Oscillators – Plural oscillators – Parallel connected
Patent
1994-11-21
1996-01-23
Grimm, Siegfried H.
Oscillators
Plural oscillators
Parallel connected
331 60, 331107A, 331114, 332109, 34082569, 375238, 455129, H03B 536, H04L 2704
Patent
active
054867932
ABSTRACT:
A balanced oscillator and transmitter circuit is provided which includes a pair of balanced Colpitts-type oscillators for generating an enhanced power radiating output signal. The balanced oscillators share a series resonance input tank. Each oscillator has an amplification stage which preferably includes a Colpitts-type configured transistor. The transmitter circuit further includes first and second output tanks having first and second radiating elements which may include a pair of inductors. An oscillating current signal is generated by the oscillator and is commonly transmitted through the pair of radiating elements. Each radiating element transmits radiating output signals which are combined and summed in total to provide an efficient radiating output signal. Alternately, the first and second output tanks may include a center-tapped transformer coupled to a third radiating element.
REFERENCES:
patent: 5138284 (1992-08-01), Yabuki et al.
patent: 5367537 (1994-11-01), Anderson
patent: 5422605 (1995-06-01), Yang et al.
Branislav Petrovic, "A Balanced RF Oscillator", rfdesign Dec. 1989 pp. 35-38.
Robert Matthys, "A High Performance VHF Crystal Oscillator Circuit" rfdesign Mar. 1987 pp. 31-38.
Nick Demma, "Balanced Meissner Oscillator Circuits" RF design Dec. 1993 pp. 72-74.
Gary A. Breed, "A Basic Review of Feedback" RF design Apr. 1993 pp. 62-64.
Craig Taylor & David Kenny, "Basic Crystal Oscillator Design Considerations" RF design Oct. 1992 pp. 75-79.
Fred Brown, "Stable LC Oscillators" rfdesign Mar. 1987 pp. 54-61.
Harvey L. Morgan, "An Emitter Follower Oscillator" rfdesign Oct. 1988 pp. 61-62.
Grimm Siegfried H.
United Technologies Automatove, Inc.
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