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High technology microwave transistors with the minimum L-C ladder matching circuits

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2 Author(s)
Bilgin, C. ; Yildiz Teknik Universitesi, Turkey ; Gunes, F.

High technology microwave transistors are recognised with their typical performance characteristics. Nowadays, microwave technology is capable of manufacturing transistors with very low noise profile. At the same time, the maximum gain profile, accompanied by very low-level noise for each operating frequency, can be at a high level and fairly flat. This flat gain characteristics can be employed in the design of low noise, high gain broadband microwave amplifiers. A typical high technology transistor, NE329S01, is chosen for a worked example. Using the performance data sheets, the maximum gain profile, GTmax, is obtained for the conditions of Freq=0.46 dB and the matched input port, Vi=1. This high level and flat gain characteristic is realized by using the L-C ladder configuration with the minimum number of elements in both the input and output matching circuits. Another typical design example is made for the characteristics Freq=0.46 dB, Vi=1, GT=10 dB within the range B=2-13 GHz, again via the minimum L-C ladder elements.

Published in:

Signal Processing and Communications Applications Conference, 2004. Proceedings of the IEEE 12th

Date of Conference:

28-30 April 2004