Compact Diplexer Using Slotline Stepped Impedance Resonator

Author

Haiwen Liu ; Wenyuan Xu ; Zhichong Zhang ; Xuehui Guan

Author_Institution

East China of Jiaotong Univ., Nanchang, China

Volume

23

Issue

2

fYear

2013

fDate

Feb. 2013

Firstpage

75

Lastpage

77

Abstract

In this letter, a compact diplexer is implemented by using slotline hairpin stepped impedance resonator (SIR) in ground plane. Two sets of slotline SIR with different dimensions are designed to resonate at different frequencies for the diplexer operation. Also, the SIR can provide a degree of freedom to improve the out-of-band rejection by properly tuning its geometrical parameter ratio. Besides, microstrip-slotline transition is used to split the signal to two channels without extra matching circuits and thereby economizes the circuit size. Finally, good agreement between measurement and simulation is achieved.

Keywords

resonators; slot lines; circuit size; compact diplexer; geometrical parameter ratio; microstrip-slotline transition; out-of-band rejection; slotline hairpin stepped SIR; slotline stepped impedance resonator; Admittance; Loss measurement; Microstrip; Passband; Resonant frequency; Slotline; Wireless communication; Diplexer; slotline; stepped impedance resonator (SIR); transition;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2013.2238912

Filename

6428649