Phase Shifter for a 915 MHz Phased Array Hyperthermia System

Ronald D. Boesch, Richard L. Magin, Steven J. Franke

Research output: Contribution to journalArticlepeer-review


This paper describes a design for an analog phase shifter operating at 915 MHz and suitable for use in a phased array microwave hyperthermia system. Here, the major operating constraint was minimization of amplitude variation over a 180° phase shift, whereas previous phase shifters were designed to obtain a linear relationship between phase and control voltage. The result is a simple, inexpensive hybrid coupler phase shifter that operates over a narrow bandwidth and provides 180° of continuous phase shift with input powers up to 1 W.

Original languageEnglish (US)
Pages (from-to)904-907
Number of pages4
JournalIEEE Transactions on Biomedical Engineering
Issue number11
StatePublished - Nov 1987

ASJC Scopus subject areas

  • Biomedical Engineering


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