Accession Number : AD0700034

Title :   LOGARITHMIC COMPRESSION AT RADIO FREQUENCIES OF VARIOUS SIGNAL WAVEFORMS.

Descriptive Note : Rept. for Jun 68-Feb 69,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Johnson,Walter A.

Report Date : 31 JUL 1969

Pagination or Media Count : 74

Abstract : Effects of logarithmic compression at radio frequencies on various waveforms are examined analytically. It is shown that solutions for even the most simple inputs can be very complicated. An equivalent block diagram for the radio-frequency logarithmic amplifier is derived that illustrates the features it has in common with bandpass limiters and video logarithmic amplifiers. A circuit design technique that can be used to design a logarithmic amplifier is discussed. Laboratory results are given for a 100-dB input dynamic range logarithmic amplifier at 100 MHz. (Author)

Descriptors :   (*RADIOFREQUENCY AMPLIFIERS, *LOGARITHMIC AMPLIFIERS), LIMITERS, AMPLITUDE MODULATION, FREQUENCY MODULATION

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE