Design of miniaturized multiband microstrip patch antenna using defected ground structure mudasar rashid1, mehre e munir2, jehanzeb khan4 3 dept. The ag structure changes the reflection phase in accordance with the polarization state of the incident wave. Microstrip patch antenna using cst microwave studio defected ground structure based microstrip patch patch antenna for sband. The paper presents the design analysis of rectangular. The basic structure of the microstrip patch antenna is shown in figure 1.
The second group focused on the design and simulation of patch antennas which are widely used in cell phones today with an emphasis on optimization of a 1. The major problems of the single element microstrip antennas are low gain and narrow bandwidth which limit their wide applications. A simple microstrip patch antenna consists of a conducting patch and ground plane between them is a dielectric medium called the substrate having a particular value of dielectric constant. A patch antenna is made of several components first is the ground plane which acts as the reference for the antenna to sit on top of. Design of miniaturized multiband microstrip patch antenna.
It is a popular printed resonant antenna for narrowband microwave wireless links that require semihemispherical coverage. A microstrip patch antenna structure is disclosed having increased bandwidth and reduced coupling while maintaining low profile capabilities. The design process starts by a simple hexagon patch antenna fed by a microstrip line and simulated in the frequency range of 3. The present situation plan is to create a simple geometrical shaped structure of the microstrip antenna, which would give decent broadband. The paper presents a design of circularly polarized microstrip antenna with dual feed and employs electromagnetic band gap ebg structure to improve antenna efficiency and bandwidth. The following image shows a microstrip or patch antenna. Hfsss microstrip patch antenna design part1basics of antenna design using hfss software. The dielectric layer can be manipulated to fit different. The circular micro strip patch antenna as shown in figure 1. The above equation says that the microstrip antenna should have a length equal to one half of a wavelength within the dielectric substrate medium. Design and analysis of hexagon microstrip patch sierpinski. When the antenna is excited, the waves generated within the dielectric undergo reflections and the energyis radiated from the edges of the metal patch,which is very low.
The center frequency will be approximately given by. As noted above, curved implementations can be made to conform to aircraft hulls. Application to patch antennas a fractal microstrip patch antenna is designed as the reference antenna, which is on a classical ground plane, as shown in figure 5a. As a flat antenna, arrays can have a large aperture, with corresponding high gain, but having low volume and weight. The combination of the rectangular microstrip patch antenna fabricated on the top of the substrate rogers ro3003 with electromagnetic band gap ebg structures at the ground plane is proposed to investigate the metamaterial characteristics in antenna design for satellite application. A microstrip patch antenna with bandwidth enhancement by means of artificial magnetic conductor amcelectromagnetic bandgap structure egb is presented. Their low profile design, often square or rectangular, allows them to be mounted to flat surfaces. In section 4, implementation of dgs in the ground plane is explained along with the. A microstrip patch antenna having reduced size is implementing by providing a substrate having on one surface a conductive fractal pattern, and having on the other surface a conductive pattern that may but need not also be a fractal pattern. This paper presents a miniature microstrip antenna at 915 mhz in the ism industrial scientific and medical band. The antenna design has been started using a probefed rectangular microstrip patch a 40 mm, b 24. Miniaturized microstrip patch antenna with spiral defected. Design and simulation of rectangular microstrip antenna. A multilayer microstrip patch antenna subarray design.
This rectangular microstrip patch antenna is designed for wireless communication application that works at 2. Pdf rectangular microstrip patch antenna with ebg structure. A novel design of broadband patch antenna is presented in this paper. The fundamentals of patch antenna design and performance. 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. Microstrip antennas can be designed as very thin planar printed. Microstrip antennas are becoming very widespread within the mobile phone market. The basic structure of the microstrip patch antenna is shown in.
Patch antennas are low cost, have a low profile and are easily fabricated. The basics of patch antennas, updated orban microwave. Microstrip patch antenna bandwidth enhancement using amc. Shows the geometry of the proposed equal slitted square shape micro strip patch antenna the equally edge slitted square patch antenna simulation results are.
Broadband design of circularly polarized microstrip patch. The radiation pattern of microstrip or patch antenna is. 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 most common type of microstrip antenna is the patch antenna. Design of slotted microstrip antenna for wimax applications microstrip. Dimensions of a microstrip patch antenna depend on the resonant. The electrical characteristics of the embedded structure are evaluated using mom simulations. This paper presents a rectangular microstrip patch antenna with ebg structure. Design of a rectangular patch antenna linkedin slideshare. Rectangular microstrip patch antenna with square shaped ebg structure in ground plane resonating at 7. The parameters evaluated were gain, beamwidth and return loss. The patch is generally made of conducting material such as copper or gold and can take any possible shape. In the present paper a detailed study of a new compacted hexagon microstrip patch antenna using fractal ground plane and shorting pin is presented.
