PDF | This article presents an overview of the microstrip patch antenna and its design techniques. Basically a microstrip patch antenna. The purpose of this paper is to design a microstrip rectangular antenna in Advance Design System Momentum (ADS). The resonant frequency of antenna is GHz. The proposed rectangular patch antenna has been devise using Glass Epoxy substrate (FR4) with dielectric constant (er = Microstrip Antennas. Prof. Girish Kumar. Electrical Engineering Department, IIT Bombay [email protected] ()

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Microstrip Antenna Pdf

The transmission-line model represents the microstrip antenna by two slots, separated by a low-impedance transmission line of length L. Looking at a . Microstrip Patch Antenna: a Survey Arun Kumar Sharma, 1st (Author) Danveer Mandal, 2nd (Author) wm-greece.info (ECE) Assistant Professor (ECE) I.E.T Bhaddal, Dist . TABLE OF CONTENTS LIST OF FIGURES CHAPTER 1: INTRODUCTION History Micro strip Antenna Feeding Methods Rectangular Patch .

Rectangular Microstrip Antenna Introduction to Patch Antennas Microstrip or patch antennas are becoming increasingly useful because they can be printed directly onto a circuit board. Microstrip antennas are becoming very widespread within the mobile phone market. Patch antennas are low cost, have a low profile and are easily fabricated. Consider the microstrip antenna shown in Figure 1, fed by a microstrip transmission line. The patch antenna, microstrip transmission line and ground plane are made of high conductivity metal typically copper. The patch is of length L, width W, and sitting on top of a substrate some dielectric circuit board of thickness h with permittivity. The thickness of the ground plane or of the microstrip is not critically important. Typically the height h is much smaller than the wavelength of operation, but should not be much smaller than 0. Geometry of Microstrip Patch Antenna. The frequency of operation of the patch antenna of Figure 1 is determined by the length L. The center frequency will be approximately given by: The above equation says that the microstrip antenna should have a length equal to one half of a wavelength within the dielectric substrate medium. The width W of the microstrip antenna controls the input impedance. Larger widths also can increase the bandwidth. For a square patch antenna fed in the manner above, the input impedance will be on the order of Ohms.

RT W1 1. The proposed antenna consists of the patch, the substrate, ground plane and microstrip line for impedance matching.

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The bottom layer is the ground plane that Figure 2. Proposed rectangular micro strip patch Antenna using HFSS covers the rectangular shape substrate with a side of This antenna has been able to achieved the desired value of the VSWR of 1. Simulated results of 3D, EH plane pattern are shown in figure5. The proposed antenna can cover WLAN applications. Figure 3. Figure 6. The return Loss Figure 4. IJE Figure 5. Rectangular micro strip patch antenna design enclosed inside radiation Air-Box.

Figure 7. The VSWR of studied antenna. From the 2. Radiation pattern refers to the direction of the results obtained, we could observed that the designed antenna electromagnetic waves radiates away from the antenna. It is a is having a band frequency operation of 2. The voltage VSWR standing wave ratio rectangular micristrip patch antenna as the function of space is 1. This indicates the impedance matching between the field co-ordinate.

From the simulated analysis of the solution set up and the load and ,the value should be equal to 1 in an ideal of HFSS, the solution frequency was set to 2. In addition there are two types of fields namely, 5.

By setting the EH Plane, the far field radiation The antenna is having return loss of This designed antenna is simulated on HFSS software. Similarly, the values of theta start from and stop For this antenna, a sufficient band-width was achieved by at with a step size of 1.

Input impedance of transmission line pdf

The values of phi and theta are utilizing microstrip line technique, the desired frequency of good from the simulation results as shown in the radiation 2. In actual fact, a microstrip patch antenna achieveable.

The designed microstrip antenna is optimized to radiates normally to its patch surface. The radiation patterns of cover WLAN. We sincerely thank our supervisor Prof. Radiation Pattern and encouragement during our research. James, P. Handbook of microstrip antennas, I. Mailloux, J. Mcllvenna and N. Pues, A. December Related Papers. All microstrip low cost and low profile, smaller in dimensions and ease of antennas can be divided in to four basic categories.

Moreover, the microstrip patch antennas can provide dual and circular polarization, dual frequency operation, Microstrip Antennas broad band-width, feedline flexibility.

In this paper we discuss the microstrip antenna, types of microstrip antenna, feeding techniques with their advantages and disadvantages over conventional microwave antennas.

Broadband-Microstrip-Antenna.pdf - Broadband Microstrip...

Deschamps first proposed the concept of the Microstrip antenna MSA in However, practical antennas were developed by Munson and Howell in the s. Often microstrip antennas are also referred to as microstrip patch antennas, or simply patch antennas. The unique property of the microstrip patch antenna is its two- dimensional structure. Antenna is a transducer designed to transmit or receive electromagnetic waves.

Microstrip antenna Figure2: Common shapes of Microstrip patch elements in its simplest configuration are shown in Fig1. It consists of a radiating patch on one side of dielectric substrate which has a ground plane on other side.

Microstrip Patch Antenna A microstrip antenna in its simplest form consists of a radiating patch on one side of a dielectric substrate and a ground plane on the other side.

The radiating elements and the feed lines are usually photo etched on the dielectric substrate. The microstrip antenna radiates relatively broad beam broadside to the plane of substrate. Thus the microstrip antenna has a very low profile and can be fabricated using printed circuit photolithographic technology. The radiating patch may be square, rectangular, thin strip dipole , circular, elliptical, triangular or any other configuration.

There are many configurations that can be used to feed microstrip antennas. The four most popular are the microstrip line, coaxial probe, aperture coupling and proximity coupling. There are mainly two analysis methods for patch antennas- transmission line model and cavity model. A large number of Fig 1: Microstrip antenna configuration microstrip parch antenna have been studied to date. These patches are used Coaxial-Line feed is feeding method in which the inner for the simplest and the most demanding applications.

The circular patch antenna has the plane. Advantage of coaxial feeding is easy to advantage of their radiation pattern being symmetric. A fabricate, easy to match, low spurious radiation and its rectangular microstrip patch antenna in its simplest form is disadvantage is narrow bandwidth and more difficult to shown in figure3.

Coaxial probe feed patch antenna The microstrip feed line is easy to fabricate, simple to match by controlling the inset position and rather simple to model. It is a conducting strip, usually of much smaller width compared to the patch.

However the disadvantage of this method is that as substrate Fig.

Structure of rectangular patch antenna thickness increases, surface wave and spurious feed radiation increases which limit the bandwidth. The characteristics of microstrip patch antenna, microstrip slot antenna and printed dipole antenna are compared in Table 1.


Microstrip line feed patch antenna and circular triangular shape 5 Dual Frequency Possible Possible Possible The aperture coupling consists of two substrates operation separated by ground plane. This arrangement allows independent optimization of the III.

(PDF) Microstrip Patch Antenna | Abhishek Garg - wm-greece.info

Feeding Techniques feed mechanism and the radiating element. A high dielectric material is used for the bottom substrate and There are many configurations that can be used to feed thick low dielectric constant material for the top microstrip antennas. The four most popular are the substrate. The ground plane between the substrates microstrip line, coaxial probe, aperture coupling and also isolates the feed from the radiating element and proximity coupling.

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