A triangular patch monopole antenna with DGS ground having CSRR based controllable notch characteristics for UWB applications
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Date
2019-08
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
Monopole configuration and DGS in antenna is used to achieve a high bandwidthUWB antenna (3.1-10.6 GHz) with acceptable gain. The main concern of UWB antenna is that they are sensitive towards electromagnetic interferences with existing narrowband wireless communication systems, so it is necessary to design antennas with multiband filtering characteristics to avoid interferences. Therefore, it is necessary to design the UWB antenna with band notched characteristics to reduce the complexity and make cost effective systems. The proposed work consists of a triangular patch antenna monopole antenna having dual band notch characteristics for the UWB applications. The size of the antenna is 24×28×1.6 mm3.Dielectric substrate used is FR4 epoxy having dielectric constant εr = 4.4 and loss tangenttan 𝛿 = 0.02. The variant of proposed antenna is also designed to confirm the controllability feature of CSRR notch. The proposed antenna resonates in the UWB range from 3.1 to 11 GHz and peak gain of 7 dB at 10.84 GHz (Proposed Antenna). The dual notch band characteristics due to inverted U slot and CSRR is obtained from 4.9 to 5.36 GHz to 6.1 to 6.78 GHz for the proposed antenna. The variant of proposed antenna shows the shifting of CSRR notch from 6.1 to 6.78 GHz to 7.2 to 7.8 GHz by reducing the size of CSRR by 0.5 mm. The geometric parameters of inverted U slot & CSRRs are chosen to eliminate interference with the WLAN/Future mobile communications or X band.
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