Automatic Electronic Filter System.
DEPARTMENT OF THE NAVY WASHINGTON D C
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The patent relates to a bandpass and rejection filter system to be used in a sonar receiver. It has the following characteristics 1 It has a filter system with a programmable center frequency and provisions to measure the error between the center frequency and the input frequency 2 it comprises a filter configuration that is adaptable to integrated circuit design 3 it is stable with temperature and aging, and 4 it has a capability for high Q responses.
- Electrical and Electronic Equipment
- Acoustic Detection and Detectors