US 8,913,973 B2 · Methods for determining optimum power supply voltages for radio-frequency power amplifier circuitry

Abstract

Electronic devices with wireless communications capabilities are provided. The electronic device may include storage and processing circuitry, power amplifier circuitry, power supply circuitry, etc. The storage and processing circuitry may direct the power amplifier circuitry to operate using a desired gain mode, in a particular radio channel, and at a given output power level. The power supply circuitry may bias the power amplifier circuitry with a power supply voltage. The performance of the power amplifier circuitry may be characterized by an adjacent channel leakage ratio (ACLR) margin. The power consumption of the power amplifier circuitry may be characterized by a current savings ratio. A cost function may be calculated by taking the product of the ACLR margin and current savings ratio. A minimum point for each cost function curve may be determined. It is desirable to bias the power amplifier circuitry with a supply voltage corresponding to the minimum point.

Claims23

Dependent claims

A method of testing a plurality of wireless electronic devices having storage and processing circuitry and power amplifier circuitry, comprising:

with the storage and processing circuitry of each wireless electronic device, configuring that wireless electronic device to operate under a given operating condition;
with test equipment, measuring a performance metric of the power amplifier circuitry for each wireless electronic device while that wireless electronic device is operating under the given operating condition;
with the test equipment, measuring a power savings metric of the power amplifier circuitry for each wireless electronic device while that wireless electronic device is operating under the given operating condition;
with the test equipment, computing a cost function value for each wireless electronic device by taking a product of the performance metric and the power savings metric for that wireless electronic device;
and
with the test equipment, obtaining an optimum operating setting for the power amplifier circuitry based on the measured performance metric and the measured power savings metric.

3 more elements

Dependencies are inferred from the claim text.

Methods for determining optimum power supply voltages for radio-frequency power amplifier circuitry

Life of this patent

Methods for determining optimum power supply voltages for radio-frequency power amplifier circuitry

Life of this patent

Abstract

Claims23