NDLI: W-band low-loss bandpass filter using rectangular resonant cavities

Content Provider	IET Digital Library
Author	Liao, Xiaoyi Wan, Lei Yin, Yong Zhang, Yichi
Abstract	This study shows a high performance of W-band bandpass filter using a simple structure, which has advantages of low cost and simple process. This filter is composed of four rectangular resonant cavities, which are connected together by series. We designed and optimised the sizes of four cavities and the sizes of coupling holes by Ansoft's High Frequency Structure Simulator 13.0 (HFSS 13.0). The simulation result of the filter shows that it has the centre frequency at 92.62 GHz, 4.07% (3.86 GHz) bandwidth, a 0.4 dB insertion loss in the passband and a 1.51 rectangular coefficient. The measured response of the filter agrees with the simulation result, which has the centre frequency at 92.6 GHz, 4.53% (4.20 GHz) bandwidth, and an average insertion loss less than 0.5 dB in the passband. The rectangular coefficient of test result is 1.61. The simulation result also prove that it is easy to obtain a W-band bandpass filter which has a centre frequency range from 90 to 100 GHz with a bandwidth ranging from 3 to 9 GHz by slightly adjusting key sizes of the structure, such as chamfer radius and thickness of the iris.
Starting Page	1440
Ending Page	1444
Page Count	5
ISSN	17518725
Volume Number	8
e-ISSN	17518733
Issue Number	Issue 15, Dec (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-map/8/15
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-map.2014.0252
Journal	IET Microwaves, Antennas & Propagation
Publisher Date	2014-08-26
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Ansoft High Frequency Structure Simulator 13.0 Band-pass Filter Bandwidth 3 GHz to 9 GHz Frequency 90 GHz to 100 GHz Loss 0.4 DB Loss 1.51 DB Low-loss Bandpass Filter Millimetre Wave Filter Passive Filter Passive Network Rectangular Coefficient Rectangular Resonant Cavities Resonator Filter Waveguide And Microwave Transmission Line Component
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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