Sep 06, 2018 the antenna radiation pattern on y v plane is still non symmetric. Design of triple band microstrip patch antenna for wlan. A microstrip patch antenna is a metal patch placed on a substrate. Antenna placement on aircraft platforms with feko and antenna. Feko is a powerful and comprehensive 3d simulation package intended for the analysis of a wide rangeof electromagnetic radiation and scattering problems.
Introduction 1 introduction this examples guide presents a set of simple examples which demonstrate a selection of the fea tures of feko. For the particular resonate frequency the effective length of the patch is calculated by. Typical half wave patches have efficiencies well above 90%. Proposed antenna attains s 11 radiation characteristics. Tutorial on the use of feko to analyze a 50 ohm thru microstrip line. The patch antenna array consists of four elements with rectangular patch and uniform distribution.
Gagare department of electronics and communication engineering. Microstrip, patch, antenna, slit directivity of the antenna, electric far field. Simulate and analyze a rectangular patch antenna using ansys hfss, including return loss and 3d radiation fields. Fekos broad range of solver technologies makes it well suited to solve a range of different antenna types. Feko offers quite a few options for the simulation of this geometry. Feko includes a solution method based on the mom that can be used for rigorous analysis of windscreen antennas. Mar 26, 20 low dielectric constant substrates are generally preferred for maximum radiation. Desired patch antenna design is initially simulated by using high frequency simulation software sonnet and feko and patch antenna is designed as per requirements. Design and performance of microstrip patch antenna for.
Electromagnetic antenna for satellites wins student competition. Feko also offers tools that are tailored to solve more challenging em interactions, including dedicated solvers for characteristic mode analysis cma and bidirectional cables coupling. The main difficulty of the microstrip antenna is its narrow bandwidth. A wideband microstrip patch antenna for kuband applications. Radiation pattern of a planar array on finite circular. Antenna analysis and design using feko electromagnetic. Kawser abstract microstrip antennas are low in profile and light in weight and they are now developed for many applications. Oct 15, 2017 a twoport y patch antenna is modeled in feko to determine isolation between ports and radiation patterns of the antenna. Fekos electromagnetic simulation software student competition 2014 award goes to the design of a patch antenna array for beamforming combined with metamaterials at 5. We try to model and analyze one microstrip antenna with the help of feko.
Rectangular patch antenna residing in a cavity altair hyperworks. Third, and of paramount importance, is the visualization of the antenna current distribution, radiation patterns, and other radiation characteristics that are made available through fullwave simulations using feko. With the microstrip antenna, l2 is a bit too big for consumer mobile devices typically for space and military applications easy to designmanufacture, yet very capable good value, great for. Investigation of a novel dual band microstripwaveguide hybrid antenna element mohammad t. Farfield radiation patterns, current distribution on metallic layers, input impedance. Finite substrate microstrip line simulated with feko youtube. The model will not be constructed as part of this demonstration, but instead be used to demonstrate tasks that are often required in the feko suite components. The method meshes only the metallic antenna elements, so the resource requirements that are devoted to modelling of the dielectric layers of the glass is almost negligible. A demonstration model of a completed horn antenna with results is used as an example. Design of triple band microstrip patch antenna for wlan and. Experiment 1 cad feko half wavelength antenna part 1 duration. We will design a patch antenna with a pin feed excitation as opposed to microstrip feed that is. A9 proximity coupled patch antenna with microstrip feed.
Radiation pattern of the microstrip patch antenna figure 3. The simulated return loss for the patch antenna is presented in figure, which shows a better than 25 5 db return loss at 9. For example, the mom solver is well suited to solve metallic antennas while the fdtd method is a better choice for broadband or multiband antennas. A twoport ypatch antenna is modeled in feko to determine isolation between ports and radiation patterns of the antenna. Figure 4 from rectangular microstrip patch antenna for 2. Investigation of a novel dual band microstripwaveguide. Designing for designing of a microstrip patch antenna, we have to select the resonant frequency and a dielectric medium for which antenna is to be designed. Design and characterization of corporate feed rectangular.
