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Compact Low Pass Filter Design for L-Band Application

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Author(s): Dhirendra Kumar | Asok De

Journal: Journal of Electromagnetic Analysis and Applications
ISSN 1942-0730

Volume: 03;
Issue: 04;
Start page: 115;
Date: 2011;
Original page

Keywords: Low Pass Filter | Chebyshev Prototype | Stepped Impedance Etc

ABSTRACT
An effective technique to design compact low pass filter has been proposed in this paper. The proposed method is highly effective for L-band applications. Low impedance microstrip lines are arranged such that they work as open stubs to increase the selectivity of the filter. Using the proposed technique about 57% size reduction has been realized with sharper roll off characteristics. An empirical expression is derived to determine the dimension of resonators. For cut-off frequency of 1.7 GHz the investigated method has been fabricated and tested. There is a close agreement be-tween simulated and measured results
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