Exact analysis of maximum available gain and unilateral gain including phase angle of S21

Autor:	G.D. Vendelin, Chi-Chung Chien, Yu-Hsun Huang
Rok vydání:	2003
Předmět:	Physics Microwave amplifiers business.industry Circuit design Amplifier Phase angle Topology (electrical circuits) Condensed Matter Physics Optics Control theory Negative feedback amplifier Line (geometry) Electrical and Electronic Engineering business
Zdroj:	IEEE Microwave and Wireless Components Letters. 13:105-107
ISSN:	1558-1764 1531-1309
DOI:	10.1109/lmwc.2003.810118
Popis:	Exact formulae are presented for both maximum available gain (G/sub ma/) and unilateral gain (U), which include both the magnitude and phase angle of the S/sub 21/ parameter. The result for G/sub ma/ is not unique since there are many possible solutions to simultaneously match S/sub 11/ and S/sub 22/ when k>1. For the phase angle of U, the result tends to become 180/spl deg/ when using the topology of a variable coupler, a line stretcher, and a feedback amplifier. From the verifications, an amplifier using the unilateralizing technique will achieve 4-6 dB higher gain than that of the G/sub ma/ amplifier.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::988cc57f9b1d1194ab40b481be7a30f5 https://doi.org/10.1109/lmwc.2003.810118 Zobrazit plný text záznamu