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http://dx.doi.org/10.5515/KJKIEES.2007.18.5.486

Design and Fabrication of a Minimum Insertion Loss Parallel-Coupled-Line-Filter for the Suppression of LO Harmonics  

Kim, Hyun-Mi (Department of Radio Science and Engineering, Chungnam National University)
Yang, Seong-Sik (Department of Radio Science and Engineering, Chungnam National University)
Oh, Hyun-Seok (Department of Radio Science and Engineering, Chungnam National University)
Yeom, Kyung-Whan (Department of Radio Science and Engineering, Chungnam National University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.18, no.5, 2007 , pp. 486-495 More about this Journal
Abstract
In this paper, we present the design procedure of BPF(Band Pass Filter) for the suppression of LO(Local Oscillator) harmonics. The required suppression at given harmonics is the key issues in such a filter design, while the bandwidth and the suppression of the unwanted signals are more important in the conventional RF filter design. In LO filter design the bandwidth is used for the minimization of the insertion loss for the desired signal. In addition, we propose the novel tuning procedure based on Momentum to consider the unknown parasitic effects, which usually are not included in the circuit design step and results in undesirable and frustrating tuning after fabrication.
Keywords
Parallel Coupled Microstrip Filter; Tuning;
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