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Subject: Electronics and Communication Engineering × Author: Mittal, Paridhi × End date: 2017 × Start date: 2010 × Thesis Type: M.Tech. ×
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    ThesisItemOpen Access
    Hexagonal-patch slotted partial-ground ultra wideband metamaterial antenna for wireless applications
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2016-07) Mittal, Paridhi; Paras
  • Thumbnail Image
    ThesisItemOpen Access
    Hexagonal-patch slotted partial-ground ultra wideband metamaterial antenna for wireless applications
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2016-07) Mittal, Paridhi; Paras
    Metamaterial, due to their non conventional EM properties improves the performance of antenna in terms of gain, bandwidth and is useful in the field of wireless communication. Ultra Wide Band (UWB) communication system has become an attractive topic in wireless communication since the Federal Communication Commission (FCC) has allocated utilization of the 3.1–10.6 GHz unlicensed band for commercial UWB application. The main objective of this thesis is to develop a multiband antenna in UWB frequency range using metamaterial for wireless application. The proposed antenna has been designed using Transmission Line Model at setup frequency of 4.6 GHz. The simulation of the antenna is done using HFSS 15.0 to calculate the different parameters. The simulated S11 is below -10 dB in the frequency range from 2.8 to 4.8 GHz, 7.2 to 7.7 GHz, 9.1 to 9.9 GHz, 13.3 to 13.9 GHz, and 15.2 to 17.6 GHz. The bandwidth obtained is 2 GHz, 0.5 GHz, 0.8 GHz, 0.6 GHz, and 2.4 GHz, respectively with VSWR in accordance with the S11. Two metamaterial SRR has been used to increase the gain of the antenna. The slots in the patch and ground are made to increase the resonating bands. The proposed antenna is fabricated on FR4substrate and SMA connector is soldered to fabricated antenna and connected to PNA for the measurement of S11 and VSWR. The measured S11 shows that there are dips at 2.6 GHz, 4.7 GHz, 7.4 GHz, 9.5 GHz, 13.6 GHz, 15.7 GHz and 17.34 GHz measuring -17.37dB, -21.05 dB, -26.21 dB, 51.81 dB, -19.41 dB, -19.21dB and -11.77 dB. Radiation pattern is measured in an anechoic chamber. The proposed antenna has been fabricated and the measured results are found to be close with the simulated results.