A size-reduced CPW balun using a "X"-crossing structure

Author

Lim, Jong-Sik ; Kim, Dong-Joo ; Jeong, Youg-Chae ; Ahn, Dal

Author_Institution

Div. of Inf. Technol. Eng., Soonchunhyang Univ., South Korea

Volume

1

fYear

2005

fDate

4-6 Oct. 2005

Abstract

A novel sized-reduced CPW balun is proposed. It has an 180° phase inverting structure, which is a "X"-crossing between signal line and ground planes of CPW transmission line. A 3λ/4 CPW transmission line can be reduced to λ/4 in physical length while the electrical length is preserved. One of previous Wilkinson baluns shown (Lim et al., 2004) has a long 3λ/4 transmission section to form the Wilkinson structure having out of phase performance between output ports. The large Wilkinson balun is quite reduced by adopting the CPW phase inverting structure. Measured results show that the size-reduced CPW Wilkinson balun has better performances than the original Wilkinson balun.

Keywords

baluns; coplanar transmission lines; coplanar waveguide components; CPW balun size reduction; CPW transmission line; Wilkinson baluns; X crossing structure; phase inverting structure; signal line; Circuit topology; Coplanar waveguides; Distributed parameter circuits; Frequency; Impedance matching; Information technology; Performance evaluation; Resistors; Size measurement; Transmission lines;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2005 European

Print_ISBN

2-9600551-2-8

Type

conf

DOI

10.1109/EUMC.2005.1608908

Filename

1608908