Abstract: A device may include an input port configured to receive the RF signal, the input port being positioned on a first side of the RF switching circuit; a control port configured to receive a control signal indicating a trace through which the RF signal is routed, the control port being positioned on a second side of the RF switching circuit opposite to the first side. The device may further include a plurality of switching pins configured to be coupled to a plurality of traces, a first half of the plurality of switching pins being positioned on one adjacent side of the RF input, and a second half of the plurality of switching pins being positioned on the other adjacent side of the RF input. The device may also include a controller configured to route the RF signal according to the control signal by reference to a truth table.

Abstract: In some embodiments, a method for multiplexing signals can include providing multiple subcarriers, selecting a group of one or more subcarriers among the multiple subcarriers, and adjusting each subcarrier of the selected group. The method can further include performing a multiplexing operation with the multiple subcarriers to obtain an output signal, with the output signal having an adjusted property resulting from the adjusting of the one or more subcarriers of the selected group. In some embodiments, the multiple subcarriers can include one or more groups of data subcarriers and one or more groups of guard band subcarriers.

Abstract: An antenna architecture can include a common node and a plurality of signal paths each having first and second ends, with the first end coupled to the common node, such that a common signal provided at the common node splits into respective signals in the signal paths. The antenna architecture can further include a phase shifter block implemented along each of at least some of the signal paths, with the phase shifter block including a phase shifting line to provide a phase shift for the signal passing through the respective signal path, such that the signals emerging from the signal paths are provided with incremental phase shifts. The antenna architecture can further include an antenna unit coupled to the second end of each signal path, such that the signals provided to the antenna units result in a transmitted signal being directed at a tilt angle with respect to the antenna units.

Abstract: A front end module includes an antenna port, two or more bandpass filters forming a signal path with the antenna port, each of the bandpass filters having a different passband, one or more amplifiers, the one or more amplifiers being disposed between the two or more bandpass filters and the antenna port in the signal path, and one or more switches configured to connect one of the two or more bandpass filters to the one or more amplifiers. A corresponding wireless device and wireless access point are also provided.

Abstract: According to the present disclosure there is provided a front end module comprising a bandpass filter, an antenna port for connection to an antenna and forming a signal path with the bandpass filter, and one or more amplifiers. The one or more amplifiers are disposed between the bandpass filter and the antenna port in the signal path. A corresponding wireless device and wireless access point are also provided.

Abstract: Honeycomb cavity waveguides are disclosed. In certain embodiments, a mobile device includes an antenna and a front-end system. The front-end system includes a radio frequency circuit that outputs a radio frequency signal, and a plurality of honeycomb cavity waveguides arranged in an array. The plurality of honeycomb cavity waveguides includes a first honeycomb cavity waveguide that guides the radio frequency signal to the antenna.

Abstract: Crossbar switches for coarse phase shifting are disclosed. In certain embodiments, a mobile device includes an antenna array including a plurality of antennas. The mobile device further includes a front end system coupled to the antenna array and including a plurality of signal conditioning circuits each including a phase shifter. The plurality of signal conditioning circuits each provide phase shifting to a respective one of a plurality of radio frequency signals based on a fine control signal. The front end system further includes a crossbar switch coupled to the plurality of signal conditioning circuits and configured to provide phase shifting to the plurality of radio frequency signals based on a coarse control signal.

Abstract: A power amplifier module including an input configured to receive an input radio frequency signal, the input radio-frequency signal including a series of data symbols, an output configured to provide an output radio-frequency signal, a power amplifier having a signal input to receive the input radio-frequency signal and a power supply input to receive a supply voltage, the power amplifier configured to amplify the input radio-frequency signal to provide the output radio-frequency signal, and a controller to receive an indication of a peak output power level of an upcoming data symbol in the series of data symbols, to adjust at least the supply voltage provided to the power amplifier based on the peak output power level of the upcoming data symbol, and to configure the power amplifier module to maintain a substantially constant gain over the series of data symbols.

Abstract: A method of forming a flip-chip integrated circuit die that includes a front side including active circuitry formed therein and a plurality of bond pads in electrical communication with the active circuitry, at least two through-wafer vias in electrical communication with the active circuitry and extending at least partially though the die and having portions at a rear side of the die, and a bond wire external to the die and electrically coupling the portions of the at least two through-wafer vias to one another at the rear side of the die.

Abstract: Radio frequency systems and methods adjust power amplifier operation based on power amplifier operating mode or power level to achieve a tradeoff between improved linearity at lower power levels and improved out of band noise performance and coexistence at higher power levels.

