Title :
Duplexer application for a band-pass filter with open stub using parallel coupled-line
Author :
Tae-Sung Jung ; Ki-Cheol Yoon ; Dong-Ki Lee ; Hee Nam ; Hyunwook Lee ; Jae-Yeong Lee ; Kyo-Soon Choi ; Meng Lim ; Jong-Chul Lee
Author_Institution :
Dept. of Wireless Commun. Eng., Kwangwoon Univ., Seoul, South Korea
Abstract :
In this paper, a duplexer using the open stub band-pass filter(BPF) with parallel coupled line is presented. The suggested duplexer is composed of distributed elements and planar substrate and it has characteristic of excellent isolation. The operating frequencies of the duplexer are respectively 5.8 GHz and 4.8 GHz at the RX and TX for C-band wireless communication systems. Also, the deviation frequency is 40 MHz and the bandwidth of filter is 10 %. The experimental results for insertion losses of filters are less than 2 dB at RX and TX, while the return losses are better than 15 dB.
Keywords :
band-pass filters; coupled transmission lines; microwave filters; BPF; C-band wireless communication systems; band-pass filter; duplexer application; frequency 4.8 GHz; frequency 40 MHz; frequency 5.8 GHz; open stub; parallel coupled-line; Band pass filters; Bandwidth; Frequency measurement; Insertion loss; Microwave filters; Resonator filters; Wireless communication; duplexer; harmonic suppression; isolation; open-stub; parallel coupled line;
Conference_Titel :
Intelligent Radio for Future Personal Terminals (IMWS-IRFPT), 2011 IEEE MTT-S International Microwave Workshop Series on
Conference_Location :
Daejeon
Print_ISBN :
978-1-4577-0961-6
Electronic_ISBN :
978-1-4577-0963-0
DOI :
10.1109/IMWS2.2011.6027218
