Abstract: An inductor that adjust characteristics of a transmit filter circuit is disposed so that the inductor and at least one of common paths, a matching circuit, a receive filter circuit, and receive paths connected to an output terminal of the transmit filter circuit define a propagation path due to magnetic-field coupling and/or electric-field coupling. This configuration does not require the addition of a circuit device to define the propagation path. It is thus possible to improve attenuation characteristics for an RF signal outside the frequency band of a transmitting signal and to improve isolation characteristics between a transmit filter circuit and a receive filter circuit without increasing the size of a radio-frequency module.

Abstract: A method of processing signals may include identifying a plurality of critical elements of a parameter vector based on one or more predefined criteria, wherein the parameter vector represents a relationship between the input signal vector and the output signal vector; identifying a reduced parameter update vector having a plurality of elements, wherein the elements are selected according to a criterion related to the relationship between the input signal vector and the output signal vector; updating the plurality of critical elements of the parameter vector using the reduced parameter update vector to generate an updated parameter vector, wherein the reduced parameter update vector has less elements than the parameter vector; and processing one or more signals associated with the input signal vector using the updated parameter vector.

Abstract: A wireless terminal and data receiving and transmitting methods thereof are described. When the wireless terminal receives data, an antenna is used for receiving receipt signals from an uplink band and a downlink band, allowing mixed signals to enter a duplexer. The duplexer separates receipt signals from the uplink band and downlink band, and passes the receipt signal from the downlink band through a downlink band receiving end and passes the receipt signal from the uplink band through a shift switch to enter a central processing unit for aggregation together.

Abstract: An Ethernet or other communications module can amplify and reinforce a signal received from a non-local source without requiring a transformer or other magnetic component. A semiconductor integrated difference amplifier circuit can be used to amplify and reinforce a differential mode component of the received signal, while also attenuating a common mode component of the received signal. A transmission compensation network can generate a phase-shifted version of a locally transmitted signal being placed on the same communication terminals as the received signal during full duplex communications, for cancellation of such locally transmitted signal at inputs of a local receiver circuit. This can enhance detection of the received signal generated by the non-local source.

Abstract: Embodiments provide a signal processing method, a transmitter, and a compressive sampling receiving device. The method includes: obtaining a periodic pseudo random sequence used when a compressive sampling receiving device performs frequency mixing. The method also includes selecting 2N information symbols from N radio signals; determining a precoding matrix D according to the periodic pseudo random sequence. The method also includes using the precoding matrix to perform precoding processing on the 2N information symbols to obtain 2N precoding results. The method also includes separately transmitting the 2N precoding results to the compressive sampling receiving device by using the 2N carriers.

Abstract: In a direct sequence spread-spectrum (DSSS) systems, such as CDMA, information is encoded in symbols using phase shift keying or quadrature amplitude modulation. Further, a transmitter applied a selected time shifted lag to each symbol to convey additional information. A receiver detects both the symbol data and the lag value. The receiver can use a hermetic matched filter matrix to identify the lag.

Abstract: A pre-5th-generation (5G) or 5G communication system for supporting higher data rates beyond 4th-generation (4G) communication system, such as a long term evolution (LTE), is provided. A method for performing a beamforming operation in a communication system supporting a frequency division-multiple input multiple output (FD-MIMO) scheme is provided. The method includes detecting a rough beam of a first dominant beam, detecting at least two codeword candidates based on the rough beam of the first dominant beam, and selecting one of the at least two codeword candidates as a final codeword.

Abstract: Described herein are networked (smart) living and work spaces, including a variety of different wireless nodes that may be distributed, inlcuing wall-mounted and/or retrofitted over existing electrical outlets and light switches, for proiding data streams to a digital hub or master controller. For example, described herein are wall-mounted, interactive sensing and audio-visual node device for a networked living/working space.

Abstract: Polarities of voltages on a plurality of electric wires are reversed with an H-bridge circuit applied in accordance with control information or data to be transmitted, information or data transmitted as change of polarities is found on the reception side, and the transmitted power is restored to direct current power through a bridge diode circuit and is used as power supplied to a load. Each load has a unique ID input and storage means, and the present invention is a communication method in which the unique ID is designated to the transmitted information or IDs are designated to groups to control a load. In addition, it is a method for spreading a PWM operation time to minimize noise generated in accordance with PWM driving on the reception side, In a direct current transmission and reception environment, data or a command signal for power demand response is mapped with the polarity of voltage and is transmitted to each customer, and it may be applied to the power demand response technique.

