Printed UWB Pacman-Shaped Antenna with Two Frequency Rejection Bands
关键词:
Monopole antennas, notch filters, ultra wideband antennas摘要
In this paper, the design and analysis of microstrip-fed low-profile, compact ultra-wideband (UWB) monopole antenna with two band-notches characteristics is carried out. The antenna is mounted on a low-cost FR-4 substrate with dimensions of 25×38×1.6 mm3, and relative permittivity of 4.4. The original shape of the patch is circular with radius of 11.5 mm, and then a sector is removed from the patch (making it a Pacmanshaped antenna) to improve the impedance bandwidth. The proposed antenna provides an impedance bandwidth between 2.9-15 GHz with better than 10 dB return loss and has nearly an omni-directional radiation pattern. Additionally, the antenna can reject the interference from WiMAX (3.5 GHz center frequency) and WLAN (5.5 GHz center frequency).
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