DUAL CHANNEL CLOCK RECOVERY CIRCUIT
Assignee
Filed
Aug 16, 1982
Granted
Nov 6, 1990
Location
SALT LAKE CITY UT US
Abstract
Apparatus is provided for detecting the presence of a periodically keyed random modulated signal source. Received signals are stepped down to an intermediate frequency and then applied to pairs of narrow bandpass filters. The output from pairs of the narrow bandpass filters are applied to mixers to provide difference frequency signals occurring at the clock rate of the periodically keyed random modulated signal. The clock signal is processed through recovery circuits including a detector and a comparator A signal is generated at the output of the comparator when the clock signal is detected above the background noise and interference, thus, indicating the presence of a periodically keyed random modulated signal source.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
May 12, 1983
Rescinded
May 4, 1990
Duration
6 years, 11 months
Inventor
- 1SAMUEL C. KINGSTON
Record Details
- Patent number
- US 4969160
- Application
- 06408542
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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