Title :
Branch-line hybrids with - 15 dB coupling power
Author :
Ahn, Hee-Ran ; Kim, Jungjoon ; Kim, Bumman
Author_Institution :
POSTECH (Pohang Univ. of Sci. & Technol.), Pohang
Abstract :
In this paper, -15 dB branch-line hybrid was realized. In the case of-15 dB coupling power, the characteristic impedances of transmission lines were 49.20 Omega and 276.689 Omega and it was discussed to realize the high characteristic impedance of 276.689 Omega using coupled transmission lines. Using the method suggested, the problem how to realize the high characteristic impedance of 90deg transmission lines will be solved.
Keywords :
couplings; transmission lines; branch-line hybrids; coupled transmission lines; high characteristic impedance; power coupling; resistance 276.689 ohm; resistance 49.20 ohm; Admittance; Coupling circuits; Distributed parameter circuits; Equivalent circuits; Frequency; Impedance; Microwave technology; Millimeter wave technology; Power amplifiers; Power transmission lines;
Conference_Titel :
Microwave Conference, 2008. APMC 2008. Asia-Pacific
Conference_Location :
Macau
Print_ISBN :
978-1-4244-2641-6
Electronic_ISBN :
978-1-4244-2642-3
DOI :
10.1109/APMC.2008.4958201
