: A base station BS transmits downlink data to a relay station RS. A mobile station MS transmits uplink data to the relay station RS. The relay station RS determines a first modulation scheme for transmitting the uplink data to the base station BS, and determines a second modulation scheme for transmitting the downlink data to the mobile station MS. The relay station RS multiplies a symbol sequence obtained by the first modulation scheme by a symbol sequence obtained by the second modulation scheme for each symbol, and multicasts the multiplication result to the base station BS and the mobile station MS.

Abstract: A system for repeating radio signals to the outside of a structure, from transmitters operating within a structure that normally prevents radio transmissions from propagating out of the structure. A system for repeating radio signals to the inside of a structure, from transmitters operating outside a structure that normally prevents radio transmissions from propagating into the structure.

Abstract: A repeater device may be utilized to enable forwarding extreme high frequency (EHF) communication between EHF-enabled wireless devices. The repeater device may utilize spatial isolation to prevent and/or reduce interference between received and transmitted EHF RF signals, wherein reception and/or transmission of EHF RF signals in the repeater device may be performed via narrow beams that may enable minimal interference by transmit EHF RF signals to reception of EHF RF. The repeater device may utilize phased arrays to enable performing beamforming, and signal processing operations, including shift and/or amplitude adjustment, may be performed on signals received and/or transmitted via antenna elements in the phased arrays to enable beamforming during reception and transmission of EHF RF signals. Signal processing operations performed in the repeater device may be modifiable to enable continued spatial isolation between receive and transmit EHF RF signal in the repeater device.

Abstract: A repeater system is disclosed including a dual-fed donor patch antenna with a first microstrip antenna probe and a second microstrip antenna probe, phase shifting circuitry connected to the first microstrip antenna probe and the second microstrip antenna probe, wherein the phase shifting circuitry is configured to receive an input signal, supply a first signal to the first microstrip antenna probe, and supply a second signal to the second microstrip antenna probe using the input signal such that the first signal and the second signal are approximately 180 degrees out of phase with respect to each other. The repeater system also includes a coverage antenna (either a patch antenna or dipole antenna) and a housing connecting the dual-fed donor patch antenna and the coverage antenna. The housing is disposed to serve as a ground plane for the donor patch antenna and the coverage antenna.

Abstract: This inventive wireless communication system comprises a plurality of wireless communication devices (101) each including a radiating oscillator (1), a baseband signal generating unit (4) and a reception signal detecting unit (7).

Abstract: An embodiment of the present invention discloses a microwave relay receiving method and apparatus, a microwave relay transmitting method and apparatus, and a microwave relay node. The embodiment of the present invention relates to the field of communications technologies and is invented to enable free scheduling of microwave signals at low costs. The microwave relay receiving method includes: receiving a microwave signal; separating the microwave signal to obtain service information at an intermediate frequency band and control information at a low frequency band and sending the separated service information to a switch matrix; and sending the control information to the switch matrix so that a corresponding switch in the switch matrix is turned on and the service information is transmitted by the turned on switch.

Abstract: A system for distributing radio frequency signals using a data cable system includes a method and components that receive a radio frequency (RF) signal, identify at least one unoccupied channel on the data cable system, convert the RF signal to the frequency associated with an unoccupied channel as a converted signal, insert the converted signal into the cable, extract the converted signal from the cable as an extracted signal, convert the extracted signal to a transmission frequency as a transmission signal, and transmit the transmission signal at the transmission frequency.

Abstract: A repeater system combines co-located antennas, an intentional imbalance in signal amplification between downlink and uplink, stability management and an amplification indicator to create a user-installed solution to co-channel interference within cellular systems, in strong signal environments such as elevated locations or high-rise building. The invention may be particularly relevant to cellular systems, such as CDMA, that allow limited imbalance between uplink and downlink path losses, thus enabling the design of an inexpensive repeater with a weaker or non-existent uplink, and which creates moderate signal amplification for selected line-of-sight signals, defeating co-channel interference over a small area. The difference in signal amplification on the downlink and uplink is maintained at a level below the capacity of the system to support imbalance, guaranteeing reliable cellular calls.

