Detector, RF circuit with detector, and mobile device with...

Details Detector, RF circuit with detector, and mobile device with... Detector, RF circuit with detector, and mobile device with...

2009-02-04

2011-11-01

Ismail, Shawki (Department: 2819)

Telecommunications

Receiver or analog modulated signal frequency converter

With particular receiver circuit

C455S041100, C455S041200

Reexamination Certificate

active

08050651

ABSTRACT:
The detector is reduced in DC power consumption when an input signal is at a low amplitude level. The detector includes first and second input terminals, first and second transistors, and a load element. The first and second input terminals are supplied with complementary input signals reverse to each other in phase. The first input terminal is connected to the first input electrode of the first transistor and the second input electrode of the second transistor. The second input terminal is connected to the second input electrode of the first transistor and the first input electrode of the second transistor. The load element is connected between output electrodes of the transistors and an operating voltage point. A detection voltage resulting from full-wave rectification arises from a circuit node. In the condition where a signal input to the input terminals is at a low amplitude level, the transistors are both in OFF state. Thus, DC power consumption is reduced.

REFERENCES:
patent: 4595972 (1986-06-01), Davis et al.
patent: 4977611 (1990-12-01), Maru
patent: 5479160 (1995-12-01), Koelle
patent: 5694420 (1997-12-01), Ohki et al.
patent: 5797090 (1998-08-01), Nakamura
patent: 6823191 (2004-11-01), Laroia et al.
patent: 7027796 (2006-04-01), Linsky et al.
patent: 2006-099810 (2006-04-01), None
Chaoming Zhang, “Built-In Test of RF Mixers Using RF Amplitude Detectors,” 2007 IEEE Proceedings of the 8thInternational Symposium on Quality Electronic Design, Mar. 26-28, 2007, pp. 404-409.

Affiliated with

Also associated with

Rating

Detector, RF circuit with detector, and mobile device with... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Detector, RF circuit with detector, and mobile device with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detector, RF circuit with detector, and mobile device with... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4292800