Distributed and lumped-element realizations of wideband branch-line hybrids with arbitrary power division

Author

Lin, Tsu-Wei ; Chiou, Yi-Chyun ; Kuo, Jen-Tsai

Author_Institution

Dept. of Electr. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan

fYear

2009

fDate

7-10 Dec. 2009

Firstpage

2112

Lastpage

2115

Abstract

A two-section branch-line coupler with an arbitrary output power division is realized by lumped and distributed elements. Based on the transmission line theory, as well as the basic circuit theory, transcendental equations are derived and formulated to determine its circuit parameters. For circuit miniaturization, the transmission-line sections are replaced by either a lumped Â¿-network and realized with lumped capacitors. Several design curves are provided for ease of circuit implementation. Two circuits with output power division ratios |Â¿| = 3dB are fabricated and measured.

Keywords

capacitors; lumped parameter networks; transmission line theory; waveguide couplers; arbitrary output power division; circuit theory; distributed element; lumped capacitors; lumped element; lumped Â¿-network; transcendental equations; transmission line theory; two-section branch-line coupler; wideband branch-line coupler; Decision support systems; Virtual reality; Wideband; Arbitrary power division; branch-line coupler; lumped element; microstrip circuit; transmission-line theory;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/APMC.2009.5385260

Filename

5385260