Rectangular patch antenna theory

Microstrip patch antennas or simply patch antenna are increasingly useful because the antenna is printed directly onto a circuit board. A design rule for insetfed rectangular microstrip patch antenna m a matin, a. Pdf design of rectangular microstrip patch antenna for 1. The basics of patch antennas, updated orban microwave. Are there any formulas for calculating the performance of. Richards, theory and experiment on microstrip antennas. But illustrates sizes and importance of good antenna design why microstrip antennas. The outer conductor of the coaxial cable is connected to the ground plane, and the center conductor is extended up to the patch antenna. Microstrip patch antenna construction and design aperture. The rectangular patch antenna is the simplest configuration of microstrip patch antennas. Pdf rectangular microstrip patch antenna rmpa is a simple antenna, light, and easily. The patchmicrostrip object is a microstrip patch antenna.

A scheme is devised to reduce the mismatch problem associated with thick substrates. The parameter specifications of rectangular microstrip patch antenna are mentioned in table 1. There are numerous substrates that can be used for the design of microstrip antennas. Richards, theory and experiment on microstrip antennas, ieee trans. In theory, the gain can be made as high as one wishes by. The frequency range used for the application of slot antenna is 300 mhz to 30 ghz. In this video, i have explained microstrip antenna or patch antenna by following outlines. All of the parameters in a rectangular patch antenna design l, w, h, permittivity control the properties of the antenna. Ictpituursi school on wireless networking for development the abdus salam international centre for theoretical physics ictp, trieste italy, 5 to 24 february 2007.

The center conductor of the feeding coaxial cable is connected to one side of the slot, and the outside conductor of the cable to the other side of the slot. This website is designed to present a comprehensive overview of antennas, from design, to measurement and theory. The antenna array has been designed and simulated on fr4 substrate with dielectric constant of 4. Patch antenna menu all of the parameters in a rectangular patch antenna design l, w, h, permittivity control the properties of the antenna. The rectangular patch antenna is a lowprofile antenna composed of a patch of metal mounted onto a substrate that is backed by a metallic ground plane. Circular sector and rectangular patch antenna structure are shown in. Pattern analysis of the rectangular microstrip patch antenna. Rectangular patch antennas are very easy to fabricate. Rectaangular microstrip patch antenna for wireless. Pattern analysis of the rectangular microstrip patch antenna vivekananda lanka subrahmanya final master degree thesis 30 ects, thesis no 42009. Analysis of rectangular microstrip antennas ntrs nasa. As such, this page gives a general idea of how the parameters affect performance, in order to understand the design process. The rectangular patch antenna is analyzed, and what is learned here will be. Experimental study of stacked rectangular microstrip antenna.

The geometry of the microstrip antenna is shown in figure 1. Antenna theory radiation pattern radiation is the term used to represent the emission or reception of wave front at the antenna, specifying its strength. Thus the element and feed line, and usually other elements, power dividers, etc. Threeelement vectors of cartesian coordinates in meters. Model of a rectangular patch antenna on composite substrate is analytically developed in this study. The patch antenna is a good place to start for antenna fundamentals with more coming. The proposed rectangular patch antenna has been devise using glass epoxy substrate. A microstrip patch antenna for radar application is presented.

Common microstrip antenna shapes are square, rectangular, circular and elliptical, but any. Updated with color and gray scale illustrations, a companion website housing supplementary material, and new sections covering recent developments in antenna analysis and designthis book introduces the fundamental principles of antenna theory and explains how to apply them to the analysis, design, and measurements of antennas. Design rectangular patch antenna using hfss part 1 youtube. Analysis and design of rectangular microstrip patch antenna at 2. Comparison between rectangular and circular patch antennas array. This tm notation often leads to confusion and here is an attempt to explain that. The most commonly employed microstrip antenna is a rectangular patch which looks like a truncated microstrip transmission line. The microstrip antenna has the luxury of being low profile, lowpriced, easy to fabricate and modify, flexible in shape with rectangular, circular, triangular, elliptical or any shape needed, and. Design of a rectangular microstrip patch antenna using. Pdf design of rectangular microstrip patch antenna researchgate. Antenna arrays phased arrays an antenna array often called a phased array is a set of 2 or more antennas. These are calculated from the above discussed formulae.

