Abstract: An exemplary tunable circuit includes an inductor coupled to a node and a first capacitor coupled to the node. The tunable circuit also includes a variable capacitor coupled to the node, such that a total capacitance of the tunable circuit depends on a fixed capacitance of the first capacitor and a variable capacitance of the variable capacitor. In an example, the inductor and the first capacitor are both included in a passive device and the variable capacitor is in a semiconductor device. The variable capacitor allows the total capacitance to be modified for the purpose of, for example, calibrating the capacitance to account for manufacturing variations, and/or adjusting to a frequency range of operation used by wireless devices in a region of the world. The first capacitor may be a higher quality capacitor providing a larger portion of the total capacitance than the variable capacitor.

Abstract: There is provided a radio-frequency module that can reduce communication signal loss in both the case of employing one communication band of multiple communication bands and the case of employing two or more communication bands together. A radio-frequency module includes a first switching circuit and matching circuits. The matching circuits are provided individually for a first transmission path, a second transmission path, and a third transmission path. When communications are performed by using only a first communication band, the first switching circuit selects the first transmission path. When communications are performed by using together the first communication band and the second communication band, the first switching circuit selects the second transmission path and the third transmission path.

Abstract: Systems and methods are provided for hopping a digitally controlled oscillator (DCO) among a plurality of channels, wherein a gain of the DCO KDCO is a nonlinear function of frequency. A first normalized tuning word (NTW) corresponding to a first channel of the plurality of channels is generated. A first normalizing gain multiplier X is generated based on the nonlinear function of frequency, on an estimate of the nonlinear function of frequency, at a first frequency corresponding to the first channel. The first NTW is multiplied by the first X to obtain a first oscillator tuning word (OTW). The first OTW is input to the DCO to cause the DCO to hop to the first channel. A system for hopping among a plurality of channels at a plurality of respective frequencies comprises a phase-locked loop (PLL), a digitally controlled oscillator (DCO), a multiplexer, and an arithmetic module.

Abstract: An illustrative example antenna device includes a substrate, a transmission line supported on the substrate, and a plurality of conductive patches supported on the substrate. Each conductive patch has a first end coupled to the transmission line and a second end coupled to ground. The plurality of conductive patches are arranged in sets including two of the conductive patches facing each other on opposite sides of the transmission line.

Abstract: An antenna system having a Vivaldi antenna configured to be impedance matched to antenna impedance Za at and above but not below a frequency fc; a Field-Effect-Transistor buffer coupled to the Vivaldi antenna, the length of the coupling between the antenna terminals and the buffer being of a distance much less than a wavelength at frequency fc, the buffer configured to present a high impedance at frequencies substantially <fc, the buffer output impedance further configured to be matched to a system impedance Z0 at frequencies both above and below fc.

Abstract: A method is provided for remote control. Peripheral component interconnect express (PCI-E) is used for controlling with universal serial bus (USB) type-C (USB-C). A controlling terminal inputs a control signal of switching through a user interface. The controlling terminal transfers the control signal to a PCI-E connector of an image capture unit through a first port. After being handled and transformed by a processing device, the control signal is transferred with a USB-C connector of the image capture unit to at least one controlled terminal through a second port. Thus, the image capture unit is expanded in function to obtain keyboard-video-mouse switch (KVM Switch) among the category of image capturing cards. In summary, with a remote connection, a controlling terminal remotely controls a controlled terminal while simple flow, enhanced speed, and effective cost-down are achieved.

Abstract: A signal processing apparatus for controlling exposure to wireless communication includes processing circuitry configured to control transmission through a first antenna module based on a reflection coefficient of a second antenna module, the first antenna module configured for wireless communication in a first frequency band, the second antenna module configured for wireless communication in a second frequency band, the second frequency band being a lower frequency band than the first frequency band.

Abstract: Disclosed is an electronic device having an enhanced emission capability and including battery, at least one first antenna provided at a front of the battery, and at least one second antenna provided at a rear of the battery, wherein the at least one first antenna and the at least one second antenna may include a magnetic body and a conducting wire that is wound around the magnetic body multiple times.

