Modern uwb antennas and equipment where cc and cd are expressed in terms of line width w, substrate thickness d, and relative permittivity. In this paper, a compact microstrip patch antenna is designed having a partial ground plane with symmetrical parasitical elements, an extended. A patch antenna is a lowprofile directional radio antenna that is used for indoor locations covering singlefloor offices, stores and small studios. Applications include gps, usaf sgls, nasa sn including.
Design and simulation microstrip patch antenna using cst. I need to find the minimum level that the s1,1 db can be reached, but when i use the minoperator in the optimizer,it means. Microstrip square patch antenna using cst by shamsur. The most common version of printed antenna is microstrip antenna, which consists of a metallic patch above a ground plane. Touhami, and tajeddin elhamadi abstractthe miniaturization of the patch antenna has become an important issue in reducing the volume of entire communication system. The early years of the microstrip technology and microstrip antennas are analyzed. One plate is larger than the other, which is called ground plane and. Therefore, microstrip patch antenna has become a major focus to the researchers in the field of antenna engineering. It also has a wide angle of beam in its radiation pattern.
The waves from the patch start getting radiated from the width side. In the modern days the development in communication systems engineering requires the development of low profile antennas that are capable of maintaining high performance over a wide spectrum of frequencies. The proposed antenna is suitable for specific applications, such as security and military systems, which require a narrow bandwidth and a small antenna size. Different substrates use in microstrip patch antenna a survey kiran jain1,keshav gupta2 1, 2 school of computing science and engineering, galgotias university, greater noidaup, india abstract. To determine the width w, the microstrip patch antenna calculator was used to provide an initial. Microstrip patch antenna design for ku band application. The length of microstrip patch antenna is given by the following equations. Design of square patch antenna with a notch on fr4 substrate. A new microstrip fed triangular patch antenna for rfid applications with u slots has been presented in this paper. Properties of a basic microstrip patch a microstrip or patch antenna is a lowprofile antenna that has a number of advantages over other antennas. 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.
Wf and lf are the dimension of the microstrip line. 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. How can i improve the gain of a patch antenna and what is the. Pdf the study of microstrip patch antennas has made great progress in recent years.
The frequency of operation of the patch antenna of figure 1 is determined by the length l. Basically microstrip element consists of an area of metallization support above the ground plane, named as microstrip patch. Improvement of efficiency parameter of a microstrip patch. These types of antennas can be operated at high frequencies. How to find substrate dimensions for microstrip patch antenna. In this case, each vector starts at the origin and lies along the specified points on the x, y, and zaxes. It is mounted on a small, rectangular, flat surface and consists of two metallic plates placed upon each other. The overall design steps for designing the patch antenna in cst microwave studio involves. Design of microstrip antenna in cst microwave studio. This technological trend has focused much effort on the basic concepts.
Trends in research on microstrip antennas intechopen. Click here to go to our page on circular patch antennas new for september 2018. Optimization of sparameters of microstrip patch antenna. 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. A microstrip patch antenna is a metallic strip or patch mounted on a dielectric layer substrate. Their low profile design, often square or rectangular, allows them to be mounted to flat surfaces. Design and performance evaluation of microstrip antenna. The patch may be in a variety of shapes, but rectangular and circular are the most common. If the ratio lw is close to unity, the radiation pattern will be symmetric but may not provide a resonable input impedance. There are few basic things that must be known before designing an antenna in general such as. Design of a rectangular microstrip patch antenna using inset. In general, the ground plane size effects have to be considered with care. A triangular patch antenna for uhf band with microstrip.
Minimizing the sparameter data means that the optimizer tries to find a parameter setting where the. Deschamps in 1953, but didnt become practical until the 1970s when it was developed further by researchers such as robert e. The idea of microstrip patch antennas arose from utilizing printed circuit technology not only for the circuit components and transmission lines but also for the radiating elements of an electronic system. This rectangular microstrip patch antenna is designed for wireless communication application that works at 2. 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. Gain enhancement of a microstrip patch antenna using a. The proposed antenna was designed and simulated with ie3d simulator which has resonant frequency of 0. We take care of this by adding an electrical distance. Thus, patch 2 is not electrically connected to feed 2 or ground. A metal patch mounted at a ground level with a dielectric material inbetween constitutes a micro strip or patch antenna. The optimizer tries to minimize the sparameter data.
Design of rectangular microstrip patch antenna rmpa using stepped cut at four corners for broadbandmultiband application is presented in this paper. Due to its planar configuration and ease of integration with microstrip technology, the microstrip patch antenna has been heavily studied and is often used as elements for an array. Improvement in parameters of patch antenna by using a. The microstrip rectangular structure as shown in fig.
