Abstract-A circular wide-slot UWB antenna with dual bandnotched characteristics is proposed in this paper. The microstripfed antenna consists of a calabash-shaped feeding patch and a metal ground with a circular slot etched. Dual band-notched characteristics are achieved by introducing arc-shaped parasitic strip and slot etched on the ground plane. According to the measured results, the proposed antenna can operate at the range of 2.91-11.45 GHz with VSWR < 2 for UWB applications, except the notched bands of 3.38-3.71 GHz and 5.39-6.27 GHz for the 3.5 GHz WiMAX and 5.8 GHz WLAN, respectively.
A novel single-layer broadband coplanar waveguidefed antenna with band-rejected characteristic is proposed for WLAN/WiMAX operation. First, the broadband characteristic (2.43-5.97 GHz) is achieved by a CPW-fed patch antenna with a dual-Y slot. Then, a single slit is inserted on the radiating patch or ground plane to introduce a notched band. The proposed antenna has a compact size of 40 × 25 mm 2. The broadband characteristic and band-rejected functions of the proposed antennas are implemented and measured. Two types of antennas were studied. Measured notchedband impedance bandwidths (return loss < 10 dB) are 370 MHz and 1050 MHz, respectively, which satisfies the requirements for WLAN and WiMAX applications. Detailed design steps and experimental results for the designs are studied and investigated in this paper.
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