H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 17/00 (2006.01) G01R 17/00 (2006.01) G01R 17/02 (2006.01) G01R 25/02 (2006.01) G01R 27/28 (2006.01) G01R 31/28 (2006.01)
Patent
CA 2172321
An RF device (12), such as an amplifier, is tested by applying a digitally-modulated RF stimulus signal, having a known magnilude and phase angle, to the device from a stimulus generator (13) to cause the device to generate a response signal. The response signal of the device is down-converted and digitized by a receiver (18), that includes a mixer (20) and local oscillator (21), prior to establishing the magnitude and phase angle of the respsonse signal. The magnitude and phase angle of the digitized, down-converted response signal are compared to the magnitude and phase angle, respectively, of the digitally-modulated stimulus signal to yield transfer functions indicative of the operation of the device.
Herring Chauncey
Heutmaker Michael S.
Wu Eleanor
At&t Ipm Corp.
Kirby Eades Gale Baker
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