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1 results

  • Chamfered edge filtering ultra-wideband antenna integrated with H-unit cell-loaded feed line for improved out-of-band rejection

  • Bhakkiyalakshmi Ramakrishnan, Vasanthi Murugiah Sivashanmugham
  • Journal:
    International Journal of Microwave and Wireless Technologies / Volume 16 / Issue 1 / February 2024
    Published online by Cambridge University Press:
    06 June 2023, pp. 118-126
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  • This paper proposes a passive filtering antenna for ultra-wideband (UWB) applications. The edge chamfering technique is adopted to construct the UWB antenna. The designed UWB antenna has a fractional bandwidth of 135%. A low-pass filter (LPF) is embedded on the feed line of the UWB antenna to convert it into a narrowband antenna that works at 2.45 GHz with 29.5% fractional bandwidth by removing the high-frequency components. The LPF is a transmission line with a stepped impedance configuration loaded with an H-shaped unit cell. The proposed filtering antenna is fabricated and tested. The measured results indicate the gain is >4.2 dBi and the radiation efficiency is >75%.