Abstract: Over the last few decades there has been major innovation in devices that use electricity (cell phones, computers, tablets, televisions), however, there has been little innovation in the mobility and accessibility of electricity itself on the small scale. At the moment, electricity is generally non-transferable on a personal level—if two individuals had cellphones, one at 100% and another at 0%, they could not share the available power between them. The present invention offers a solution to the issue of transferring electricity between cellular devices which enables electricity to be sharable and transferable in small scale daily situations.

Abstract: A magnetic field alignment method includes: transmitting a first signal through a first antenna and a second signal through a second antenna, wherein each of the first signal and the second signal includes an antenna identifier, and the first antenna and the second antenna are antennas used for a smart key (SMK) system installed in an electric vehicle (EV); receiving a response signal in response to the first signal and the second signal from a transponder in a location corresponding to a primary coil of the wireless charging system; and estimating a position of the primary coil based on a received signal strength of the first signal and a received signal strength of the second signal, which are included in the received response signal.

Abstract: An apparatus for a multiple-input multiple-output (MIMO) architecture is disclosed. The apparatus includes a first splitter-combiner (S-C) having a first transmission line port, a first transmit (TX) port, and a first receive (RX) port. Also included is a first N-plexer having a first power amplifier (PA) input, a first RX output, and a first antenna output for coupling to a first antenna. A first PA is coupled between the first TX port and the PA input, wherein the first RX output is coupled to the first RX port.

Abstract: Disclosed herein are a terminal and a base station in a distributed antenna system and an operation method thereof. A base station may include first and second transmitter points positioned at different places. The base station transmits a reference signal for channel quality measurement to the terminal. The terminal calculates a first value that is a ratio of a signal transmitted to the terminal and noise based on the received reference signal. Further, the terminal calculates a second value that is a ratio of interference by a first transmitter point and noise and a third value that is a ratio of interference by a second transmitter point and noise, based on the received reference signal. The terminal transmits information on the first to third values to the base station.

Abstract: A method for implementing an uplink MU-MIMO protocol comprising: transmitting a sounding announcement from a base station to a plurality of wireless user stations; receiving, at the base station, a respective sounding signal from two or more of the wireless user stations; determining the duration of a period by which each wireless user station from which a sounding signal has been received should offset its data transmission relative to the other wireless user stations from which a sounding signal has been received; sending control announcement information to each wireless user station from which a sounding signal has been received, the control announcement information including a spatial transmission scheme and timing correction information defining the period for which those user stations are to offset their data transmission from one another; receiving data from the wireless user stations; and processing the received data using the timing correction information and spatial transmission scheme.

Abstract: A method and an apparatus pertaining to improved multi-user multiple-input and multiple-output (MU-MIMO) communications and power saving for a set of wireless communication devices may involve transmitting a beacon frame to the set of wireless communication devices, with the beacon frame indicating a group identifier associated with a group of wireless communication devices of the set of wireless communication devices, where one or more wireless communication device associated with group is/are in powersave. An announcement frame may also be transmitted to the set of wireless communication devices, with the announcement frame indicating buffered packet to one or more wireless communication devices of the group of wireless communication devices associated with the group identifier. A response may be received from one or more wireless communication devices. A MIMO data packet may be transmitted to one or more wireless communication device in response to the receiving of the response.

Abstract: Embodiments are provided for cross-polarized antennas design with different down tilt angles that support versatile functionality, such as for MIMO or beamforming. An embodiment antenna circuit comprises a baseband signal processor, a pair of RF transmitters coupled to the baseband signal processor, a pair of PAs coupled to the RF transmitters, a 90°/180° hybrid coupler coupled to the RF transmitters, a pair of duplexers and two antennas coupled to the PAs. The two antennas are down tilted at different down tilt angles. A pair of signals is generated using the baseband signal processor, transmitted by the RF transmitters, and amplified using the PAs. Additionally, a 90° or 180° phase difference is introduced into the signals using the 90°/180° hybrid coupler. After the amplifying and introducing the phase difference, the signals are polarized at two different polarizations and down tilted at different down tilt angles using the two antennas.