Abstract: A device and method to compensate for distortions of amplitude that afflict systems for communicating through capacitive coupling. A circuit includes a first transmitter stage, a first receiver stage, and a first coupling capacitor, coupled between the first transmitter stage and the first receiver stage. The first receiver stage includes a calibration amplifier of a variable-gain type coupled between the first coupling capacitor and an output of the electronic circuit. The electronic circuit includes a reference channel formed by: a transmission calibration stage; a reception calibration stage; and a reference capacitor coupled between the transmission calibration stage and the reception calibration stage.

Abstract: A digital radio frequency transport system that performs bi-directional simultaneous digital radio frequency distribution is provided. The transport system includes a digital host unit and at least two digital remote units coupled to the digital host unit. The bi-directional simultaneous digital radio frequency distribution is performed between the digital host unit and the at least two digital remote units.

Abstract: A repeater having different input and output frequencies converts a signal received with the input frequency to a first intermediate frequency signal based on a local oscillating frequency for intermediate frequency conversion, and converts the first intermediate frequency signal to a second intermediate frequency signal by performing digital processing on the first intermediate frequency signal. Then, the repeater generates a first frequency tone signal that corresponds to a difference between the input and output frequencies, and generates a second frequency tone signal from the local oscillating frequency for intermediate frequency conversion and the first frequency tone signal. The repeater up-converts the second intermediate frequency signal to the output frequency based on the second frequency tone signal, and transmits the signal.

Abstract: A protocol independent interface for processing, within a mobile device, protocol aiding data received at a call processor with a Global Positioning System (“GPS”) interface, where the protocol aiding data is produced according to a Geolocation Server Station protocol is disclosed. The protocol independent interface may include a means for receiving, at the GPS interface, the protocol aiding data received at the call processor, means for converting the received protocol aiding data to interface data that is transparent to the Geolocation Server Station protocol, and means for passing the interface data to a GPS module.

Abstract: An irrigation system includes an irrigation controller, at least one environmental sensor and a vandal resistant data relay. The irrigation controller includes a two conductor hard wired communications link for accepting an actual value of at least one parameter of interest from an environmental sensor in the form of data encoded on the conductors via current modulation. The environmental sensor is mounted in a location remote from the irrigation controller. A circuit is connected to the environmental sensor for transmitting an RF signal representing an actual value of a parameter of interest detected by the environmental sensor. The vandal resistant data relay is connected to the two conductor hard wired communication link of the irrigation controller.

Abstract: An embodiment of the present invention discloses a microwave relay receiving method and apparatus, a microwave relay transmitting method and apparatus, and a microwave relay node. The embodiment of the present invention relates to the field of communications technologies and is invented to enable free scheduling of microwave signals at low costs. The microwave relay receiving method includes: receiving a microwave signal; separating the microwave signal to obtain service information at an intermediate frequency band and control information at a low frequency band and sending the separated service information to a switch matrix; and sending the control information to the switch matrix so that a corresponding switch in the switch matrix is turned on and the service information is transmitted by the turned on switch.

Abstract: A repeater device may be utilized to enable forwarding extreme high frequency (EHF) communication between EHF-enabled wireless devices. The repeater device may utilize spatial isolation to prevent and/or reduce interference between received and transmitted EHF RF signals, wherein reception and/or transmission of EHF RF signals in the repeater device may be performed via narrow beams that may enable minimal interference by transmit EHF RF signals to reception of EHF RF. The repeater device may utilize phased arrays to enable performing beamforming, and signal processing operations, including shift and/or amplitude adjustment, may be performed on signals received and/or transmitted via antenna elements in the phased arrays to enable beamforming during reception and transmission of EHF RF signals. Signal processing operations performed in the repeater device may be modifiable to enable continued spatial isolation between receive and transmit EHF RF signal in the repeater device.

Abstract: A broadcast satellite single wire interface. Such an interface comprises a low noise block amplifier module having multiple outputs, a plurality of filter banks, each filter bank coupled to each of the outputs of the low noise block amplifier module in a respective fashion and comprising a plurality of filters, and a plurality of analog-to-digital (A/D) converters, each A/D converter coupled to a filter in the plurality of filters in the plurality of filter banks in a respective fashion, wherein the A/D converters directly sample incoming downconverted broadcast satellite signals and the sampled incoming downconverted broadcast signals are output on a single wire in a stacked output.

Abstract: A method and system is described wherein an information signals is gated at a frequency that is a sub-harmonic of the frequency of the desired output signal. In the modulation embodiments, the information signal is modulated as part of the up-conversion process. In a first modulation embodiment, one information signal is phase modulated onto the carrier signal as part of the up-conversion process. In a second modulation embodiment, two information signals are multiplied, and, as part of the up-conversion process, one signal is phase modulated onto the carrier and the other signal is amplitude modulated onto the carrier. In a third modulation embodiment, one information signal is phase modulated onto the “I” phase of the carrier signal as part of the up-conversion process and a second information signal is phase modulated onto the “Q” phase of the carrier as part of the up-conversion process.

Abstract: A radio frequency tag for a radio frequency identification system is provided that includes an antenna and a receiver coupled to the antenna. The receiver receives and demodulates a message received on at least one frequency. A retransmit controller receives the message, determines a retransmit status for the message, and if the retransmit status is positive, initiates retransmission of the message for reception by another radio tag.

Abstract: Aspects of a method and system for frequency control in a frequency shifting repeater are provided. In this regard, a reference frequency may be divided to generate a first pair of local oscillator (LO) signals, the first pair of LO signals may be divided to generate a second pair of LO signals. The two pairs of LO signals may be utilized to frequency shift a received signal for repeating the signal on a different frequency. The frequency shifted signal may be generated by down-converting the received signal utilizing the first pair of LO signals, up-converting the down-converted signal utilizing the second pair of LO signals, and combining the resulting up-converted signals. The reference frequency may be divided by a first scaling factor to generate the first pair of LO signal which, in turn, may be divided by a second scaling factor to generate the second pair of LO signals.

Abstract: Systems, methods and apparatus for improving the coverage of a wireless network based on frequency shifting scheme. A wireless signal in a frequency band is shifted to another distinct band, and carried in the shifted band, using wired or wireless mediums to another location, wherein the wireless signal is shifted back to the original frequency band. The frequency shifting may make use of a conventional frequency shifting schemes such as mixer/filter and heterodyne. In one embodiment the wireless signal is frequency shifted by converting it to other representing signals (such as I/Q components) and forming the frequency-shifted signal from the representations. The system is may be used to increase in-door or outdoor coverage, as well as bridging between in-door and outdoor networks. The medium may use dedicated wiring or existing service wiring in a residence or building, including LAN, telephone, AC power and CATV wiring.

Abstract: A system (100) and method for providing high capacity voice and high speed data communication between user equipment terminals (UEs 104) and a public network (108). Generally, the system (100) includes a community Wireless Local Area Network (WLAN 102) having a centralized base transceiver station (CBTS 114) coupled to a public network (108), and several remote transceiver stations (RTSs 118) each coupled to several UEs (104), and, via a radio link, to the CBTS. In one embodiment, the CBTS (114) and RTSs (118) include a Global Systems for Mobile communication/General Packet Radio Service (GSM/GPRS) transceiver (148, 154) to provide data communication, and a WLAN transceiver (150, 156) to provide voice communication. Preferably, the WLAN transceiver (150, 156) is compatible with an open standard, such as IEEE 802.11.

Abstract: A repeater system combines co-located antennas, an intentional imbalance in signal amplification between downlink and uplink, stability management and an amplification indicator to create a user-installed solution to co-channel interference within cellular systems, in strong signal environments such as elevated locations or high-rise building. The invention may be particularly relevant to cellular systems, such as CDMA, that allow limited imbalance between uplink and downlink path losses, thus enabling the design of an inexpensive repeater with a weaker or non-existent uplink, and which creates moderate signal amplification for selected line-of-sight signals, defeating co-channel interference over a small area. The difference in signal amplification on the downlink and uplink is maintained at a level below the capacity of the system to support imbalance, guaranteeing reliable cellular calls.

Abstract: A technique for providing stable tracking performance to an AGC loop circuit comprises amplifying a wideband radio frequency signal; detecting signals and blockers adjacent to the radio frequency signal; lowering a gain of the radio frequency signal; mixing a local oscillator signal with the radio frequency signal; shifting a frequency of the radio frequency signal from a radio frequency to an intermediate frequency; continuously varying a gain of the intermediate frequency signal; converting the intermediate frequency signal into a digital output signal; comparing the digital output signal with predefined thresholds comprising an upper threshold and a lower threshold; switching a post mixer amplifier (PMA) to a high gain state when an input of a variable gain amplifier (VGA) is greater than the upper threshold, and switching the PMA to a low gain state when an input of the VGA is lower than the lower threshold.

Abstract: A wireless communication device having extremely simple constitution is used, and a low-cost and low power consumption wireless network system with high-quality signals is provided. The wireless network system comprises a plurality of wireless communication devices (101) each comprising a radiating oscillator (1) configured to integrate a transistor into a microwave oscillating resonator to generate a negative resistance and to commonly use a function of an antenna (11), an intermediate frequency signal generating section (4) and a receiving signal detecting section (7).

Abstract: A portable wireless communication apparatus is provided with antenna elements; a mobile phone signal processing circuit; a DTV tuner for receiving DTV low-band frequency signals and DTV high-band frequency signals; impedance matching circuits for the mobile phone signal processing circuit; and impedance matching circuits for the DTV tuner for receiving the DTV low-band frequency signals and DTV high-band frequency signals. A switch is changed to select either the DTV low-band frequency signals or the DTV high-band frequency signals, and output the selected signals to the DTV tuner. A tuner controller controls the switch to select the DTV high-band frequency signals by using the antenna element for transmission from the mobile phone signal processing circuit.

Abstract: A method for verifying alignment between first and second integrated devices coupled together using a reference and a coupling capacitor, including: transmitting a reference signal on a transmission electrode of the reference capacitor; receiving a coupling signal on a reception electrode of the reference capacitor; amplifying the coupling signal, generating a reception reference signal; generating a reception control signal as a function of the reception reference signal; transmitting a communication signal on an electrode of the coupling capacitor; receiving a reception signal on an electrode of the coupling capacitor; amplifying the reception signal, generating a first compensated signal; controlling a level of amplification of amplifying the coupling signal and the reception signal as a function of the reception control signal; and detecting a possible misalignment between the first and second devices based on an amplitude of the communication signal and an amplitude of the compensated signal.

Abstract: A service relay device is provided. The service relay device includes a receiving unit which receives a service signal, and a service processing unit which changes information regarding an order of changing frequency channels included in the received service signal, using replacement frequency channels, and broadcasts the service signal. The service processing unit includes a detecting unit which detects the information regarding the order of changing frequency channels, a storage unit which stores information regarding replacement frequency channels, an information processing unit which replaces the information regarding the order of changing frequency channels, using the replacement frequency channels stored in the storage unit, and a relay unit which broadcasts a service signal. As a result, service signals are provided stably even in the fringe area.

Abstract: A repeater system is supplied for providing wireless communications. In an example, a repeater system is supplied to receive user information with an antenna in a wireless signal at a first frequency and transfer the user information in an electrical signal at the first frequency. A frequency converter receives the user information in the electrical signal at the first frequency and transfers the user information in the electrical signal at a second frequency. A first coupler receives the user information in the electrical signal at the second frequency and transfers the user information in a capacitive signal. A second coupler receives the user information in the capacitive signal and transfers the user information in an electrical signal at the second frequency. A second frequency converter receives the user information in the electrical signal at the second frequency and transfers the user information in the electrical signal at the first frequency.

