Fast envelope detector with bias compensation

Details Fast envelope detector with bias compensation Fast envelope detector with bias compensation

1984-06-22

1986-08-26

Tarcza, Thomas H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

329179, H03D 106

Patent

active

046085670

ABSTRACT:
In combination with an envelope detector in a radar system, a bias compensation circuit consisting of a programmable read-only memory and a binary adder produce an unbiased envelope detection signal. The bias compensation circuit adds one to the output of the detector based upon whether the minimum of the I and Q (inphase and quadrature) signals is odd and the maximum even. It is capable of compensating for both normal envelope detection and the multiple divide-by-two case. As a result the dynamic range of the radar can be increased without the necessity for extensive additional hardware.

REFERENCES:
patent: 3599208 (1971-08-01), Nelson
patent: 3829671 (1974-08-01), Gathright et al.
patent: 3858036 (1974-12-01), Lunsford
patent: 3879664 (1975-04-01), Monsen
patent: 4093948 (1978-06-01), Long, III
patent: 4168500 (1979-09-01), Brassaw
patent: 4168501 (1979-09-01), Brassaw
patent: 4231005 (1980-10-01), Taylor, Jr.
patent: 4293856 (1981-10-01), Chressanthis et al.
patent: 4298942 (1981-11-01), Lee
Webster's New Ninth Collegiate Dictionary, p. 70; Merriam-Webster, 1983; Springfield, Mass.

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