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2021-01-15
Compact CPW-Fed Asymmetric UWB Antenna with Sufficient WLAN-Band Rejection
By
Progress In Electromagnetics Research C, Vol. 108, 201-210, 2021
Abstract
A coplanar waveguide fed asymmetric rectangular antenna with sufficient WLAN-band rejection is presented for ultra-wideband applications. The antenna uses an asymmetric rectangular patch, modified feedline, and defected coplanar ground plane for obtaining ultra-wideband performance. An inverted-L shaped slit in the radiating patch is used for realizing the WLAN band-rejection. The antenna is designed on 1.6 mm thick FR-4 substrate having an area of 12×16 mm2 (0.169λL×0.225λL). An impedance bandwidth of 11.49 GHz with a WLAN band-notch from 5.15-5.86 GHz is achieved. In addition to this, desirable radiation characteristics in terms of stable radiation patterns, peak realized gain of 4.5 dBi, and maximum total efficiency of 81% are achieved in the pass-band. In the notched-band, the peak gain and total efficiency reduces to -1.3 dB and 40%, respectively. Measured results agree well with simulated results. This antenna structure has fractional bandwidth of 115.18% and a bandwidth dimension ratio of 3029, which is comparable or better than that of similar structures available in the literature. The proposed antenna has desirable time domain performance in terms of fidelity factor, group delay, isolation and S21 phase.
Citation
Rahul Kumar Garg Maroor Vikraman Deepak Nair Sarthak Singhal Raghuvir S. Tomar , "Compact CPW-Fed Asymmetric UWB Antenna with Sufficient WLAN-Band Rejection," Progress In Electromagnetics Research C, Vol. 108, 201-210, 2021.
doi:10.2528/PIERC20112505
http://www.jpier.org/PIERC/pier.php?paper=20112505
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