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Low-noise one-port microwave transistor amplifier

✍ Scribed by A. P. Venguer; J. L. Medina; R. Chávez; A. Velázquez

Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
309 KB
Volume
33
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A new type of a microwave reflection amplifier with very low noise properties is presented. The proposed amplifier consists of a circulator and a one‐port circuit with the use of a transistor operating under negative resistance conditions. An expression for estimating the noise figure for this type of amplifier is proposed. Experimental results show that such a class of amplifiers that use only one transistor provides a higher transmission gain and a smaller noise figure than a conventional single‐stage amplifier, making it interesting to operate at millimeter‐wave frequencies. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 33: 100–104, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10236

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