Stable broad-band microwave amplifier design

Author

Jung, Wen-Lin ; Wu, Jingshown

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

38

Issue

8

fYear

1990

Firstpage

1079

Lastpage

1085

Abstract

A modified real-frequency technique for designing a broadband microwave amplifier with guaranteed stability is presented. This method generates the two sets of resistive excursions necessary for synthesizing the source and load admittances of the amplifier concurrently, rather than sequentially, while both the stability and realizability requirements are satisfied simultaneously. Regardless of its constrained nature, the method has been formulated as an unconstrained optimization problem. An 8-12-GHz-band amplifier design example is presented to demonstrate its application. The transducer power gain obtained in the example by this method is 11.3+or-0.4 dB, which is 2.6-dB higher than that obtained by using the real-frequency technique.<>

Keywords

microwave amplifiers; stability; wideband amplifiers; 8 to 12 GHz; broad-band microwave amplifier; load admittances; real-frequency technique; realizability; source admittance; stability; transducer power gain; unconstrained optimization problem; Admittance; Constraint optimization; Frequency; Impedance matching; Microwave amplifiers; Microwave theory and techniques; Reflection; Resistors; Stability; Transducers;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.57333

Filename

57333