Frequency-tracking filter, as for use in FM-CW radar

Details Frequency-tracking filter, as for use in FM-CW radar Frequency-tracking filter, as for use in FM-CW radar

1980-07-07

1982-03-23

Tubbesing, T. H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

307520, 328167, 343 7PL, G01S 1332

Patent

active

043216021

ABSTRACT:
The performance of a frequency-tracking filter comprising a phase-locked loop synchronized by square-wave output signal from a limiter amplifier is improved during interruptions in that signal by interposing a level discriminator between the limiter amplifier and the phase comparator element of the phase-locked loop.

REFERENCES:
patent: 4072947 (1978-02-01), Johnson
W. Y. Elliott, Jr.; First Order Phase-Locked Loop Data Filter; IBM Technical Disclosure Bulletin, vol. 18, No. 10, Mar. 1976, pp. 3441-3442.

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