Abstract: Devices and methods for layout-dependent voltage handling improvement in switch stacks. In some embodiments, a switching device can include a first terminal and a second terminal, a radio-frequency signal path implemented between the first terminal and the second terminal, and a plurality of switching elements connected in series to form a stack between the second terminal and ground. The stack can have an orientation relative to the radio-frequency signal path, and the switching elements can have a non-uniform distribution of a first parameter based in part on the orientation of the stack.

Abstract: A front end module for a wireless device. The front end module comprises an input port to receive a first radio frequency signal, a power amplifier, an antenna port, a first transmit/receive path, a second transmit/receive path, a switch, and a switching circuit. The power amplifier is coupled to the input port and configured to amplify the first radio frequency signal. The antenna port provides the amplified first radio frequency signal to an antenna. The first transmit/receive path includes a filter, and the switch includes a first contact coupled to the first transmit/receive path, a second contact coupled to the second transmit/receive path, and a third contact coupled to the antenna port. The switching circuit is configured to selectively couple the power amplifier to the antenna port via one of the first transmit/receive path and the second transmit/receive path.

Abstract: A RF module and an electronic device. The RF module includes a RF transceiver module; a first antenna configured to transmit a first transmission signal, and receive a first main reception signal and a second diversity reception signal; a first triplexer connected to the RF transceiver module and the first antenna, and being configured to isolate the first transmission signal, the first main reception signal, and the second diversity reception signal; a second antenna configured to transmit a second transmission signal, receive a second main reception signal and a first diversity reception signal, and a frequency band of the first transmission signal being different from that of the second transmission signal; and a second triplexer connected to the RF transceiver module and the second antenna, and being configured to isolate the second transmission signal, the second main reception signal, and the first diversity reception signal.

Abstract: One example of a device includes a Bluetooth transceiver, a Wireless Local Area Network (WLAN) transceiver, and a controller. The WLAN transceiver is proximate the Bluetooth transceiver. The controller is communicatively coupled to the Bluetooth transceiver and the WLAN transceiver. The controller is configured to adjust a cell size of the WLAN transceiver or the Bluetooth transceiver to reduce interference between WLAN transceiver traffic and Bluetooth transceiver traffic.

Abstract: A reconfigurable triplexer that can support more frequency bands than a traditional triplexer is disclosed. For example, the reconfigurable triplexer can handle frequencies of several hundred megahertz up to 10 gigahertz. Further, certain implementations of the reconfigurable multiplexer can reduce or eliminate frequency dead zones that exist with traditional multiplexers. The reconfigurable triplexer includes a multi-stage filter bank capable of supporting a number of frequency bands and a bypass circuit that enables the triplexer to support a variety of sets of frequencies. For instance, unlike traditional triplexers, the reconfigurable triplexer can support both frequency bands with relatively narrow spacing and frequency bands with relatively wide spacing. Further, the inclusion of the bypass circuit enables the reduction or elimination of dead zones between supported frequencies.

Abstract: An anti-interference microwave detection module processes frequency-selection for reducing the interferences from the electromagnetic radiation of the frequency bands different from the frequency band of the anti-interference microwave detection module in the environment to the echo signal of the anti-interference microwave detection module. A Doppler intermediate-frequency signal is trend processed to obtain a fluctuation signal. The characteristic parameter of the fluctuation of the fluctuation signal is corresponding to the characteristics of the movement of the object in the detection space, so that the anti-interference microwave detection module is able to completely reflect the characteristics of the movement of the object in the detection space and reduce the interferences of the electromagnetic radiation in the environment, including the interferences of the electromagnetic radiation of the same frequency band of the anti-interference microwave detection module, to the fluctuation signal.

Abstract: A switching circuit comprises a first series switch coupled to a first output port, the first series switch including a first field-effect transistor (FET), a second FET, a third FET, a fourth FET, a fifth FET, and a sixth FET, a second series switch coupled to a second output port, and coupling circuitry configured to couple a gate of the fifth FET and a gate of the sixth FET to a first node, a source of the fifth FET and a drain of the sixth FET to a second node, a source of the first FET and a drain of the second FET to a third node, a gate of the first FET and a drain of the fifth FET to a fourth node, a gate of the second FET and a source of the sixth FET to a fifth node, the fourth node and the fifth node to a first gate voltage, and the first node to a second gate voltage that is different than the first gate voltage.

