US 2026/0205070 A1 · Polar Amplifier with Dynamic Duty Cycling

Abstract

An electronic device may include wireless circuitry with a polar power amplifier. Gate terminals of transistors in a PMOS portion of the amplifier may receive a first local oscillator (LO) signal. Gate terminals of transistors in an NMOS portion of the amplifier may receive a second LO signal. A tunable clock generator may generate the first and second LO signals based on a binary control signal received from a physical layer (PHY) controller. The PHY controller may supply the binary control signal to weighting/enable transistors in inverter banks of the tunable clock generator to dynamically adjust a duty cycle ratio between the first and second LO signals over time. The PHY controller may perform this adjustment based the characteristics of the radio-frequency signal in a manner that optimizes linearity and power consumption by the amplifier over time, even as the characteristics change.

Claims20

Dependent claims

Wireless circuitry comprising:

a tunable clock generator configured to generate a first local oscillator (LO) signal and a second LO signal, the tunable clock generator being configured to adjust a duty cycle ratio between the first and second LO signals over time;
and
an amplifier configured to output a radio-frequency signal, wherein the first and second LO signals convey a phase modulation for the radio-frequency signal and the amplifier includes
a first power supply input that receives a power supply voltage conveying an amplitude modulation for the radio-frequency signal,
a second power supply input that receives a reference voltage,
a p-type transistor coupled to the first power supply input and having a gate terminal configured to receive the first LO signal, and
an n-type transistor coupled to the second power supply input and having a gate terminal configured to receive the second LO signal.

4 more elements

A method of transmitting a radio-frequency signal comprising:

supplying a power supply voltage to a power supply input of an amplifier, wherein the power supply voltage carries an amplitude modulation of the radio-frequency signal;
supplying, using a local oscillator (LO) generator, a first LO signal to a p-channel metal-oxide-semiconductor (PMOS) portion of the amplifier and a second LO signal to an n-channel metal-oxide-semiconductor (NMOS) portion of the amplifier, wherein the first and second LO signals carry a phase modulation of the radio-frequency signal;
and
controlling, using one or more processors, the LO generator to adjust a duty cycle ratio between the first and second LO signals based on a characteristic of the radio-frequency signal.

1 more element

Dependencies are inferred from the claim text.

Polar Amplifier with Dynamic Duty Cycling

Life of this patent

Polar Amplifier with Dynamic Duty Cycling

Life of this patent

Abstract

Claims20