International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 09 Issue: 07 | July 2022
p-ISSN: 2395-0072
www.irjet.net
Antenna Design with EBG Structure for S-band. Granxa Fernandes1, Sangam Borkar2 1Department
of Electronics and Telecommunication, Goa college of Engineering (Govt .of Goa), Goa India of Electronics and Telecommunication, Goa college of Engineering (Govt .of Goa), Goa India ------------------------------------------------------------------------***-------------------------------------------------------------------advantages it does have disadvantages like narrow Abstract- In wireless communication microstrip antenna 2Department
play an essential role in the system So In this project a microstrip has been designed to operate from 2 GHz to 4GHz.To improve the efficiency an Electromagnetic band gap structure has been .Electromagnetic band gap structures work as a stopband to the frequencies for which the antenna is designed. A substrate FR-4 has been used with the thickness of 1.6mm.The paper is proposed for the S band frequency. The electromagnetic band gap structure shape proposed for this antenna is fork like structure. The fork like structure possesses small size with easy to design as compared to the other structures. The Electromagnetic band gap structures enhances the performance of the microstrip patch antenna. The EBG structure will reduce the return loss and improve the bandwidth for S band application. In terms of bandwidth and return loss we simulated the proposed antenna design
bandwidth and low gain.
Keywords- Antenna bandwidth, Electromagnetic
Disadvantages
The basic microstrip antenna has a substrate of dielectric Flame Retardant-4 and a patch and ground below substrate. The feeding that will be used is coaxial feeding which comprise benefit of easy fabrication and optimization of the required output to the correct position. Advantages
band gap structure, microsrip patch antenna, return loss
1. INTRODUCTION In the recent years the communication system has become vital in the in the technology and electronics. This communication is done by the wireless communication due to which a large number of Antennas are introduced in the universe. These large number of Antennas create noise and Electromagnetic interference. So reduce this Electromagnetic Interference Electromagnetic Bad gap structures are introduced in the microstrip antenna.
The antenna is designed at 2.4 GHz with a vertical slot as shown in the figure. the antenna is designed on FR-4 substrate with a tan of 0.02 ,thickness of 1.6mm and relative permittivity of 4.4.The measured dimensions of the sotted patch are W=39 , L=43 , Ws=36.2 and Ls=12.5. Design Equations for a Patch W=C/2 fo( √( εr +1)/2 )
Microstrip antenna are planar antennas which resonate at a proposed frequency. The resonant frequency antennas which the widely used antenna due to the various applications In addition to that its increasing demand is due to its fabrication as it can be directly printed on the circuit board .A slot is introduced to increase the bandwidth of the antenna. The microstrip patch antenna have become demanding based on the various advantages like small in size ,low fabrication cost, light in weight. Along with the wide range of
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Impact Factor value: 7.529
Narrow bandwidth Can only work at low power Lower efficiency Low gain
1.2 Antenna Dimensions of Slotted patch
1.1 Microstrip Patch Antenna
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Low profile and weight Can be used at various frequency Low fabrication cost Have Linear and circular polarisation Can design different feeding
εeff
=
((εr +1)/2)+( (εr -1)/2)[1+12(h/W)]-1/2
Leff= C / (2fo √ εeff) ΔL= 0.412h [(εeff+0.3) 0.258)((W/h)+0.8)]
((W/h)+0.264)/(
εeff-
L=Leff -2ΔL
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