Abstract: An electromagnetic coupler includes a dielectric layer with a first transmission line connecting an input port to an output port. A second transmission line on another surface of the dielectric layer forms a coupled port and an isolation port. The electromagnetic coupler provides a coupled signal at the coupled port, which is representative of an input signal at the input port. The amplitude of the coupled signal is related to the amplitude of the input signal by a coupling factor. A tuning element on the dielectric layer is configured to stabilize the coupling factor over a range of variations in thickness of the dielectric layer.

Abstract: An electromagnetic coupler includes a first transmission line connecting an input port to an output port. A second transmission line adjacent the first transmission line connects a coupled port and an isolation port. The electromagnetic coupler provides a coupled signal at the coupled port, which is representative of an input signal at the input port. The amplitude of the coupled signal is related to the amplitude of the input signal by a coupling factor. A tuning element is provided adjacent to the first or second transmission line and is coupled to an impedance. Varying impedance values cause an adjustment to the coupling factor and reactive impedance values provide frequency filtering effects.

Abstract: Aspects of this disclosure relate to a radio frequency coupler with a decoupled state. In an embodiment, an apparatus includes a radio frequency coupler and a switch network. The radio frequency coupler has at least a power input port, a power output port, a coupled port, and an isolated port. The switch network can electrically connect a termination impedance to the isolated port in the first state, and the switch network can decouple an RF signal traveling between the power input port and the power output port from the isolated port and the coupled port in a second state.

Abstract: An electromagnetic coupler assembly includes a handle wafer having an oxide layer disposed on a first surface thereof. A layer of active semiconductor is disposed on the oxide layer and includes a voltage terminal to receive a supply voltage. A layer of dielectric material is disposed on the layer of active semiconductor. A main transmission line is disposed on the layer of dielectric material. A coupled transmission line is disposed on the layer of active semiconductor and is one of inductively coupled to the main transmission line and capacitively coupled to the main transmission line. At least a portion of one of the main transmission line and the coupled transmission line is disposed directly above at least a portion of the layer of active semiconductor.

Abstract: An antenna switch module includes a radio-frequency input port, a radio-frequency output port, a radio-frequency core connected between the radio-frequency input port and the radio-frequency output port, the radio-frequency core being configured to operate in each of a plurality of operational states, the plurality of operational states including a first subset of operational states and a second subset of operational states, and a decoder configured to receive an input signal indicating a first operational state of the radio-frequency core, the first operational state being of the first subset of operational states, generate an output control signal corresponding to the first operational state, detect a transition of the radio-frequency core to a second operational state, determine that the second operational state is of the second subset of operational states, and insert an intermediate output signal corresponding to an intermediate operational state of the radio-frequency core in response to said determinat

Abstract: An attenuation circuit with a low insertion loss is provided. The attenuation circuit includes an input to receive an input signal, an output to provide an attenuated signal, an attenuator coupled between the input and the output, the attenuator being configured to attenuate the input signal, an isolation switch constructed to isolate the attenuator from the input or the output when in a bypass mode, and a bypass switch coupled in parallel with the attenuator to couple the input to the output when in the bypass mode.

Abstract: Integrated filter and electromagnetic coupler assemblies. In certain examples, an integrated filter and electromagnetic coupler assembly includes a filter having a capacitance and a series inductance, the series inductance being connected between an input port and an output port of the integrated filter and electromagnetic coupler assembly, and combination of the capacitance and the series inductance being selected to provide the filter with a passband and a stopband. The integrated filter and electromagnetic coupler assembly further includes a coupling element positioned physically proximate the series inductance and extending between a coupled port and an isolation port of the integrated filter and electromagnetic coupler assembly, the integrated filter and electromagnetic coupler assembly being configured to provide at the coupled port a coupled signal via inductive coupling between the series inductance and the coupling element responsive to receiving an input signal at the input port.

Abstract: A filtered electromagnetic coupler includes a main transmission line extending between an input port and an output port, and a coupled line section extending between a coupled port and an isolation port. The coupler is configured to couple signal power from the main transmission line to provide coupled signals at the coupled port, and a filter subsystem is connected to the coupled port to filter the coupled signals. The filter subsystem includes filters configured to pass or reject coupled signals by frequency, and the filter subsystem provides the filtered output signal to a measurement node.

Abstract: The exemplary embodiments include a radio frequency antenna switch configured to reject harmonic frequencies. In addition, the harmonic-rejected radio frequencies of the radio frequency antenna switch may be tuned by use of a capacitor array. The capacitor array may be configured with fuse elements or by control logic.

Abstract: Aspects of this disclosure relate to a radio frequency coupler and a switch between a port of the radio frequency coupler and an adjustable termination impedance circuit. In an embodiment, an apparatus includes a radio frequency (RF) coupler, a termination impedance circuit, and a switch circuit. The RF coupler can provide an indication of forward RF power at a coupled port in a forward power state and provide an indication of reverse RF power at an isolated port in a reverse power state. The termination impedance circuit can provide an adjustable termination impedance. The switch circuit can electrically connect the termination impedance circuit to the isolated port in the forward power state and electrically isolate the termination impedance circuit from the isolated port of the RF coupler in the reverse power state.