Abstract: A switching circuit comprises a first filter, a second filter and a plurality of switches. The first filter is configured to filter a first frequency band, a second frequency band that is adjacent to the first frequency band and a gap band between the first frequency band and the second frequency band. The second filter is configured to filter the second frequency band. The plurality of switches is configured to route signals from an antenna through one of the first filter and second filter.

Abstract: A wide band matching network for power amplifier impedance matching, the wide band matching network comprising: a power amplifier transistor connected to an output network; the output network including: a series capacitor; an on-chip transformer connected to the capacitor in series, wherein the transformer and the capacitor act as a second order filter; and a port connected to the capacitor and a receiver switch.

Abstract: A hearing assistance device to provide sound to the ear of a user, the device comprising a housing, hearing assistance electronics enclosed in the housing, an acoustic transducer adapted to be worn in the ear, a cable assembly adapted to connect the acoustic transducer to the hearing assistance electronics, a wireless communications receiver connected to the hearing assistance electronics, and an antenna comprising one or more conductors forming at least a portion of the cable assembly.

Abstract: The present invention discloses a millimeter-wave isolation device, comprising a first isolated circuit and a second isolated circuit and further comprising a millimeter-wave transceiver. An output end of the first isolated circuit is connected to an input end of the millimeter-wave transceiver. An output end of the millimeter-wave transceiver is connected to an input end of the second isolated circuit. The first isolated circuit and the second isolated circuit are isolated by virtue of the millimeter-wave transceiver. By adopting a short distance transmission mode with millimeter-waves taken as carrier waves, a bandwidth can reach 200 kHz to 20 GHz, and a transmission speed can reach 100 kbps to 10 Gbps. The speed is high, whereby the millimeter-wave isolation device can be applicable to any scenario. A millimeter-wave carrier wave antenna is small, and through the antenna, either wireless transmission or signal isolation can be achieved.

Abstract: According to one embodiment, in an isolator, a first capacitive element is arranged on a first signal line. The first capacitive element has one end electrically connected to an input side circuit and having another end electrically connected to an output side circuit. A second capacitive element is arranged on a second signal line. The second capacitive element having one end electrically connected to the input side circuit and having another end electrically connected to the output side circuit. A first inductive element has one end electrically connected to a first node between the first capacitive element in the first signal line and the output side circuit. A second inductive element has one end electrically connected to a second node between the second capacitive element in the second signal line and the output side circuit.

Abstract: A radio frequency switch circuit includes a negative voltage generating circuit, a notch network, a logic control circuit, and a radio frequency switching circuit. The logic control circuit can be configured to, upon being driven by the negative voltage signal generated by the negative voltage generating circuit, control the operating modes of the radio frequency switching circuit; and the notch network is connected between the negative voltage generating circuit and the logic control circuit. As such, the influence of radio frequency signals generated by the radio frequency switching circuit can be filtered through the notch network, and the interference of radio frequency signals to the negative voltage generating circuit can be reduced, thereby improving the performance of the radio frequency switch circuit, for example in insertion loss, isolation and harmonic suppression.

Abstract: A high-frequency switch circuit includes a first switch configured to electrify or cut off connection between an antenna terminal and an input terminal, and a second switch configured to electrify or cut off connection between the antenna terminal and an output terminal. The first switch has a transmission line connecting the antenna terminal and the input terminal; a diode having an anode connected to a first node between the transmission line and the input terminal, and a cathode connected to a second node; and a capacitor connected to the second node and a first power supply voltage. A first control terminal is connected to the first node via a first resistor and a first inductor. The first switch further includes a charging/discharging circuit connected to a second power supply voltage and the first control terminal and charging and discharging the capacitor from the second node.

