Expendable repeater employing harmonic mixing

Details Expendable repeater employing harmonic mixing Expendable repeater employing harmonic mixing

1976-06-08

1978-04-04

Murray, Richard

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

325 1, 343 68R, H04B 714

Patent

active

040830047

ABSTRACT:
An expendable signal repeater for transmitting a replica of received signals in which the received signals are converted to an intermediate frequency by mixing in a down-converter with an upper harmonic of a heterodyning signal provided by a local oscillator; the intermediate frequency signals are delayed; and the delayed, intermediate frequency signals are converted to the transmitted signal by mixing in an up-converter with the upper harmonic of the amplified, local oscillator heterodyning signal. A mechanism is provided for switching the local oscillator between the down-converter and the up-converter during the delay of the intermediate frequency signals to prevent feedback of the transmitted signal.

REFERENCES:
patent: 2228815 (1941-01-01), Deerhake
patent: 2369268 (1945-02-01), Trevor
patent: 2489273 (1949-11-01), Dodington
patent: 2561363 (1951-07-01), Haeff et al.
patent: 2671850 (1954-03-01), Marcou
patent: 2674692 (1954-04-01), Cutler
patent: 3113268 (1963-12-01), Horak
patent: 3127603 (1964-03-01), Kramer

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