Skyworks Solutions, Inc.

Sige Semiconductor, Inc.

Lui Ray Lam

Mark M Doherty

William Gerard Vaillancourt

Andrew Raymond Chen

Chun-Wen Paul Huang

James Henry Ross

Bryan J Roll

Anthony Francis Quaglietta

Michael Joseph McPartlin

Thomas Li

Ghader Razmafrouz

Vinu Govind

Hanching Fuh

Zhiguo Lai

Jose Maria Elizalde Harrison

A switching circuit comprises a first transistor, a transformer including a first inductor and a second inductor that is co-centric with the first inductor, a first switch, a second switch, a second transistor, a first output, a second output, and coupling circuitry configured to couple the first inductor to the first transistor, a first end of the second inductor, the first switch, and the first output together at a first node, a second end of the second inductor, the second switch, and the second transistor together at a second node, and the second output to the second transistor.

Multi-mode power amplifier signal switching

Configuration devices in a module. In some embodiments a radio-frequency module includes a serial bus including a first serial data line and a second serial data line. The radio-frequency module also includes a control component coupled to the serial bus and the first switch, the control component configured to determine whether first data is detected on the first serial data line, determine whether second data is detected on the second serial data line, and decode a command based on the first data and second data when the first data is detected on the first serial data line and when the second data is detected on the second serial data line.

Systems and methods related to configuring devices in a module

Embodiments of the invention relate to a circuit assembly for biasing a PIN diode, wherein a DC biasing voltage is obtained by extracting power from a radio-frequency transmission path. The circuit assembly comprises a PIN diode, an input node configured to receive a radio-frequency input voltage, a rectifying circuit configured to receive the radio-frequency input voltage from the input node and generate a rectified voltage, and a smoothing circuit configured to receive the rectified voltage from the rectifying circuit and generate a DC voltage. The output of the smoothing circuit forms the input to the PIN diode to reverse-bias the diode. Related methods, radio-frequency switching circuits and radio-frequency modules are also provided.

Devices and methods related to diode switch control

Low noise charge pumps are disclosed. In certain embodiments, a charge pump includes a charge pump output terminal configured to provide a charge pump voltage, a switched capacitor, an inverter having an output electrically connected to a first end of the switched capacitor, a pair of charging switches connected between a second end of the switched capacitor and a reference voltage, and a pair of discharging switches connected between the second end of the switched capacitor and the charge pump output terminal. The pair of charging switches is closed during a charging operation and open during a discharging operation, while the pair of discharging switches closed during the discharging operation and open during the charging operation.

Low noise charge pumps

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.

Radio frequency switch biasing topologies

Apparatus and methods for power detection with enhanced dynamic range are provided. In certain embodiments, a front end system includes a power amplifier that amplifies a radio frequency (RF) input signal to generate an RF output signal, a directional coupler that generates a sensed RF signal based on sensing the RF output signal from the power amplifier, and a power detector that processes the sensed RF signal to generate a detection signal indicating an output power of the power amplifier. Additionally, the power detector includes two or more detection paths providing different amounts of gain to the sensed RF signal from the directional coupler.

Power detectors with enhanced dynamic range

Configuration devices in a module. In some embodiments, a radio frequency module includes a serial bus including a first serial data line and a second serial data line. The radio-frequency module also includes a first switch coupled to a first device and a third line. The radio-frequency module further includes a module coupled to the serial bus and the first switch, the module configured to determine whether first data is detected on a first serial data line, determine whether second data is detected on a second serial data line, adjust a configuration of the first switch when the first data is detected on the first serial data line and the second data is detected on the second serial data line.

Coupling and decoupling devices in a module

A diode voltage from a diode circuit can be combined with a proportional to absolute temperature (PTAT) voltage generated by a PTAT circuit to determine a temperature sensor voltage. This temperature sensor voltage may correspond to a temperature of a circuit or a localized temperature. By determining the temperature sensor voltage using a combination of a PTAT voltage and diode voltage, it is possible to remove or a PTAT circuit used to generate a bandgap voltage, which may shrink the temperature sensor and increase the accuracy of the temperature sensor circuit.

On-chip temperature sensor circuits

Low noise charge pumps are disclosed. In certain embodiments, a charge pump includes a charge pump output terminal that provides a charge pump voltage, a switched capacitor, and a plurality of switches that charge the switched capacitor during a charging operation of the charge pump and that connect the switched capacitor to the charge pump output terminal during a discharging operation of the charge pump. The switches operate with non-overlap between the charging operation and the discharging operation so that the charge pump operates with low noise.

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Lexington, MA, United States of America

Lui Ray Lam