Scholarlink

<p>In this work, an Ultra-Wideband (UWB) Band Pass Filter (BPF) has been designed and developed incorporating hexagonal ring structures and excited using quarter wavelength interdigital Parallel Coupled Microstrip Line (PCML). A lumped-element equivalent circuit has been modelled to study the distributed structure behaviour. The passband of the proposed UWB BPF spans from 3.02&#xa0;GHz to 10.2&#xa0;GHz with a minimum insertion loss of 0.7&#xa0;dB and return loss of more than 13&#xa0;dB. The filter exhibits a fractional bandwidth of 108.6%, higher roll-off 159&#xa0;dB/decade along with out-of-band rejection upto 8&#xa0;GHz. A flat group delay of 0.37&#xa0;ns is observed throughout the passband. Further, the design has been modified to introduce three notches in the passband which mitigate possible interferences from C-band, upper C-band, and X-band communication systems. Notches are implemented using open stubs followed by a meander line structure and a novel Open Complementary Split Ring Resonator (OCSRR) structure for band rejection at centre frequencies 4.3&#xa0;GHz, 6.5&#xa0;GHz and 8.8&#xa0;GHz with rejection levels of 14.88&#xa0;dB, 23.24&#xa0;dB, and 22.5&#xa0;dB respectively. The novelty of the proposed work lies in the integration of hexagonal resonators with interdigital PCML to achieve wideband operation, along with the implementation of independently controlled triple notch bands using a combination of OCSRR and meander line resonators. The filter is fabricated on a high-loss and cost-effective FR4 substrate, and demonstrates reliable performance for UWB communication compared to expensive and low-loss substrates.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Design of a Hexagonal Triple Notch UWB Filter Utilizing an OCSRR and Meander Line Resonators

  • 期刊论文

  • 发表日期：

    2026年6月18日

查看全文
  • Partha Protim Kalita,
  • Gouree Shankar Das,
  • Trishna Doloi,
  • Yatish Beria,
  • Akash Buragohain

摘要

In this work, an Ultra-Wideband (UWB) Band Pass Filter (BPF) has been designed and developed incorporating hexagonal ring structures and excited using quarter wavelength interdigital Parallel Coupled Microstrip Line (PCML). A lumped-element equivalent circuit has been modelled to study the distributed structure behaviour. The passband of the proposed UWB BPF spans from 3.02 GHz to 10.2 GHz with a minimum insertion loss of 0.7 dB and return loss of more than 13 dB. The filter exhibits a fractional bandwidth of 108.6%, higher roll-off 159 dB/decade along with out-of-band rejection upto 8 GHz. A flat group delay of 0.37 ns is observed throughout the passband. Further, the design has been modified to introduce three notches in the passband which mitigate possible interferences from C-band, upper C-band, and X-band communication systems. Notches are implemented using open stubs followed by a meander line structure and a novel Open Complementary Split Ring Resonator (OCSRR) structure for band rejection at centre frequencies 4.3 GHz, 6.5 GHz and 8.8 GHz with rejection levels of 14.88 dB, 23.24 dB, and 22.5 dB respectively. The novelty of the proposed work lies in the integration of hexagonal resonators with interdigital PCML to achieve wideband operation, along with the implementation of independently controlled triple notch bands using a combination of OCSRR and meander line resonators. The filter is fabricated on a high-loss and cost-effective FR4 substrate, and demonstrates reliable performance for UWB communication compared to expensive and low-loss substrates.