Title :
A logarithmic distributed amplifier
Author :
Nazoa-Ruiz, N. ; Aitchison, C.S.
Author_Institution :
ERA Technol. Ltd., Leatherhead, UK
Abstract :
A logarithmic amplifier which uses the distributed amplifier as the basic underlying element is described. The successive detection technique is used and leads to a logarithmic amplifier with a 65-dB dynamic range operating over the band 2 to 6 GHz, with a deviation from linearity in the middle of the band of +or-1.0 dB over the dynamic range. Over the specified band, a further deviation of +or-1.3 dB occurs. The effect of varying temperature from 0 degrees C to to 50 degrees C increases this figure to +or-1.7 dB. The rise and fall times (including the associative video amplifier) are 7 ns and 20 ns respectively.<>
Keywords :
microwave amplifiers; solid-state microwave circuits; video amplifiers; 2 to 6 GHz; 20 ns; 7 ns; SHF; fall times; logarithmic distributed amplifier; rise time; successive detection technique; video amplifier; Broadband amplifiers; Detectors; Distributed amplifiers; Dynamic range; Gain; Linearity; Pulse amplifiers; Schottky diodes; Temperature; Transfer functions;
Conference_Titel :
Microwave Symposium Digest, 1990., IEEE MTT-S International
Conference_Location :
Dallas, TX
DOI :
10.1109/MWSYM.1990.99688