Abstract: An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

Abstract: Aspects of a method and system for inter integrated circuit (IC) communications utilizing a spatial multilink repeater are provided. In this regard, one or more circuits in an integrated circuit may be enabled to receive a signal and repeat the received signal to a plurality of target integrated circuits. The repeated signals may be generated by frequency shifting the received signal and a different frequency shift may be utilized for each of the repeated signals. In this regard, each of the repeated signals may be generated by quadrature down-converting the received signal by mixing it with a first local oscillator pair, up-converting the down-converted signal by mixing it with a second local oscillator pair, and adding or subtracting an in-phase portion of the up-converted signal with a quadrature-phase portion of the up-converted signal.

Abstract: Aspects of a method and system for frequency-shift based chip-to-chip communications may include receiving and/or generating modulation control information and demodulation control information within a chip comprising one or more receivers and one or more transmitters. One or more modulation frequencies may be adjusted and utilized to generate transmit signals by the one or more transmitters based on the received modulation control information, wherein the one or more modulation frequencies may be distinct. One or more demodulation frequencies may be adjusted and utilized to generate intermediate frequency signals by the one or more receivers based on the received demodulation control information wherein the one or more demodulation frequencies may be distinct. The modulation control information and the demodulation control information may be received via a communication device comprising said chip.

Abstract: A system and method of applying a known modification to a signal to enable a determination of a signal received by a first node is received directly from a second node or indirectly through a repeater. The repeater receives a primary signal and creates a secondary signal as a function of the primary signal and a known modification, wherein the known modification identifies the repeater. The primary signal is transmitted and injected with the secondary signal as the first signal to the primary receiver.

Abstract: A RF circuit includes a master PCB, a plurality of slave PCBs and a plurality of antennas. The master PCB includes at least two RF ICs and at least two transceiving diplexer groups for tranceiving different frequency bands. Each transceiving diplexer group includes a plurality of transceiving diplexers transceiving a same frequency band and electrically connected to the RF ICs via PCB tracks without intersection. Each slave PCB includes a frequency division diplexer electrically connected to at least two transceiving diplexers respectively belonging to different tranceiving diplexer groups for respectively transmitting different frequency bands. Each antenna electrically connects to one of the division diplexers.

Abstract: The present invention concerns analog signal repeater system solutions of the general kind. It concerns in particular stability with analog signal repeater systems.

Abstract: An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

Abstract: A demodulation section 13 receives a TDMA-TDD based phase-modulated burst signal of mobile communications and demodulates the burst signal by a synchronous detection system (or a quasi-synchronous detection system). The demodulation section 13 includes a frequency deviation compensation section and a carrier recovery section each having a loop filter 14 with three or more stages of time constants. The time constants are switched by a selector switch 15 based on a control signal from a demodulation control section 16. This achieves quick pull-in and jitter after convergence is minimized, thereby allowing highly efficient performance of frequency deviation compensation, etc. that is required for synchronous detection (or quasi-synchronous detection) without increasing the size of circuit.

Abstract: Partner relay systems and methods are provided in which relaying is performed by a pair of partner relays. Signals received from a base station are translated by a first of the pair of partner relays to a different transmission resource for communication between the pair of partner relays, and then upon reception by a second of the pair of partner relays, the signal is translated back to the original transmission resource and re-transmitted towards the receiver.

Abstract: An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

Abstract: Methods and systems for processing a signal with a corresponding noise profile are disclosed. Aspects of the method may comprise analyzing spectral content of the noise profile. At least one noise harmonic within the signal may be filtered based on said analyzed spectral content. The filtered signal may be limited. The noise profile may comprise a phase noise profile. The signal may comprise at least one of a sinusoidal signal and a noise signal. At least one filter coefficient that is used to filter said at least one noise harmonic may be determined. The filtering may comprise low pass filtering and the limiting may comprise hard-limiting the filtered signal. The signal may be modulated prior to the filtering. The signal may be downconverted prior to the modulating. At least one signal component of the signal may be downconverted.

