Title :
A compact branch-line coupler using discontinuous microstrip lines
Author :
Sun, Kae-Oh ; Ho, Sung-Jin ; Yen, Chih-Chuan ; Van der Weide, Daniel
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Wisconsin, Madison, WI, USA
Abstract :
We introduce a branch-line coupler using discontinuous microstrip lines whose size is significantly reduced relative to the standard design. We manipulate the reactive characteristics of discontinuities in its microstrip lines to achieve a physical size reduction of almost 60% with comparable performance.
Keywords :
microstrip couplers; microstrip discontinuities; slow wave structures; branch-line coupler; discontinuous microstrip lines; hybrid coupler; microstrip discontinuity; physical size reduction; slow wave; Capacitance; Coupling circuits; Distributed parameter circuits; Equivalent circuits; Impedance; Inductance; MMICs; Microstrip; Microwave integrated circuits; Transmission line discontinuities; Hybrid coupler; microstrip discontinuity; slow wave;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2005.852789
