Dec 17, 2009 the antenna exhibits the return loss s11 below 10 db for the frequency range mentioned. Abstract in this paper, an inset feed patch antenna is designed for s band frequency range with operating frequency of 3ghz. How to find exact feeding position in a microstrip patch. How can one design bottom feed microstrip antenna using cst. Through simulation by cst microwave studio and theoretical computation, the axial ratio 3db bandwidth of two feeds can achieve 42. Design of inset feed patch antenna for s band applications. Feeding methods of microstrip antenna in antenna and wave propagation by. Inputting the parameter obtained into the cst microwave studio, draw the substrate, ground plane, patch antenna, gap between the. Pdf design and simulation microstrip patch antenna using cst. If you feed it at the edge you see an open circuit, because you are a halfwave from another open. This video shows how to create feeding pin in patch antenna. For optimal performance of an antenna array, the spatial distribution of the elements as well as phases and magnitudes at each element need to be tuned. Simulation results using cst studio showed that high gain 54 % increment and efficiency is increased to 97% have been achieved by the proposed antenna module ms and fss.
Quadband duallayer microstrip antenna design for mobile. Design of microstrip antenna in cst microwave studio. Jul 23, 2016 in this paper, a comparative study between inset feed, coaxial feed, aperture feed and proximity feed of a rectangular microstrip patch antenna is done on the basis of s11 parameter, vswr, directivity, beamwidth, bandwidth and radiation pattern. Microstrip patch antenna with coaxial feed using cst mws part 1. Readers can visit the first part or the third part below. Axial ratio bandwidth of a circularly polarized microstrip. Because the free student version of cst suite has limitations there initially was some concern if the modelled results could be realised in practice. Microstrip patch antenna design with cst studio 1050 mhz. The designed antenna is simulated by using cst studio suite. The proposed dimensions of the microstrip patch antenna is x mm. Microstrip square patch antenna using cst by shamsur rahman akash. A schematic diagram of patch antenna with 169 feed points of coaxial feeding probe.
The antenna is designed by using alumina having dielectric constant. This is the second part of the inset fed patch antenna design tutorial using cst microwave studio. The main goal of this paper is design a compact microstrip antenna module microstrip patch and fss structure. 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. The dielectric constant that controls the resonance of the antenna. Microstrip patch antenna design for ku band application. The advantage of the coupled feed is that it adds an extra degree of freedom to the design.
The gain of the designed patch antenna is significantly improved along with several other parameters like bandwidth and vswr. How can one design bottom feed microstrip antenna using cst microwave studio. Emphasis has been given on the optimization of the antenna structure at 1. Study the various feeding techniques of microstrip antenna using design and simulation using cst microwave studio. The simulation results with ground patch, lgnd of34mm is carried out and this is followed by the parametric study on the height ofthe ground patch and width ofthe feed microstrip line. Design of ultra wideband slotted microstrip patch antenna. Analysis of micro strip patch antenna using coaxial feed. Microstrip patch antenna with coaxial feeding using cst simulator arabic duration. Microstrip square patch antenna using cst by shamsur rahman. The feed type and feed position of a patch antenna vary the input impedance. The antenna exhibits the return loss s11 below 10 db for the frequency range mentioned.
Electromagnetic field solvers for applications across the em spectrum are contained within a single user interface in cst studio suite. Metamaterial based rectangular microstrip patch antenna improves the bandwidth and return loss in significant way. The width of the microstrip patch antenna is given in equation 1. Is there any specific rules for giving waveguide port in. Computer simulation technology cst microwave studio simulator is exploited to analyze the performance of the antenna system the results show the obtained return loss is 18 db, 31 db, gain 5. Cst studio suite is a highperformance 3d em analysis software package for designing, analyzing and optimizing electromagnetic em components and systems. Microstrip square patch antenna using cst by shamsur. Eshail2 oscar 100 dual band patch antenna uhfsatcom. Dec 03, 2016 this paper presents the design and simulation of a compact rectangular slot patch antenna for dual frequency operation at 2. Due to the rapid acceleration and evolution of the wireless communication and their equipment, integrating more services in the personal devices, personal digital assistance pda devices has to work in multiband frequencies.
The inset feed can also be stopped just before the patch antenna, as shown in figure 4. Designed and simulated by cst computer simulation technology. Patch antenna design tutorial with cst microwave electronic2017. Hi guys, i am trying to feed a microstrip patch antenna with a coaxial probe feed. Additional benefits of patch antennas is that they are easily fabricated making them cost effective. A monthly journal of computer science and information technology issn 2320088x ijcsmc, vol. For this example, a simple square patch antenna was used and was created directly in cst studio suite. By introducing a circular slot at the center of the ground plane, enhanced characteristics of patch antenna can be achieved. Figure 3 shows the front view geometry and the designed structure of the designed microstrip patch antenna with single band operation for the wlan band on the cst microwave studio software. Mar 17, 2017 this video explains the use of cst for rf application to design patch antenna. In engineering, choosing the most feed points according to the feed network space limited in the project can improve the axial ratio bandwidth of a circularly polarized microstrip.
