S nagakishore bhavanam and vasujadevi m printed microstrip compact antenna with slots in ground plane and patch using hfss. To improve the gain, ground plane dimensions length and. The length and width of a substrate is equal to that of the ground plane. Design and analysis of 1x2 circular patch antenna array for. I will get back to you as soon as i find the one book. Microstrip patch antenna array design to improve better. Communication systems are the most powerful things that are which leading the universe with development of technology and electronics. The gain and hpbw varied periodically with increasing ground plane. This can be an issue if the antenna needs to be fed with standard 50.
Its fundamental frequency can be tweaked utilizing the diameter of the annular ring patch antenna, where length and area of the ground plane, the patch. The rectangular patch antenna is designed so that it. This paper presents analysis of two patch antenna, an eshape patch antenna and a patch antenna in the 5g frequency spectrum or better which is still in the mm wave frequency band. In, csrrs are used in ground plane to reduce the size of patch antenna and the size reduction is about 25%.
While they have less reduction of rearward radiation than a larger design, they still have useful gain and directivity. This video covers the implementation of a 10 ghz rectangular patch antenna, with an inset feed in ansys hfss. The feeding point is defined by using the parametric method of hfss software. Invented by bob munson in 1972 but earlier work by dechamps goes back to1953. Performance improvement of microstrip patch antenna using. Furthermore, the equivalent model of the human head with skin, fat, bone, dura, and cerebrospinal fluid csf is.
Example probe feed patch antenna ansoft high frequency structure simulator v10 users guide 5. Kokila assistant professorece, nandha engineering college, erode, tamil nadu, india. Introduction in recent years there is a need for more compact antennas due to rapid decrease in size of personal communication devices. Antenna projects using hfss electronics electrical projects. Getting started with hfss georgia institute of technology. Shows the geometry of the proposed four element square micro strip antenna in hfss four element square patch array antenna design simulations results are as follows. The antenna has a deformed rectangular patch with diagonal cuts and circular edges replacing the sharp edges, a 50. Microstrip patch antenna has a ground plane on the one.
Im designing a microstrip circular patch antenna on hfss. Patch antenna can be fed mostly with coaxial probe feed. The ground plane should extend beyond the edges of the patch by at least 2 to 3 times the board thickness for proper operation. A slot will be placed on the ground plane and feed line will be placed on lower substrate. As the microstrip patch antenna consist of a ground a patch and a substrate. Patch antenna parameters variation with ground plane dimensions. Microstrip antenna antenna patch dielectric substrate ground plane what is microstrip antenna. While designing a microstrip antenna in hfss, how much thickness. In, the rectangular patch antenna is supported by an interconnected frameshaped metamaterial structure at a height of 3. Analysis and design of rectangular microstrip patch.
The length of a ground plane lg and the width of a ground plane wg are calculated using the. Slots in the ground plane of rectangular patch we designed microstrip patch antenna with multiple number of slots. Analysis and design of rectangular microstrip patch antenna using hfss p. The best feeding point from the geometry of microstrip patch antenna we can understand that to couple the maximum energy to it the feed is provided beneath the ground directly see fig. This geometry has subsequently been analyzed by a number of researchers using various techniques and models.
Analysis of an aperture coupled microstrip patch antenna. But, input impedance of the antenna is more stable with the parameters i mentioned earlier. A linearlypolarized aperture coupled patch antenna design is characterized and optimized using hfss antenna simulation software. Hfss design of square patch antenna with slot duration. Bandwidth enhancement in microstrip rectangular patch. The basics of patch antennas, updated orban microwave. This fronttoback ratio is highly dependent on groundplane size and shape in real life. We added up to 15 slots in the ground plane with 3 mm spacing. Ground plane is partial providing good impedance match with width 30mm and 8mm length. The results are listed in the following table1, which are used in hfss software to design the antenna 5.
Microstrip patch antenna has a ground plane on the one 1. The effects of ground plane size on the characteristics of a square microstrip patch antenna designed on a lowpermittivity substrate with an air gap were investigated. Dualband operation of a microstrip patch antenna on a. Im designing a microstrip circular patch antenna on hfss, and had a few fundamental questions. Design of a rectangular microstrip patch antenna using. To make a smaller product, many commercial antennas have ground planes that are only slightly larger than the patch. In my design the patch size only the patch, not substrate and ground plane is 114. As the name indicates the antenna ground plane acts as a simulated ground. The coordinate axis is taken at the center of the patch or substrate. The aperture coupled microstrip patch antenna was proposed in pozar 1985 to alleviate the difficulties of feeding printed antennas operating at millimeter wave frequencies. This thesis focuses on the aperture coupled patch antenna due to the lack of fabrication and tuning documentation for the design of this antenna and its usefulness in arrays. Most microstrip antennas consist of multiple patches in a twodimensional array. The thing that really surprise me is that if a change 114.
