Oscillators – With device responsive to external physical condition – Temperature or light responsive
Patent
1995-04-07
1996-01-30
Grimm, Siegfried H.
Oscillators
With device responsive to external physical condition
Temperature or light responsive
331 69, 331 74, 331158, 331176, 331185, 455 73, H03B 532, H03L 104
Patent
active
054883334
ABSTRACT:
An oscillator is isolated from external mechanical and thermal effects by surrounding the oscillator on all sides with a thermally insulating medium such as an aerogel insulation structure that provides both thermal insulation and vibrational isolation. Power is supplied to the crystal oscillator without wires. Wires are eliminated by using modulated microwaves or millimeter waves to transmit power and signals into and out of the oscillators, such as with small, efficient transceivers utilizing microwave or millimeter-wave integrated circuits or use of solid-state light sources and photodetectors in combination with thermal insulation which is transparent to the wavelengths of the electromagnetic radiation.
REFERENCES:
patent: 4874252 (1989-10-01), Ziegler et al.
patent: 5339051 (1994-08-01), Koehler et al.
Symonds, D. A., et al "An Update on the TMXO", Forty-Fourth Annual Sympos on Frequency Control, 1990, IEEE pp. 615-621.
Brown, D., et al "Manufacturing Methods and Technology For Tactical Miniature Crystal Oscillator", 38th Annual Frequency Control Symposium, 1984, IEEE. pp. 380-386.
Anderson William H.
Grimm Siegfried H.
The United States of America as represented by the Secretary of
Zelenka Michael
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