Skyworks Solutions, Inc.

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Setu Mohta

Yalin Jin

Kyu Hwan An

Embodiments of radio frequency (RF) systems include a transmit/receive switch integrated with one or more power amplifiers and/or other components. The power amplifiers can have transformer-based architectures, and a power amplifier and switch can be integrated onto a single complementary metal oxide semiconductor die.

Integrated CMOS transmit/receive switch in a radio frequency device

Embodiments of radio frequency (RF) systems include a plurality of power amplifiers having a primary winding and a secondary winding. Each of the power amplifiers may be configured to process signals of different frequency bands. The primary winding for one power amplifier can be detuned while another power amplifier is being used in a transmit mode. By detuning the power amplifier, power coupling from the transmitting power amplifier can be reduced or eliminated.

Active cross-band isolation for a transformer-based power amplifier

Embodiments of radio frequency (RF) systems include a transmit/receive switch integrated with one or more power amplifiers and/or other components. The power amplifiers can have transformer-based architectures. A compensation circuit can act to protect the receive path during an RF transmit mode.

Transmit-receive isolation in a transformer-based radio frequency power amplifier

Embodiments of radio frequency (RF) systems include a power amplifier having a primary winding and a secondary winding. The primary winding can be biased in different states in transmit and receive modes such that a difference between center frequencies of the primary winding and the secondary winding are significantly different in the different modes.

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Pasadena, CA, United States of America

Setu Mohta