Abstract: Reconfigurable patch antenna systems are provided herein. In certain embodiments, a mobile device includes a patch antenna configured to handle a radio frequency signal at a signal feed. The patch antenna includes a plurality of antenna segments. The front-end system further includes a plurality of switches each configured to control connection of a respective one of the first plurality of antenna segments to the first signal feed, and a control circuit configured to control the plurality of switches to provide a frequency adjustment to the patch antenna.

Abstract: Apparatus and methods for diplexing by antenna structure are provided. In certain embodiments, a mobile device includes a front end system and an antenna structure. The front end system includes a first signal conditioning circuit configured to condition a first radio frequency signal of a first frequency, and a second signal conditioning circuit configured to condition a second radio frequency signal of a second frequency that is lower than the first frequency. The antenna structure is configured to diplex the first radio frequency signal and the second radio frequency signal, and includes a first antenna configured to handle the first radio frequency signal and a second antenna electromagnetically coupled to the first antenna and configured to handle the second radio frequency signal.

Abstract: Apparatus and methods for wirelessly communicating using antennas are disclosed. In certain embodiments, an antenna system includes a first radio frequency signal conditioning circuit configured to condition a first radio frequency signal of a first frequency, a plurality of second radio frequency signal conditioning circuits configured to condition a plurality of second radio frequency signals of a second frequency that is greater than the first frequency, a plurality of switches operable in a first mode and a second mode, and an antenna array of including a plurality of antenna elements interconnect by the plurality of switches. The antenna array is operable to handle the first radio frequency signal in the first mode, and to handle the plurality of second radio frequency signals in the second mode.

Abstract: Aspects of the disclosure include a multi-band radio system comprising a first wireless-communication channel having a first antenna to transmit and receive first wireless signals, and a second wireless communication channel having a second antenna to transmit and receive second wireless signals, a power amplifier to amplify the second wireless signals, and a matching network to control a phase angle of the second wireless signals between the second antenna and the power amplifier.

Abstract: A power amplifier module that includes a power amplifier having a plurality of amplifier gain stages, a memory device including a plurality of memory locations, and a controller to receive a control signal having at least one of a first state and a second state. The plurality of memory locations includes at least one first memory location to store a first set of configuration parameters for operation in a first mode, and at least one second memory location to store a second set of configuration parameters for operation in a second mode. The controller configures the power amplifier module in the first mode based on the first set of configuration parameters responsive to receiving the control signal having the first state and configures the power amplifier module in the second mode based on the second set of configuration parameters responsive to receiving the control signal having the second state.

Abstract: A method of forming a flip-chip integrated circuit die that includes a front side including active circuitry formed therein and a plurality of bond pads in electrical communication with the active circuitry, at least two through-wafer vias in electrical communication with the active circuitry and extending at least partially though the die and having portions at a rear side of the die, and a bond wire external to the die and electrically coupling the portions of the at least two through-wafer vias to one another at the rear side of the die.

Abstract: A flip-chip integrated circuit die includes a front side including active circuitry formed therein and a plurality of bond pads in electrical communication with the active circuitry, at least two through-wafer vias extending at least partially though the die and having portions at a rear side of the die, and a bond wire external to the die and electrically coupling the portions of the at least two through-wafer vias at the rear side of the die.

Abstract: A temperature compensation circuit comprises a temperature coefficient circuit that generates a temperature coefficient that is temperature dependent and a compensation circuit that generates a compensation signal based on an indication of temperature of an amplifier and the temperature coefficient, and based on the compensation signal, a gain of the amplifier is adjusted to improve amplifier linearity during data bursts.

Abstract: A power amplifier module including an input configured to receive an input radio frequency signal, the input radio-frequency signal including a series of data symbols, an output configured to provide an output radio-frequency signal, a power amplifier having a signal input to receive the input radio-frequency signal and a power supply input to receive a supply voltage, the power amplifier configured to amplify the input radio-frequency signal to provide the output radio-frequency signal, and a controller to receive an indication of a peak output power level of an upcoming data symbol in the series of data symbols, to adjust at least the supply voltage provided to the power amplifier based on the peak output power level of the upcoming data symbol, and to configure the power amplifier module to maintain a substantially constant gain over the series of data symbols.

Abstract: A power amplifier module that includes a power amplifier having a plurality of amplifier gain stages, a memory device including a plurality of memory locations, and a controller to receive a control signal having at least one of a first state and a second state. The plurality of memory locations includes at least one first memory location to store a first set of configuration parameters for operation in a first mode, and at least one second memory location to store a second set of configuration parameters for operation in a second mode. The controller configures the power amplifier module in the first mode based on the first set of configuration parameters responsive to receiving the control signal having the first state and configures the power amplifier module in the second mode based on the second set of configuration parameters responsive to receiving the control signal having the second state.