Abstract: In an embodiment, a circuit includes first, second, and third 90° hybrid couplers coupled between first and second antenna terminals, a pair of low-noise amplifiers (LNAs), and a pair of power amplifiers (PAs). The pair of LNAs is configured to receive first signals from the first and second antenna terminals and has an output configured to be coupled to a receive path. The second coupler is configured in power combiner mode for receiving the first signals. The pair of PAs is configured to transmit second signals via the first and second antenna terminals and has an input configured to be coupled to a transmit path. The third coupler is configured in power divider mode for transmitting the second signals.

Abstract: A Radio Frequency (RF) circuit including a receive path, a transmit path, a switching circuit, and an output configured to receive RF signals from an antenna in a receive mode of operation, and to provide RF signals to the antenna in a transmit mode of operation. The receive path is configured to be coupled between a low-noise amplifier and the output. The switching circuit is located in the receive path and is configured, in the receive mode, to selectively couple the low-noise amplifier to the output and to pass the received RF signals from the output to the low-noise amplifier. The transmit path is configured to be coupled between a power amplifier and the output, to provide, in the transmit mode, signals from the power amplifier to the output, bypassing the switching circuit, and to have, in receive mode of operation, an off-state impedance of at least 200+j*13 Ohm.

Abstract: A switch circuit includes first and second transistor stacks coupled in parallel between first and second ports. The first transistor stack includes a first plurality of transistors coupled in series between the first and second ports to provide a first variably-conductive path between the first and second ports. Each transistor of the first plurality of transistors has a gate terminal coupled to a first control terminal. The second transistor stack includes a second plurality of transistors coupled in series between the first and second ports to provide a second variably-conductive path between the first and second ports. Each transistor of the second plurality of transistors has a gate terminal coupled to a second control terminal. When implemented in a transceiver, first and second drivers are configured to simultaneously configure the first and second variably-conductive paths in a low-impedance state.

Abstract: A wireless communication device includes a first transceiver operable according to a first radio technology and a second transceiver operable according to a second radio technology and operable concurrently with the first transceiver. The wireless communication device further includes an antenna configured to transmit radio transmissions of the second transceiver, and a filter circuit coupling the second transceiver with the antenna. The filter circuit includes a first frequency path and a second frequency path in parallel. The first frequency path passes a first set of frequencies of the radio transmissions and the second frequency path passes a second set of frequencies of the radio transmissions. One of the first frequency path or the second frequency path is configured to filter the radio transmissions of the second transceiver to remove signals corresponding to the one or more operating frequencies of the first transceiver from the radio transmissions of the second transceiver.

Abstract: Systems and methods are disclosed for on-chip harmonic filtering for radio frequency (RF) communications. For disclosed embodiments, a filter circuit is coupled between a first internal node and a connection pad for an integrated circuit. The filter circuit includes a first inductance, a variable capacitance, and a second inductance. The capacitance amount for the variable capacitance is controlled to tune filtering for the filter circuit to a harmonic of a frequency for a transmit output signal. A power amplifier outputs the transmit output signal to the connection pad without passing through the filter circuit. The filter circuit filters the harmonic of the frequency for the transmit output signal, shunting harmonic current to ground. For one embodiment, the filtered harmonic is a third harmonic of the transmit frequency. For one embodiment, the transmit output signal has an output power greater than or equal to 15 dBm.

Abstract: An intelligent backhaul radio is disclosed, which can operate by zero division duplexing for use in PTP or PMP topologies, providing for significant spectrum usage benefits among other benefits. Specific system architectures and structures to enable active cancellation of multiple transmit signals at multiple receivers within a MIMO radio are disclosed. Further disclosed aspects include the adaptive optimization of cancellation parameters or coefficients.

Abstract: Circuits and devices related to switch controller. In some embodiments, a radio-frequency module can include a packaging substrate configured to receive a plurality of components, and a switching circuit implemented on the packaging substrate. The radio-frequency module can further include a control circuit configured to control operation of the switching circuit. The control circuit can include a regulator configured to generate a plurality of reference voltage levels for the operation of the switching circuit, or to be in a sleep mode, based on a control signal received through a common input node. The control circuit can further include a mode detector in communication with the regulator and configured to provide a first form of the control signal to the common input node to allow the plurality of reference levels to be generated by the regulator, or a second form of the control signal to the common input node to put the regulator in the sleep mode.

