August 2007

Conference Paper

DEVELOPMENT AND TESTING OF HIGH POWER RF VECTOR MODULATORS*

By:
Kang, Yoon W; Wilson, Joshua L; Champion, Mark; Hardek, Thomas W; Kim, Sang-Ho ; Mccarthy, Michael P; Vassioutchenko, Alexandre V
Book Title:
PAC2007 Digest
Publication Date:
August 15, 2007
Conference Name:
PAC 2007
Conference Location:
Albuquerque, New Mexico, United States of America
Conference Sponsor:
IEEE, APS

Abstract

A fan-out RF power distribution system can allow many accelerating cavities to be powered by a single high-power klystron amplifier. High-power vector modulators can perform independent control of amplitudes and phases of RF voltages at the cavities without changing the klystron signal. A prototype highpower RF vector modulator employing a quadrature hybrid and two ferrite phase shifters in coaxial TEM transmission lines has been built and tested for 402.5 MHz. RF properties of the design and results of high power testing are presented.


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