Applications include antenna design, antennaplacement, microstrip antennas and circuits, dielectric media, scattering analysis, electromagneticcompatibility studies including cable harness modelling and many more. Feko simulation of a wedge mounted four element array antenna. Em modeling of farfield radiation patterns for antennas on. The use of suimulation feko to investigate antenna performance on mobile platforms 1. Estimating a large phased array antenna radiation pattern. A proper analysis of the radiation characteristics through these visualizations serves as a powerful educational tool to fully. Aces series on computational electromagnetics and engineering. Spiral antennas belong to the class of frequency independent antennas which operate over a wide range of frequencies. Special formulations are also included for efficient simulation of integrated windscreen antennas and antenna arrays. The examples have been selected to illustrate the features without being unnec. The triangular patch antenna that was designed in antenna magus and confirmed correct in feko is intended for use on an aircraft platform. Feko electromagnetic simulation software in altair hyperworks. Experiment 1 cad feko half wavelength antenna part 3 youtube. Leff the effective length of the patch is given by 4.
Communications technology is constantly aiming to achieve higher signaltonoise ratios snrs and especially for portable devices a compact design is required. This would then be expected to result in an unsymmetrical effect on your radiation pattern and specifically your vn cut. It is shaped as a twoarm spiral, or more arms may be used. Applied emag laboratory the use of simulation feko to investigate antenna performance on mobile platforms 1 daniel n. This aircraft can be imported into cadfeko and the antenna simply mounted in the correct position. For a given antenna simulated in hfss, cst and feko, the near field results are different. Patch antenna simulation issue altair feko altair forum. Mar 30, 2018 patch antenna design tutorial, altair feko, 5. The parameters of antenna such as reflection coefficient, gain, vswr and band width,with and without dgs are measured using network analyzer. End fire array antenna using cad feko software entc engg.
In method 1, a placeholder circular patch antenna was designed using antenna magus software, and the electrical far field was calculated in feko, by the method of moments, for a single patch over an infinite. Proposed antenna attains s 11 freeopen source antenna simulation tools. The antenna radiation pattern on y v plane is still non symmetric. Coplanar integration of dualband microstrip patch antenna using cad feko vishnupriya a. Antenna theory radiation pattern radiation is the term used to represent the emission or reception of wave front at the antenna, specifying its strength. I attach the updated model and the radiation pattern picture. The simulated eplane antenna pattern for this single element is shown in figure. Design and analysis of multilayer stackedpatch antenna with ltcctechnology. The use of passive elements in the construction of the antenna multilayer microstrip antenna can reduce the change of the impedance of the antenna when changing the. What do hobbyists use if they have a desireneed to simulate a pcb antenna for say sub 1ghz frequencies. Results the designed microstrip patch antenna with four slits and a pair of truncated corners are simulated using cadfeko for finding the electric far field radiation, gain, directivity, radiation pattern e. This radiation pattern shows that the antenna radiates more power in a certain direction than another direction. Coplanar integration of dualband microstrip patch antenna using cadfeko vishnupriya a.
For a given antenna simulated in hfss, cst and feko, the near. Radiation patterns for a patch antenna located on the left wing upper surface, as seen by a theta polarized antenna. Design, realization and measurements of microstrip patch. Design, optimization and simulation of a compact multi. Results the designed microstrip patch antenna with four slits and a pair of truncated corners are simulated using cadfeko for finding the electric. Fundamental specifications of patch antennas radiation pattern a patch antenna radiates power in certain directions and we say that the antenna has directivity usually expressed in dbi. Jun 22, 2018 simulate and analyze a rectangular patch antenna using ansys hfss, including return loss and 3d radiation fields.
The basics of patch antennas, updated orban microwave. Normalized radiation pattern for microstrip patch antenna. Advancements in high speed wlan technology demand antennas with high bandwidth, high gain and compact size. Feko model of a uslot rectangular patch antenna download. The inset feed technique is used for the matching between. The use of suimulation feko to investigate antenna. The directivity of patch antennas is approximately 57 db. Jun 02, 2015 the use of suimulation feko to investigate antenna performance on mobile platforms 1. In this work, the comparison of two designs of implantable patch antennas made of. In microwave systems, a spiral antenna is a type of rf antenna. It is shown that changing the number of the dielectric layers can increase the working bandwidth of the antenna compared with singlelayer antennas.
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. Feko electromagnetic simulation software in altair hyperworks 1. The examples have been selected to illustrate the features without being unnecessarily complex or requiring excessive run times. If the antenna had a 100% radiation efficiency, all directivity would be converted to gain.