Abstract: Disclosed is a double-path switching TX power detection circuit. A first detection module is separately connected to a power supply, a first radio frequency connector, and a second radio frequency connector; a second detection unit is connected to the second radio frequency connector; the first detection module and the second detection module control a current path of the power supply according to access states of the first radio frequency connector and the second radio frequency connector, respectively; the first detection module outputs a corresponding detection level signal, to determine whether a switching TX power function is enabled or disabled.

Abstract: An electronic device with an antenna-connectable connector is provided. The electronic device includes a wireless communication circuit configured to receive wireless communication data and a universal serial bus (USB) type-C connector including a housing forming an outer surface of the connector, an opening formed in at least a portion of the outer surface to allow a header-type external connector to be coupled to the connector in a forward direction or a reverse direction, and a board disposed inside the opening, the board having a first surface on which a plurality of first pins corresponding to the forward direction are arranged and a second surface on which a plurality of second pins corresponding to the reverse direction are arranged.

Abstract: Disclosed is a signal source estimation method and apparatus performing the same, the signal source estimation method including acquiring first reception signals received by first receivers, among signals radiated from signal sources, selecting second receivers receiving reception signals to be used to estimate the signal sources, from among the first receivers based on the first reception signals, and detecting the number of signal sources based on second reception signals received by the second receivers.

Abstract: A cell site can be configured to have a first group of antennas arranged to provide coverage around the cell site and a second group of interleaved antennas that are interleaved between the antennas of the first group. The two groups can communicate at different frequency sets so that the two groups do not interfere with one another. Service nulls of one group that would otherwise be created by interference and low RSSI between antennas from the same group can be covered by the main beam of the other group, which can significantly improve SINR.

Abstract: Systems and methods are provided for hopping a digitally controlled oscillator (DCO) among a plurality of channels, wherein a gain of the DCO KDCO is a nonlinear function of frequency. A first normalized tuning word (NTW) corresponding to a first channel of the plurality of channels is generated. A first normalizing gain multiplier X is generated based on the nonlinear function of frequency, on an estimate of the nonlinear function of frequency, at a first frequency corresponding to the first channel. The first NTW is multiplied by the first X to obtain a first oscillator tuning word (OTW). The first OTW is input to the DCO to cause the DCO to hop to the first channel. A system for hopping among a plurality of channels at a plurality of respective frequencies comprises a phase-locked loop (PLL), a digitally controlled oscillator (DCO), a multiplexer, and an arithmetic module.

Abstract: An electronic device with an antenna-connectable connector is provided.

Abstract: A wire harness includes plural electric wires provided with a connecting unit at an end portion of the plural electric wires, a first antenna connected to the connecting unit and installed in a wireless terminal, and a second antenna connected to at least one of the plural electric wires. An interval between the first antenna and the second antenna is equal to or longer than 0.3?.

Abstract: A wireless communication system disposed at a wearable electronic device. The wearable electronic device includes a metallic accommodating housing and a first metallic curved piece. The first metallic curved piece is protrudingly disposed at one side of the metallic accommodating housing. The wireless communication system includes a circuit board, a first insulation cover and a first loop antenna. The circuit board is coupled with the first loop antenna to generate a first wireless radio-frequency signal. The first insulation cover surrounds the first metallic curved piece. The first antenna generates a first band and a second band by resonance according to the first wireless radio-frequency signal after electromagnetically coupled with the first metallic curved piece.

Abstract: A cell site can be configured to have a first group of antennas arranged to provide coverage around the cell site and a second group of interleaved antennas that are interleaved between the antennas of the first group. The two groups can communicate at different frequency sets so that the two groups do not interfere with one another. Service nulls of one group that would otherwise be created by interference and low RSSI between antennas from the same group can be covered by the main beam of the other group, which can significantly improve SINR.

Abstract: A base station may comprise a first antenna connected to a first transceiver, a first multiplexer, and a second multiplexer. The base station may comprise a second antenna connected to a second transceiver, the first multiplexer, and the second multiplexer. The base station may comprise a first circulator connected to the first transceiver and the first multiplexer. The base station may comprise a second circulator connected to the second transceiver and the first multiplexer. The base station may comprise a third circulator connected to the first transceiver and the second multiplexer. The base station may comprise a fourth circulator connected to the second transceiver and the second multiplexer.

