{"title":"Design and Analysis of High Selectivity THz Filters for Astronomical Observation System Including Power Handling Analysis","authors":"A. Fahad, C. Ruan, T. Haq, Shahidullah Khan","doi":"10.1109/UCMMT45316.2018.9015652","DOIUrl":null,"url":null,"abstract":"This paper presents design of a high selectivity band pass filter having centre frequency as 0.22 THz and bandwidth as 10 GHz. Filter is designed using TE102 resonator and is implemented as 12th order direct coupled waveguide structure coupled through inductive windows. More than 110 dB suppression is found at ±5 GHz from pass band edges which shows that filter has very good selectivity (22 dB/GHz) around near out-of-band. Filter sensitivity and power handling analyses are carried out in HFSS and it is found that ±5μm precision with ±2μm surface roughness for machining doesn't significantly affect the response of the filter yet the filter is able to handle around 80Watts of power.","PeriodicalId":326539,"journal":{"name":"2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/UCMMT45316.2018.9015652","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
This paper presents design of a high selectivity band pass filter having centre frequency as 0.22 THz and bandwidth as 10 GHz. Filter is designed using TE102 resonator and is implemented as 12th order direct coupled waveguide structure coupled through inductive windows. More than 110 dB suppression is found at ±5 GHz from pass band edges which shows that filter has very good selectivity (22 dB/GHz) around near out-of-band. Filter sensitivity and power handling analyses are carried out in HFSS and it is found that ±5μm precision with ±2μm surface roughness for machining doesn't significantly affect the response of the filter yet the filter is able to handle around 80Watts of power.
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