If we assume othe average beamwidth of rhombic antenna as 10, then design an antenna system such that it will radiate maximum power over the. The example will illustrate both the simplicity and power of. In this approachinstead of modifying the antenna geometry a passive network attempts to equalize the impedance mismatch between the source and the antenna load. Microstrip patch antenna design santa clara university. Rectangular monopole antenna, printed circuit board, ansoft hfss i. I tried the design of monopole using both lump port and wave port. Design and simulation of planar monopole antenna for uwb.
As an example, consider a coaxial cable connected to a halfwave dipole antenna shown in figure 1. The scopes defined for this project are as follow understanding the antenna concept. I designed a hairpin monopole antenna on the hfss software for my minor project work and now for my major project work i was instructed by my mentors that i should fabricate an advancement of the. Hence, a rectangular shaped ground plane is designed and will be simulated using ansoft hfss. An inefficient antenna produces a smallamplitude em wave for the same feed power, and converts most of the power into heat. The characteristics specifications of yagiuda antenna such as radiation pattern, s11 return loss, impedance matching and gain are analyzed in this work. 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. This antenna is based on the planar rectangle monopole antenna. This is essentially your complex radiation resistance. Introduction in this tutorial, a dipole antenna will be constructed and analyzed using the hfss simulation software by ansoft. For very large arrays, the hfss simulation will need to include linked boundaries and a unit cell radiator. The parameters evaluated were gain, beamwidth and return loss. The objective is to provide a very thorough introduction to hfss as applied to antenna design, which may be followed stepbystep in hfss with the investment of only a few hours of time.
Generally people dont think of radiofrequency radiation in terms of discrete. Ansoft high frequency structure simulator tutorial the dipole antenna april 2004. Click the project fil e and select insert insert hfss design from the men u. This antenna has 140 mhz bandwidth, return loss at centre frequency has less than 16. Fabricate a single antenna to operate in microwave frequency range. Design appropriate impedance matching networks for those antennas. This thesis introduces a new technique of impedance matching using lumped circuits passive, lossless for electrically small nonresonant dipole monopole antennas. Comparison of different planar monopole uwb antenna using. Identify a workstation in our school or remote login portal with an installation andor license for running ansys hfss electromagnetic modeling. The performance and behavior of the antenna is analyzed using the results obtained from the simulation process. But illustrates sizes and importance of good antenna design why microstrip antennas.
The driving signal from the transmitter is applied, or for receiving antennas the output signal to the receiver is taken, between the lower end of the monopole and the ground plane. Introduction in this tutorial, a dipole antenna will be. Utilize commercial simulation software hfss for antenna performance analysis. Preparation before coming to the laboratory to perform this assignment, the students should prepare the following. Planar monopole antenna, ultra wide band, hfss, bandwidth. Hfss for the dipole antenna ansoft high frequency structure. The example will illustrate both the simplicity and power of hfss through construction and simulation of this antenna structure. Ansoft high frequency structure simulator hfss is used to simulate expected characteristics which are resonant frequency, bandwidth, vswr, and radiation pattern. Ansys hfss simulates 3d fullwave electromagnetic fields for. The ability of an antenna to focus electromagnetic energy is defined by its gain. In this tutorial, a dipole antenna will be constructed and analyzed using. This video demonstrates how to perform post processing on the dipole antenna in ansys hfss. A monopole antenna is a class of radio antenna consisting of a straight rodshaped conductor, often mounted perpendicularly over some type of conductive surface, called a ground plane.
Cable effects on measuring small planar uwb monopole. Getting started with hfss v9 for antenna design october, 2003 this getting started training material is intended for new users of hfss. Although this kind of loaded antenna will appear to be a quarterwave. The proposed antenna, which was designed and simulated using the fembased hfss, is based. Monopole above a pec a, and the equivalent source in free space b. In case of antennas these quantities include the radiation pattern of antennas. The antenna in figure 1 is a left handed helix antenna, because if you curl your fingers on your left hand around the helix your thumb would point up also, the waves emitted from this helix antenna are left hand circularly polarized. The next step is to learn some of the options for getting better performance for. A compact coplanar waveguide fed wideband monopole antenna. Design of a uwb planar monopole antenna for breast cancer. Objectives design several lengths of dipole antennas. Alwa ys create a persona l folder to store all hfss p rojects. Multiband monopole and microstrip patch antennas for gsm and dcs bands.
This paper presents a coplanar monopole antenna structure for the band from 900mhz9. The modern world depends upon antennas, from simple monopole whips to complicated arrays. Since last six years i have worked on numerous patch antenna designs and most of them were designed using fr4 substrate. Modelling, designing and simulating a monopole antenna in hfss. Hopefully, this tutorial raises the awareness of loss and efficiency issues with small antennas. Identify a workstation in our school or remote login portal with an installation andor license for running ansys hfss electromagnetic modeling software.
The impedance matching network will be placed between the 50. From the h fss menu select solution type and driven modal. Thesis broadband impedance matching of antenna radiators. The rectangular micro strip patch antenna is analyzed using high frequency structure simulator hfss v 11. Using image theory, the fields above the ground plane can be found by using the equivalent source antenna in free space as shown in figure 1b. Fig 6 design of single patch antenna in hfss simulation results the 2x2 patch array antenna is simulated using ansoft hfss. Once you create the loop in hfss, simply look at the real and imaginary z of the antenna. Simulation of bradband rectangular monopole antenna. Part i covers basic antenna theory including gain, directivity, dipole, monopole, and arrays. When it is moved to the slot center or open end of the inf antenna, the impedance. Pdf design of a small printed monopole antenna for. A guidance to design monopole 2d and 3d and microstrip patch antennas by using ansoft hfss, without experience.