Abstract: A cell site can be configured to have a first group of antennas arranged to provide coverage around the cell site and a second group of interleaved antennas that are interleaved between the antennas of the first group. The two groups can communicate at different frequency sets so that the two groups do not interfere with one another. Service nulls of one group that would otherwise be created by interference and low RSSI between antennas from the same group can be covered by the main beam of the other group, which can significantly improve SINR.

Abstract: Disclosed are an antenna module and a mobile terminal having the same. The antenna module includes: a first member and a second member configured to operate as radiators of an antenna for transmitting/receiving radio signals; a first feeding unit configured to feed the first and second members; and a transmission line configured to connect the second member to the first feeding unit so that, when the first member forms a magnetic field in a near field, the second member forms an electric field.

Abstract: A mobile device is described that stores and renders content. Access to certain content is predicated at least upon receiving a particular wireless signal from an external or separate device that has previously been associated with the mobile device or with content stored on the mobile device.

Abstract: Provided are an apparatus and a method for a remote control in a portable communication system. The portable communication system includes a remote-controlling terminal which is connected to a remote-controlled terminal using a message necessary for a remote control function to perform a remote control function; and the remote-controlled terminal which is connected to the remote-controlling terminal and performs an operation according to a request of the remote-controlling terminal.

Abstract: There is provided a communication device and method for contactless short range communication between a device and a terminal. An exemplary communication device comprises a communication component for contactless short range communication with a terminal. The exemplary device also comprises a slave element adapted to execute at least one application for executing transactions between the communication component and the terminal, wherein the slave element is coupled to the communication component via a first interface and wherein the slave element can be coupled to a secure master element via a second interface, the master element being adapted to control the slave element before a transaction is executed using the application.

Abstract: A device is disclosed that includes a control module and a gain estimation module. The control module is configured to superimpose two non-zero values on a frequency control word to respectively generate a first and a second modified fractional reference phase signals, under a condition that a fractional part of the frequency control word is smaller than a predetermined value. The gain estimation module is configured to calculate a first and a second estimated gain values respectively based on the first and the second modified fractional reference phase signals. The control module is further configured to calculate an estimated digital-to-time converter gain value based on an interpolation of the first and the second estimated gain values.

Abstract: A diversity receiver switch includes at least one second stage switch configured to communicate with a transceiver. The diversity receiver switch may also include at least one first stage switch coupled between a diversity receiver antenna and the second stage switch(es). The first stage switch(es) may be configured to handle a different amount of power than the second stage switch(es). The diversity receiver switch may include a bank of second stage switches configured to communicate with a transceiver. A first stage switch may be configured to handle more power than each switch in the bank of second stage switches. Alternatively, the diversity receiver switch include a bank of first stage switches coupled between the diversity receiver antenna and a second stage switch. The second stage switch may be configured to handle more power than each of the first stage switches.

Abstract: A control device includes a first transceiver for communicating first control data with a first plurality of devices that utilize the millimeter wave frequency band in accordance with a first protocol, wherein the first transceiver utilizes the millimeter wave frequency band in accordance with the first protocol. A second transceiver communicates second control data with a second plurality of devices that utilize the millimeter wave frequency band in accordance with a second protocol, wherein the second transceiver utilizes the millimeter wave frequency band in accordance with the second protocol. A resource controller allocates resources of the millimeter wave frequency band to the first plurality of devices and the second plurality of devices based on the first control data and the second control data.

Abstract: Methods and systems for receiving in-phase and quadrature (I and Q) radio frequency (RF) signals without a phase shifter utilizing a leaky wave antenna are disclosed and may include generating in-phase and quadrature signals using a leaky wave antenna coupled to one or more low-noise amplifiers (LNAs) on a chip and without a phase shifter. The RF I and Q signals may be communicated from the single leaky wave antenna using coplanar feed points and/or feed points on a top surface and a bottom surface of the single leaky wave antenna. The leaky wave antennas may be integrated on the chip, on a package to which the chip is affixed, and/or on a printed circuit board to which the chip is affixed. The RF I and Q signals may be amplified by the one or more LNAs and may down-convert the RF I and Q signals to baseband signals.

