Design of a compact narrow band-pass filter with λg/4 short stubs

Author

Yoon, Ki-Cheol ; Lee, Hyunwook ; Lee, Dong-Ki ; Lee, Jong-Chul

Author_Institution

Dept. of Wireless Commun. Eng., Kwangwoon Univ., Seoul, South Korea

fYear

2009

fDate

7-10 Dec. 2009

Firstpage

1454

Lastpage

1457

Abstract

In this paper, a narrow band pass Alter with reduced size using the λ_g/4 short stubs is presented. The filter size is reduced by realization of transmission line at the second harmonic while the power can be transferred to the output using the fundamental frequency band generated in the resonator and the transmission line in which the impedance mismatching technique is adopted. The experimental results show that the insertion loss is 2.0 dB and return loss is 11.1 dB, and the fractional bandwidth is 10% at the center frequency of 5.8 GHz. The Alter size is 19.7??8.6 mm².

Keywords

band-pass filters; impedance matching; network synthesis; resonators; transmission lines; λg/4 short stubs; compact narrow band-pass filter design; fractional bandwidth; frequency 5.8 GHz; fundamental frequency band; impedance mismatching technique; insertion loss; loss 11.1 dB; loss 2.0 dB; narrow band pass Alter; resonator; return loss; transmission line; harmonic; impedance mismatching; narrow; size-reduction; stub; transmission line;

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.2009.5384483

Filename

5384483