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http://dx.doi.org/10.5515/KJKIEES.2012.23.12.1359

A Compact C-Band Semi-Lumped Lowpass Filter with Broad Stopband Using a Chip Inductor  

Jang, Ki-Eon (School of Electrical Engineering and Computer Science, Kyungpook National University)
Lee, Gi-Moon (Precision-Guided Munitions System Integration Department, Hanwha Corporation)
Kim, Ha-Chul (Department of Electrical Engineering, Republic of Korea Naval Academy)
Choi, Hyun-Chul (School of Electrical Engineering and Computer Science, Kyungpook National University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.23, no.12, 2012 , pp. 1359-1364 More about this Journal
Abstract
The C-band semi-lumped lowpass filter with broad stopband and compact size characteristic using chip inductor is proposed. To provide an additional attenuation pole in stopband by SRF, a separable inductor is added to proposed structure, and it has broad stopband characteristic. The third order elliptic function lowpass filter with chip inductor(L: 9.1 nH, SRF: 5.5 GHz, Q: 25) has insertion loss of 0.38 dB, cutoff frequency of 920 MHz, broad stopband(below 20 dB) of 1.43~7.8 GHz and the size is reduced 37.4 % compared to distributed inductor.
Keywords
Elliptic Function Lowpass Filter; Chip Inductor; Self Resonance Frequency;
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