Design and Analysis of Microstrip Patch Antenna for High Gain Wifi Applications using ANSYS HFSS

DOI : 10.17577/IJERTCONV10IS09010

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Design and Analysis of Microstrip Patch Antenna for High Gain Wifi Applications using ANSYS HFSS

Dr. R. Jamuna

Head of the Department, Department of Electronics and Communication

Engineering, Sri Shanmugha College of Engineering and Technology Salem,Tamilnadu, India

Ms . T. T. Aathirai

UG Student,

Department of Electronics and Communication Engineering,Sri Shanmugha College of Engineering and Technology Salem,Tamilnadu India

Ms. M. Gowsalya

UG Student,

Department of Electronics and Communication Engineering, Sri Shanmugha College of Engineering and Technology,Salem,Tamilnadu,India

Ms. S. Vanathi

UG Student,

Department of Electronics and Communication Engineering, Sri Shanmugha College of Engineering and Technology,Salem,Tamilnadu,India

Abstract:- Microstrip patch antennas has advantages such as low weight, low profile, and low cost made them the perfect choice for communication systems engineers (1-2). Four patches are designed, and the results are compared to six patch antennas that arise from insert feed with edge feed design and analysis. The feed is designed to work between 1.2 and 6.8 GHz, and the approximation coupled microstrip antenna is constructed with the position of the feed to find out various field intensity such as electrical and magnetic field intensity, polarization, passivity, and polar plots obtained using ANSYS HFSS software and then the respective return losses and bandwidth range.

Keyword:- High bandwidth, HFSS simulation software, microstrip,gain,directivity.


The microstrip antenna, is an antenna with a small size, lightweight, low profile, and low manufacturing cost, these characteristics of this antenna are the reason that it is being used widely especially in industrial sectors, such as, mobile satellite communications, direct broadcast satellite services, global positioning system. A microstrip antenna consists of a radiating metallic patch or an array of patches, the patch acts approximately as a resonant cavity, on one side of a thin non-conducting, supporting substrate panel with a ground plane on the other side of the panel. Each patch can be made into a variety of shapes with the most popular shapes being rectangular and circular (11-20).


The aim of this project is optimize and analysis of rectangular patch microstrip antenna with four and six poles also to improve the bandwidth of the antenna. During the designing process of the Microstrip Antenna, our team will try to increase the bandwidth of the Antenna as much as possible using HFSS Designing Software by using different design and feeding techniques. To enhance the bandwidth of the microstrip antenna insert feed microstrip

antenna, then compare the return loss bandwidth and the performance for each design. (3-10)

Fig.1 Block Diagram of the Proposed System


Rapid development in personal communication systems (PCS), mobile satellite communication (MSC), direct broadcast system (DBS), Wireless local area network (WLAN) and intelligent vehicle highway system (IVHS) demands that Microstrip antenna and arrays must improve further in design, shape and performance. The dimension of electronic devices are decreasing and there is a need to develop Microstrip antennas which are smaller in size and in different shapes so that the consumers can enjoy diversity of shape which are aesthetically pleasing to them without compromising the efficiency of the device in terms of frequency of operation and the bandwidth. Hence the need to analyze Microstrip antennas using arbitrarily shaped patches to ascertain optimum performance.


The proposed method has advantages like those Microstrip antenna is easy to integrate them with MICs and MMICs. They are robust when mounted on a rigid surface of the

devices. Feedline and matching network can be simultaneous with the antenna structure. Eliminates feed radiation and provides high bandwidth.


The rectangular microstrip patch will be designed and patch is designed for 50 and the length for a 180 degree phase delay. The methods used to setup the simulation are outlined as the following steps being followed:

  • Layers Setup.

  • Model Setup.

  • Excitation Setup.

  • Analysis Setup.

  • Plotting Results.


    HFSS (High Frequency Structure Simulator/ solution solver) software is the industry-standard simulation tool for3-D full-wave electromagnetic field simulation and is essential for the design of high frequency and high-speed component design. This software automatically divides the geometric model into a large number of tetrahedron. The value of a vector field quantity (such as the H-field or E- field) at points inside each tetrahedron is interpolated from the vertices of the tetrahedron.


    For many applications, the advantages of microstrip antennas far outweigh their limitations. Some system applications for which microstrip antennas have been developed include:

  • Satellite communication, direct broadcast services (DBS)

  • Wireless communications.

  • Doppler and other radars.

  • Radio altimeters.

  • Command and control systems.

  • Missiles and telemetry.

    Remote sensing and environmental instrumentation.

  • Mobile radio (pagers, telephones)

Parameters Value (mm)

Ta ble 1. List of optimized values of antenna design parameters

Parameters Value (mm)

Substrate Length (L s) 8

Substrate Width (Ws) 8

Length of the Patch (L p) 2.5

Width of the Patch (Wp) 3.5

Feed Length (L f) 2

Feed Width (W f) 1

Slit Lengt h (L 1) 2

Slit wid th (W1) 2.65

Slit Gap (G 1) 0.85

Slit Gap (G 2) 0.5

Substrate Thickness 0.8

Ground Thickness 0.035

Permittivity 3.66

Ground Cut (L sg) 5.1

Ground Cut (W sg) 1.5


We compare the result that get from insert feed with edge feed design and analysis, and decide which design technique is the best, which obtain good bandwidth and return loss. The project will use the best possible matching techniques in such a way so that there will be a minimum return loss. Design proximity coupled feed microstrip antenna, and observing how this design improve the bandwidth.


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