• Title/Summary/Keyword: Frequence domain

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Design and Fabrication of Miniaturized Dual-bandpass filter Using Rectangular ring resonator and Interdigital capacitive feeding-structure (Rectangular Ring 공진기와 Interdigital Capacitive 급전구조를 이용한 소형화된 이중대역통과필터의 설계 및 제작)

  • Yoon, Hyun-Soo;Kang, Sang-Rok;Choi, Byoung-Ha
    • Journal of Navigation and Port Research
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    • v.31 no.5 s.121
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    • pp.415-420
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    • 2007
  • In this paper, we have designed and fabricated a new type of bandpass-filter that used rectangular ring and interdigital capacitive feeding-structure. The filter is applied the modified rectangular ring and interdigital capacitive feeding-structure in patch, which reduce rho size of filter and IEEE 802. 11 correspond to wireless LAN domain(2.45GHz and 5.2GHz) for operating. As a result, the design and fabrication process of the filter become simple and the size of it is reduced more than 60% compared with RF filter are available conventional PEMBF(Parallel Edge-coupled Microstrip Bandpass Filter) of accounted circuit by minimum stage, measurement result of fabricated filter, center frequence is down 2.408GHz and 5.075GHz. input return loss is -39.169dB at 2.408GHz, -40.922dB at 5.075GHz. insertion loss is -0.437dB at 2.408GHz, -1.669dB at 5.075GHz.