A microstripfed aperture coupled microstrip antenna was designed by rao et. Nasa uses feko to develop wireless sensors computational electromagnetic. Metallic modeling with solid and meshing between metal. The designed microstrip patch antenna using feko is shown in the figure 5. In this paper a sige bicmos seven metal layer backend process is used for fabricating a stripline fed onchip aperture. Comprehensive electromagnetic software watch this quick introduction video to learn how feko can help you. Metamaterialbased lowprofile broadband aperturecoupled. An introduction of aperture coupled microstrip slot antenna. Design of striplinefed dualpolarization aperturecoupled stacked microstrip patch phased array antenna for wideband application. Implementation of the shielded butterfly antenna in feko. Fast design and optimisation of onedimensional microstrip patch antenna arrays.
Hfsss microstrip patch antenna design part1basics of antenna design using hfss software duration. Pdf high gain, wideband aperture coupled microstrip antenna. Master of engineering in electrical and electronic engineering at. High gain fss aperture coupled microstrip patch antenna. An aperture coupled design is proposed for microstrip slot antenna to improve its radiation pattern as well as bandwidth. A variant of this antenna was implemented in feko for the. A dualband circularly polarized aperturecoupled stacked. Bhatti1 abstractthis paper presents a highgain cavity resonant antenna cra, consisting of an fss layer. A variety of design parameters can be optimized for improved bandwidth and impedance matching.
Hybrid method of analysis for aperturecoupled patch antenna array for mimo systems charles u. In order to combine feko s electromagnetic modeling power with matlabs signal processing capability, the required. Designing dielectric resonator antenna dra fed by aperture. Analysis of different structures of patch antennas. The first aperture coupled microstrip antenna was fabricated and tested by a graduate student, allen buck, on august 1, 1984, in the university of massachusetts antenna lab. Aperture coupled microstrip antenna design and analysis. It is based on coupling of an aperture between the patch antenna and microstrip slot line. The acmsa uses an aperture coupled line feed to excite a resonant patch element. One effective way to increase the impedance bandwidth is to change the patch shape, feed shape and the slot shape. Air gap aperture coupled stacked patch antenna for dualband rajesh kumar vishwakarma 1, sanjay tiwari 2 1department of ece, juet, raghogarh, guna 2school of studies in electronics, pt. The catholic university of america, washington, dc 20064, usa.
A square microstrip patch antenna of dimension l1 x l1 mm2 is fabricated on a fr4 epoxy substrate of dielectric constant. Design and optimization of aperture coupled microstrip. Tutorial on the use of feko to analyze a 50 ohm thru microstrip line. This thesis focuses on the aperture coupled patch antenna due to the lack of fabrication and tuning documentation. History of aperturecoupled microstrip patch antenna aperture coupled microstrip patch antennas have become a viable option for wireless and telecommunication systems over traditional microstrip patch antennas. Aperture coupling is an indirect method of feeding the patch. Feko archives page 9 of 11 altair hyperworks insider. A common antenna with regular square aperture coupled patch is also designed in this paper. Aperture coupled microstrip slot antenna altair hyperworks insider. If has been observed that the resonance frequency reduces by the increase of the height.
A shapedbeam seriesfed aperturecoupled stacked patch. Feko simulations the aperture coupled patch antennas that were designed and optimized in emp were then analyzed using feko. Altair feko is a comprehensive computational electromagnetics cem code used widely in the telecommunications, automobile, space and defense industries. Millimeterwave uwb antenna design in ltcc technology. Design of circular polarized dual band patch antenna. Transmissionline analysis of the aperture coupled patch antenna the single aperture coupled patch of figure 2 is analysed in this work by a transmissionline approach, in order to have a fast and efficient procedure for computing the parameters of the radiating patch. For more stepbystep examples, please consult the getting started guide.
Research and development in the 1980s contributed to the discovery of the aperturecoupled microstrip patch antenna 2. Analysis of different structures of patch antennas emu irep. Feko is used to model the patch with the method of moments 11. The basics of patch antennas, updated orban microwave. A variant of this antenna was implemented in feko for the following specifications. Aperture coupled microstrip antenna couples the patch antenna with microstripline through an aperture 1. This set of examples demonstrates the major features of feko. Reconfigurable patch that is resonant at four frequencies. As i understood, feko uses two different material modeling. Introduction 11 1 introduction this examples guide presents a set of simple examples which demonstrate most of the features of the code feko. Section 2 presents a design approach for aperture coupled rectangular patch antenna, section 3 gives a brief about genetic algorithm and the flowchart used, in section 4 simulation results are presented and finally in section 5 conclusion is drawn. Dualband circularly polarized aperture coupled microstrip antenna 1619 fig. Finite substrate microstrip line simulated with feko youtube. The first aperture coupled microstrip antenna was introduced in 1985 by d m pozar 4 figure1.