Monopole antenna is a one half of a dipole antenna. A quarter wavelength monopole is one of the easiest antennas to model. You can even use a linked hfss simulation as the source. A compact coplanar waveguide fed wideband monopole. Design of broadband monopole microstrip antenna using. The following notes will provide a brief summary of goals.
The antennas have omnidirectional and stable radiation pattern. Generally people dont think of radiofrequency radiation in terms of discrete particles oscillating electrons and photons they typically use the wave model instead, as its much easier to use. Rectaangular microstrip patch antenna for wireless. The characteristic of the antenna can be improved by altering the figure of the radiation patch and the ground. The design is usually done using computer simulation. The beauty of this antenna is the use of single patch which make it easy to fabricate consequently cost of antenna becomes cheaper. Design a rhombic antenna to operate at 20mhz when the angle of elevation angle 10o. Design of broadband monopole microstrip antenna using rectangular slot. If the helix antenna was wound the other way, it would be a right handed helical antenna. The antennas will be fed by a balun balancedunbalanced transformer for balanced excitation. Using this technique it is feasible to provide a match to a thin monopole over a 4. This paper reports a new form monopole antenna composed of the sleeved coaxial feed attached to a planar monopole. Pdf microstrip antenna suffers from narrow bandwidth. Thus to design a compact uwb monopole antenna, the ground plane is usually the one to be minimized.
Comparison of different planar monopole uwb antenna using hfss ria kalra, sukhdeep kaur abstract since the release by the federal communications commission fcc of a bandwidth of 7. Wideband blade monopole antenna with sleeved coaxial feed. Thus in this tutorial, a dipole antenna will be constructed and analyzed using the hfss simulator. Due to the nature of this design we will use driven modal as the solution type. Design of printed rectangular monopole antenna using hfss duration. Hfss, cst microwave studio electromagnetic hardware. However, an inductor coil at the base of a monopole adds electrical length, so the physical length of the antenna can be shorter.
Em numerical modeling of a monopole home page for the georgia. We will examine the topic using the this tutorial looks at electrically small antennas, which have always been, and will. Pdf high frequency structure simulator hfss tutorial otman. For example, a uwb signal centered at 5 ghz typically extends across 4 ghz and 6 ghz. The antenna is capable of wideband operation with improved impedance and pattern bandwidth and requires. Simulation of hairpin monopole antenna using high frequency. Pdf yagiuda antenna for navigational aids using hfss. The parameters such as return loss, vswr and radiation pattern are taken. Microstrip patch antenna simulation setup for microstrip fed patch antenna. On the theoretical analysis of radiation pattern and. This laboratory experiment provides a handson tutorial for drafting an antenna simple monopole and simulating radiation in the ansys hfss modeling tool.
In this paper, a smallsize lowcost printed monopole antenna for ultra wideband operation is presented. The case of a monopole antenna of length l mounted above an infinite ground plane is shown in figure 1a. Small antennas basic principles of electrically small antennas by gary breed editorial director e. Instructor resources for antenna analysis and design with feko electromagnetic simulation software an instructor pack is available for instructors who have adopted the book for a course. In this tutorial, a dipole antenna will be constructed and analyzed using the hfss simulation software by ansoft. Pdf on jan 1, 2004, hussain alrizzo and others published simulations of dipole antenns using hfss find, read and cite all the research you need on researchgate. Pdf high frequency structure simulator hfss tutorial. The focus is on many of the various antennas that might be encountered in a wireless lan system. The proposed uhf band of yagiuda antenna has been designed by using ansys hfss tool for the application of navigational aids. The slot antenna can be considered as a loaded version of the inf antenna.
Basic understanding of the antenna we will model one of the most basic antennas so that we can simulate a load, and design a matching network. To request an instructor pack, please email email protected, including details of your institution and the course you are teaching. Antenna gain is expressed as a ra tio of the effective radiated output power pout to the input power pin the gain of an antenna is a measure of power transmitted relative. Hfss is used to provide a good guide for the antenna design before the actual prototype is manufactured. Vector network analyzer 8 talks and presentations presented a paper titled bandwidth enhancement of printed monopole antennas using magnetodielectric cover in ieee applied electro magnetic conference aemc, at iit guwahati, december 2015. Pdf monopole antenna simulation in hfss find, read and cite all the research you need on researchgate. Clarify measurements of reflection coefficient of the antenna and its radiation pattern. Ee2032 simulation of a 4 monopole in ansys hfss short introduction to ansys hfss ansys hfss is a software package to. Chapter 3, 2nd edition, publishing house of electronics industry, beijing, 2243.
Comparison of different planar monopole uwb antenna using hfss. When the feed point is moved to the shortcircuited end of the slot or inf antenna, the impedance decreases. Designing a planar monopole antenna with a small ground plane to cover the uwb is not a difficult task and can be achieved through different techniques 17. Hfss tutorial modelling a patch antenna, how to generate radiation pattern of antenna arrays in matlab, antenna diversity analysis for 800 mhz mimo matlab, pcb antenna design simulation and fabrication with matlab, hfss monopole antenna simulation, antennas and antenna arrays design and analysis with matlab, rflaboratorymanual. I have completed the preliminary stage up to my knowledge and i have some doubts about the measurements and report generation. An efficient resonant antenna 14 wavelength or longer produces a largeamplitude em wave for a given feed power, and produces little heat. Explain resonant and nonresonant modes of long wire antenna. The patch antenna is a good place to start for antenna fundamentals with more coming. An unbalanced transmission line coaxial cable connected to a dipole antenna. Their work is approved for submission in partial fulfillment of the requirements for the degree of bachelor of technology. Starting hfss follow instructions from the hfss stripline laboratory tutorial for any pop ups that may occur. The simulation results with hfss software prove that the.
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