These minima and maxima continuously change side like the phase of the rf signal. The conformal antenna design is simulated in cst microwave studio and is under fabrication. Simulations and tests shows that the antenna is circular polarized and have a. A quadpolarization and frequency reconfigurable square. The patch and ground plane are made of a high conductivity metal, copper and is of thickness t. The axial ratio of the antenna in the center frequency as well as in the antennas application range is presented in. Design of a multiband patch antenna for 5g communication systems. Development of microstrip patch antenna design for sband. How can we ensure about the polarization type in cst.
Cst studio suite 3d em simulation and analysis software. It seems that many other simulation tools such as nec,ie3d can do that. A transmit antenna needs a receiving antenna with the same polarization for optimum operation. Whenever planar antenna is conformed to cylindrical surface, antenna characteristics such as circular polarization gets disturbed. The large patch element comparing between the twos is made for the keeping in mind of the measurement of 2.
The simulated results are confirmed experimentally. The results of the simulation validated the initial. Circular polarization, aperture coupled, axial ratio ar, half power beam width hpbw. Design and analysis of polarization reconfigurable. This paper presents a compact new design of broadband microstrip antenna. The proposed antenna has a compact dimension of 30mm. The geometry of circulary polarized antenna is shown in figure 1. May 02, 2017 circular polarized cp antennas have many performance advantages over linearly polarized lp ones. Reconfigurable orthogonal polarizations were achieved by. A square patch antenna fed from one of its corners was designed to achieve two di. Design of circularlypolarized patch antennas using cst. Polarization controling approach in reconfigurable microstrip. Click here to go to our page on circular patch antennas new for september 2018. It was decided to design a patch antenna from the theoretical study since it fulfils all the requirements for the antenna.
Microstrip antenna has been used in every field, due to its many advantages. I am designing an rfid antenna in cst, which has four feed points coaxial cables. Dual resonant frequencies are obtained by inserting a slot in patch. Alternate feed methods a common variation in patch antenna design is the location and routing of the feed, to obtain a desired feedpoint impedance, to control the polarization, or for convenient layout. The aim of the paper is to design as tacked nearly square microstrip patch antenna design for s band 2 ghz to 4 ghz and study the effect of antenna dimensions length l, and substrate parameters relative dielectric constant. Circular polarization is achieved by energizing the patch. Design and simulation microstrip patch antenna using cst microwave studio slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The simulation result of the antenna exhibits wider bandwidth of 68. This paper presented a new circular polarization reconfigurable antenna for 5g wireless communications. Design of a multiband patch antenna for 5g communication.
And some technologies can achieve the miniaturization of the microstrip antenna xue and zhong. In theory, circular polarization of a patch antenna is realized by exciting two orthogonal components of identical amplitude. View notes design of circularlypolarized patch antennas using cst microwave studio 2 from econ 101 at arab open university, amman. Results and discussion according to the optimized results using cst studio suite, the parameters of the proposed antenna. Multiplefeed method can realize the circular polarization for a microstrip antenna. In the proposed paper, an attempt is made to design such an antenna by altering the size of square patch antenna proposed in, to achieve frequency reconfiguration in addition to quad polarization. Cst microwave studio softwareis used to simulate the antenna design. Circularly polarized omnidirectional antenna with dipole. The antenna, containing a semicircular slot, was compact in size and had a good axial ratio and frequency response.
Antenna simulation models used in my researches and projects. Multiband multiple elliptical microstrip patch antenna with. Characteristics goals of conventional rectangular patch antenna frequency of operation 4. Cst ag designing a phased array antenna using antenna magus and cst microwave studio 345 40 35 30 25 20 15 10 5 0. The design process included the electromagnetic modeling and simulation, i. A quadpolarization and frequency reconfigurable square ring.
At the present, i do not have any access to the pc that ran cst, so regrettably, i cannot help right now. The array network is used to combine the 2 element of single patch antennas. Feb 06, 2015 designing rectangular patch antenna the simulation of conventional antenna is designed for the purpose of comparison to dgs one two conventional mpa antennas were designed at 4. During the design, simulation was performed on the proposed structure in order to optimize some important parameters. Single feed dual band circularly polarized microstrip.
Accordingly it is expected that a wideband polarization recon. For the receiving antenna to have maximum power reception, it should have the same sense of pola. Electric surface current distribution on the eshaped patch antenna in state 3 during one time cycle. Therefore, lhcp could be generated at the resonant frequency. The antenna material uses pcb fr4 epoxy, in which there is a dielectric substrate with dielectric constant. To demonstrate our design method, all simulations are performed using cst microwave studio. I want to set the polarisation as circular lhcp for all feed points. Cst, microstrip patch antenna, radiation pattern, return loss, wlan. This section describes the antenna geometry and the design process.
Axial ratio bandwidth of a circularly polarized microstrip. The simulation of this antenna has been done by cst microwave studio. Generally, the value of return losses for matching of the patch antennas are acceptable over than a range of 10 db. The simulations are carried out in computer simulation technology cst microwave studio. Microstrip antenna can adopt many methods to obtain circular polarization xue and zhong, 2002. Analysis of the proposed structure is obtained by using cst microwave studio. Deschamps in 1953, but didnt become practical until the 1970s when it was developed further by researchers such as robert e.