Abstract: A filter device includes: a common terminal; a first input/output terminal; a second input/output terminal; a first filter connected to a first path that connects the common terminal and the first input/output terminal, and having a passband that is a first band; a second filter connected to a second path that connects the common terminal and the second input/output terminal, and having a passband that is a second band having a frequency range that is different from and does not overlap a frequency range of the first band; a first switch element connected between a first node on the first path between the first filter and the first input/output terminal and a second node on the second path between the second filter and the second input/output terminal; and a second switch element on the second path, which is connected between the second node and the second input/output terminal.

Abstract: Embodiments presented herein relate to isolating a receiver circuit of an electronic device from a transmission signal and from a noise signal at a frequency range of a received signal. To do so, an isolation circuit is disposed between the receiver circuit and a transmission circuit. The isolation circuit may include multiple variable impedance devices and one or more antennas. The impedances of the variable impedance devices and the one or more antennas may be balanced such that the receiver circuit is effectively removed from the transceiver circuitry and isolated from the transmission signal. The impedance of the variable impedance devices and the one or more antennas may also be configured to isolate the receiver circuit from a noise signal generated at the transmission circuit having a frequency in the range of the receive signal.

Abstract: The apparatus includes a first transistor having a gate/base terminal to receive a first drive control signal used for controlling a driver stage of the transceiver and a drain/collector terminal coupled to a control terminal of a switch of the transceiver. The first transistor is switched on when the first drive control signal is at a first level that enables the driver stage to amplify a first RF signal. When the first transistor is switched on, the drain/collector terminal of the first transistor outputs to a control terminal of the switch a switch control signal at a second level that enables the switch to provide a portion of the RF signal reflected by the antenna to the load.

Abstract: A duplexer may be used to isolate a transmitter and a receiver that share a common antenna. By using impedance gradients to provide impedances that cause balance-unbalance transformers (balun) of the duplexer to cut-off access to the common antenna rather than duplicate the antenna impedance, the duplexer is balanced. Such cut-offs may have a lower insertion loss than a duplexer that merely duplicates the antenna impedance to separate the differential signals of the receiver and transmitter from the common mode signal.

Abstract: A radio frequency module includes: a switch circuit including a transmit terminal, a receive terminal, a selection terminal, and a common terminal, the switch circuit being capable of switching between (A) a connection between the transmit terminal and the common terminal, (B) connections between the transmit terminal and the common terminal and between the selection terminal and the common terminal, (C) connections between the receive terminal and the common terminal and between the selection terminal and the common terminal, and (D) a connection between the receive terminal and the common terminal; a transmit/receive filter connected to the common terminal and to be used for a time division duplex system, a pass band of the transmit/receive filter being a transmit/receive band of Communication Band A; and a DTC connected to the selection terminal, the DTC changing its capacitance value according to connection switching of the switch circuit.

Abstract: A BTE prosthetic device for use in a medical system or prosthesis comprises a connector configured to mechanically attach an auxiliary device of the system to the BTE prosthetic device. The connector is electrically connected to a transceiver of the BTE prosthetic device. The connector operates as an electromagnetic antenna for transmitting and/or receiving signals between the BTE prosthetic and other components of the medical system.

Abstract: An apparatus includes a transceiver circuit, a series capacitor, and a shunt switch. The transceiver circuit may comprise a transmit chain including an output matching network and a receive chain including an input matching network. An output of the output matching network may be connected directly to an input/output of the transceiver circuit. The series capacitor may be connected between an input of the input matching network and the output of the output matching network. The shunt switch may be connected between the input of the input matching network and a circuit ground potential of the transceiver circuit.

Abstract: A multi-input voltage converter includes an output circuit, a first conversion circuit, and a second conversion circuit. The first conversion circuit includes a first voltage receiving module, a first transformer, a first switch. The second conversion circuit includes a second voltage receiving module, a second switch. When the second voltage receiving module receives the second input voltage, the second switch is turned on to operate, and the output circuit outputs the output voltage.