Abstract: A notch filter suitable for attenuating certain frequencies of a radio-frequency signal includes an input for receiving the radio-frequency signal and an output for the output of a portion of the radio-frequency signal, first and second capacitive means, at least one inductor and a negative resistance circuit suitable for compensating the resistive losses of said at least one inductor. The inductor and the first and second capacitive means are placed to produce a resonator and the filter comprises a control device suitable for controlling the negative resistance circuit. The input impedance of the filter comprises a pole and a zero, with the pole depending on the second capacitive means and the zero depending on both the first and second capacitive means. The first and second capacitive means are variable and the control device is suitable for controlling the first and second capacitive means.

Abstract: An active antenna system for a mobile communications network and a method for relaying radio signal in the mobile communications network is disclosed. The active antenna system comprises a plurality of antenna elements for relaying radio signals at a first frequency band. The plurality of antenna elements is connected to a plurality of signal paths. A plurality of signal inputs for inputting radio signals at a second frequency band is connected to the plurality of signal paths. A plurality of first mixers in the plurality of the signal paths converts the frequency of the radio signals between the first frequency band and the second frequency band. A plurality of first local oscillators is connected to the plurality of first mixers and a single reference oscillator can be connected through a plurality of first dispersion elements to different ones of the plurality of local oscillators through a plurality of first oscillator signal paths and to a digital signal processor.

Abstract: System and method for use in a hybrid multispot satellite broadcasting system comprising at least one satellite (S; S1; S2) for multibeam broadcasting of beams in respective frequency bandwidths (F1; F2; F3), the system further comprising a plurality of terrestrial repeater (R1; R2; R3) for receiving, processing and re-transmitting said beams in a frequency bandwidth which is different from that of the bandwidth of the beam received. Each terrestrial repeater (R1; R2; R3) re-uses for terrestrial re-transmission a combination of bandwidths corresponding to different beams broadcast from said satellite to different beams.

Abstract: A receiver that can receive several initial signals modulated in a same initial frequency band and/or distinct initial frequency bands and generate a signal modulated in a transmission band to be transmitted on a coaxial cable, comprising a selector that can select several signals from among the received signals; for each selected signal, a mixer capable of transforming the selected signal into a signal at least partly in the transmission band, and a filter capable of extracting from the transformed signal a signal associated with a portion of the transmission band from among several at least partly distinct portions of the transmission band; and means for forming the signal modulated in the transmission band from signals associated with the transmission band portions.

Abstract: A method for frequency conversion within a satellite-based repeater system. An uplink radio frequency signal having a frequency fRF is received. A first and at least a second local oscillator signal having frequencies fL01 and fLO2, respectively, is generated. The uplink signal is mixed at a first frequency conversion stage with the first local oscillator signal to generate an intermediate signal having a frequency fMF. The intermediate signal is mixed at a second frequency conversion stage with the at least second local oscillator signal to generate a downlink signal having a frequency fIF. The generation and mixing of the signals are performed such that: fLO1 and fLO2>fRF and fIF fMF=fLO1?fRF, and fIF=fLO2?fMF.

Abstract: Improved gain control for a digital signal processing (DSP) repeater, such as a bi-directional repeater, is disclosed. A repeater includes a back-end subsystem which comprises, for each channel in a set of wanted frequency channels that are amplified by the repeater, a coupler (314) arranged to provide a monitor signal corresponding with an output channel power level. A feedback loop (306) receives the monitoring signal, and incorporates a power control circuit (308) that compares the monitored output channel power level with a predetermined maximum output signal level (310). A corresponding control signal is generated, and provided to a variable attenuator (304) in order to maintain the individual output channel power level at or below the maximum output signal level (310). Advantageously, a DSP output level control function (404) is also provided, which maintains the output signal level of each digital channel below a maximum rated value for a digital-to-analogue converter (402).

Abstract: An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.