High-Power-Handling Transmission-Line Phase Shifter using a Back-to-Back Varactor Configuration

Conference: GeMiC 2014 - German Microwave Conference
03/10/2014 - 03/12/2014 at Aachen, Germany

Proceedings: ITG-Fb. 246: GeMiC 2014

Pages: 3Language: englishTyp: PDF

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Authors:
Wei, Muh-Dey; Negra, Renato (Chair of High Frequency Electronics, RWTH Aachen University, 52062 Aachen, Germany)

Abstract:
In this paper a transmission-line phase shifter (TLPS) using a back-to-back varactor configuration is proposed to handle high power. Two TLPSs using a typical and backto-back varactor configuration are investigated considering high input power. The back-to-back varactor configuration can enhance power handling capability and moreover, maintain the range of phase shift when the input power increases. A phase shifter cell using a CMOS technology is simulated. The TLPS cell can achieve a phase shift of 52deg and the maximum insertion loss of –2:2 dB. From 2:3 GHz to 2:5 GHz, the S11 is below –10 dB during different phase shifts.