This document describes the design and implementation of a circular microstrip patch antenna at 5.8GHz using HFSS simulation software. The objective is to reduce the size of the antenna compared to a rectangular design at the target frequency. Key steps include calculating antenna dimensions, creating the design layout in HFSS including the ground plane, circular patch, and feed line, and simulating the antenna to analyze properties like gain across frequencies. Simulation results show the circular patch antenna achieves gain between 5-6dBi at 5.8GHz as desired. In conclusion, microstrip antennas offer advantages like low profile and compatibility with printed circuits, and HFSS enables designing complex antenna configurations.

1. BABA INSTITUTE OF TECHNOLOGYAND SCIENCES
Approved by AICTE & affiliated to JNTUK
Accredited by NAAC
VISAKHAPATNAM
DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING
DESIGN AND IMPLEMENTATION OF CIRCULAR MICROSTRIP
PATCH ANTENNA AT 5.8GHz
Under the Guidance of
Mr. M. Ravi Kishore,
M . Tech.,(Ph . D.)
Associate Professor,
ECE Department.
P.SUKANYA 19NR1A0463
T.MOUNIKA 20NR5A0411
N.BALA SAI 20NR5A0408
Presented by

2. Contents :
 Abstract
 Objective
 Literature Survey
 History
 Introduction
 Application
 Advantage
 Conclusion
 Reference

3. Abstract:
 In the present study circular microstrip patch antenna is
designed for the Ultra High Frequency (UHF) band of
5.8 GHz.
 Designing the effective shape of a microstrip patch
antenna for Wi-Fi / WLAN application using HFSS
software.
 Analysing gain of different frequency ranges by using
HFSS simulation software results for prototype
microstrip antenna.
Keywords: Antenna , Microstrip , HFSS.

4. Objective:
 The main objective of the work is to obtain the reduction
in the size of circular antenna compared to rectangular for
some frequency of operation.
 To design a microstrip antenna using HFSS design
software.
 To observe the gain of the microstrip antenna designed
using HFSS software simulation environment.

5. Literature Survey :
S.K Jain, S.N. Sinha & A. Patnaik (2009).
“Analysis of Coaxial Fed Dual Patch Multilayer
X/Ku Band Antenna Using Artificial Neural Network.”
Vandana Vikas Thakare, Pramod Singhal & Kamya Das
(2008).
“ Calculation of Microstrip Antenna Bandwidth
using Artificial Neural Network.”

6. History :
 The microstrip antenna was first introduced by
Munson in a symposium paper in 1972.
 Which was followed by a journal paper in 1974.
 These papers discussed both the wraparound
microstrip antenna and the rectangular patch .
 They are original types of microstrip antenna
described by Howell in 1972.
 The two metal sheets together form a resonant piece
of microstrip transmission.

7. Introduction:
 Antenna is an electrical device which converts
electrical current into radio waves and vice versa. It
usually used with a radio transmitter and radio
receiver .
 Need of antenna arise when two persons want to
communicate between them when wired
communication is not possible.
 Radio waves are electromagnetic waves which carry
signals through a medium at the speed of light with
almost no transmission loss.
 Radio waves are also used for measurements including
radar , GPS.

8. Different types of microstrip antennas.
Rectangular Square Dipole Triangle
Circle Elliptical Circular Ring

9. Radiation pattern of microstrip antenna

10. Circular Microstrip Patch Antenna

11. Introduction of HFSS Software
 HIGH FREQUENCY STRUCTURAL SIMULATOR
(HFSS) is a 3D Electromagnetic (EM) simulation
software for designing and simulating high frequency
electronic products such as antennas, antenna arrays,
RF or micro wave components.
 It provides environment for antenna simulations and
obtain accurate results.

12. Flow Chart for HFSS Antenna design

13. Steps for Designing Microstrip Patch Antenna
in HFSS
Step 1 : Select the antenna type and calculate the
dimensions and design parameters according to the
requirements.
Step 2 : Calculate effective length and width for designing
microstrip antenna by using following formula.

14. Step 3 : After calculating the dimensions of microstrip
antenna start creating new project in HFSS software.
Step 4 : Create ground plane and select copper as
material and substrate material as FR4.

15. Step 5 : now create the rectangular patch on the top of
substrate and create the rectangular feed line and unite to
the circular patch.

16. Step 6 : Now create feed port to the circular patch on the
substrate.

17. CIRCULAR PATCH –HFSS Designing 1-Terminal S Parameter
Port 1

18. CIRCULAR PATCH –HFSS Design 1- System Gain Plot 1

19. CIRCULAR PATCH –HFSS Design 1 – Re Plot 1

20. CIRCULAR PATCH – HFSS Design 1 – System Gain Plot 2

21. CIRCULAR PATCH – HFSS Design 1 –Gain Plot

22. Applications:
 Network accessing points.
 Wifi and Wireless LAN applications.
 Radio local area networks.
 WiMAX networks, wireless audio and video
system.

23. Advantages :
 Light weight and low fabrication cost.
 Supports both , linear as well as circular polarization.
 Can be easily integrated with microwave integrated
circuits .
 Capable of dual and triple frequency operations.
 Mechanically robust when mounted on rigid surface.

24. Conclusion :
 Microstrip antenna are preferred for majority of their
applications This is because of the inherent advantages
such as size miniaturization , power consumption ,
simplicity , compatibility with printed – circuit
technology , low profile , light weight , lower returns
loss , good radiation properties , small size , planar .
 Even many other antenna types can also be designed
using HFSS software .
 In future many more complicated antenna designs can
also be implemented .

25. Reference:
 J. B. Bradley, “Neural networks: A comprehensive
foundation,” Inf. Process. Manage., vol. 31, no. 5, p.
786, Sep. 1995.
 K.-L. Wong, “Printed double-T monopole antenna
for 2.4/5.2 GHz dual-band WLAN operations,”
IEEE Trans. Antennas Propagation ., vol. 51, no. 9,
pp. 2187–2192, Sep. 2003.
 K.-C. Lee and T.-N. Lin, “Application of neural
networks to analyses of nonlinearly loaded antenna
arrays including mutual coupling effects,” IEEE
Trans. Antennas Propagation ., vol. 53, no. 3, pp.
1126–1132, Mar. 2005.

26. THANK YOU