RF phase offset detection circuit
AssigneeQorvo US, Inc.
InventorChristian Rye Iversen
Life of this patent
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Abstract
An RF phase offset detection system, which includes a first RF phase detector and a second RF phase detector, and measures a first phase offset between a first RF signal and a second RF signal, is disclosed. Each of the first RF signal and the second RF signal has a common RF frequency. The first RF phase detector detects and filters the first RF signal and the second RF signal to provide a first detection signal. The second RF phase detector receives and phase-shifts the second RF signal to provide a phase-shifted RF signal. The second RF phase detector further detects and filters the first RF signal and the phase-shifted RF signal to provide a second detection signal, such that a combination of the first detection signal and the second detection signal is representative of the first phase offset.
Claims20
A radio frequency (RF) phase offset detection system configured to measure a first phase offset between a first RF signal and a second RF signal, and comprising:
- a first RF phase detector configured to detect and filter the first RF signal and the second RF signal to provide a first detection signal, wherein each of the first RF signal and the second RF signal has a common RF frequency;
- and
- a second RF phase detector configured to:
- receive and delay the second RF signal to provide a phase-shifted RF signal, wherein a second phase offset is between the second RF signal and the phase-shifted RF signal;
- and
- detect and filter the first RF signal and the phase-shifted RF signal to provide a second detection signal, wherein a combination of the first detection signal and the second detection signal is representative of the first phase offset.
Dependencies are inferred from the claim text.