We are chosen to compare coaxial feed and microstrip line feed due to the advantage that it can be easily fabricated and simplicity in modelling as. Simulation results are presented in figures 2 and 3. Rectangular aperture coupled microstrip patch antenna. In 18, the authors designed a dualpolarized microstrip seriesfed linear travelingwave array consists of fourport aperture coupled cross patch elements and a twoport radiating matched load. Aperture coupled microstrip antenna design and analysis michael paul civerolo a linearlypolarized aperture coupled patch antenna design is characterized and optimized using hfss antenna simulation software 1. Proximity coupled patch antenna with microstrip feed a91 a9 proximity coupled patch antenna with microstrip feed keywords.
Feko simulation of a wedge mounted four element array antenna. Kai chang recent days, antennas play an important role in wireless communication system. By slotting the radiating patch, a periodic array of series capacitor loaded metamaterial patch cells is formed, and excited through the coupling aperture in a ground plane right underneath and parallel to the slot at the center of the patch. So, i need to make region as free space and apply metallic model for faces. After that, lots of works about the aperture coupled microstrip array antennas had been carried out with good array performances achieved 1720. Bandwidth optimization of aperturecoupled stacked patch. Your comments are highly appreciated about the issues of discrepancies between the books result and feko models and the effect of the feeds length. Introduction this article introduces the basic concepts of patch antennas. The gain of the antenna is nearly flat and higher than 9. Design and comparative study of pin feed and line feed. An example of how a proximity coupled circular patch antenna may be simulated with feko. The examples have been selected to illustrate the features without being unnecessarily complex or requiring excessive run times.
An offchip parasitic patch is fed by electromagnetic coupling through the aperture and is realized on a lcp substrate. A reconfigurable quadricpolarization diversity aperture coupled patch antenna, ieee aps trans. Chapter 2 bandwidth optimization of aperturecoupled stacked patch antenna marek bugaj and marian wnuk additional information is available at the end of the chapter. Novel aperturecoupled microstripline feed for circularly. Davidovitz 1 and alonsomonferer 2 independently analysed a circular microstrip patch antenna with proximity coupling. Hi there, i have contacted feko support before about modeling a. Design of a lowprofile ku band phased array antenna for mobile platforms. Also consult the feko website1 for more examples and models, speci. Zarreen, et al 4 in this paper, the aperture coupled microstrip antenna coupling mechanism depends on the feed line, patch, and shape of the aperture. Aperture coupled microstrip slot antenna couples the patch antenna with microstripline through an aperture. Aperture coupled microstrip patch antenna design with two layers provides more degree.
Design and comparative study of pin feed and line feed microstrip. The feed line creates an electric field in the aperture, which induces surface currents on the patch. Microstrip antenna or patch antenna basics in antenna and wave propagation by engineering funda duration. The feko model for the conventional design thinsubstrate patch antenna is shown in figure 3, where the ground plane dimensions were set to the asfabricated antenna dimensions, 4000 x 4000 mil, and the feed line. Design of aperture coupled microstrip patch antenna for wireless communication applications. An aperturecoupled patch antenna can have improved bw and we have used slotcoupled patches with stubterminated microstrip feed line to obtain bw 15%. Seriesfed aperturecoupled microstrip antennas and arrays by bojana zivanovic a dissertation submitted in partial fulfillment of the requirements for the degree of doctor of philosophy department of electrical engineering college of engineering university of south florida major professor. Geometry of the aperture coupled stacked patch microstrip gps antenna.
Modeling and analysis of a dualband dualpolarization radiator using feko. A metamaterialbased broadband lowprofile gridslotted patch antenna is presented. Comparative study of coaxial line feeding microstrip patch. Geometry of the antenna the geometry of the proposed antenna is shown in fig. Air gap aperture coupled stacked patch antenna for dualband. Designing an aperture coupled microstrip patch antenna in feko 0 dual polarized aperture coupled microstrip antenna hfss 0 part and inventory search. Coupling effects of aperture coupled microstrip antenna.
Among these four feeding my research in involved with the coaxial line feeding with advantages like to fabricate, easy to match and low spurious radiations. Hfss tutorial 2microstrip patch antenna with a cutting slot coaxial feed how to cut slot in patch duration. Feko simulation of a wedge mounted four element array. Design of aperture coupled microstrip patch antenna for. An exploded view of a single patch acmsa can be seen in figure 1. Seriesfed aperturecoupled microstrip antennas and arrays. Aperture coupled microstrip patch antenna for wifi, wimax. By changing the patch shape, impedance bandwidth can be increased. Design and fabrication of aperture coupled microstrip patch.
This idea was first proposed in 1985 as a bandwidth enhancement technique 3. Hybrid method of analysis for aperturecoupled patch. A9 proximity coupled patch antenna with microstrip feed. Design analysis microstrip patch antenna is designed using the feko. Nominal antenna circuit model parameters are determined. View the video nasa uses feko to develop wireless sensors computational electromagnetic software enables a small team of researchers at nasas langley research center to develop wireless resonant sensors that can measure and mitigate lightning strike damage to composite aircraft. Thesis presented in partial fulfilment of the requirements for the degree. If the height of the substrate is not given then it can be calculated using resonant frequency and the dielectric constant of the substrate. A simple feko simulation was constructed and compared with their results for the input impedance of the proximity coupled patch. Reconfigurable patch that is resonant at four frequencies randy l. We use a simple rectangular, half wave long, probefed patch operating in its fundamental mode as an example.