Abstract: A Radio Frequency (RF) circuit including a receive path, a transmit path, a switching circuit, and an output configured to receive RF signals from an antenna in a receive mode of operation, and to provide RF signals to the antenna in a transmit mode of operation. The receive path is configured to be coupled between a low-noise amplifier and the output. The switching circuit is located in the receive path and is configured, in the receive mode, to selectively couple the low-noise amplifier to the output and to pass the received RF signals from the output to the low-noise amplifier. The transmit path is configured to be coupled between a power amplifier and the output, to provide, in the transmit mode, signals from the power amplifier to the output, bypassing the switching circuit, and to have, in receive mode of operation, an off-state impedance of at least 200+j*13 Ohm.

Abstract: A transceiver device comprising transceiver circuitry (5) coupled to one or more antenna ports (2; 2?) by a balun arrangement (Lb, Lu; Lu?). For each of the antenna ports (2; 2?) an antenna switch (Ta; Ta?) is present having an antenna enabling input (4; 4?) and being arranged to connect an unbalanced coil (Lu; Lu?) from the balun arrangement (Lb, Lu; Lu?) to the antenna port (2; 2?) and a ground port (3). Also an electro-static discharge (ESD) protection circuit is provided with an ESD switch (Te; Te?) arranged to connect the antenna port (2; 2?) to the antenna enabling input (4; 4?) of the antenna switch (Ta; Ta?). The ESD switch (Te; Te?) has an ESD switch control input (A) connected to an ESD trigger arrangement (Rtrigger).

Abstract: The present application provides a square wave generating method, applied in a square wave generating circuit, configured to generate a mimetic square wave signal, wherein the square wave generating circuit has a breakdown voltage. The square wave generating method comprises the square wave generating circuit generating the mimetic square wave signal as a first voltage during a first time interval; the square wave generating circuit generating the mimetic square wave signal as a second voltage during a second time interval; and the square wave generating circuit generating the mimetic square wave signal as a transient voltage during a transient interval between the first time interval and the second time interval, wherein the transient voltage is between the first voltage and the second voltage; wherein a first voltage difference between the first voltage and the second voltage is greater than the breakdown voltage.

Abstract: Examples provide a control circuit and a control apparatus, a radio frequency circuit and a radio frequency apparatus, a transceiver, a mobile terminal, methods and computer programs for determining calibration values for a radio frequency circuit. A control circuit (10) is configured to determine calibration values for a radio frequency circuit (100) with a transmit unit (102) coupled to an antenna (104) through an antenna tuner (106). The control circuit (10) is configured to determine the calibration values for the radio frequency circuit (100) based on at least two impedance measurements and based on at least two antenna tuner configurations.

Abstract: A radio-frequency switch includes a first series switch including a plurality of series field-effect transistors (FETs) connected in series between a first terminal and a second terminal, a first shunt switch including a plurality of shunt FETs connected in series between the first terminal and a first ground terminal, and a first shunt gate resistor circuit including a plurality of gate resistors respectively connected to gates of the plurality of shunt FETs of the first shunt switch. Respective resistance values of the plurality of gate resistors of the first shunt gate resistor circuit successively increase in a direction away from the first ground terminal toward the first terminal.

Abstract: A method includes providing a power supply package (PSP) that includes a power supply, an RFID tag, and a power switch, where a control terminal of the power switch is coupled to an output terminal of the RFID tag, and load path terminals of the power switch are coupled between an output terminal of the PSP and a first terminal of the power supply, where a control register of the RFID tag is pre-programmed with a first value such that the RFID tag is configured to generate a first control signal that turns off the power switch; receiving, by the RFID tag, a second value for the control register of the RFID tag; and writing, by the RFID tag, the second value to the control register of the RFID tag such that the RFID tag is configured to generate a second control signal that turns on the power switch.

Abstract: An apparatus comprises a first RF port, a second RF port, a first resonator circuit and at least one second resonator circuit. The first resonator circuit and the second resonator circuit may be connected between the first RF port and the second RF port. The first resonator circuit may comprise a first inductor, a first capacitor, and a first stacked switch device. The second resonator circuit may comprise a second inductor, a second capacitor, and a second stacked switch device. The first capacitor and the first stacked switch device may be coupled in series across the first inductor. The second capacitor, the second inductor, and the second stacked switch device may be connected in parallel.

