Asymmetrical Single Cell Multiband Uni-Planar Mushroom Resonant Antenna
Keywords:
Composite right/left-handed transmission line (CRLH TL), multiband antenna, zeroth-order resonant antenna (ZORA)Abstract
A new asymmetrical zeroth-order resonant antenna with improved efficiency and widened impedance bandwidth is proposed. It comprises a rectangular patch, two shorted stub and coplanar waveguide (CPW) feed to have composite right/left handed (CRLH) features and easy fabrication process. The asymmetry helps to combine three resonance frequencies and extends the bandwidth up to 31%. The efficiency of the proposed antenna is greater than 94% over the entire bandwidth of 4.2 to 6.2 GHz. The proposed antenna has compact size, which can provide omnidirectional radiation pattern suitable for wireless applications. The proposed antenna has also a low frequency miniaturized resonance at GPS standard 1.57 GHz, while the second frequency band covers 802.11a/h/j/n/ac and 802.11p WLAN, dynamic frequency selection (DFS) and transmit power control (TPC) applications.
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References
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