I am currently working on designing a patch antenna using matlab and was successful for a microstrip feed with the help of the formulas provided in antenna theory. The rectangular pa tch will be treated as reference antenna, because there is a series of more mature theory as a basis for analysis of rectangular patch antenna, such as the transmission line method, cavity model method 2. Comparison of circular sector and rectangular patch. It consists of a flat rectangular sheet or patch of metal, mounted over a larger sheet of metal called a ground plane. Rectangular patch antennas are notoriously narrowband. Microstrip antennas are becoming very widespread within the mobile phone market. In order to simplify analysis and performance estimation, generally square, rectangular. The dimensions of an ideal rectangular patch were calculated using the equations shown in figure 2. The disadvantage of rectangular micro strip patch antennas is low operating. Hfss design of rectangular patch antenna using microstrip line feedingedge feeding qurratul ayn. Figure 1 uses a cartesian coordinate system, where the x and y axes are parallel with the groundplane and the zaxis is perpendicular to it. The equations used to calculate the patch antenna dimensions. All simulation for conventional and dgs antennas had been done in cstmws. In telecommunication, a microstrip antenna usually means an antenna fabricated using.

A design rule for insetfed rectangular microstrip patch. The radiating element and feed lines are placed by the process of photoetching on the dielectric material. Additional benefits of patch antennas is that they are easily fabricated making them cost effective. This radiation pattern shows that the antenna radiates more power in a certain direction than another direction. Simulation of rectangular microstrip antenna by integrating matlab in visual basic diyala journal of engineering sciences, vol. In this case, each vector starts at the origin and lies along the specified points on the x, y, and zaxes. A patch antenna is a type of radio antenna with a low profile, which can be mounted on a flat surface. Due to the variety of methods of analysis and design, and the. Absract in this paper, a rectangular microstrip patch antenna is designed. Microstrip patch antenna array design to improve better. Experimental study of stacked rectangular microstrip.

Ieee transactions on microwave theory and techniques, 262. Antenna theory micro strip micro strip antennas are lowprofile antennas. This shift is due to fringing fields around the antenna. Chapter 1 introduction this chapter consists of a brief introduction to my project including problemstatement, objectives, scope of work and outline of my thesis. Thus the design and simulation of microstrip rectangular patch antenna was successfully designed and analyzed using ansoft hfss. The conventional patch antenna equations were taken from 10 and 11 asmention previously in chapter 2. They are the original type of microstrip antenna described by howell in 1972. Thesis of miniaturization of patch antenna using dgs. Ogunlade michael adegoke, ismael saad eltoum department of electronics engineering. Dec 04, 2012 introduction in its most basic form, a microstrip patch antenna consists of a radiating patch on oneside of a dielectric substrate which has a ground plane on the other side for good antenna performance, a thick dielectric substrate having a low dielectric constant isdesirable since this provides better efficiency, larger bandwidth and better. Antenna geometry the structure of the proposed antenna is shown in figure 2 below. Microstrip antenna an overview sciencedirect topics. The gain of these antennas is between the ranges between 8dbi to 20dbi. A simple design of a dualfrequency microstrip antenna using a single rectangular patch and a single probe feed is described.

A rectangular slot is made on the conducting sheet. This paper presents that, the detail steps of designing and simulating the rectangular patch antenna and rectangular patch antenna array in kuband. Typical radiation pattern of microstrip antenna the patch is generally made up of a conducting material such as copper or gold and can take any possible shape like rectangular, circular, triangular, elliptical or some other common shape. In this work, the simulation tool of ie3d is used to study the performance and gain of the rectangular microstrip patch antenna. An intuitive tutorial of antennas and antenna theory. First, the length of the patch l controls the resonant frequency as seen here. In our paper, an insetfed microstrip patch antenna has been designed and the dependency of resonant frequency on the notch gap and the feed line geometry has been studied. Analysis and design of rectangular microstrip patch.

Comparison of different shapes in microstrip patch antenna. 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. Rectangular microstrip patch structure 2 patch antennas can be in many different shapes. Figure 1 uses a cartesian coordinate system, where the x and y axes are parallel with the. Analysis and design of the rectangular microstrip patch antennas. The basic antenna element is a strip conductor of length l and width w, on a dielectric substrate. The use of slotted patch reduces the size of antenna and higher. Rectangular microstrip antenna a, and its side view b because of the fringing effects, electrically the patch of the microstrip antenna looks greater than its physical dimensions. Microstrip patch antenna array design to improve better gains. The objective of this paper is to design, and fabricate a 16 element rectangular microstrip patch array antenna. We use the cavity model to explain the operation of the patch antenna. Idris, design and analysis of rectangular microstrip patch antenna for global wlan applications using matlab and cst microstudio software, international journal of engineering. Microstrip antennas can also be fed from underneath via a probe as shown in figure 3.