Design of conformal aperture coupled microstrip patch antenna. Designing rectangular patch antenna the simulation of conventional antenna is designed for the purpose of comparison to dgs one two conventional mpa antennas were designed at 4. The antenna consists of a rectangular patch etched on a 60 mil thick fr4 substrate. Hybrid cosimulation using cst microwave studio cst mws and cst design studio cst ds were used to evaluate the antenna, including the spice model for the pin diodes and the effect of the biasing circuit. Sep 27, 2017 the antenna material uses pcb fr4 epoxy, in which there is a dielectric substrate with dielectric constant. Dual linearly polarized microstrip array antenna intechopen. Detailed analysis of each computed parameter follows. The basics of patch antennas, updated orban microwave. Specifically, in 2, a circular monopolar patch antenna with uslot patch and four slots achieved dualband 2.
Directivity calculated by means of simulations performed with cstmicrowave studio for the switch con. Antenna is capable to radiate lhcp and rhcp with the help of proper switching action and reconfigurable feedline. Just finish constructed a structure of an lprobe patch antenna from ieee paper and just run the simulation by transient time solver, the curve of the return losss11 against frequency that i get is different from what showing on the ieee paper. The antenna is designed and simulated using cst microwave studio 2015 software. Design of conformal aperture coupled microstrip patch.
A new polarizationreconfigurable antenna for 5g applications. Single feed dual band circularly polarized microstrip patch. The patch is of length l and width w and is etched on. How can we ensure about the polarization type in cst simulation. Consequently, we can design a highgain cp antenna using an fpc structure with a simple lp patch antenna.
The rectangular microstrip patch antenna is designed using computer simulation technology cst microwave studio which is a commercially available electromagnetic simulator. Two pin diode switches controlled the reconfiguration for both the righthand and lefthand circular polarization. Circularly polarized omnidirectional antenna with dipole core. How to design circular polarized patch antenna in 1. Polarization reconfigurable antenna design figure 1 shows the proposed structure and design parameters of the reconfigurable. The physical structure of the antenna is designed in such a way that only through the graphenes fermi energy level, righthand, lefthand circular polarization, and linear polarization can be obtained. May 11, 2018 with the help of cst microwave studio suite tm the proposed structure has been designed and analyzed. First, we briefly introduce the basic methods which can form the circular polarization for a microstrip antenna, including the singlefeed and the multiplefeed. Eshail2 oscar 100 dual band patch antenna uhfsatcom.
Bevelled corner aims to obtain circular polarization with axial ratio value less than 3 db. Using built single patch slant at 45 and 45 polarization. The objective of work is to design and develop polarization reconfigurable micro strip patch antenna which radiate electromagnetic wave of various orthogonal patterns. Application note cst ag designing a phased array antenna. How can i show the circular polarization in cst 2015. In this paper, the performance of graphene in patch antennas is investigated in order to control the antenna polarization. Design and analysis of polarization reconfigurable microstrip. Since the antenna is combined in three layers including squares and circles im not sure about the propagation polarization. I know i can study the surface currents for this but i wonder if there is an exact method specifically in cst. Jun 16, 2009 hi everybody, im new to cst microwave studio.
With the help of two feedline and 4 diodes antenna is capable to radiate vlp, hlp, lhcp, rhcp. Designed and simulated by cst computer simulation technology. Cst studio suite is a highperformance 3d em analysis software package for designing, analyzing and optimizing electromagnetic em components and systems. The smaller patch element comparing between the twos is made for the keeping in. A circularpolarization reconfigurable mengshaped patch antenna 4 top posters. Square microstrip patch antenna designed to have the corner cut off. In this tutorial, simulations of the circular antenna with frequency 2. In general, you would be driving the feed point of the patch antenna via connection to a transmission line of some kind. The patch mentioned yields horizontal polarizati on, as shown. Why is circular polarization better in a microstrip antenna. Koch fractalbased hexagonal patch antenna for circular. Electromagnetic field solvers for applications across the em spectrum are contained within a single user interface in cst studio suite. Our main research topic in this chapter was how to improve the axial ratio bandwidth of a circularly polarized microstrip antenna. I want to know if i can see the cross polarization of the antenna in the cst simulation.
A search for circular polarization and planar shows that using a dual feed with patch antenna produces the desired polarization. Design and simulation microstrip patch antenna using cst. The antenna height and tilt angle dipole were adjusted during the design process. The third design is to design and develop dual feed quadri polarization states microstrip patch antenna feeding with microstrip line. Microstrip patch antenna used to send onboard parameters of article to the ground while under operating conditions.
Introduction microstrip patch antenna mpa is used in conformal shapes due to its low profile. Polarization controling approach in reconfigurable. A circular patch antenna is taken as a base for designing the hexagonal patch as the shapes are in close relation to each other. Design of circular polarized dual band patch antenna. This polarization can be either vertical or horizontal depending on the orientation of the patch. The fundamentals of patch antenna design and performance. We adopt theoretical analysis and simulation by cst microwave studio to give out the method of improving the axial ratio bandwidth of the circularly polarized microstrip antenna.
1434 1208 137 1582 1010 473 227 269 1664 189 1047 1323 1591 838 201 443 217 1651 1024 1179 1390 1405 156 205 1207 651 357 877 1001 856 928 505