Microstrip antennas have been one of the most innovative topics in antenna theory and design in recent years, and are increasingly finding application in a wide range of modern microwave systems. Siddaiah procedia computer science 85 2016 401 a 409 fig. Rectangular patch antenna basics and design problem. Design parameters and tradeoffs are presented for microstrip antennas. However, the microstrip wavetrapping effects inhibit the radiation mechanism and must be taken into account in antenna design. Pdf in the broad context of wireless body area networks, wearable antenna is the key element for providing flexibility and easy integration with. There are several reasons why microstrip antennas are so popular. It plays a very significant role in todays world of wireless communication systems. Microstrip antenna design parameters and tradeoffs. This paper presents a personal overview of the development of microstrip patch antennas. Antenna theory and microstrip antennas offers a uniquely balanced analysis of antenna fundamentals and microstrip antennas. Microstrip patch antennas are very popular in wireless communication because of its low profile, lightweight, low production cost. Google for microstrip patch antenna handbook or go into the arrl magazine or any other ham radio organisations.
Microstrip patch antennas world scientific publishing. The design specifications for the antenna are given as below. Patch antenna with a quarterwavelength matching section. The patch may be in a variety of shapes, but rectangular and circular are the most common. Microstrip antenna an overview sciencedirect topics. The most common type of microstrip antenna is the patch antenna. Thus, the microstrip antenna analysis problem reduces to that of finding the edge voltage distribution for a given excitation and for a specified mode. Mar 21, 2015 the basic geometry of a microstrip patch antenna mpa consists of a metallic patch which is either printed on a grounded substrate or suspended above a ground plane. Antenna theory micro strip micro strip antennas are lowprofile antennas.
Theory and experiment on microstrip patch antennas with shorting walls. The dielectric constant that controls the resonance of the antenna is the. The goal is to understand the radiation mechanism, polarization, patterns. Design of a rectangular microstrip patch antenna using.
Microstrip or patch antennas have become the favorite of antenna designers because of its versatility and advantages of planar profile, ease of fabrication, compatibility with integrated circuit technology, and conformability with a shaped surfac. Nov 22, 2016 this is the design of microstrip antenna for wireless local area network. Wavetrapping effects in substrates involve the study of surface waves and discontinuities in open waveguide structures. Richards, theory and experiment on microstrip antennas, ieee trans. An individual microstrip antenna consists of a patch of metal foil of various. This unit will give the basic picture regarding microstrip antenna configurations, methods of analysis and some feeding techniques. Microstrip patch antenna array design to improve better. In the drawing above, blue area is the substrate and brown area represents the top conducting layer which is half of the antenna.
A feed system supplies the rf power, and a ground plane is at the bottom of the patch antenna, sustaining the substrate. All of the parameters in a rectangular patch antenna design l, w, h, permittivity control the properties of the antenna. The antenna is attractive due to its lowprofile conformal design, relatively low cost and very narrow bandwidth. Design of a rectangular microstrip patch antenna using inset. Theory and experiment on microstrip patch antennas with shorting. The chapter begins by discussing the transmission line model and the cavity model before going on to look at the radiation pattern of a linear rectangular patch, quarterwave microstrip antennas. The image below shows two ways to feed the microstrip patch, on the left is a microstrip feed and on the right is a coax feed. Pdf design and simulation of microstrip patch array antenna. In the four decades since, there are literally thousands of papers on this antenna. Here is the link page to the various patch antenna and microstrip antenna topics. Microstrip patch antenna design santa clara university.
The basics of patch antennas, updated orban microwave. In the coaxial case, the center conductor is directly connected to the patch and the outer conductor to the. In this section, well discuss the microstrip antenna, which is also commonly referred to as the patch antenna. It shows characteristic curves for many type of microstip antennas. Analysis and design of circular microstrip patch antenna at 5. The dielectric constant that controls the resonance of the antenna is the effective dielectric constant of the microstrip line. The basic principles are illustrated here for a rectangular patch, but the principles apply similarly for other patch shapes. Antenna theory radiation pattern radiation is the term used to represent the emission or reception of wave front at the antenna, specifying its strength.
