Frequency converter
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United States of America Patent
Stats
-
Jan 29, 1980
Grant Date -
N/A
app pub date -
Dec 14, 1977
filing date -
Dec 27, 1976
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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