The phase invariance condition for the ultra-wideband voltage controlled attenuator

Author

Stukach, O.V.

Author_Institution

Tomsk Polytech. Univ., Tomsk

fYear

2008

Firstpage

43

Lastpage

46

Abstract

A necessary condition for minimum of the phase shift vs. attenuation in a voltage controlled attenuator (VCA) is founded on the base of the linear system theory. The condition consists of equality of numerator and denominator polynomial degrees for the transfer function. Also the paper discloses details of the new VCA structure based on the cross-coupling circuits and discusses its performance. Its main difference from known consists in ultra wide band feature and large range of attenuation, where minimum of the phase shift is provided. As a result, the output parameters and adjusting parameters of diodes are founded.

Keywords

attenuators; phase shifters; transfer functions; ultra wideband technology; cross-coupling circuits; denominator polynomial degrees; linear system theory; numerator polynomial degrees; phase invariance condition; transfer function; ultra-wideband voltage controlled attenuator; Attenuation; Attenuators; Circuits; Control systems; Diodes; Linear systems; Polynomials; Transfer functions; Ultra wideband technology; Voltage control; Attenuator linear model; low phase shift; phase invariance; voltage controlled attenuator;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Control and Signal Processing, 2008. ISCCSP 2008. 3rd International Symposium on

Conference_Location

St Julians

Print_ISBN

978-1-4244-1687-5

Electronic_ISBN

978-1-4244-1688-2

Type

conf

DOI

10.1109/ISCCSP.2008.4537189

Filename

4537189