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. In this work, a rectangular microstrip patch antenna loaded with spiral shaped. The most common type of microstrip antenna is the patch antenna. Also called patch antennas one of the most useful antennas at microwave frequencies f 1 ghz. But illustrates sizes and importance of good antenna design why microstrip antennas. The microstrip patch antenna is used in a wide range of applications since it is easy to design and fabricate. Javed hossain, designing a high bandwidth patch antenna and comparison within the former patch antennas, canadian journal on. The microstrip patch antenna model used for the numerical simulation in ansoft hfss is shown in fig. Microstrip antennas find many applications as they are low profile.
P, india abstract here we made an attempt to maximize the gain of microstrip patch antenna. Rectangular microstrip patch antenna for wireless communications at 6. Microstrip patch antennas or simply patch antenna are increasingly useful because the antenna is printed directly onto a circuit board. Design of rectangular microstrip patch antenna ieee. Design of microstrip patch antenna using defected ground. Threeelement vectors of cartesian coordinates in meters. Microstrip patch antennas are well suited for rfid reader systems due to their versatility, conformability, low cost and low sensitivity to manufacturing tolerances. Microstrip patch antenna designed using cst microwave studio the antenna is being excited with the coaxial feed point located at distance dx and dy from the centre of the patch. In contrast, when feed 1 is off and feed 2 and the shorting. Microstrip patch antenna design santa clara university. In this paper, we are designing a rectangular shaped patch antenna. The size of the antenna is usually designed such that the antenna resonates at the operating frequency, producing a real input impedance.
Microstrip patch antenna array design to improve better gains. A low profile, unidirectional, dual layer, and narrow bandwidth microstrip patch antenna is designed to resonate at 2. Microstrip or patch antennas are becoming increasingly useful because they can be printed directly onto a circuit board. Dual ushape microstrip patch antenna design for wimax applications. Patch antenna with a quarterwavelength matching section. Many recent patch antenna efforts have been focused on demonstrating broadband properties capable of highspeed data transfer. Here we discussed different dielectric substrate frequently used in microstrip patch antenna to enhance overall efficiency of antenna. As there is currently an urgent need for graduate students and practicing engineers to gain an in. Microstrip square patch antenna using cst by shamsur rahman akash duration. An individual microstrip antenna consists of a patch of metal foil of various shapes a patch antenna on the surface of a pcb printed circuit board, with a metal foil ground plane on the other side of the board. Microstrip patch antennas kai fong lee, kwai man luk.
Design and simulation of modified rectangular microstrip patch antenna are done. Rfid system generally uses frequencies between 30 hz and 5. Dec 04, 2012 uhf patch antennas for space antenna development corporation, inc. Feb 16, 2017 microstrip patch antenna with coaxial feed using cst mws part 1 duration. The basics of patch antennas, updated orban microwave. This work is mainly focused on increasing the gain as well as reducing the size of the unidirectional patch. It usually consists of a metal patch on top of a grounded dielectric substrate. A microstrip or patch antenna operates in a way that when current though a feed line reaches the strip of the antenna, then electromagnetic waves are generated. Microstrip patch antennas mpa are used in communication system due to its attractive features like low profile, light weight, conformable to any shape, simple and inexpensive to manufacture. In general microstrip patch antennas are also known as printed antennas. 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. Since patch 1 is fed by feed 1, and patch 2 is electromagnetically coupled to patch 1, the whole geometry becomes a stacked microstrip patch.
Microstrip patch antenna and shows electromagnetic nature, in some cases. The microstrip antenna produces maximum radiation in the broadside perpendicular to the substrate direction and ideally no radiation in the endfire along the surface of the substrate direction. Triple band microstrip patch antenna useful for wifi and wimax. Additional benefits of patch antennas is that they are easily fabricated making them cost effective. The microstrip antenna can be fabricated with low cost lithographic technique or by monolithic. Abstract due to the existence of growth in development of low cost, less weight, highly reliable, minimal profile antennas for wireless. Design of a rectangular microstrip patch antenna using. Characteristics of the rectangular patch antenna microstrip patch. It is a popular printed resonant antenna for narrowband microwave wireless links that require semihemispherical coverage. These antennas are capable of supporting high data rates to at least 10 watts of transmittedpower.
Siddaiah procedia computer science 85 2016 401 a 409 fig. As there is currently an urgent need for graduate students and practicing engineers to gain an indepth understanding of this subject, this book was. The center frequency will be approximately given by. Rectaangular microstrip patch antenna for wireless. The basic geometry of a microstrip patch antenna mpa consists of a metallic.
The dimensions calculated earlier and information obtained from the manufacturer is listed belowparameters. How to design microstrip patch antenna array using cst youtube. At frequencies lower than microwave, microstrip patches dont. Analysis and design of circular microstrip patch antenna at 5.
