Superregenerative oscillator RF receiver with differential...

Details Superregenerative oscillator RF receiver with differential... Superregenerative oscillator RF receiver with differential...

2005-03-29

2005-03-29

Urban, Edward F. (Department: 2685)

Telecommunications

Receiver or analog modulated signal frequency converter

With particular receiver circuit

C455S334000, C455S337000, C455S343100, C455S338000

Reexamination Certificate

active

06873838

ABSTRACT:
A superregenerative oscillator RF receiver having a differential output that has the advantage of providing an improved operating range and increased receiver sensitivity without affecting receiver cost or current requirements. The present invention comprises a receiver that has a super-regenerative oscillator from which the demodulated output is taken in differential form. This is achieved by generating collector and emitter output signals, low pass filtering both signals, and then combining them in a difference amplifier. The resulting waveform contains approximately twice the signal content than would be yielded from a singled-ended circuit. The preferred embodiment of present invention can also achieve quench noise cancellation with proper layout and the use of a common mode low pass filter followed by a difference amplifier.

REFERENCES:
patent: 3746999 (1973-07-01), Freen
patent: 3805184 (1974-04-01), Visioli, Jr. et al.
patent: 3857110 (1974-12-01), Grebene
patent: 3869679 (1975-03-01), Grebene
patent: 4081766 (1978-03-01), Gay
patent: 4398283 (1983-08-01), Pottier
patent: 5136263 (1992-08-01), Lane
patent: 5479137 (1995-12-01), Harford
patent: 5565817 (1996-10-01), Lakshmikumar
patent: 5630216 (1997-05-01), McEwan
patent: 5635880 (1997-06-01), Brown
patent: 5714911 (1998-02-01), Gilbert
patent: 5789990 (1998-08-01), Ash et al.
patent: 5801593 (1998-09-01), Nguyen
patent: 5946609 (1999-08-01), Morey
patent: 6421535 (2002-07-01), Dickerson et al.
patent: 6703904 (2004-03-01), Aikawa et al.

Affiliated with

Also associated with

Rating

Superregenerative oscillator RF receiver with differential... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Superregenerative oscillator RF receiver with differential..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Superregenerative oscillator RF receiver with differential... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3399210