Matched filter circuit

Details Matched filter circuit Matched filter circuit

1996-07-26

1999-02-16

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Unwanted signal suppression

327 94, 327344, 327361, 333172, 330109, 330306, H03K 500

Patent

active

058724664

ABSTRACT:
A matched filter with reduced electric power consumption is disclosed. The matched filter circuit power consumption is reduced by stopping the electric power supply to an unnecessary circuit since input signal is partially sampled just after an acquisition. Since the spreading code is 1 bit data string, the input signal sampled and held is branched out into the signal groups "1" and "-1" by a multiplexer. The signals in each groups are added in parallel by a capacitive coupling, and the electric power is supplied in the circuit intermittently.

REFERENCES:
patent: 4453132 (1984-06-01), Stamler
patent: 4507746 (1985-03-01), Fletcher, Jr.
patent: 5388063 (1995-02-01), Takatori
patent: 5396446 (1995-03-01), Shou
patent: 5408192 (1995-04-01), Bailey
patent: 5500810 (1996-03-01), Shou
patent: 5502664 (1996-03-01), Shou
patent: 5563812 (1996-10-01), Shou
Nauerz et al., "The Suitability of Modern CMOS Gate Array Circuits as Corelators and Matched Filters for Spread-Spectrum Signals", IEEE, vol. 2 of 3, pp. 473-478, 1987 no month.

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