|Table of Contents|

Wideband Bandpass Circuit Based on the Shorted/OpenCoupled Line Resonators(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2021年02期
Page:
22-26
Research Field:
电子科学与技术
Publishing date:

Info

Title:
Wideband Bandpass Circuit Based on the Shorted/OpenCoupled Line Resonators
Author(s):
Chen Di
Nanjing Electronic Devices Institute,Nanjing 210016,China
Keywords:
shorted/open coupled line resonators; multi-mode resonator; bandpass filter circuit
PACS:
TN61
DOI:
10.3969/j.issn.1672-1292.2021.02.004
Abstract:
A wideband bandpass filter circuit is proposed in the paper by loading the shorted/open coupled line resonators. Five transmission poles and three transmission zeros are obtained by parallel loading the shorted and open coupled line resonators. To give a physical insight,the shorted and open coupled line resonators are analyzed with the even-/odd-mode theory. Finally,the designed bandpass circuit is fabricated and measured. The measured results show that a 3 dB frac-tional bandwidth of 73% is obtained and its operating frequency range is from 2.0 GHz to 4.2 GHz,which suggests a good agreement with the simulated one.

References:

[1] FENG W,CHE W. Novel ultra-wideband bandpass filter using shorted coupled lines and transversal transmission line[J]. IEEE Microwave and Wireless Components Letters,2010,20(10):548-550.
[2]WONG K W,CHIU L,XUE Q. Wideband parallel-strip bandpass filter using phase inverter[J]. IEEE Microwave and Wireless Components Letters,2008,18(8):503-505.
[3]WU Y,CUI L,ZHUANG Z,et al. A simple planar dual-band bandpass filter with multiple transmission poles and zeros[J]. IEEE Transactions on Circuits and Systems II:Express Briefs,2018,65(1):56-60.
[4]CHE W,XUE Q,GU L,et al. High-selectivity wideband balanced bandpass filters using symmetrical multi-mode resonators[J]. IET Microwave Antennas and Propagation,2013,7(12):1005-1015.
[5]WU X,WAN F,GE J. Stub-loaded theory and its application to balanced dual-band bandpass filter design[J]. IEEE Microwave and Wireless Components Letters,2016,26(4):231-233.
[6]DONG G,WANG W,WU Y,et al. Dual-band balanced bandpass filter using slotlines loaded patch resonators with independently controllable bandwidths[J]. IEEE Microwave and Wireless Components Letters,2020,30(7):653-656.
[7]俞浦宁,叶强. 一种低插损小型化LTCC带通滤波器[J]. 固体电子学研究与进展,2019,39(5):355-359.
[8]张皓. 双模基片集成波导腔体的研究及其在带通滤波器中的应用[J]. 固体电子学研究与进展,2020,40(3):191-194.
[9]SALEK M,SHANG X,LANCASTER M J. Compact S-band coaxial cavity resonator filter fabricated by 3-D printing[J]. IEEE Microwave and Wireless Components Letters,2019,29(6):382-384.
[10]MARTINEZ L,BELENGUER A E,BORIA V,et al. Compact folded bandpass filter in empty substrate integrated[J]. IEEE Microwave and Wireless Components Letters,2019,29(5):315-317.

Memo

Memo:
-
Last Update: 2021-06-30