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Title: Micropower RF transponder with superregenerative receiver and RF receiver with sampling mixer

Abstract

A micropower RF transponder employs a novel adaptation of the superregenerative receiver wherein the quench oscillator is external to the regenerative transistor. The quench oscillator applies an exponentially decaying waveform rather than the usual sinewave to achieve high sensitivity at microampere current levels. Further improvements include circuit simplifications for antenna coupling, extraction of the detected signal, and a low-voltage bias configuration that allows operation with less than a 1-volt rail voltage. The inventive transponder is expected to operate as long as the battery shelf life. 13 figs.

Inventors:
Issue Date:
Research Org.:
University of California
OSTI Identifier:
504950
Patent Number(s):
5,630,216
Application Number:
PAN: 8-300,765
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 426000; PA: EDB-97:100228; SN: 97001815581
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 13 May 1997
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; RADIO EQUIPMENT; DESIGN; SERVICE LIFE; ELECTRIC POTENTIAL; OSCILLATORS; TRANSISTORS

Citation Formats

McEwan, T.E. Micropower RF transponder with superregenerative receiver and RF receiver with sampling mixer. United States: N. p., 1997. Web.
McEwan, T.E. Micropower RF transponder with superregenerative receiver and RF receiver with sampling mixer. United States.
McEwan, T.E. Tue . "Micropower RF transponder with superregenerative receiver and RF receiver with sampling mixer". United States.
@article{osti_504950,
title = {Micropower RF transponder with superregenerative receiver and RF receiver with sampling mixer},
author = {McEwan, T.E.},
abstractNote = {A micropower RF transponder employs a novel adaptation of the superregenerative receiver wherein the quench oscillator is external to the regenerative transistor. The quench oscillator applies an exponentially decaying waveform rather than the usual sinewave to achieve high sensitivity at microampere current levels. Further improvements include circuit simplifications for antenna coupling, extraction of the detected signal, and a low-voltage bias configuration that allows operation with less than a 1-volt rail voltage. The inventive transponder is expected to operate as long as the battery shelf life. 13 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {5}
}