Compact bandpass filter with multiple harmonics suppression using folded parallel-coupled microstrip lines

Marimuthu, J., Bialkowski, K. S. and Abbosh, A. M. (2015). Compact bandpass filter with multiple harmonics suppression using folded parallel-coupled microstrip lines. In: 2015 Asia-Pacific Microwave Conference (APMC). Asia-Pacific Microwave Conference (APMC), Nanjing, China, (). 6-9 December 2015. doi:10.1109/APMC.2015.7413198


Author Marimuthu, J.
Bialkowski, K. S.
Abbosh, A. M.
Title of paper Compact bandpass filter with multiple harmonics suppression using folded parallel-coupled microstrip lines
Conference name Asia-Pacific Microwave Conference (APMC)
Conference location Nanjing, China
Conference dates 6-9 December 2015
Convener IEEE
Proceedings title 2015 Asia-Pacific Microwave Conference (APMC)
Journal name Asia-Pacific Microwave Conference Proceedings, APMC
Place of Publication Piscataway, NJ, United States
Publisher IEEE
Publication Year 2015
Sub-type Fully published paper
DOI 10.1109/APMC.2015.7413198
Open Access Status Not Open Access
ISBN 9781479987658
Volume 2
Total pages 3
Collection year 2016
Language eng
Abstract/Summary A compact bandpass filter with wide stopband and multiple transmission zero is presented. The device uses a low impedance feeding network, folded parallel coupled microstrip lines (FPCML) with stepped impedance and two capacitive coupled open stubs. The low impedance feeding network is utilized to enhance the coupling of the PCML structure and to achieve sharp lower and upper cut-off frequencies, while the folded open stub embedded with high/low impedance at end of PCML structure able to extend the upper stopband. Meanwhile, the two capacitive coupled open-ended stubs are able to produce multiple transmission zeros at the stopband to enhance the rejection response and achieve harmonic suppression. The proposed filter with a centre frequency of 2.45 GHz is designed and optimized using ADS Momentum. The filter shows excellent performance with 0.1 dB insertion loss and more than 15 dB attenuation in the wide stopband, with 20% fractional passband.
Keyword Bandpass filter
Coupled microstrip lines
Stepped impedance resonator
Q-Index Code EX
Q-Index Status Provisional Code
Institutional Status UQ

 
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Created: Wed, 04 May 2016, 15:56:52 EST by Anthony Yeates on behalf of Learning and Research Services (UQ Library)