A C-Ku Band 5-Bit MMIC Phase Shifter Using Optimized Reflective Series/Parallel LC Circuits

Kenichi MIYAGUCHI  Morishige HIEDA  Yukinobu TARUI  Mikio HATAMOTO  Koh KANAYA  Yoshitada IYAMA  Tadashi TAKAGI  Osami ISHIDA  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E86-C   No.12   pp.2429-2436
Publication Date: 2003/12/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Recent Trends on Microwave and Millimeter Wave Application Technology)
Category: Active(Phase Shifter)
Keyword: 
microwave,  phase shifter,  monolithic microwave integrated circuit (MMIC),  reflective circuit,  broad-band,  

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Summary: 
A C-Ku band 5-bit MMIC phase shifter using optimized reflective series/parallel LC circuits is presented. The proposed circuit has frequency independent characteristics in the case of 180 phase shift, ideally. Also, an ultra-broad-band circuit design theory for the 180 optimized reflective circuit has derived, which gives optimum characteristics compromising between loss and phase shift error. The fabricated 5-bit MMIC phase shifter with SPDT switch has successfully demonstrated a typical insertion loss of 9.4 dB 1.4 dB, and a maximum RMS phase shift error of 7 over the 6 to 18 GHz band. The measured results validate the proposed design theory of the phase shifter.