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. In the late 1970 s micro strip antenna technology development began rapidly. International journal of science, engineering and technology research 2. The antenna patch can have different shapes, but is most likely rectangular. Leff the effective length of the patch is given by 4. The characteristics of the proposed patch antenna are compared with. Our patch antenna was designed based upon an ideal rectangular patch antenna. The width for each was held constant but calculated based upon 1. Especially return loss, vswr and bandwidth of our proposed patch antenna are much better compared to the conventional cmpa. Design simulation and fabrication of microstrip patch antenna 349 the proposed antenna is designed in lte band ii for 4g mimo communication. The main radiator is a rectangular patch made up of copper. Compared with conventional antennas, microstrip patch antennas have. The antenna is attractive due to its lowprofile conformal design, relatively low cost and very narrow bandwidth.
Feed line distributes rf power to different part of antenna. Introduction microstrip patch antennas have problems of low bandwidths. Patch antenna design of a dual patch triangular microstrip antenna dual patches offer wider bandwidth for wireless applications in the 2. By using one of any above mentioning techniques bandwidth of microstrip patch antenna can be improved significantly which will overcome limitation of microstrip patch antenna such as. Pdf design and simulation microstrip patch antenna using. Microstrip patch antenna cmpa which is designed for a single resonant frequency at 1. The aim of this chapter is to show various ways to overcome this problem by using various matching techniques for numerous patch antenna array schemes.
However, both of these patch substrate are non inverted and achievable gains of both antennas are below 8. 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. The proposed antenna is suitable for specific applications, such as security and military systems, which require a narrow bandwidth and a small antenna size. It consists of a flat rectangular sheet or patch of metal, mounted over a larger sheet of metal called a ground plane. Motilal nehru national institute of technology allahabad. The study of microstrip patch antennas has made great progress in recent years. This rectangular microstrip patch antenna is designed for wireless communication application that works at 2. Analysis of micro strip patch antenna using coaxial feed.
By using one of any above mentioning techniques bandwidth of microstrip patch antenna can be improved significantly which will overcome limitation of microstrip patch antenna such as narrow bandwidth. This work is mainly focused on increasing the gain as well as reducing the size of the unidirectional patch. In the early 1980s design and modeling micro strip antenna elements well established and workers turned their attentions to improving antenna performance features like bandwidth. Rectangular microstrip patch antenna design using ie3d. The patch is of length l, width w, and sitting on top of a substrate some dielectric circuit board of thickness h with permittivity. Antennas using patches as constitutive elements in an array are also possible. A shorting pin is included into the patch in section 3. The results obtain that microstrip patch antenna can be used as client antenna in computer and workable antenna for wireless fidelity.
Maxtena ceramic patch antennas maxtena offers five different ceramic patch gps antennas see fig. This paper presents a narrow band microstrip patch antenna for wireless communication. Rectaangular microstrip patch antenna for wireless. Thick size dielectric material with lower dielectric constant will provide good antenna performance. 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 is a popular printed resonant antenna for narrowband microwave wireless links that require semihemispherical coverage.
Equivalent circuit modelling of microstrip patch antenna mpa. Initially two rectangular patches were designed, one for each desired frequency. Microstrip antenna is one of the most popular types of printed antenna. Jun 03, 2015 the effect of changing substrate material and thickness on the performance of inset feed microstrip patch antenna. Advantages and disadvantages of microstrip patch antenna. Shape microstrip patch antenna for wideband applications. A microstrip patch antenna is a radiating patch on one side of a dielectric substrate, which has a ground plane on the underside 1, pg2. Tech student, electronics and communication, india.
Patch is a radiating element and it can be available in different shapes like square,rectangular,circular,triangular etc. This project is divided into three major parts which are. It also has a wide angle of beam in its radiation pattern. Microstrip antennae are very simple in construction using a conventional microstrip fabrication technique. Design and analysis of microstrip patch antenna arrays. Gain enhancement of a microstrip patch antenna using a.
For the particular resonate frequency the effective length of the patch is calculated by. The design specifications for the antenna are given as below. The effect of changing substrate material and thickness on the performance of inset feed microstrip patch antenna. This type of antenna had its first intense development in the. The em waves fringe off the top patch into the substrate, reflecting off the ground plane and radiates out into the air. In communication system antenna provide a perfect interface between the system and free space in order to transfer signal between and receiver. Isbn 9789535110194, pdf isbn 9789535163145, published 20306. The antenna is operating in lte band ii having frequencies of 1850 mhz1910 mhz which is. It provides better efficiency and better radiation and large operating bandwidth. The geometry of micro strip patch antenna is shown in fig. P, india abstract here we made an attempt to maximize the gain of microstrip patch antenna. Introduction to micro strip patch antenna electronics project. Microstrip patch antenna are low profile antennas, conformable to planar and nonplanar surfaces, simple and easy to manufacture using modern printed circuit technology, mechanically robust when. Designing for designing of a microstrip patch antenna, we have to select the resonant frequency and a dielectric medium for which antenna is to be designed.
