Differential narrowband peak detector

Details Differential narrowband peak detector Differential narrowband peak detector

2006-06-13

2006-06-13

Nguyen, Long (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S062000

Reexamination Certificate

active

07061278

ABSTRACT:
A single-ended peak detector is typically used to determine the peak of a differential RF signal. This single-ended peak detector cannot accurately measure the peak because of the common mode component of the RF signal. To solve this problem, a differential peak detector is provided that is capable of accurately sensing the peaks of the differential RF signal by rejecting its common mode component. In one embodiment, the components of this differential peak detector can be duplicated and placed in a mirror configuration, wherein the positive and negative components of the differential signal can be switched for one pair of input terminals. This mirrored differential peak detector can advantageously balance impedances on its inputs and reduce filtering requirements at the output node.

REFERENCES:
patent: 5804993 (1998-09-01), Suzuki
patent: 6836156 (2004-12-01), Chien
patent: 6977531 (2005-12-01), Chien

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