Abstract: An integrated front-end module (FEM) includes at least one power amplifier (PA) coupled to an antenna without inclusion of a switching element in a transmit signal path in the FEM between an output of the PA and the antenna. The FEM further includes at least one low-noise amplifier (LNA) and a switching circuit coupled in a receive signal path of the FEM between the antenna and an input of the LNA. The switching circuit is configured in a first mode to disable the PA and to connect the input of the LNA to the antenna for receiving signals from the antenna. The switching circuit is configured in a second mode to disconnect the input of the LNA from the antenna and to enable the PA for transmitting signals to the antenna.

Abstract: A filter (10) includes a series arm circuit (11) and a parallel arm circuit (12). The parallel arm circuit (12) includes a parallel arm resonator (p1), a variable frequency circuit (12T), and a parallel arm resonator (p2) connected in parallel with a circuit in which the parallel arm resonator (p1) and the variable frequency circuit (12T) are connected in series. The variable frequency circuit (12T) includes a parallel arm resonator (p3) and a switch (SW) connected in parallel with the parallel arm resonator (p3), and is configured to change frequencies of a pass band and a frequency of an attenuation pole by switching between an on state and off state of the switch (SW). A resonant frequency and anti-resonant frequency of the parallel arm resonator (p1) are respectively different from a resonant frequency and anti-resonant frequency of the parallel arm resonator (p2).

Abstract: A transmit/receive switching circuit implementation reduces transmitting/receiving switching losses in a transceiver during different modes of operation. The implementation includes connecting a low noise amplifier and a power amplifier in accordance with a shunt configuration in the transceiver. The implementation also includes disabling the power amplifier to achieve a high impedance state by grounding an output stage bias and enabling the low noise amplifier and disabling one or more transistors connected to a path between the low noise amplifier and the power amplifier during a receive mode.

Abstract: The present invention relates to a microwave sensing device that uses antennas in the form of a 2×1 array with two radiators driven out of phase via a 180 degree power splitter for measuring a radio-frequency signal propagating through a mammalian specimen to obtain an integral estimate of bone density.

Abstract: Disclosed herein are switching or other active FET configurations that implement a main-auxiliary branch design. Such designs include a circuit assembly for performing a switching function that includes a branch including a main path in parallel with a first auxiliary path and the main path in series with a second auxiliary path. The circuit assembly also includes a first gate bias network connected to the main path. The circuit assembly also includes a second gate bias network connected to the first auxiliary path. The circuit assembly also includes a third gate bias network connected to the second auxiliary path, the second gate bias network and the third gate bias network configured to improve linearity of the switching function.

Abstract: The present application provides a square wave generating method, applied in a square wave generating circuit, configured to generate a mimetic square wave signal, wherein the square wave generating circuit has a breakdown voltage. The square wave generating method comprises the square wave generating circuit generating the mimetic square wave signal as a first voltage during a first time interval; the square wave generating circuit generating the mimetic square wave signal as a second voltage during a second time interval; and the square wave generating circuit generating the mimetic square wave signal as a transient voltage during a transient interval between the first time interval and the second time interval, wherein the transient voltage is between the first voltage and the second voltage; wherein a first voltage difference between the first voltage and the second voltage is greater than the breakdown voltage.

Abstract: Balun circuitry with a transceiver loop, a first antenna loop, and a second antenna loop is disclosed. The first antenna loop, the second antenna loop, and the transceiver loop are coaxially positioned such that the first antenna loop and the second antenna loop are coupled in opposite phase to the transceiver loop. In at least one exemplary embodiment, a semiconductor substrate has a layer that includes the first antenna loop, the second antenna loop, and the transceiver loop.

Abstract: A multiway switch, a radio frequency system, and a wireless communication device include four throw (T) ports and four pole (P) ports, and the four T ports include one first T port coupled with all of the four P ports. The multiway switch is configured to be coupled with a radio frequency circuit and an antenna system of an electronic device operable in a dual-frequency single-transmit mode, to enable a preset function of the electronic device, the antenna system includes four antennas corresponding to the four P ports, and the preset function is a function of transmitting a sounding reference signal (SRS) through the four antennas in turn.

