RF magnitude sampler for holographic radar

Communications: directive radio wave systems and devices (e.g. – With particular circuit – Complex signal

Reexamination Certificate

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Details

C327S045000, C327S091000, C327S094000

Reexamination Certificate

active

07994968

ABSTRACT:
A gated peak detector produces phase-independent, magnitude-only samples of an RF signal. Gate duration can span as few as two RF cycles or thousands of RF cycles. Response is linearly proportional to RF amplitude while being independent of RF phase and frequency. A quadrature implementation is disclosed. The RF magnitude sampler can finely resolve interferometric patterns produced by narrowband holographic pulse radar.

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Seo et al, “A Low Power and High Gain Mixer for UWB Systems,” IEEE Microwave and Wireless Components Letters, vol. 18, No. 12, Dec. 2008.
U.S. Appl. No. 11/891,364, filed Aug. 11, 2007, McEwan.

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