Title :
Balanced distributed-element phase shifter
Author :
Kim, Hongjoon ; Ho, Sung-Jin ; Yen, Chih-Chuan ; Sun, Kae-Oh ; van der Weide, D.W.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Wisconsin, Madison, WI, USA
fDate :
3/1/2005 12:00:00 AM
Abstract :
We present a balanced distributed-element phase shifter based on a nonlinear transmission line (NLTL) structure. Results show the second harmonic is more than 13dB lower at 0-V bias than a conventional single-ended NLTL phase shifter. We fabricated both balanced and conventional NLTL phase shifters with the same coplanar waveguide (CPW) design and diodes, and observed that phase shifting and insertion loss for both structures were quite similar, yet harmonic distortion was greatly improved in the balanced structure.
Keywords :
coplanar waveguides; harmonic distortion; phase shifters; transmission lines; varactors; balanced NLTL phase shifters; balanced distributed-element phase shifter; balanced structure; coplanar waveguide design; coplanar waveguide diodes; harmonic distortion; insertion loss; nonlinear transmission line; single-ended NLTL phase shifter; varactor; Capacitance; Coplanar transmission lines; Coplanar waveguides; Diodes; Harmonic distortion; Insertion loss; Phase shifters; Power harmonic filters; Transmission line theory; Voltage; Balanced structure; harmonics; nonlinear transmission line (NLTL); phase shifter; varactor;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2005.844200
