Author(s) :   Dr. Priyanka Bansal, Shikha


Abstract : This paper presents a new design of a compact microstrip antenna with variable band-notched filtering characteristics for super ultra-wideband (UWB) applications such as 5G/IoT networks. More efficient radiation patterns and characteristic impedance are accomplished in the proposed structure by producing steps with optimised proper widths and angles in the lower edges of the quasi-square patch antenna and by using a new way of changing the ground plane. Furthermore, omnidirectional low cross-polarized H-plane radiation patterns are achieved in the frequency range of 3-11 GHz. Furthermore, its radiation patterns are enhanced between 11 and 14.5 GHz, and its performance is increased, particularly with tuning capacitors between 14.5 and 20 GHz. Furthermore, its frequency bandwidth with VSWR 2 ranges from 3 GHz to 50 GHz, including 5G networks as well as ultra-wideband (UWB) and super-wideband (SWB) communications. A rectangular slot on the patch is utilised to produce an integrated band-notch filter in the structure to avoid interference with other wireless systems such as wireless local area networks (WLANs), and this specification may be engaged or deactivated by a PIN diode. Furthermore, the centre frequency of the filter can be tuned using only a varactor diode or a variable capacitor and/or by changing the position of the capacitors in the frequency range of about 3.5-6 GHz, rejecting interference from all WLANs and even their lower and upper bands, and nulls in the radiation patterns can be avoided.


DOI : DOI link of article


Pages : 1-10

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