Title :
Derivation of two- and three-branch lumped element codirectional couplers and their frequency characteristics
Author_Institution :
Dept. of Electr. & Electron. Eng., Toyama Univ., Japan
Abstract :
Four three-branch lumped element (LE) codirectional (COD) couplers corresponding to four fundamental two-branch LE COD couplers are derived using the equivalent transformation of transmission-line segments to LE π-type two-port circuits. The derivation method is very simple. Frequency characteristics are presented regarding the three-branch LE COD couplers.
Keywords :
directional couplers; equivalent circuits; lumped parameter networks; two-port networks; π-type two-port circuits; directional couplers; dual-branch lumped element couplers; equivalent lumped element; lumped element codirectional couplers; transmission-line segment equivalent circuit transformation; triple-branch lumped element couplers; Coplanar transmission lines; Coplanar waveguides; Directional couplers; Distributed parameter circuits; Fabrication; Microstrip; Printed circuits; Radio frequency; Transmission lines; VHF circuits;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465768