Abstract: A method for providing user equipment access to millimeter wave stations through a microwave station includes receiving an indication of millimeter wave stations operating within a microwave coverage area of a microwave station. In a microwave band, information associated with the millimeter wave stations is broadcasted to user equipment in the microwave coverage area. A request is sent to the millimeter wave stations to transmit configuration signals over a microwave band. An instruction is transmitted over the microwave band to the user equipment to perform proximity measurements of the configuration signals. According to the proximity measurements, a request is sent to a particular millimeter wave station to transmit beamforming signals over a millimeter wave band. An instruction is transmitted over the microwave band to the user equipment to perform beamforming measurements of the beamforming signals. According to the beamforming measurements, the user equipment is switched to millimeter wave operation.

Abstract: Embodiments of a system and method for simultaneous high-speed multi-user beam tracking in a Wireless Network are generally described herein. A transmitting station (STA) may be configured to support directional wireless links with multiple receiving STAs in a high-mobility millimeter-wave (mm Wave) wireless network. The transmitting STA may include hardware processing circuitry configured to, for each of the multiple receiving STAs, transmit a packet over a directional wireless link between the transmitting STA and the receiving STA and receive transmit antenna performance metrics from the receiving STA. The packet may include a data portion, a receive training sequence, and a transmit training sequence that occupy different portions of the packet, and the transmission of the packet over the directional wireless link may include transmission of the data portion of the packet according to a current transmit antenna direction associated with the directional wireless link.

Abstract: According to one embodiment, a wireless communication device includes a transmitter configured to multiplex and transmit a plurality of first frames; a receiver configured to receive a plurality of second frames that represent acknowledgement responses to the plurality of first frames and are multiplexed and transmitted; and controlling circuitry. The first information necessary for transmission of the plurality of second frames is set in the plurality of first frames. The controlling circuitry is configured to separate the plurality of second frames based on the first information.

Abstract: A method includes a step of reading in the radio data signal and a radio data clock signal, a step of integrating a signal that is a function of the radio data signal and/or the radio data clock signal in order to determine an integral value curve, a step of decoding radio data signal information from the integral value curve, using the radio data clock signal and/or a phase position of the radio data signal, a step of ascertaining radio data signal quality information which represents the credibility of the decoded radio data signal information, using the radio data signal and/or the phase position of the radio data signal, and a step of providing the radio data signal information and the radio data signal quality information in order to provide a conditioned radio data signal.

Abstract: The present invention relates to a method and device for measuring channel quality by a base station having a two-dimensional active antenna system including multiple antennas. Particularly, the method comprises: receiving channel state information (CSI) generated on the basis of a first reference signal relating to a part of multiple antennas, from a terminal; selecting a precoding and a rank based on a precoding matrix indicator (PMI) and a rank indicator (RI) of the received CSI; generating a port by applying the selected precoding and the selected rank; through the generated port, transmitting, to the terminal, a physical downlink shared channel (PDSCH) and a demodulation-reference signal (DM-RS) configured for the terminal; and receiving, from the terminal, a channel quality indication (CQI) feedback for reducing a mismatch for the CQI of the CSI, wherein the CQI feedback may be generated based on the DM-RS.

Abstract: A method for performing a multi-beamforming training and a device using the same are provided. An initiator transmits a first beacon frame for beamforming training on a first channel during a sector sweep and transmits a second beacon frame for beamforming training on a second channel during the sector sweep. The first beacon frame comprises a multi-channel indicator that indicates that beamforming training is performed on the first and second channels.

Abstract: A communications apparatus and method are provided. The communications method for an apparatus capable of Carrier Aggregation (CA), wherein the apparatus includes a plurality of processing engines and antennas, includes the steps of determining whether the apparatus is configured in a single component carrier for a first group of the antennas, and activating a second group of the antennas when the apparatus is configured in the single component carrier. T the first group of antennas are configured for a first part of the processing engines and the second group of antennas are configured for a second part of the processing engines, and the first part of the processing engines and the second part of the processing engines share a MIMO detector.

Abstract: Provided is control information related to polarizations of antennas for MISO communication. The control signal generator generates polarization information indicating whether antennas used for transmission by MISO have only a first polarization or have a second polarization as well as the first polarization. With this structure, the present invention allows for the use of combinations of SISO, MISO and MIMO, taking the polarization of antennas. Furthermore, the present invention enables the receiver to reduce the power consumption.