Abstract: A method for selecting the state of a reconfigurable antenna installed at either the receiver or transmitter of a communication system is provided. The proposed method uses online learning algorithm based on the theory of multi-armed bandit to perform antenna state selection. The selection technique utilizes the Post-Processing Signal-to-Noise Ratio (PPSNR) as a reward metric and maximizes the long-term average reward over time. The performance of the learning based selection technique is empirically evaluated using wireless channel data. The data is collected in an indoor environment using a 2×2 MIMO OFDM system employing highly directional metamaterial Reconfigurable Leaky Wave Antennas. the learning based selection technique shows performance improvements in terms of average PPSNR and regret over conventional heuristic policies.

Abstract: A directional notch filter for simultaneous transmit and receive of wideband signals comprises an antenna, an antenna match, a receiver, a power combiner, a first directional coupler, a second directional coupler and a shaping filter accepting a signal and producing a compensation signal as a replica of an antenna reflection transfer function, wherein the first and second directional couplers produce signals and portions of signals received by the antenna and sent to the receiver via the power combiner. The receiver can produce a receiver signal and the first directional coupler can produce a first signal as a portion of an overall signal received by the antenna, the first signal comprising at least reflection of a signal from the power amplifier and the second directional coupler samples a small portion of the receiver signal, said second directional coupler producing a second signal.

Abstract: An antenna system including a loop antenna including a conductor; and a magnetic gain element positioned in an aperture defined by the loop antenna, the magnetic gain element including a magnetic material that has a relative permeability greater than one for an operating frequency range, the magnetic gain element configured to increase a magnetic flux density associated with a received magnetic-field component of an incident electromagnetic wave wherein a loop output voltage induced in the loop antenna is based, at least in part, on the increased magnetic flux density.

Abstract: A control device includes at least one communication interface for communicating first control data with at least one first communication device that utilizes the millimeter wave frequency band in accordance with a first protocol and further for communicating second control data with at least one second communication device that utilizes the millimeter wave frequency band in accordance with a second protocol. A resource controller allocates resources of the millimeter wave frequency band to the at least one first communication device and the at least one second communication device based on the first control data and the second control data.

Abstract: A method and apparatus controls diversity reception in a wireless communication device. By determining a value based on a number of active set pilot signals received from a set of base stations, the wireless communication device dynamically enables or disables diversity reception. Diversity reception can be controlled by adjusting a diversity threshold based on the determined value. A channel quality indicator of a channel is measured and compared against the adjusted diversity threshold. The diversity reception mode is then enabled or disabled based on the comparison. For example, if the number of active pilot signals is above a predetermined value, indicating “good” coverage, the diversity threshold is decreased. The measured channel quality indicator is compared against the adjusted threshold, and diversity reception is enabled when the channel quality indicator is less than the decreased diversity threshold.

Abstract: In the embodiment, a communication device is provided including a substrate, an antenna mounted on the substrate, a first communication unit which transmits or receives a first signal via the antenna, a terminal provided on the substrate, a signal wire one end of which is connected to the terminal, a conductor plate connected to the other end of the signal wire, and a second communication unit which transmits or receives a second signal via the conductor plate. A sum length of a line length of the signal wire and half a circumferential length of the conductor plate is equal to integral times of half the wavelength of the resonance frequency of the antenna.

Abstract: The present invention relates to a method for assembling a self-contained audio/antenna module for a portable communication device, the method comprising the steps of incorporating, into the audio/antenna module, one or more transducers, said incorporation comprising, for at least one transducer, the steps of custom designing and implementing a membrane structure for the at least one transducer in accordance with design constrains provided by an audio/antenna module casing, and incorporating a standard, prefabricated magnetic circuit into the audio/antenna module, said magnetic circuit being adapted to displace the membrane structure of the at least one transducer in accordance with incoming audio drive signals. The invention further relates to an audio/antenna module manufactured according to the above-mentioned method.

