Title :
Lumped-element type D branch couplers
Author :
Sakagami, Iwata ; Tahara, Minoru ; Fuji, Masafumi
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Toyama, Toyama, Japan
Abstract :
A distributed-constant branch-line coupler called type D and its equivalent transformation to a lumped-element branch coupler are discussed. Design equations for five lumped-element type D branch couplers of arbitrary power division and impedance transformation are presented. Measurements using trial couplers consisting of four capacitors and two inductors showed good agreement with theoretical calculations except for a slight shift, approximately 10%, in frequency.
Keywords :
waveguide couplers; arbitrary power division; impedance transformation; lumped-element type D branch couplers; trial couplers; Capacitors; Circuits; Couplers; Equations; Frequency; Impedance; Inductors; Power system modeling; Power transmission lines; Transmission line theory; Branch coupler; chip capacitors; inductors; lumped-element; transmission line;
Conference_Titel :
Microwave Conference, 2009. APMC 2009. Asia Pacific
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-2801-4
Electronic_ISBN :
978-1-4244-2802-1
DOI :
10.1109/APMC.2009.5385352