Abstract: Example methods, apparatus, systems and articles of manufacture (e.g., physical storage media) to extend wireless signal coverage with drones are disclosed. Example methods disclosed herein to extend wireless signal coverage include determining whether a status of a wireless communication link being received at a first device from a second device meets a trigger condition. Such disclosed example methods also include, after determining the status meets the trigger condition, deploying a drone to a target location determined based on a first device location associated with the first device and a second device location associated with the second device, the drone being equipped with a signal extender capable of extending the wireless communication link.

Abstract: A method for air to ground uplink synchronization comprises initiating a downlink synchronization of user equipment onboard an aircraft with a ground base station; computing a range to the base station based on a downlink path loss; selecting an initial time advance (TA) value from a set of predetermined TA values based on the range; and sending a first random access channel (RACH) request with the initial TA value to the base station in a first attempt to synchronize an uplink signal and attach the user equipment to a network. If the user equipment fails to attach, a next RACH request is sent with a next TA value to the base station, in a next attempt to synchronize the uplink signal and attach the user equipment to the network. If the user equipment fails again to attach, the method is repeated until the user equipment is attached to the network.

Abstract: Systems and methods for providing mobility across satellite beams, are described. The system includes a first core node, a second core node in communication with the first core node at layer-2 of the OSI model (L2), and a first gateway in communication, at L2, with the first core, the first gateway configured to provide access to a first spot beam at a first location. The system further includes a second gateway in communication, at L2, with the second core node, the second gateway configure to provide access to a second spot beam at a second location, and a mobile device, at the first location, in communication with the first gateway via the first spot beam, wherein the mobile device is assigned an IP address by the first core node. The mobile device moves from the first location to the second location.

Abstract: A satellite reception assembly that provides satellite television and/or radio service to a customer premises may comprise a wireless interface via which it can communicate with other satellite reception assemblies. Wireless connections between satellite reception assemblies may be utilized for providing satellite content between different satellite customer premises. Wireless connections between satellite reception assemblies may be utilized for offloading traffic from other network connections.

Abstract: The present invention is for supporting carrier aggregation (CA) using multiple carriers in a wireless communication system and provides a terminal operation method comprising the steps of receiving downlink signals via downlink frequency division duplex (FDD)-time division duplex (TDD) carrier aggregation (CA) using a first carrier operated in an FDD mode and a second carrier operated in a TDD mode and transmitting, via the first carrier, uplink signals corresponding to the downlink signals received via the first and second carriers. The present invention also includes embodiments other than the aforementioned embodiment.

Abstract: This invention solves the problem that, if a loss of signal or other anomaly occurs on a line side, intermittent problems occur in a signal outputted to a client side, resulting in trouble with subsequent signal processing. This optical-transceiver control circuit comprises a signal-generating means for generating a dummy signal that has approximately the same characteristics as an electrical signal generated from an optical signal inputted to an optical transceiver, a switching means for receiving an electrical signal and selecting and outputting either the received electrical signal or the generated dummy signal, and a controlling means for changing the signal selected by the switching means from the electrical signal to the dummy signal if a notification indicating an anomaly in the optical signal is inputted.

Abstract: [Problem] To provide an optical transmission/reception device, an optical communication system, an optical communication method, and a program which are capable of securing the confidentiality of information included in an optical signal even when the optical signal is transferred to a device that is not an original transmission destination device.

Abstract: Even in a case where light sources at an optical transmission-side and an optical reception-side are made into a common light source, a optical transmission function and an optical reception function are enabled to be used at a time.

Abstract: In an example, the present invention includes an integrated system on chip device. At least a pair of laser devices are associated with a channel and coupled to a switch to select one of the pair of laser devices to be coupled to an optical multiplexer to provide for a redundant laser device.

Abstract: A first transceiver and a method performed by the first transceiver for monitoring a fibre cable. The first transceiver is connectable to a second transceiver by the fibre cable. The transceivers employ SCM analogue modulation where baseband is dedicated for monitoring and the subcarriers are dedicated for data transmission. The method comprises receiving, from a device, at least one electromagnetic data signal to be transmitted towards the second transceiver on the fibre cable, and shifting the at least one data signal in the frequency domain. The method further comprises generating an electromagnetic test signal in a base band, combining the at least one data signal and the generated test signal, and modulating the combined data signal and test signal to respective optical carrier. The method further comprises transmitting the modulated data signal and generated test signal on the fibre cable towards the second transceiver.