Abstract: An apparatus includes a package and a chip. The package may comprise (i) a plurality of bonding pads, (ii) a plurality of combiner/splitter circuits, and (iii) a plurality of bumps. The bonding pads may be configured to electrically connect the package with a printed circuit board substrate. The combiner/splitter circuits generally connect each of the bonding pads to two respective bumps of the plurality of bumps. The chip is generally disposed in the package. The chip may comprise a plurality of contact pads and a plurality of transceiver channels. Each of the transceiver channels may comprise a radio-frequency input and a radio-frequency output. The radio-frequency input and the radio-frequency output of each transceiver channel are generally connected to respective contact pads of the chip. The respective contact pads of each transceiver channel are generally coupled to a respective bonding pad of the package via the two respective bumps.

Abstract: A transceiver device and associated antenna are disclosed. In one aspect, the transceiver device combines first and second transceiver modules with a transceiver capability including a substantially planar radiating element and including a central point. Each transceiver module is a transceiver module coupled with the transceiver capability so as to excite a pair of excitation points of the radiating element, the excitation points of one pair being arranged symmetrically relative to the central point of the radiating element. The first and second transceiver modules respectively excite a first pair of excitation points arranged in a first direction of the radiating element and a second pair of excitation points arranged in a second direction of the radiating element, the first and second directions being mutually orthogonal.

Abstract: An apparatus include a package, a chip and a plurality of bumps. The package may include (i) a plurality of bonding pads configured to exchange a plurality of radio-frequency signals with an antenna panel and (ii) a plurality of transmission lines configured to exchange the radio-frequency signals with the bonding pads. Two of the transmission lines may be connected to each of the bonding pads. The chip may be disposed in the package and may include (i) a plurality of transceiver channels configured to exchange the radio-frequency signals with the transmission lines and (ii) a plurality of switches configured to switch the radio-frequency signals to a signal ground. The bumps may be configured to exchange the radio-frequency signals between the transmission lines of the package and the transceiver channels of the chip. The transmission lines, the bumps and the switches may form a plurality of transmit/receive switches.

Abstract: A polar transmitter for an RFID reader and a system using the polar transmitter are disclosed. An RFID system according to at least some embodiments of the invention includes a polar transmitter employing a switch mode power amplifier. The system can also include a receiver to receive responses from RFID tags and a coupler connected to the polar transmitter, the receiver and one or more antennas. In at least some embodiments, the polar transmitter of the RFID system includes an envelope amplifier connected to the switch mode power amplifier to provide an envelope signal and a phase modulator connected to the switch mode power amplifier to phase modulate the switch mode power amplifier using a phase signal. In at least some embodiments, the polar transmitter of the RFID system transmits OPR-ASK signals to reduce AM modulation depth and provide a continuous phase signal for the phase modulator.

Abstract: A transceiver suitable for frequency division duplex (FDD) communication is disclosed. In one exemplary embodiment, a transmitter leakage reduction circuit for a transceiver is described. The transmitter leakage reduction circuit comprises an auxiliary power amplifier, first and second filters, and a signal transmission arrangement. The auxiliary power amplifier is configured to provide an auxiliary power amplifier output signal that represents an output signal of a power amplifier of the transmitter with a controllable phase shift or gain output. The first and second filters are configured to attenuate any signals in the receive frequency band of the respective power amplifier output signal and auxiliary power amplifier output signal. The signal transmission arrangement is configured to suppress a contribution of the power amplifier output signal from a signal received from an RF connecting point using the auxiliary power amplifier output signal to obtain a received signal that is input to the receiver.

Abstract: Embodiments of the invention include a tunable radio frequency (RF) communication module that includes a transmitting component having at least one tunable component and a receiving component having at least one tunable component. The tunable RF communication module includes at least one piezoelectric switching device coupled to at least one of the transmitting and receiving components. The at least one piezoelectric switching device is formed within an organic substrate having organic material and is designed to tune at least one tunable component of the tunable RF communication module.