Duplexer application for a band-pass filter with open stub using parallel coupled-line

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....

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Bibliographic Details
Main Authors: Tae-Sung Jung, Ki-Cheol Yoon, Dong-Ki Lee, Hee Nam, Hyunwook Lee, Jae-Yeong Lee, Kyo-Soon Choi, Meng Lim, Jong-Chul Lee
Format: Conference Proceeding
Language:English
Subjects:
Band pass filters
Bandwidth
duplexer
Frequency measurement
harmonic suppression
Insertion loss
isolation
Microwave filters
open-stub
parallel coupled line
Resonator filters
Wireless communication
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Summary: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.
DOI:10.1109/IMWS2.2011.6027218