Abstract: A gravitational logging method includes optically obtaining gravitational field measurements from one or more downhole or subsea sensor units. The method also includes inverting the gravitational field measurements as a function of position to determine a formation property. A related system includes one or more downhole or subsea sensor units to optically obtain gravitational field measurements. The system also includes a processing unit that inverts the gravitational field measurements as a function of position to determine a formation property.

Abstract: A computerized system and method for managing a passive optical network (PON) is disclosed. The system includes a detection and analysis module adapted for receiving uploaded measurement data from an optical line terminal (OLT) and at least one optical network terminal (ONT), and at least one of technical tools data, service failure data, and outside plant data. The detection and analysis module is adapted for determining a source of failure or potential failure in the PON by correlating the uploaded measurement data and the at least one of technical tools data and service failure data with information stored in a memory medium for the OLT and each ONT.

Abstract: A system for monitoring data traversing a bidirectional optical fiber includes a network tap. The network tap includes first and second network ports for bidirectional data transmission over a first optical fiber. The device includes first and second tap ports respectively associated with the first and second network ports. The first network port receives data transmitted in a first direction over the first optical fiber and at a first wavelength and provides the data to the second network port and to the first tap port. The second network port receives data transmitted in a second direction opposite the first direction over the first optical fiber and at a second wavelength different from the first wavelength and provides the data to the first network port and to the second tap port. The first and second tap the first and second tap ports provide the data to one or more network monitoring devices.

Abstract: A first and a second interconnection unit comprising a respective first and a second communication interface, a first and a second electro-optical converter, and a multiplexing unit, is disclosed. The first interconnection unit is adapted to receive electrically transmitted analog and digital information, convert said information into electrically transmitted information, and to multiplex the information so as to enable transmission over a bidirectional link. The second interconnection unit is adapted to receive and de-multiplex the transmitted analog and digital information, to convert it back into electrically transmitted analog and digital information, and to output said information. A system comprising the first and second interconnection units is also disclosed. The system is adapted for supplying both analog services and digital services with communication information over the bidirectional link.

Abstract: A transport apparatus includes: a client signal transceiving unit which transceives a client signal; a line signal transceiving unit which performs electric-optic conversion on a line signal to be transmitted, transmits an optical line signal, performs optic-electric conversion on a received line signal, and outputs an electrical line signal; and a plurality of signal processing units which perform signal processing on the client signal to generate the line signal to be transmitted and perform signal processing on the electrical line signal to generate the client signal.

Abstract: An optical transceiver comprises a transmitter configured to transmit a first signal, and a receiver coupled to the transmitter and configured to receive a first compensation, wherein the first compensation is based on a pattern-dependent analysis of the first signal, and provide the first compensation to the transmitter, wherein the transmitter is further configured to compensate a second signal based on the first compensation to form a first compensated signal, and transmit the first compensated signal. An optical transmitter comprises a digital signal processor (DSP) comprising a compensator, a digital-to-analog converter (DAC) coupled to the DSP, a radio frequency amplifier (REA) coupled to the DAC, and an electrical-to-optical converter (EOC) coupled to the REA. An optical receiver comprises an optical-to-electrical converter (OEC), an analog-to-digital converter (ADC) coupled to the OEC, and a digital signal processor (DSP) coupled to the ADC and comprising a calibrator.

Abstract: The invention comprises a multilevel optical signal system comprising two or more light source branches and an optical power-combiner, wherein each branch comprising a light source, an optical modulator and an electrical driver for the modulator, wherein each electrical driver is configured for being driven by electrical signals to drive the modulator to modulate the light generated by the light source into a corresponding 2-level data signalsuch that the respective 2-level data signals differs in power level.

Abstract: Disclosed are a method and system for determining and controlling power of an optical transmitter of an optical network unit (ONU) for a time and wavelength division multiplexing passive optical network (TWDM-PON). The system includes an RSSI collector configured to collect received signal strength indication (RSSI) information from upstream optical signals received from the ONUs connected to optical line terminal (OLT) ports, an ONU power level determiner configured to gather the pieces of RSSI information about the ONUs from the RSSI collector, and to determine power of optical transmitters of the ONUs based on the gathered information, and a power mode controller configured to receive power mode setting information of the optical transmitters of the ONUs from the ONU power level determiner, and to generate a physical layer operation and maintenance (PLOAM) message to control power modes of the ONUs based on the received power mode setting information.

