Logarithmic level detector and a radio receiver

Details Logarithmic level detector and a radio receiver Logarithmic level detector and a radio receiver

1996-12-09

1998-11-17

Vo, Nguyen

Telecommunications

Receiver or analog modulated signal frequency converter

Measuring or testing of receiver

4552261, 327351, 327352, H04B 1700

Patent

active

058390600

ABSTRACT:
A logarithmic level detector that provides a very accurate level detector output signal that is greatly insensitive to temperature and process spread. The logarithmic level detector includes a weighted summed reference circuit which is subtracted from a level output signal of the cascade of limiting amplifiers so as to form a relative level detector output signal, and further compensation circuitry at input and output side, and an overall gain stabilizing circuit.

REFERENCES:
patent: 3916316 (1975-10-01), Hearn et al.
patent: 3936759 (1976-02-01), Macheel
patent: 4619002 (1986-10-01), Thro
patent: 5149104 (1992-09-01), Edelstein
patent: 5182476 (1993-01-01), Hanna et al.
patent: 5338985 (1994-08-01), Fotowat-Ahmady et al.
patent: 5652800 (1997-07-01), Roberts

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