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US 11,451,310 B1Granted
RF power detector
AssigneeQUALCOMM Incorporated
InventorPeter Shah
Life of this patent
Estimating the term…
Abstract
An RF power detector controls an amplitude of a replica input signal so that a power of the replica input signal substantially equals a power of an input signal to the RF power detector. A signal generator generates the replica input signal responsive to a digital control word. A feedback circuit adjusts the digital control word responsive to a comparison of output signals from an analog power sensor.
Claims30
A power detector, comprising:
- an analog power sensor;
- a comparator configured to compare a first power signal from the analog power sensor to a second power signal from the analog power sensor;
- a signal generator configured to generate a replica input signal having an amplitude responsive to a digital control word;
- and
- a feedback logic circuit configured to generate the digital control word responsive to an output signal from the comparator.
2 more elements
A method of power detection, comprising:
- passing a radio frequency input signal through an analog power sensor to produce a first power signal;
- generating a replica input signal responsive to a digital control word;
- passing the replica input signal through the analog power sensor to produce a second power signal;
- and
- adjusting the digital control word to measure a power of the radio frequency input signal.
2 more elements
A power detector, comprising:
- an analog power sensor;
- a switching network configured to pass an input signal during a first phase of a clock signal to the analog power sensor and to pass a replica input signal during a second phase of a clock signal to the analog power sensor;
- a signal generator configured to form the replica input signal responsive to a digital control word;
- and
- a feedback logic circuit configured to generate the digital control word.
2 more elements
A power detector, comprising:
- an analog power sensor;
- a signal generator configured to generate a replica input signal responsive to a digital control word;
- a switching network configured to pass an input signal to the analog power sensor during a first phase of operation and to pass the replica input signal to the analog power sensor during a second phase of operation, and
- an analog-to-digital converter configured to digitize a reference power signal from the analog power sensor during the second phase of operation and to digitize a first power signal from the analog power sensor during the first phase of operation.
1 more element
Dependencies are inferred from the claim text.