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The Bandpass Filter with Transmission Zero Using . the Effect of Effective Inductance and Multi-layer PCB  

Kim, Yu-Seon (Department of Electronic Engineering, Chonnam National University)
Nam, Hun (LG-Nortel)
Lee, Geon-Cheon (Department of Electronic Engineering, Chonnam National University)
Seo, In-Jong (Department of Electronic Engineering, Chonnam National University)
Lim, Yeong-Seog (Department of Electronic Engineering, Chonnam National University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.17, no.11, 2006 , pp. 1089-1095 More about this Journal
Abstract
In this paper, the circuit analysis of three-dimensional bandpass filter with transmission zero in multi-layer printed circuit board is presented. The equivalent circuit of bandpass filter is evaluated by microwave network analysis. Compare to the established paper that have configured the circuit model of filter except the effect of distribute element, the proposed model can include the effect. As a result, the multi-layer PCB bandpass filter with transmission zero has designed by extracting mutual capacitance from electrical component inside inductor. The structure size is only $10mm{\times}20mm{\times}1.251mm$. Measured data of the bandpass filter indicate 1.9 dB of insertion loss and 28 dB of return loss at the center frequency of 1.84 GHz, as well as 43 dB attenuation at the refraction frequency of 2.78 GHz.
Keywords
Multi-layer PCB; Bandpass Filter; Distribute Element; Transmission Zero;
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