Dynamic range extension of a log amplifier with temperature and

Details Dynamic range extension of a log amplifier with temperature and Dynamic range extension of a log amplifier with temperature and

1995-10-06

1998-08-04

Vo, Nguyen

Telecommunications

Receiver or analog modulated signal frequency converter

Measuring or testing of receiver

4552264, H04B 1700

Patent

active

057909431

ABSTRACT:
A new addition to log amplifiers for received signal strength indication in cellular telephony and telecommunications applications extends the large signal end of the signal strength curve by adding rectifiers to the input of an intermediate frequency amplifier, without degrading the noise figure or impedance characteristics thereof. The new addition to log amplifier outputs a signal which is linearly related to an input signal to the log amplifier.

REFERENCES:
patent: 4742565 (1988-05-01), Iwahashi
patent: 4939788 (1990-07-01), Hasegawa
patent: 5296761 (1994-03-01), Fotowat-Ahmady et al.
patent: 5338985 (1994-08-01), Fotowat-Ahmady et al.

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