Also called patch antennas one of the most useful antennas at microwave frequencies f 1 ghz. Microstrip antenna wikimili, the best wikipedia reader. In this video, i have explained microstrip antenna or patch antenna by following outlines. Their low profile design, often square or rectangular, allows them to be mounted to flat surfaces. The rectangular patch antenna is analyzed, and what is learned here will be applied to understanding pifas planar invertedf antennas. This rectangular microstrip patch antenna is designed for wireless communication application that works at 2.
The antenna is usually fed either by a coaxial probe or a stripline. P, india abstract here we made an attempt to maximize the gain of microstrip patch antenna. The microstrip patch antenna array is designed for wlan applications, at an operating frequency of 2. A variant of the patch antenna commonly used in mobile phones is the shorted patch antenna, or planar invertedf antenna pifa. The design and simulation of patch antennas is widely used in mobile cellular phones today, and our emphasis in this work is on optimization of a 2. These methods are accurate for regular patch geometries. Microstrip antennae are very simple in construction using a conventional microstrip fabrication technique. The gain of these antennas is between the ranges between 8dbi to 20dbi. Antenna theory and microstrip antennas electronic resource. Microstrip patch antennas have become the favorite of antenna designers because of its versatility and advantages of planar profile, ease of fabrication, compatibility with integrated circuit technology, and conformability with a shaped surface. Properties of a basic microstrip patch a microstrip or patch antenna is a lowprofile antenna that has a number of advantages. Analysis and design principles of microwave antennas microstrip patch antenna construction and design aperture antenna.
How to get started with designing a microstrip patch antenna. Microstrip patch antenna array design to improve better gains. The antenna is operating in lte band ii having frequencies of 1850 mhz1910 mhz which is uplink frequency. How to get started with designing a microstrip patch. The return loss and the various gain plots have been studied along with the radiation patterns. This is the design of microstrip antenna for wireless local area network.
The aim of this book is to provide a coherent account of the theory, analysis, and design of these antennas, as well as some recent developments. A patch antenna is a narrowband, widebeam antenna fabricated by etching the antenna element pattern in metal trace bonded to an insulating dielectric substrate, such as a printed circuit board, with a continuous metal layer bonded to the. The radiating elements and the feed lines are usually photoetched on the dielectric substrate. In the past few years, the concept of creating microwave antennas using microstrip has attracted increasing attention and viable practical designs are now emerging. A microstrip patch antenna can be one of the candidates for the integrated antennas due to its lowcost, lightweight and planar structure but can suffer from the diffraction of surface wave at the edges of finite substrates with a high dielectric constant, such as ltcc 2. Pdf micro strip patch antenna and its applications. Microstrip antenna is one of the most popular types of printed antenna. There is another bottom layer underneath blue area covering the whole area that is the ground. Microstrip antenna or patch antenna basics in antenna and wave propagation by engineering funda in this video, i have explained microstrip antenna or patch antenna by following outlines. Often microstrip antennas are also referred to as patch antennas. As such, this page gives a general idea of how the parameters affect performance, in order to understand the design process.
The microstrip antenna can also be matched to a transmission line of characteristic impedance z0 by using a quarterwavelength transmission line of characteristic impedance z1 as shown in figure 2. Motilal nehru national institute of technology allahabad. The study of microstrip patch antennas has made great progress in recent years. Looking at the parameters of the length, the length is slightly less than. A patch antenna is a narrowband, widebeam antenna fabricated by etching the antenna element pattern in metal trace bonded to an insulating dielectric substrate, such as a printed circuit board, with a continuous metal layer bonded to the opposite side. It also has a wide angle of beam in its radiation pattern. The above equation says that the microstrip antenna should have a length equal to one half of a wavelength within the dielectric substrate medium. Microstrip antennae are very simple in construction using a. When i was young not even in university i had an identical task to design narrow. Properties of a basic microstrip patch a microstrip or patch antenna is a lowprofile antenna that has a number of advantages over other antennas. The concept of the microstrip patch antenna originated in the 1950s, but it did not attract serious attention until the 1970s. Design simulation and fabrication of microstrip patch antenna 349 the proposed antenna is designed in lte band ii for 4g mimo communication.
