Title :
A Broadband Directional Coupler using Nonuniform-Coupled Transmission Lines with Uniform-Coupled end Sections
Author :
Yukawa, Hidenori ; Oh-hashi, Hideyuki ; Miyazaki, Moriyasu
Author_Institution :
Antennas Department, Information Technology R & D Center, Mitsubishi Electric Corporation, 5-1-1 Ofuna, Kamakura, Kanagawa, 247-8501, Japan. Phone: +81-467-41-2532, Fax: +81-467-41-2519, E-mail: yukawa@ant.isl.melco.co.jp
Abstract :
A compact broadband directional coupler has been developed using novel nonuniform-coupled transmission lines with uniform end sections. By using these coupled lines, both the coupled line spacing and the coupled line length can be reduced. A 50% size reduction and a broadband performance are achieved in the fabricated coupler.
Keywords :
Broadband antennas; Coupling circuits; Directional couplers; Directive antennas; Distribution functions; Frequency response; Impedance; Integral equations; Reflection; Transmission lines;
Conference_Titel :
Microwave Conference, 1998. 28th European
Conference_Location :
Amsterdam, Netherlands
DOI :
10.1109/EUMA.1998.338237