The fundamentals of patch antenna design and performance. A microstrip patch antenna consists of a radiating patch on one side of a dielectric substrate and has a ground plane on the other side. Advancement in microstrip antennas with recent applications. Microstrip patch antenna design santa clara university. Also called patch antennas one of the most useful antennas at microwave frequencies f 1 ghz. Threeelement vectors of cartesian coordinates in meters. Design simulation and fabrication of microstrip patch antenna.
A microstrip patch antenna mpa consists of a conducting patch of any planar or nonplanar geometry on one side of a dielectric substrate with a ground plane on other side. Analysis and design of circular microstrip patch antenna at 5. The patch may be in a variety of shapes, but rectangular and circular are the most common. Ill use the terms microstrip antenna and patch antenna interchangeably. Analysis of micro strip patch antenna using coaxial feed and. In this project i have focused on making amicrostrip patch antenna. In this paper, a rectangular microstrip patch antenna is studied and the results are simulated using ie3d simulator at an operating frequency of 3 ghz. Sarwar hosain 2, sohag sarker 2, makhluk hossain prio 3, monir morshed 4, ajay krishno sarkar 3. The basics of patch antennas, updated orban microwave. The microstrip patch antenna array is designed for wlan applications, at an operating frequency of 2. In this paper we present a new patch antenna as a hexagonal patch operating in the industrial scientific medical ism frequency band at 2. The rectangular patch antenna is analyzed, and what is learned here will be applied to understanding pifas planar invertedf antennas. The use of slotted patch reduces the size of antenna and higher bandwidth, which is the area that can be improved with the proposed design.
The effect of changing substrate material and thickness on. Patch antennas the fundamentals of patch antenna design and performance by gary breed editorial director m icrostrip patch antennas also just called patch antennas are among the most common antenna types in use today, particularly in the popular frequency range of 1 to 6 ghz. Dual ushape microstrip patch antenna design for wimax applications. Design of a dual patch triangular microstrip antenna. On this page, well discuss the microstrip antenna, which is also commonly referred to as the patch antenna. Department of electrical engineering national institute of technology, rourkela odisha, india769008 certificate this is to certify that the thesis entitled design of ultra small. Barnes cranfield college of aeronautics, cranfield university t his paper investigates the design, measurement and characteristics. Directional patch antenna array design for desktop. Resonant frequency of the antenna 10ghz relative permittivity of the substrate 2.
We use a simple rectangular, half wave long, probefed patch operating in. A patch antenna is a type of radio antenna with a low profile, which can be mounted on a flat surface. Introduction this article introduces the basic concepts of patch antennas. The patch antenna, microstrip transmission line and ground plane are made of high conductivity metal typically copper. Directional patch antenna array design for desktop wireless internet abstract to improve desktop wireless internet access, two patch antenna configurations were investigated in order to find an alternative for a dipole antenna, which is commonly used for wifi access. The thickness of the ground plane or of the microstrip is not critically important. Abstract a small microstrip patch antenna is introduced. Jan 01, 2012 in this paper we present a new patch antenna as a hexagonal patch operating in the industrial scientific medical ism frequency band at 2. Wideband rectangular microstrip patch antenna using l. To ameliorate the return loss, directivity, bandwidth, vswr and other essential characteristics, a circular slot is introduced at the center of the ground plane. In this paper, a new inverted multislotted shape patch antenna is investigated for the gain and bandwidth. Microstrip patch antennas for broadband indoor wireless.
Introduction microstrip patch antennas mpas consist basically of three layers, a. It usually consists of a metal patch on top of a grounded dielectric substrate. The microstrip patch antenna is used in a wide range of applications since it is easy to design and fabricate. They are the original type of microstrip antenna described by howell in 1972. Recently, an eshaped patch antenna 11 and uslotted patch antenna 12 have been designed for wireless communications. It plays a very significant role in todays world of wireless communication systems. Microstrip antennae are very simple in construction using a.
The most common type of microstrip antenna is the patch antenna. The microstrip patch antenna has radiating patch on one side and ground on the other. But illustrates sizes and importance of good antenna design why microstrip antennas. A low profile, unidirectional, dual layer, and narrow bandwidth microstrip patch antenna is designed to resonate at 2. Dogbone slots field distribution normal slots field distribution design of wide bandwidth microstrip patch antenna guillaume derron and daniel h. We use a simple rectangular, half wave long, probefed patch operating in its fundamental mode as an example.
A prototype is made for validating the simulated results of the hexa band design. The return losses of the lower patch operating by itself shows one single main resonance, resulting in a very narrow useful bandwidth. The performance parameters were achieved with return loss 16. Radiation occurs mostly due to the fringing field between the patch and ground. Micro strip patch antenna electronics project report. Equivalent circuit modelling of microstrip patch antenna. After the study of several literature, we find that, uslot microstrip antenna provides bandwidth up to 30% while eshaped patch antenna can increase bandwidth above 30% compared eshape microstrip patch antenna design for wireless.
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