Microstrip patch antennas research papers academia. In this work, the simulation tool of ie3d is used to study the performance and gain of the rectangular microstrip patch antenna. Microstrip square patch antenna using cst by shamsur rahman akash shamsur rahman akash. A metal patch mounted on a ground level with a dielectric material inbetween constitutes a microstrip or patch antenna. Pattern analysis of the rectangular microstrip patch antenna diva. Book topics include discussion of arrays, spectral domain, high tc superconducting microstrip antennas, optimization, multiband, dual and circular polarization, microstrip to waveguide transitions, and improving bandwidth and resonance frequency. Microstrip antennas are becoming very widespread within the mobile phone market.
The progress in modern tiny multifunctional wireless devices has dramatically increased the demand for microstrip antennas in recent years. To design a microstrip patch antenna with the microstrip feed line insetfed work on for wifi 2. The shape and size of patch determine the frequency of operation of the antenna and its performance. Gain enhancement in microstrip patch antennas by replacing. The antenna engineer may face the situation of needing to design patch radiators above the composite material instead of a conductor ground plane. The proposed rectangular patch antenna has been devise using glass epoxy substrate fr4 with dielectric constant. View microstrip patch antennas research papers on academia.
A variant of the patch antenna commonly used in mobile phones is the shorted patch antenna, or planar invertedf antenna pifa. And measure the antenna parameters like return loss and radiation pattern. Uhf patch antennas for space antenna development corporation, inc. The goal is to match the input impedance zin to the transmission line z0. The microstrip patch antenna is a popular printed resonant antenna for narrowband microwave wireless links that require semihemispherical coverage. A reconfigurable stacked microstrip patch antenna for. Microstrip antenna an overview sciencedirect topics. The feed mechanism is very important here in these types of antennas and should be taken care of. The reflection coefficient is less than 10db for a frequency range of 3. This is a tutorial series on microstrip patch antenna design with inset feed in cst microwave. But as the thickness of the strip is extremely small thus the waves that are produced within the substrate get. 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. Antenna designing using cst computer simulation technology this video explains the use of cst for rf application to design patch antenna.
Isbn 9789535110194, pdf isbn 9789535163145, published 20306. Microstrip antenna design with cst my antenna simulations. The frequency range in which the antenna is planed to be be propagating, the size of the antenna, the material, the gain of the antenna and the structure of the antenna. Microstrip patch antenna for rfid applications request pdf. Pdf wideband microstrip patch antenna design for breast. Department of computer science and telecommunication engineering in one of the four founding departments of noakhali science and technology university.
Most microstrip antennas consist of multiple patches in a twodimensional array. The size of a microstrip antenna is inversely proportional to its frequency. In the case of a microstrip linefed antenna, where the source and the transmission line. The radiation pattern of microstrip or patch antenna is. Furthermore, in the last few years, such microstrip antennas found numerous applications in both the military and the commercial sectors.
Special care has to be taken to avoid illuminating the eyes. Antennas using patches as constitutive elements in an array are also possible. 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. The results obtain that microstrip patch antenna can be used as client antenna in computer and workable antenna for wireless fidelity. The supporting element is called substrate material which is placed between the patch and the ground plane 1. A low profile allmetal mechanically robust circular microstrip patch antenna at sband frequencies is presented. The patch antennas are popular for low profile applications at frequencies above 100mhz. International journal of science, engineering and technology research 2. The single coaxial feed circularly polarized antenna was optimized for a 3unit.
Basically, the microstrip patch antenna consists of. Different substrates use in microstrip patch antennaa survey. The antenna is attractive due to its lowprofile conformal design, relatively low cost and very narrow bandwidth. The following image shows a microstrip or patch antenna.
The patchmicrostrip object is a microstrip patch antenna. The microstrip antenna has a planar geometry and it consists of a defected ground, a feed, a substrate, a patch and a defected ground structure. The above equation says that the microstrip antenna should have a length equal to one half of a wavelength within the dielectric substrate medium. These are very low size antennas having low radiation. Most often, microstrip antennas are made by etching the patch from a printed circuit board. 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. The book discusses basic and advanced concepts of microstrip antennas, including design procedure and recent applications. Pdf design and simulation microstrip patch antenna using. Stepped cut at four corner technique is used in order to increase the bandwidth and gain of the antenna. Geometry of microstrip patch antenna the width of the microstrip patch antenna was computed with the following equation. Antdevco employees have designed andmanufactured spacecraft microstrip patch antennas for many small spacecraft programs. Modified design of microstrip patch antenna for wimax. Patch antennas are low cost, have a low profile and are easily fabricated. The design with dgs has been analysed and the simulation using the cst microwave studio commercial software for wlan band at 5.
Genetic algorithm optimization for microstrip patch. The patch antenna is a good place to start for antenna fundamentals with more coming. To enhance the gain,the array of patch elements is used instead of single patch. 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.
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