Slot loaded square microstrip patch antenna for dual band operation. Antenna magus is a software tool for the acceleration of the antenna design and modeling process. Selecting best feeding technique of a rectangular patch. Microstrip patch antennas or simply patch antenna are increasingly useful because the antenna is printed directly onto a circuit board. The first step of designing the array is to design the individual element. 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. Computer simulation technology cst microwave studio simulator is exploited to analyze the performance of the antenna system the results show the obtained return loss is.
Comparative study of different feeding techniques for. Cst studio suite 3d em simulation and analysis software. Comparative study on different feeding techniques of. This paper presents the design and simulation of a compact rectangular slot patch antenna for dual frequency operation at 2. In this part of the tutorial, we will use the dimension calculated in the first part to design the patch antenna in cst microwave studio. Cst microwave studio is a software package for the electromagnetic analysis and design, use to design the metamaterial based rectangular microstrip patch antenna. Microstrip antenna design with cst my antenna simulations. The overall design steps for designing the patch antenna in cst microwave studio involves 1. For modeled rectangular patch antenna, the signal excites through sma connector which is modeled based on simulation tools ofcst microwave studio. After finding the patch size the antenna feed line should be designed. This high directive probe feed antenna has only 30 mm. Design for each feeding technique is simulated and studied using the cst microwave studio software. Slot loaded square microstrip patch antenna for dual band. The image below shows two ways to feed the microstrip patch, on the left is a microstrip feed and on the right is a coax feed.
The design of the individual patch element, the arrangement and spacing of the array and the layout of the feed network are all factors that decide both the radiation pattern and sparameters of an array. Design of probe feed microstrip patch antenna in s band. Probe feed effect in polygonal patch antennas ieee xplore. A monthly journal of computer science and information. The proposed antenna is suggested to be used in a mobile phone handset that. Microstrip patch antennas are used for communication purposes especially in military and civil applications.
Slit loaded h shaped microstrip patch antenna for 2. Till now i m getting nothing although i have read the circular patch antenna tutorial provided in the help manual. Proposed antenna has geometrical structure as shown in figure 1. Microstrip patch antenna with coaxial feed using cst mws part 2. Calculation of the dimension of the patch antenna, substrate, ground plane, effective dielectric constant, impedance etc.
Optimally, you would like the input impedance of the antenna to match the source o. Microstrip patch antenna meets all requirements and various types of microstrip antennas have been designed for use in mobile communication systems. There are few basic things that must be known before designing an antenna in general such as. Uwb square microstrip patch antenna for cband applications. This is a tutorial series on microstrip patch antenna design with inset feed in cst microwave. Design and performance analysis of microstrip patch antenna. In this paper, a comparative study between inset feed, coaxial feed, aperture feed and proximity feed of a rectangular microstrip patch antenna is done on the basis of s11 parameter, vswr, directivity, beamwidth, bandwidth and radiation pattern. Effects of design antenna parameters such as the slot size, position and dimension, patch shape and feed width have been investigated to obtain a better s11 value. Design and analysis of microstrip patch antenna arrays. A tripleband microstrip antenna using a 18 annular sector patch with slots and vias is presented in this letter. The antenna is designed by using following equation 1to 8. The proposed antenna is built on a single 18 circle ring sector radiating patch. To design a microstrip patch antenna with the microstrip feed line insetfed work on for wifi 2.
What dielectric constant defines the half wavelength. This paper, presents an h shaped patch antenna fabricated on fr4 substrate, having a dielectric constant 4. There are a a lot of methods for analysis microstrip patch antenna. Analysis and simulation the hfss software has been used to create and simulate the design of patch antenna for the desired. In this paper, a comparative study between inset feed, microstrip feed and coaxial feed, on a rectangular microstrip patch antenna are done on the basis of sparameter, reflection gain, vswr and radiation pattern using hyperlynx 3d em software. In case of satellite communication circularly polarized radiation patterns are required and this can be realized using either square or circular patch with one or two feed points. Analysis of micro strip patch antenna using coaxial feed and. Study the various feeding techniques of microstrip antenna. In this paper a simple microstrip patch antenna is designed in cst microwave studio at a resonant frequency of 2. The patch is created on a doublelayered substrate with an air gap and is placed inside an abs box.
Compact rectangular slot patch antenna for dual frequency. In general microstrip patch antennas are also known as printed antennas. Their low profile design, often square or rectangular, allows them to be mounted to flat surfaces. The easiest way to design a microstrip patch antenna with cst studio for beginners. This software uses modules based on methods including fem.
Patch antenna design using cst studio coaxial feed using cst. The simulation of the designed antenna was done with the aid of computer simulation technology cst microwave studio version 12. The antenna is designed and simulated using cst studio suite. The radiation pattern of this combination is shown in figure 1. Design and performance analysis of microstrip patch. Aug 10, 2014 the feed type and feed position of a patch antenna vary the input impedance. Cst studio suite used to design microstrip patch array. Design and simulation microstrip patch antenna using cst. Also proper way to feed a radiator as per real time devices during. Antenna simulation models used in my researches and projects. In this paper, a quadband, duallayer microstrip antenna was proposed. The gap introduces a capacitance into the feed that can cancel out the inductance added by the probe feed.
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