This video is a simple introduction which is about how to draw shapes and how to use software. Design and simulation microstrip patch antenna using cst microwave studio. How to find impedance at edge of a microstrip patch in cst. The imaginary component of complex permittivity is df dissipation factor. Narrow bandwidth bw is the main defect of microstrip patch antenna in wireless communication. Additional benefits of patch antennas is that they are easily fabricated making them cost effective. For wideband patch antenna design on new cst 2017 version, please watch this. At the two rf ports an impedance transformer matches the 50. The overall design steps for designing the patch antenna in cst microwave studio involves 1. A tripleband microstrip antenna using a 18 annular sector patch with slots and vias is presented in this letter. Patch antenna design using microwave studio 1 what is cst. Microstrip patch antennas or simply patch antenna are increasingly useful because the antenna is printed directly onto a circuit board. How can we choose the boundaries conditions in cst.
Passive patch antenna application note impact of surrounding components performance of patch antennas is affected by proximity of adjacent components, housing, display, etc. Ceramic surface mount dielectric antennas are the smallest types of antennas available, because they are printed on a highdkceramic slab, which makes the electric field concentrated allowing the antenna to be made small while keeping a high resonant frequency. The feed type and feed position of a patch antenna vary the input impedance. This thesis presents microstrip patch antenna ieee 802. Design and simulation of 1ghz simple dipole antenna using cst. Generally, patch antenna has a shape of rectangle, and it can be feed with copper cable. Single element microstrip patch antenna the microstrip patch antenna is a single layer design which consists generally of four parts patch, ground plane, substrate, and the feeding part. Simulation of antenna in cst microwave modeling antennas.
Introduction to antenna and nearfield simulation in. Simulation of a body above antenna copy e and h planes radiation patterns. A quadpolarization and frequency reconfigurable square. Is there any specific rules for giving waveguide port in. Design and development of planar antennas and dielectric devices. I want to design a patch antenna b y using cst software but i am facing a problem. Calculation of the dimension of the patch antenna, substrate, ground plane, effective dielectric constant, impedance etc. Cst input impedance of a patch antenna inset fed with.
Newest microstrip questions electrical engineering. Mavridis research, the miniaturized meander microstrip patch antenna was designed. Printedcircuitboard pcb antennas enable a wide range of wireless communications. For this example, a simple square patch antenna was used and was created directly in cst studio suite. This chapter considers the numerical analysis of planar antennas. Discrete port gave me a dual frequency microstrip antenna between 1 and 3 ghz, but. I know i am fairly new to antenna design this is the second one ive designed and the first one at 2. Design and analysis of 28ghz rectangular microstrip patch. Cst input impedance of a patch antenna inset fed with microstrip. The bandwidth can be improved by increasing the substrate thickness, and using air as substrate with low dielectric constant. Cst studio suite 3d em simulation and analysis software.
What is the difference between a waveguide port excitation. The patch is created on a doublelayered substrate with an air gap and is placed inside an abs box. Design and simulation of 1ghz dipole antenna using the optimizer tool offered by cst mws to get the right frequency conception et simulation dune antenne dipole simple en utilisant le. Microstrip antennas are becoming very widespread within the mobile phone market. Uwb antenna on pcb modeling antennas wifi antennas. A microstrip is a transmission line fabricated on a printed circuit board pcb. An antenna can be as simple as a retangular patch above a ground plane or as elegant as a complex array of patches, customized for a specific radiation pattern.
Cst studio suite used to design microstrip patch array. Vsim for electromagnetics vsimem is a flexible, multiplatform, highperformance, parallel software tool for electromagnetic simulations. The feed line has to be of suitable width so as to match the antenna impedance with the port. A practical guide to 3d electromagnetic software tools intechopen. The proposed antenna is built on a single 18 circle ring sector radiating patch. Without a reasonable impedance match, the antenna will not radiate much, if any, power. Do i get the same s11 results using discrete port and. Their low profile design, often square or rectangular, allows them to be mounted to flat surfaces. The following figure1 shows the gain pattern of the antenna in the farfield. Fdtd, which is employed for example by csts time domain. On the other hand, if you are using discrete port, you can use open add. Dk is a very important property for microwave pcb design.
How can i clear this error staircasing failed for discrete face port 1. Simulations with discrete face port usually provide the z11 matrix which is the impedance seen from the port location towards patch, and in this case, its the edge impedance of a rectangular patch. First find out antenna specification and substrate material you can take help of some online tool also 2. You can design linear 2x1 and planar 2x2 antenna array using below step. Optimally, you would like the input impedance of the antenna to match the source o. Consider the microstrip antenna shown in figure 1, fed by a microstrip transmission line. It provides excellent performance, but projects above the pcb. I think in theory, both must have the same s11 results, but in my simulation i cant get the same results. Interpolation was used to convert the discrete array of elements. Join the facebook group and discuss your problems with others. Analysis of 60 ghz flipchipped package using em toolbased.
Design and simulation microstrip patch antenna using cst. Pcb with cst studio to get some knowledge about the line impedance of a pcb. Introduction to antenna and nearfield simulation in cst. Training 12 full days cst cable studio cst pcb studio training on demand. What is the difference between a waveguide port excitation and a plane wave excitation in cst.
Inputting the parameter obtained into the cst microwave studio, draw the substrate, ground plane, patch antenna, gap between. These surrounding components influence the center frequency of the antenna, as well as, cause variation in the radiation pattern. Pcb trace topology for wideband matching network between transceiver and antenna. Antenna designs for mimo systems oregon state university.
Materials used in pcb technology generally have dk from 2 to 10 dk is dimensionless. Patch antennas are low cost, have a low profile and are easily fabricated. Vsimem uses secondorder accuracy algorithms for simulating curved geometric structures. The result i got is good but the antenna is very selective and i havent been able to increase the bw. The patch antenna, microstrip transmission line and ground plane are made of high conductivity metal. Patch antenna can be classifie d as single element resonant antenna. The direction of the maximum gain of the antenna is above the patch ie, in the direction of theta, while minor lobes are on. Antenna engineering, peter knott tutorial patch antenna design. Chapter 4 consists of a short introduction to cst microwave studio software. It consists of a square patch of side a printed on rt duroid substrate of.
Introduction to antenna and nearfield simulation in cst microwave. How to find exact feeding position in a microstrip patch. How to design rectangular microstrip patch antenna 21 and. A patch antenna, which is also known as a micro strip antenna, can be fabricated with standard printed wiring board pcb processes using highfrequency laminate materials. This video shows how to make a differential port in cst microwave studio.
718 1487 1563 402 1446 1028 1078 1018 150 450 1167 949 1494 323 1160 67 1412 718 914 657 1337 8 1065 765 1463 1106 278 877 501 1062 1074 282 1067