Concise and readable, it provides theoretical background, application materials, and details of recent progress. A microstrip or patch antenna is a lowprofile antenna that has a number of. The microstrip patch antenna is used in a wide range of applications since it is easy to design and fabricate. Generally, patch antenna has a shape of rectangle, and it can be feed with copper cable or microstrip line in our case. Fang microstrip antenna design handbook garg et al title says it all, but a few inaccuracies have been found antenna theory constantine balanis used for antennas i elen 715. The present work deal with the design of a triple band, dual layer microstrip patch antenna. The top metallic flat region, which is called the patch antenna, sits on a dielectric substrate. Experimental and calculated results based on the finitedifference. This paper begins with a brief overview of the basic characteristics of microstrip antennas. Pdf a flexible microstrip antenna for health monitoring. The width w of the microstrip antenna controls the input impedance.
The radiation pattern of microstrip or patch antenna is broad. Most often, microstrip antennas are made by etching the patch from a printed circuit board with conductor on both sides. Microstrip patch antennas research papers academia. The compatibility of microstrip antennas with integrated electronics is another great advantage. Wood in the past few years, the concept of creating microwave antennas using microstrip has attracted increasing attention and viable practical designs are now emerging. Microstrip antenna or patch antenna basics in antenna and wave. Jan 22, 2020 the most common type of microstrip antenna is the patch antenna. Multiple patch antennas on the same substrate see image called microstrip antennas, can be used to make high gain array antennas, and phased arrays in which the beam can be electronically steered. It usually consists of a metal patch on top of a grounded dielectric substrate. Compared with conventional antennas, microstrip patch antennas have. Future trends and new applications a special issue journal published by hindawi the explosive growth in the demand for wireless communication and information transfer using handsets and personal communication pcs devices has created the need for major advancements of antenna designs, as a fundamental part of any. As an example, the size must increase to have it work at lower frequencies. Microstrip antennas the analysis and design of arrays. If the ratio lw is close to unity, the radiation pattern will be symmetric but may not provide a resonable input impedance.
This is a very interesting 17 chapter book, runs some theory and concept in the chapters 1 till 8. The goal is to understand the radiation mechanism, polarization, patterns, impedance and bandwidth. However, the gain and bandwidth of the microstrip patch antenna. That isbecause the microstrip patch antenna is constructed on the theory based on onehalf wavelength. Mar 11, 20 looking at the parameters of the length, the length is slightly less than. View microstrip patch antennas research papers on academia. Doesnt cover the microstrip approach towards building the patch antenna, not that it has any significance, but just to point out. In this video we simulate various results of antenna parameter. Design simulation and fabrication of microstrip patch antenna. Analysis and design of the rectangular microstrip patch antennas.
The microstrip patch antenna calculator determines the length l and width w of a rectangular microstrip patch antenna for a given resonant frequency or vice versa. What dielectric constant defines the half wavelength. Microstrip patch antennas or simply patch antenna are increasingly useful because the antenna is printed directly onto a circuit board. Antennas using patches as constitutive elements in an array are also possible. The purpose of this monograph is to present the reader with an appreciation of the underlying physical action, uptodate theoretical treatments, useful antenna design approaches and the overall stateoftheart situation. Microstrip antennas have become fashionable in some wireless communications systems, such as in the use of arrays with parabolic reflectors or even in the use of a patch antenna in the back of a cellular phone, as shown in figure 5.
Design and simulation of microstrip patch array antenna. The results obtain that microstrip patch antenna can be used as client antenna in computer and workable antenna for wireless fidelity. The permittivity should be low for large bandwidth but high to make the patch antenna smaller. Ill use the terms microstrip antenna and patch antenna interchangeably. The basic geometry of a microstrip patch antenna mpa consists of a metallic patch which is either printed on a grounded substrate or suspended above a ground plane. A personal overview of the development of microstrip patch. We use the cavity model to explain the operation of the patch antenna. The goal is to match the input impedance zin to the transmission line z0. A metal patch mounted at a ground level with a dielectric material inbetween constitutes a micro strip or patch. Pdf the study of microstrip patch antennas has made great progress in recent years. Additional benefits of patch antennas is that they are easily fabricated making them cost effective.
538 1266 962 270 725 1064 829 94 184 485 763 852 1285 142 607 364 818 1261 355 1147 1187 119 130 225 1228 1386 35 231 265 300 44 1185 944 1359 1098 23 304 1412 497