AUTOMATIC FREQUENCY CONTROL CIRCUITRY
Assignee
Filed
Jan 16, 1976
Granted
Mar 6, 1984
Location
Abstract
Automatic control circuitry for maintaining the frequency of a first local oscillator in a radar receiver at a predetermined offset frequency with respect to the frequency of either transmitted signals from a radar transmitter or echo signals from a target is disclosed. The disclosed circuitry operates as a discriminator when the frequency of the first local oscillator is different from the predetermined offset frequency and as a "phase lock" loop when the frequency of the first local oscillator is the same as the predetermined offset frequency.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Apr 30, 1982
Rescinded
May 27, 1983
Duration
1 year
Record Details
- Patent number
- US 4435847
- Application
- 05650521
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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