Frequency multiplier circuitry for radio beacons

Details Frequency multiplier circuitry for radio beacons Frequency multiplier circuitry for radio beacons

1995-02-03

1996-10-08

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Beacon or receiver

331 53, G01S 100

Patent

active

055636128

ABSTRACT:
A portable emergency position indicating radio beacon (EPIRB) that transmits two signals at different frequencies whereby one frequency is twice the frequency of the other and wherein the beacon incorporates a push-push frequency multiplier to multiply the generated signal and to cancel odd and higher order even harmonics in the multiplied signal so as to improve efficiency, decrease power dissipation, improve the circuit quality factor, and decrease wave distortion. The improved frequency doubling circuitry allows for an EPIRB of reduced housing volumetric size and reduced battery size without reducing signal output power.

REFERENCES:
patent: 4101894 (1978-07-01), Warner et al.
patent: 4673936 (1987-06-01), Kotoh
patent: 4754236 (1988-06-01), Mamodaly et al.
patent: 5138284 (1992-08-01), Yabuki et al.
patent: 5200713 (1993-04-01), Grace et al.

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