Abstract: A system for powering a network element of a fiber optic wide area network is disclosed. When communication data is transferred between a central office (CO) and a subscriber terminal using a network element to convert optical to electrical (O-E) and electrical to optical (E-O) signals between a fiber from the central office and twisted wire pair, coaxial cable or Ethernet cable transmission lines from the subscriber terminal, techniques related to local powering of a network element or drop site by the subscriber terminal or subscriber premise remote powering device are provided. Certain advantages and/or benefits are achieved using the present invention, such as freedom from any requirement for additional meter installations or meter connection charges and does not require a separate power network.

Abstract: The present invention provides an optical communication method and an optical communication system in which eavesdropping is more difficult than in conventional techniques. An optical communication system in one embodiment of the present invention comprises: a photon pair generator which generates a correlated photon pair; a polarizer which is provided on an optical path of one photon of the correlated photon pair and direction of which is changeable based on information to be transmitted; a shutter which is provided between the photon pair generator and the polarizer on the optical path of the one photon of the correlated photon pair and which is capable of blocking the one photon of the correlated photon pair; and a photon detector which is provided on an optical path of another photon of the correlated photon pair.

Abstract: The disclosure includes a system and method for a first communication device to provide a millimeter wave communication service to a second communication device. The method may be performed by the first communication device. The method includes broadcasting a service discovery message describing the availability of the first communication device to provide the millimeter wave communication service. The method includes receiving a first handshake message that describes a request of the second communication device to receive the millimeter wave communication service from the first communication device and transmitting a second handshake message acknowledging receipt of the first handshake message. The method includes determining a future location of the second communication device at a future time.

Abstract: A body-coupled communication device (201) adapted to receive signals via a body transmission channel (160), the first device comprising couplers (102) arranged to receive a body-coupled signal, a synchronization-indicator (272) to storing a level of synchronization between the first device and a second device, and a band-pass filter (250) arranged to filter the received body-coupled signal depending on the synchronization level, the band-pass filter being arranged to allow passage of frequencies in a frequency-interval around a tunable filter frequency, wherein the frequency-interval is narrow if the synchronization-level is high and wherein the frequency-interval is broad if the synchronization-level is low.

Abstract: A communication device includes a ground unit, a dielectric plate, a communication circuit, a conductor, and a capacitance element. The ground unit has a reference potential applied to the ground unit. The dielectric plate is provided on the ground unit. The communication circuit is provided on the dielectric plate and performs a transmission and a reception of a signal. The conductor is connected to the communication circuit. An end of the capacitance element is connected to the conductor. An another end of the capacitance element is connected to the ground unit. A capacitance of the capacitance element is smaller than a capacitance formed between the conductor and the ground unit. The capacitance of the capacitance element is bigger than a capacitance formed between the conductor and the ground unit being caused by a human body touching or approximating to the conductor.

Abstract: The present invention is generally a movable barrier system that employs a movable barrier operator with a signal translation module, which enhances the quality of communications between wired components of a movable barrier system, including long distance wired communications between controllers and position sensors. In an exemplary embodiment, position sensors comprising encoders are coupled to translation module for reducing electromagnetic interference or noise from various components that may otherwise interfere with the communication; error detection and error correction means may be further implemented to facilitate diagnostic monitoring of the system from a monitoring device.

Abstract: Natural radio environments are emulated using field traces and a channel emulator to test radio devices. In one example, a test includes a field trace source to replay recorded field traces, a protocol tester to receive the replayed field traces to extract configuration parameters from the replayed field traces, to extract signals from the field traces, to send the signals to a device under test, and to receive signals from the device under test, and a channel emulator coupled to the field trace source, and between the protocol tester and the device under test, to receive the replayed field traces, to mix the replayed field traces with signals and to emulate the channel between the protocol tester and the device under test.

Abstract: Network analysis employs a band-limited multi-tone test signal having a tunable center frequency to test a device under test (DUT). A hybrid network analyzer includes a test signal source to provide the band-limited multi-tone test signal, and a local oscillator (LO) source to provide a tunable LO signal configured to track the tunable center frequency of the band-limited multi-tone test signal. The hybrid network analyzer further includes a receiver to convert into an intermediate frequency (IF) signal using the tunable LO signal one or both of the band-limited multi-tone test signal and a response signal from a device under test (DUT) produced in response to the band-limited multi-tone test signal. The test signal source is further configured to provide a tunable single-tone test signal and a broadband multi-tone test signal to test the DUT in various modes.