Abstract: An apparatus comprising a first substrate, a second substrate, and one or more embedded devices. A lower surface of the first substrate generally has disposed thereon a plurality of first lines comprising a thin-film conductive material. An upper surface of the second substrate generally has disposed thereon a plurality of second lines comprising the thin-film conductive material. The plurality of second lines is generally arranged orthogonally to the plurality of first lines. The lower surface of first substrate generally faces the upper surface of the second substrate and the substrates are generally separated by a predefined distance. The one or more embedded devices are generally coupled between one or more of the first lines and one or more of the second lines. The embedded devices are generally configured to temporarily electrically connect the respective lines to form a radiating structure during an RF operation.

Abstract: An electronic apparatus includes: a first molded body; a second molded body which composes housing with the first molded body; a first conductive pattern provided in the housing; a second conductive pattern provided on an outer surface of the housing; and a first conductive member. The first conductive member passes through a gap of a mating face between the first molded body and the second molded body. The first conductive member connects the first conductive pattern and the second conductive pattern.

Abstract: Methods and systems for an integrated voltage controlled oscillator (VCO)-based transmitter and on-chip power distribution network are disclosed and may include supplying bias voltages and/or ground to a chip utilizing conductive lines. One or more VCOs and low-noise amplifiers (LNAs) may each be coupled to a leaky wave antenna (LWA) integrated in the bias voltage and/or ground lines. One or more clock signals may be generated utilizing the VCOs, which may be transmitted from the LWAs coupled to the VCOs, to the LWAs coupled to the LNAs. RF signals may be transmitted via the LWAs, and may include 60 GHz signals. The LWAs may include microstrip and/or coplanar waveguides, where a cavity length of the LWAs may be dependent on a spacing between conductive lines in the waveguides. The LWAs may be dynamically configured to transmit the clock signals at a desired angle from a surface of the chip.

Abstract: A receiver of an object finder includes an antenna to receive a signal from a transmitter associated with the receiver, a PIN diode having a first terminal coupled with the antenna, and having a resistance that increases as a current flows therethrough decreases, and vice versa, a variable resistor coupled with the first terminal of the PIN diode to control the amount of a current flowing into the PIN diode, and a radio frequency integrated circuit (RF IC) having a first pin electrically coupled with second terminal of the PIN diode to receive the signal from the antenna via the PIN diode.

Abstract: A radio communication device may be provided. The radio communication device may include: a receiver configured to receive data using an antenna on a first carrier and a second carrier; an operation mode determination circuit configured to determine an active antenna operation mode based on information of the first carrier and information of the second carrier; and an antenna controller configured to control the antenna to operate in the determined active antenna operation mode.

Abstract: In a relay system, a relay node (RN) may communicate with a donor base station (BS) via a backhaul link. For example, the RN may receive control information from the donor BS over the backhaul link. The control information may be transmitted by the donor BS using a specific aggregation level. The RN may decode the control information by monitoring search spaces associated with various aggregation levels. When two or more search spaces are overlapped, decoding candidates of different aggregation levels of the same starting control channel element (CCE) index may result in a successful control information decoding, when actual control information transmission may use only one of the aggregation levels. Such a possibility may result in ambiguous decoding of the control information. Certain aspects of the present disclosure generally relate to handling the ambiguous decoding.

Abstract: An antenna includes: a differential linear antenna that includes two antenna elements, which have a predetermined length, arranged so as to be separated from each other for to be symmetrical with respect to a line that becomes a reference and provided with voltages having opposite polarities; and a patch antenna having a flat plate shape which is arranged to be parallel to a plane, on which the differential linear antenna is arranged, and in which a feeding point is disposed in an area interposed between virtual planes that are perpendicular to the plane and pass through extended lines of the antenna elements.

Abstract: A method and apparatus manages resources in a wireless communication system by transmitting a multi-carrier switch command message to an access terminal instructing the access terminal to switch between a diversity mode where each antenna module of a plurality antenna modules receives a single carrier signal transmitted at a single carrier frequency and a multi-carrier mode where a first antenna module of the plurality antenna modules receives a first multi-carrier signal transmitted at a first carrier frequency and a second antenna module receives a second multi-carrier signals transmitted at a second carrier frequency.

