Low Phase-Delay Reflection-type CRLH Band-Pass-Filter

Author

Nishino, Tamotsu ; Tsuru, Masaomi ; Miyazaki, Moriyasu

Author_Institution

Inf. Technol. R&D Center, Mitsubishi Electr. Co., Tokyo

fYear

2006

fDate

10-15 Sept. 2006

Firstpage

745

Lastpage

748

Abstract

In this paper, the authors propose the concept of the reflection-type composite right left handed (CRLH) filter to obtain low phase-delay in pass band. A lumped-element CRLH transmission line has stop bands and pass bands according to its lumped-element values. Therefore, it is a candidate of tunable filter configuration. But in pass band, transmission phase changes very rapidly when the number of unit CRLH cells increases. This is a fatal disadvantage for a communication device. On the other hand, reflection phase does not change so fast. The authors have realized this reflection property could be transferred to transmission property by combining with a hybrid circuit. Finally, the concept was verified by being implemented on a GaAs substrate. The result showed phase change was less than 90 degrees in 20% bandwidth

Keywords

III-V semiconductors; band-pass filters; gallium arsenide; microwave filters; GaAs; composite right left handed filters; microwave filters; phase delay; reflection phase; Band pass filters; Coupling circuits; Distributed parameter circuits; Frequency; Gallium arsenide; Microwave filters; Photonic band gap; Propagation losses; Reflection; Transmission lines; MMICs; Microwave filters;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2006. 36th European

Conference_Location

Manchester

Print_ISBN

2-9600551-6-0

Type

conf

DOI

10.1109/EUMC.2006.281009

Filename

4057925