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20191
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Subject: Electronic and Communication Engineering × Author: Singh, Prabhat × Type: Thesis × Thesis Type: M.Tech ×
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    ThesisItemOpen Access
    A wideband microstrip patch antenna with single band-notch characteristic using defected ground structure
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2019-09) Singh, Prabhat; Paras
    With the rapid growth of wireless communications in recent years, users need multiple frequency bands at the same time to access different services such as voice video and data. Therefore, it has become to have microstrip antenna (MSA) with a wide band to avoid employing multiple antennas to fulfil requirement of the users. The MSA is a revolution in the field of wireless applications due to its low cost, ease of installation, performance and low profile structure which make it a high quality contender. for many communication equipment. The main objective of this proposed work is to develop a wideband microstrip antenna using band-notch characteristic with DGS for wireless applications in the frequency range of 3.3-11.5 GHz. The proposed antenna is designed using Cavity model and is simulated and optimized using HFSSv.15 with a centre frequency of 5.3 GHz. Proposed antenna is used to operate at the frequency range of 3.3-11.5 GHz in wireless applications like WiMAX (3.6 GHz), Hi-LAN (5.15-5.35 GHz), WLAN IEEE802a (5.2 GHZ), and DSRC for a car to car communication (5.850-5.925 GHz) but band-notch characteristic used to reject band at frequency range (5.1-5.8). A 5.1-5.8 GHz might be used for WiMAX and other wireless applications. The proposed antenna is fabricated on a FR4 substrate having thickness 1.6 mm and loss tangent of 0.02. The fabricated antenna has dimensions 35×32.9×1.6 . The parameters in terms of reflection coefficient and VSWR for the proposed antenna (fabricated) are measured and compared with the simulated ones, which show good agreement. The proposed antenna is also compared with the earlier designed antennas. The measured broad bandwidth with reflection coefficient below -10 dB is found to be 8200 MHz in the frequency range from 3.3-11.5 GHz. Simulated peak gain of 8.92 dBi and radiation efficiency of 90-98% for the proposed antenna in the frequency range from 3.3-11.5 GHz are observed. The proposed antenna has a stable radiation pattern in both E and H planes.