In today's modern communication industry, antennas are the most important components required to create a communication link. Microstrip antennas are the most suited for aerospace and mobile applications because of their low profile, light weight and low power handling capacity. These antennas can be designed in a variety of shapes in order to obtain enhanced gain and bandwidth for dual band and tri-band operation. This book focus on a detailed study of how to design and simulate a microstrip fed rectangular patch antenna using IE3D software with effect of antenna dimensions length ( L ), width ( W ), relative dielectric constant , substrate thickness (t ) on the radiation parameters of bandwidth and gain. The design parameters of the antenna calculated using the transmission line model. Here antenna operates for tri- band operation, the operating bands are GSM , PCA and UTMS for antenna geometry -I and WLAN and WiMAX for antenna geometry -II. The fractional bandwidths (FB) after simulation obtain under criterion ( S_11 < -10 dB) are 6.45% for GSM [890-960 MHz], 4.25% for WLAN [2.40 - 2.51 GHz], 6.89% for PCA [1850-1990 MHz], 11.42 % for WiMAX [3.35 - 3.94 GHz], 9.09% for UTMS [1920-2170 MHz] and 18.18% for WLAN [5.02 - 6.63 GHz] and peak gain 2.43 dBi at 5.36 GHz.
Table of Contents
1 Introduction
1.1 Introduction
1.1.1 Overview of microstrip patch antenna
1.2 Feed technique
1.2.1 Microstrip feed line
1.2.2 Coaxial feed line
1.2.3 Aperture coupled feed
1.2.4 Proximity couple feed line
2 Literature survey
3 Problem definition
4 Objective of the book
5 Transmission line model
5.1 Fringing effects
5.2 Effective length, resonant frequency and effective width
5.3 Design
5.3.1 Design procedure
5.4 Conductance
5.5 Resonant input resistance
6 Design patch for tri-band operation
6.1 Antenna geometry I
6.1.1 Mathematical calculations of antenna geometry I
6.2 Antenna geometry - II
6.2.1 Mathematical calculations of antenna geometry II
7 Result and discussion
7.1 Antenna geometry I
7.1.1 Return loss
7.1.2 Voltage standing wave ratio (VSWR)
7.1.3 Current distribution
7.1.4 Radiation pattern
7.2 Antenna geometry II
7.2.1 Return loss
7.2.2 Voltage standing wave ratio (VSWR)
7.2.3 Radiation pattern
7.2.4 Gain
7.2.5 Current distribution
8 Comparison of antenna geometry
9 Conclusion
9.1 Scope for improvement
Objectives and Research Focus
This book provides a comprehensive study on the design and simulation of microstrip-fed rectangular patch antennas, specifically focusing on achieving multi-band operation for modern wireless communication standards through the transmission line model and IE3D simulation software.
- Design and simulation of compact microstrip patch antennas.
- Optimization of antenna dimensions for tri-band operation.
- Application of transmission line models to calculate antenna parameters.
- Comparative analysis of antenna geometry performance (Geometry I vs. Geometry II).
- Evaluation of bandwidth, gain, return loss, and VSWR for GSM, PCA, UTMS, WLAN, and WiMAX.
Excerpt from the Book
1.1 Introduction
Antenna is a metallic device (as rod or a wire) for radiating or receiving radio waves. It is a mean of transmitting and receiving radio waves. In another words antenna is transition structure between free space and guided device. The guided device or the transmission line may take the form of the coaxial line or a hollow pipe (waveguide), and is used to transport the electromagnetic energy from the transmitting source to the antenna or from antenna to the receiver. RF and microwave technologies are rapidly finding their way into commercial applications. Industrial applications such as satellite data transfer, vehicle tracking and paging systems have been among the first to be developed. Other applications include mobile telephony, Radio Frequency Identification systems (RFIDs), Direct Broadcast Television (DBS), Wireless Local Area Networks (LANs) and Personal Communications Systems (PCS). The intelligent vehicle highway of the future will guide us through traffic jams and systems using Global Positioning System (GPS) will tell us about our location. From being a technology that had its utilization mainly in telecommunications and radar applications, it is today the forefront technology used for wireless applications.
Summary of Chapters
1 Introduction: Provides a fundamental overview of antennas and their evolving role in wireless communication systems.
2 Literature survey: Reviews the historical development of microstrip antennas and summarizes key research contributions in the field of multi-band antenna design.
3 Problem definition: Identifies the challenges of designing antennas for multi-band operations and the necessity of precise parameter calculation.
4 Objective of the book: Outlines the specific goals for enhancing narrowband antenna performance and achieving multi-band functionality.
5 Transmission line model: Details the mathematical framework and design procedures for calculating microstrip patch antenna parameters including fringing effects and impedance.
6 Design patch for tri-band operation: Presents the step-by-step mathematical calculations and design specifications for two distinct antenna geometries.
7 Result and discussion: Analyzes the simulated performance metrics, including return loss, VSWR, and radiation patterns for the designed antennas.
8 Comparison of antenna geometry: Compares the efficiency and compactness of the two antenna designs based on tabular data.
9 Conclusion: Summarizes the success of the design process and highlights potential areas for future improvements.
Keywords
Compact microstrip, Tri-band, GSM, PCA, UTMS, WLAN, WiMAX, Antenna design, IE3D, Transmission line model, Fringing effects, Return loss, VSWR, Radiation pattern, Microstrip patch antenna
Frequently Asked Questions
What is the primary focus of this book?
The book focuses on the detailed design and simulation of microstrip-fed rectangular patch antennas optimized for multi-band performance in modern communication applications.
What are the central themes discussed in this work?
The core themes include microstrip antenna theory, the transmission line model, geometry optimization, simulation methodologies, and comparative performance analysis of patch designs.
What is the main objective of the research?
The primary goal is to increase the narrowband performance of patch antennas to achieve reliable tri-band operations suitable for services like GSM, WLAN, and WiMAX.
Which scientific methodology is utilized?
The work employs the transmission line model for initial parameter calculations and validates the design through simulation using the Method of Moments (MoM) via IE3D software.
What is covered in the main section of the book?
The main sections cover the derivation of antenna parameters, the specific design procedure for two different patch geometries, and an analysis of performance metrics like gain and return loss.
Which keywords characterize this research?
Key terms include Compact microstrip, Tri-band, GSM, PCA, UTMS, WLAN, WiMAX, and antenna simulation.
How does antenna geometry II compare to antenna geometry I?
According to the comparison table in Chapter 8, antenna geometry II is more compact and demonstrates better efficiency across various operating bands compared to geometry I.
Why are notches and stubs used in the antenna design?
Notches and symmetrical stubs are implemented on the radiating patches to achieve impedance matching and enable the desired multi-band characteristics.
What are the limitations mentioned in the conclusion?
The authors note that they focused on simulation using IE3D and were unable to perform physical fabrication or compare results against other simulators like HFSS or CST.
- Arbeit zitieren
- Prashant S. Mahajan (Autor:in), Jagadish B. Jadhav (Autor:in), Dr. Pramod J. Deore (Autor:in), 2013, Design and Implementation of Rectangular Patch Antenna for Tri-Band operation, München, GRIN Verlag, https://www.grin.com/document/295831