Design and improvement of microstrip patch antenna. To reduce the design cycle time, commercially available cad software packages are utilized. 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. A dual band antenna and a microstrip fed patch antenna, used in the communication lab. Design of square split ring resonator shaped metamaterial. 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. Effects of ground plane size on a square microstrip patch antenna. The antenna design consists of a single l yer f th ckne 1. Analysis and design of circular microstrip patch antenna at 5. Design of a rectangular microstrip patch antenna using. This paper presents the design and simulation of rectangular microstrip antenna rmsa arrays for improved gain performance over the single element rectangular microstrip antenna.
The return loss and the various gain plots have been studied along with the radiation patterns. In order to design a compact microstrip patch antenna, a substrate with a higher dielectric constant antenna dimensions and antenna performance. The proposed configuration of the antenna is shown in figure 1. Keywords cadfeko, defected ground structure dgs, reflection coefficient, rectagular microstrip. Development of electromagnetic band gap structures in the. The design procedure started with the design of a single element rmsa. This paper presents a broadband circularly polarized patch antenna using an artificial ground ag structure with rectangular unit cells as a reflector. Consider the microstrip antenna shown in figure 1, fed by a microstrip transmission line.
Rectangular microstrip patch antenna with ebg structure. The manufactured prototypes are characterized in terms of return loss, gain, and radiation pattern measurements in an anechoic chamber. The frequency of operation of the patch antenna of figure 1 is determined by the length l. Substrate,microstrip patch antenna, ground plane, air box and virtual radiation box.
Many types of microstrip antennas have been evolved which are variations of the basic structure. The unique property of the microstrip patch antenna is its twodimensional structure. It also has a wide angle of beam in its radiation pattern. This microstrip antenna is designed for rfid tag system, using the dgs defected ground structure and the slots technique, on fr4 substrate. Design of planar microstrip patch antenna for gps applications the ever. Hence a tradeoff must be realized harmonics reduction with defected groundbetween the antenna performance and antenna structure for a microstrip patch antenna, ieeedimensions antennas and wireless propagation letters, vol. The coordinate axis is taken at the center of the patch or substrate. P, india abstract here we made an attempt to maximize the gain of microstrip patch antenna. Through these sources, i gained a basic knowledge of microstrip patch antenna design, which is basically creating a directional antenna structure using printed circuit board pcb material. However, the structure of such antennas has remained comparatively simple due to the limitations of antenna design technology. Pdf design and analysis of microstrip patch antenna for. Design a microstrip antenna array with circular polarization with feko software. The fractal patch is printed on a dielectric substrate with a relative permittivity of 2.
Additional benefits of patch antennas is that they are easily fabricated making them cost effective. The patch antenna, microstrip transmission line and ground plane are made of high conductivity metal. The dimensions of a patch are smaller as compared to the substrate and ground. Novel design of microstrip antenna with improved bandwidth. Microstrip antennas have high q q 100 is common, which means that they have small bandwidths. Download scientific diagram structure of microstrip patch antenna from publication. The proposed antenna structure is simulated, fabricated, and tested for obtaining the. 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. Generally, patch antenna has a shape of rectangle, and it can be feed with copper cable or microstrip line in our case. Design of a rectangular microstrip antenna using ebg. Microstrip patch antenna using cst microwave studio. Microstrip antenna design with defected ground structure.
Design and analysis of microstrip patch antenna arrays. To apply as a ground plane, reflection phase characteristics are tested whilst transmission band gap is determined by the suspended microstrip line method to. The structure includes a support member having an isolating recess in which an electromagnetically coupled patch pair of antenna elements is positioned, the upper element being substantially flush with the surface of the support member surrounding the. The fractal geometry used here is sierpinski carpets method. 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. Fig 1 basic structure of microstrip patch antenna so many advantages and applications can be mentioned for microstrip patch antennas over conventional antennas. The antenna is designed to work on taconic rf30 having thickness of 0. By properly combining the transmitted wave from the antenna and the reflected wave from the ag structure, broadband. Bimal garg, rahul dev verma, ankit samadhiya department of electronics engineering, madhav institute of technology and science, gwalior, india email. A microstrip patch antenna consists of a radiating patch on one side of a dielectric substrate which has a ground plane on the other side. Fig 6 design of single patch antenna in hfss simulation results the 2x2 patch array antenna is simulated using ansoft hfss. Antennas using patches as constitutive elements in an array are also possible.
It consists of area of metallization supported above a ground plane by a thin dielectric substrate and fed against the ground at an appropriate location. Microstrip patch antennas or simply patch antenna are increasingly useful because the antenna is printed directly onto a circuit board. Flexible and miniaturized design of microstrip patch. The results obtain that microstrip patch antenna can be used as client antenna in computer and workable antenna for wireless fidelity. Microstrip patch antenna with defected microstrip structure g 1. In the drawing above, blue area is the substrate and brown area represents the top conducting layer which is half of the antenna.
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