Frequency converter

Details Frequency converter Frequency converter

1977-12-14

1980-01-29

Safourek, Benedict V.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343181, H04B 150

Patent

active

041863445

ABSTRACT:
In a transmitter and receiver system, a frequency converter doubles as a transmitter local oscillator, a receiver local oscillator, and a transmitter frequency converter.
The present local oscillator is a semi-conductor oscillator such as a gunn diode or IMPAT diode, the DC power supply of which is converted to an intermediate frequency signal. The oscillator is stabilized by self injection locking by a cavity resonator connected to the output of the diode, thus the oscillating frequency is very stable. Some of the output power of the oscillator is separated for the receiving local oscillator through an isolator and an attenuator. The intermediate frequencies of a transmitter and receiver have a predetermined relationship.

REFERENCES:
patent: 3202917 (1965-08-01), Kawahashi et al.
patent: 3825830 (1974-07-01), O'Connor
patent: 3916412 (1975-10-01), Amoroso, Jr.

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