Abstract: A decoder for a radio-frequency module includes a control signal output, first control signal generator circuitry configured to receive an input signal indicating an operational state of a radio-frequency core communicatively coupled to the decoder, and generate an output control signal for controlling one or more radio-frequency devices of the radio-frequency core, second control signal generator circuitry configured to generate an intermediate output signal, and transition detection circuitry configured to receive a least a portion of the input signal and selectively provide the intermediate output signal on the control signal output when the input signal indicates a transition of the radio-frequency core for a first operational state of a first group of operational states to a second operational state of a second group of operational states.

Abstract: A radio-frequency module includes a switching device having first and second switch arms and a common pole node connected to both the first and second switch arms, a first shunt arm connected to the first switch arm, and a first transmission line disposed in the first switch arm between the common pole node and the first shunt arm, the first transmission line being configured to present a substantially open circuit looking into the first switch arm from the common pole node at a fundamental frequency of a signal transmitting on the second switch arm when the first switch arm is in an OFF-state and the first shunt arm is in an ON-state

Abstract: Disclosed are systems, circuits and methods related to low-loss bypass of a radio-frequency (RF) filter or diplexer. In some embodiments, a switching network circuitry can include a first switch that has an input pole configured to receive a radio-frequency (RF) signal, a pass-through throw configured to be connectable to the input pole to allow routing of the RF signal to an RF component, and at least one dedicated bypass throw configured to be connectable to the input pole and at least one bypass conduction path. The switching network circuitry can further include a second switch that has a pole and a throw, and is connectable between an output of the RF component and the bypass conduction path. Use of the dedicated bypass throw(s) in the first switch allows implementation of low-loss bypass of the filter or diplexer.

Abstract: Aspects of this disclosure relate to a radio frequency coupler and an adjustable termination impedance circuit. In an embodiment, an apparatus includes a radio frequency coupler and a termination impedance circuit configured to provide an adjustable termination impedance, in which the termination impedance circuit includes two switches and a passive impedance element in series between a reference potential and a selected port of the RF coupler, the selected port being one of an isolated port of the RF coupler or a coupled port of the RF coupler.

Abstract: Provided herein are apparatus and methods for reconfigurable directional couplers in an RF transceiver. Reconfigurable directional couplers can be reconfigured and designed to provide high directivity using configurable capacitors to effect a mutual coupling and using lumped components or delay lines to effect a phase shift. Depending on the embodiment, the reconfigurable directional coupler can include capacitors, inductors, and switching components. The coupler can be designed for multi-band operation with an adjustable coupling factor conducive to semiconductor process integration. The coupler can have variable phase shifters to achieve a desired level of directivity in the coupler.

Abstract: A decoder for a radio-frequency module includes a control signal output, first control signal generator circuitry configured to receive an input signal indicating an operational state of a radio-frequency core communicatively coupled to the decoder, and generate an output control signal for controlling one or more radio-frequency devices of the radio-frequency core, second control signal generator circuitry configured to generate an intermediate output signal, and transition detection circuitry configured to receive a least a portion of the input signal and selectively provide the intermediate output signal on the control signal output when the input signal indicates a transition of the radio-frequency core for a first operational state of a first group of operational states to a second operational state of a second group of operational states.

Abstract: Multi-output electromagnetic couplers configured to detect multiple frequencies simultaneously, and devices and systems including same. In one example a multi-output electromagnetic coupler includes a main coupler transmission line extending between and electrically connecting an input port and an output port, a first coupled line section configured to couple electromagnetic power in a first frequency band from the main coupler transmission line to provide a first coupled output signal at a first coupled port, and a second coupled line section configured to couple electromagnetic power in a second frequency band from the main coupler transmission line to provide a second coupled output signal at a second coupled port simultaneously with the first coupled output signal being provided at the first coupled port.

Abstract: Provided herein are apparatus and methods for reconfigurable directional couplers in an RF transceiver. Reconfigurable directional couplers can be reconfigured and designed to provide high directivity using configurable capacitors to effect a mutual coupling and using lumped components or delay lines to effect a phase shift. Depending on the embodiment, the reconfigurable directional coupler can include capacitors, inductors, and switching components. The coupler can be designed for multi-band operation with an adjustable coupling factor conducive to semiconductor process integration. The coupler can have configurable coupling capacitors and phase shifters.

Abstract: Radio-frequency (RF) modules are disclosed comprising an RF input port, an RF output port and an RF core configured operate in each of a plurality of operational states, the plurality of operational states including a first subset of operational states and a second subset of operational states. The RF module or device includes a decoder configured to receive an input signal indicating a first operational state of the RF core, the first operational state being of the first subset, generate an output control signal corresponding to the first operational state, detect a transition of the RF core to a second operational state, determine that the second operational state is of the second subset, and insert an intermediate output signal corresponding to an intermediate operational state of the RF core in response to said determination.

Abstract: Disclosed are systems, circuits and methods related to low-loss bypass of a radio-frequency (RF) filter or diplexer. In some embodiments, a switching network circuitry can include a first switch that has an input pole configured to receive a radio-frequency (RF) signal, a pass-through throw configured to be connectable to the input pole to allow routing of the RF signal to an RF component, and at least one dedicated bypass throw configured to be connectable to the input pole and at least one bypass conduction path. The switching network circuitry can further include a second switch that has a pole and a throw, and is connectable between an output of the RF component and the bypass conduction path. Use of the dedicated bypass throw(s) in the first switch allows implementation of low-loss bypass of the filter or diplexer.