Optically injection-locked self-oscillating dual-gate MESFET mix

Details Optically injection-locked self-oscillating dual-gate MESFET mix Optically injection-locked self-oscillating dual-gate MESFET mix

1993-05-03

1995-09-12

Boudreau, Leo H.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359189, 359187, 331 42, 331172, H04B 1006

Patent

active

054502276

ABSTRACT:
A dual-gate self-oscillating mixer FET that is injection-locked from a remote LO frequency source. The dual-gate FET having a feedback circuit connected between the first gate port and the drain port that is tuned so that the FET can oscillate within a frequency range including a predetermined LO frequency. The FET having a remote synchronization circuit electrically connected to the FET first gate port to inject the predetermined LO frequency therein and lock the FET oscillation to that LO. Accordingly, the dual-gate FET mixes RF energy input to the second gate port with the locked LO injected in the first gate port and outputs the desired intermediate frequency through the drain port.

REFERENCES:
patent: 4541122 (1985-09-01), Kimura
patent: 4592095 (1986-05-01), Ohnishi et al.
patent: 4605909 (1986-08-01), Tsironis
patent: 4633188 (1986-12-01), Matsuta
patent: 4658440 (1987-04-01), Pavio et al.
patent: 4750217 (1988-06-01), Smith et al.
Birkeland et al, FET-Based Planar Circuits for Quasi-Optical Sources and nsceivers 1981 IEEE.
"12 Ghz Receiver with Self-Oscillating Dual-Gate Mesfet Mixer", by Tsironis, C., Electronics Letters, vol. 17, No. 17, Aug. 20, 1981.
"GaAs FET Applications for Injection-locked Oscillators and Self-Oscillating Mixers", by Jajima, Y., IEEE Transactions on Microwave Theory and Techniques, vol. 27, No. 7, pp. 629-632, Jul. 1979.

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