Design of a Compact Wideband Log Periodic Spur Line Band stop Filter
Somdotta Roy Choudhury1, Susanta Kr. Parui2, Santanu Das3
1Somdotta Roy Choudhury, Dept. of Electronics & Telecommunication Engg, Bengal Engineering and Science University, Shibpur, Howrah, India.
2Susanta Kumar Parui, Dept. of Electronics & Telecommunication Engg, Bengal Engineering and Science University, Shibpur, Howrah, India.
3Santanu Das, Dept. of Electronics & Telecommunication Engg, Bengal Engineering and Science University, Shibpur, Howrah, India.
Manuscript received on September 22, 2013. | Revised Manuscript received on October 11, 2013. | Manuscript published on October 30, 2013. | PP: 5-13 | Volume-3, Issue-1, October 2013. | Retrieval Number: A2136103113/2013©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: A novel technique is introduced to design a wideband, compact band stop filter (BSF). This filter consists of a numbers of spur line resonators arranged in a log-periodic manner. The stop band of the filter is centered at 5 GHz for wireless application. Using the proposed technique the fractional bandwidth is enhanced from 7% to 68% when the individual spur line resonators are applied as log-periodic filter. There is a good agreement between the measured and simulated performances. This kind of filter is very much compact in nature as compared to the shunt-stub or coupled-line band stop filters since the spur line structure is confined to a transmission line.
Keywords: Spur line, band stop filter, log periodicity, wide band.