Pdf design and analysis of microstrip patch antenna for. It is used in applications from mhz to thz frequencies when size, weight, cost, reliability, and aerodynamic performance are constraints. Design a rectangular microstrip patch antenna for wlan. The isotropic point source radiator is one of the basic theoretical antenna which.

The methods developed for efficient wideband patch antenna design are based on one or more of the following principles. The direct feed, the inset feed, the aperture feed and the coupled or indirect feed are presented for microstrip antennas. Unnecessarily complicated math is avoided throughout. Experimental results of the antenna resonating at frequencies of about. Generally, patch antenna has a shape of rectangle, and it can be feed with copper cable. For a rectangular patch, the length l of the element is usually. International journal of engineering trends and technology. Comparison of circular sector and rectangular patch antenna. These are preliminary notes, intended only for distribution among the participants. Analysis of an airspaced patch antenna near 1800 mhz. The following image shows a microstrip or patch antenna. Design of a rectangular microstrip patch antenna using inset. Open access journal page 25 it is worth to mention that, the rectangular patch width w has a minor effect on the resonant frequency and.

Ill use the terms microstrip antenna and patch antenna interchangeably. There is a variety of shapes available for microstrip patch antenna. The proposed metamaterial is a layer of periodically situated nonmagnetic metal cylinders of circular cross section symmetrically imbedded into a dielectric substrate. The most widely used printedcircuit antenna is the microstrip patch, which in its simplest form is a rectangular or circular patch of metal fed by the microstrip upper conductor. In this paper, conventional shapes like rectangular, triangular. Microstrip or patch antennas are becoming increasingly useful because they can be printed directly onto a circuit board. Antenna theory near and far fields after the antenna parameters discussed in the previous chapter, another important topic of consideration is the near field and the far field regions of the ante. The patch is normally made of conducting material such as copper or gold and can take any possible shape. Pdf design and analysis quadband patch antenna for. The performance parameters were achieved with return loss 16. Patch antennas are low cost, have a low profile and are easily fabricated. These slot antennas can be formed by simply making a cut on the surface, where they are mounted on.

A metal patch mounted at a ground level with a dielectric material inbetween constitutes a micro strip or patch. Secondly, the microstrip antenna was designed to operate at 100 mhz, but it is resonant at approximately 96 mhz. The rectangular patch antenna is designed so that it can operate at the resonance frequency. Hfss tutorial 2microstrip patch antenna with a cutting slot coaxial feed how to cut slot in patch duration. Microstrip antenna or patch antenna basics in antenna and.

Design and analysis of microstrip patch antenna arrays. It consists of a thin conducting plate, or patch, in the form of a rectangle. Coaxialfed rectangular patch antenna lumerical support. This is a video tutorial on how to design a rectangular patch antenna using ansoft hfss. On the use of slots in the design of patch antennas. The radiating patch and the feed lines are usually photo etched on the dielectric substrate.

For a rectangular patch, the length l of the rectangular microstrip patch antenna using coaxial probe feeding technique to operate in sband alak majumder department of ece, nit agartala jirania, west tripura, india. Hfsss microstrip patch antenna design part1basics of antenna design using hfss software duration. Several methods have been presented in the last years to improve it, s such as. The commonly available shapes of patch antenna are rectangular, circular, dipole, triangular, square and elliptical. The operating frequency of array is from 12 to 18 ghz. Usually, the patch or microstrip is choosen to be square, circular or rectangular in shape for the ease of analysis and fabrication. The parameter of conventional rectangular patch antenna is based onformula and while dgs patch antennas size are tuned to work at the desirefrequency. Their low profile design, often square or rectangular, allows them to be mounted to flat surfaces. When air is used as the dielectric substrate, the length of the rectangular microstrip antenna is approximately onehalf of a freespace wavelength. The basic principles are illustrated here for a rectangular patch, but the principles apply similarly for other patch shapes. Theory and experiment on microstrip antennas, ieee transactions on antennas and propagation, ap27, 1979 pp. The signals from the antennas are combined or processed in order to achieve improved performance over that of a single antenna.

511 606 1121 125 421 1014 728 358 22 1443 1421 1542 1587 1380 1375 788 348 831 1213 932 1175 274 1514 1459 953 256 1357 1064 155 612 1653 1609 1438 502 778 65 811 784 1117 346 752 522 285