Abstract: An exemplary MIMO transceiver includes a first transmitting channel and a second transmitting channel. The first transmitting channel includes a first power amplifier and a first transmission line which are connected together in series. The second transmitting channel includes a second power amplifier. A common terminal of a first single pole double throw (SPDT) switch is connected to the second power amplifier. A first terminal of the first SPDT switch is connected to the first power amplifier through a second transmission line. A common terminal of a second SPDT switch is connected to the second power amplifier. A first terminal of second SPDT switch is connected to the first power amplifier through a third transmission line. A second terminal of the second SPDT switch is connected to a second antenna. The first power amplifier, the second transmission line, and the third transmission line cooperatively act as a balance power amplifier.

Abstract: A delta sigma modulator includes a filter circuit including an integrator having an operational amplifier; a first addition circuit provided between an output section of the filter circuit and an input section of a quantizer, and including a first resistive element; and a second addition circuit including at least one of a first feedforward circuit including a second resistive element or a first feedback circuit configured to feed back, as an analog signal, a digital output signal having been quantized by the quantizer, to an input section of the quantizer, wherein at least one of the first addition circuit or the first feedback circuit includes a phase compensator.

Abstract: A terminal and a method for making a touchscreen of the terminal, relate to the field of communications technologies and are invented for improving flexibility for receiving an frequency modulation (FM) broadcast. A terminal includes: a touchscreen; where the touchscreen includes a basal layer, a first conductive layer, a second conductive layer, and a touch layer, an antenna layer, and a separation layer, where the antenna layer is configured to dispose a FM antenna; the antenna layer and the separation layer are disposed between the basal layer and the first conductive layer or disposed between the second conductive layer and the touch layer, and the antenna layer is separated from the first conductive layer or the second conductive layer by using the separation layer. The embodiments of the present invention are mainly used in a terminal.

Abstract: The present invention relates to a wireless transmitter comprising a transmitter radio unit working a wireless transmitter comprising a transmitter radio unit working in the millimeter wave frequency band using a directional antenna and a bidirectional radio unit working in a frequency range different from said transmitter radio unit and using an omnidirectional antenna. The invention further relates to a wireless receiver and a wireless relay.

Abstract: The invention relates to a mobile telecommunication device (100) for establishing a telecommunication connection in the radio frequency range with a base station (102; 104; 1100), the mobile telecommunication device comprising; at least a first (106) and a second antenna (108), an electromagnetic shield (110) located between the first and the second antenna, a logic component (1000), wherein the first and the second antenna are adapted to transmit and receive telecommunication signals of the same frequency band, and wherein the logic component selects whether the first or the second antenna is used for the telecommunication connection with the base station.

Abstract: The present disclosure allows transmission of multiple signals between masthead electronics and base housing electronics in a base station environment. At least some of the received signals from the multiple antennas are translated to being centered about different center frequencies, such that the translated signals may be combined into a composite signal including each of the received signals. The composite signal is then sent over a single feeder cable to base housing electronics, wherein the received signals are separated and processed by transceiver circuitry. Prior to being provided to the transceiver circuitry, those signals that were translated from being centered about one frequency to another may be retranslated to being centered about the original center frequency.

Abstract: A high-frequency circuit comprising a switch circuit connected to an antenna terminal, first and second diplexer circuits connected to the switch circuit, first and second power amplifier circuits connected to the first diplexer circuit, first and second bandpass filter circuits connected to the first and second power amplifier circuits, a third bandpass filter circuit connected to the second diplexer circuit, a detection circuit disposed between the switch circuit and the first diplexer circuit, and a low-noise amplifier circuit disposed between the switch circuit and the second diplexer circuit.

Abstract: A cylindrical-shaped enclosure having tapered ends. The enclosure includes a module having a radio disposed on a printed circuit board and an antenna connected to the PCB. The enclosure has a main piece coupled to a lower piece and to a top piece, an optionally a fourth piece coupled to the top piece. A mounting subsystem is mounted to the main piece and includes a hole configured to receive therethrough a wires that connect to the printed circuit board. The antenna is configured to rotate about an axis that extends along a longest dimension of the enclosure. The module includes a metal plate to which the antenna is directly mechanically and electrically coupled without any cable such that the wires lack any control signals for controlling the antenna. The top and/or lower pieces can house any combination of a a camera, an environmental sensor, security equipment, or a lighting system.