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http://dx.doi.org/10.6109/JKIICE.2009.13.7.1255

Design and Implementation of BPF Using a Symmetric Coupled Line  

Kang, Sang-Gee (군산대학교)
Choi, Heung-Taek ((주)이엔에스 웨이브)
Lee, Jae-Myung ((주)Roswin)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.13, no.7, 2009 , pp. 1255-1260 More about this Journal
Abstract
Microstrip interdigital filter is designed with the width and length of a resonator, the gap distance between resonators and the location of a tap. When designing filters, it is a benefit to design with few design parameters comparing to many design parameters. In this paper we design and implement two microstrip interdigital filters operating in the UWB(Ultra Wide-Band) frequency band, one using a fixed width of a resonator and the other using a different width of resonators. The test results of the implemented filters show that the low-band high filter with a fixed width has the insertion loss of 1.49dB, -10dB band width of 720MHz, -35.7dBattenuation at 4.8GHzand below -13dB of S11. The filter with a different width of resonators has the insertion loss of 1.6dB, -10dBbandwidth of 1.63GHz and below-8dBof S11.
Keywords
Band Pass Filter; Interdigital filter; UWB:UItra Wide-Band;
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