The length of the patch for a rectangular patch antenna normally would be 0. The proposed microstrip patch antenna is realized on the roger rtduroid substrate with permittivity. Another 3 db can be added because there are 2 slots. A fractal microstrip antenna is implemented using the ebgs as a ground plane, and the measured results show that the reduction in the surface wave level is remarkable. I want to know the role of each of these terms in helical antenna.
Antenna based final year projects for ecean individual microstrip antenna consists of a patch of metal foil of various shapes a patch antenna on the surface of a pcbprinted circuit board, with a metal foil ground plane on the other side of the board. Schematic diagram of antenna with partial ground plane it is evident from the schematic diagram shown above, that the ground plane of the antenna is replaced by the partial ground plane. Improving microstrip patch antenna directivity using ebg. We can see that the conventional patch antenna without slots exhibit only one resonant frequency at 2. Design of a novel coaxial feed triple frequency patch antenna with. However, patch antennas have a main disadvantage i. This method employs ground plane between two substrates. The feed point location the feeding probe point location can be located at. We inserted slots in parallel and horizontally to the feeding line. Microstrip patch antenna using hfss ansys duration. So the planar monopole antenna can be reflected as a dipole antenna. In hfss gives the three dimension and bending technigues is very easy compared to the other. The characteristics studied include return loss, gain, halfpower beamwidth hpbw, and radiation pattern.
A typical sinusoidal function is utilized to characterize the shape of deformation, based on which different shapes of ground plane can be obtained by changing control parameters. Antenna based projects antenna based projects for ece. The dielectric substrate is placed between a ground plane lower layer and radiating metallic patch top layer. Patch and ground plane design of microstrip antennas by. It is found that for a monopole antenna like a quarter wavelength vertical, the ground acts as a plane to reflect the radio waves so that an image of the top half of the antenna is seen in the earth. Bandwidth improvement of microstrip patch antenna using. This paper covers the variation of electrical performance of air microstrip antennas due to its ground plane deformation. Example probe feed patch antenna anadolu university. Hfss open regions as electromagnetic simulation technology advances, so does the need for faster simulation. Reduced size patch antenna using complementary split ring. Directional patch antenna array design for desktop wireless internet abstract to improve desktop wireless internet access, two patch antenna configurations were investigated in order to find an alternative for a dipole antenna, which is commonly used for wifi access. The patch is of length l, width w, and sitting on top of a substrate some dielectric circuit board of thickness h with permittivity.
Directional patch antenna array design for desktop. Can someone please tell me the use of ground plane, ground. Enhanced bandwidth of uwb microstrip antenna using uslot. The fundamentals of patch antenna design and performance. Dielectric material is 30 mm wide and 30 mm long and height of the substrate is 1.
One familiar application of this type of patch antenna is the. The simulated results for antenna gain, return loss, vswr, directivity, are observed for the varying width of the ground plane. Keywordsmicrostrip patch antenna, frequency, gain, beamwidth, hfss,wireless communication. Performance analysis of e shape and 5g microstrip patch. In its most basic form, a microstrip patch antenna consists of a radiating patch on one side of a dielectric substrate which has a ground plane on the other side. Creating a rejection band by making slots in ground plane of pma.
The addition of a thick ground plane to the aperture coupled patch antenna. What is the optmized size for a ground plane for micro. Consider the microstrip antenna shown in figure 1, fed by a microstrip transmission line. Enhancing return loss of rectangular microstrip antenna. The rectangular patch antenna is designed so that it can operate at the resonance frequency. The patch antenna, microstrip transmission line and ground plane are made of high conductivity metal typically copper.
Effects of ground plane size on a square microstrip patch. Define a surface for the lumped port at the end of the microstrip. While designing a microstrip antenna in hfss, how much thickness of conducting patch and ground plane should we take for better results. All the outputs of the designed antenna using defected ground plane and conventional antenna is shown below a. These increased the source of communication between any nations, persons etc. Now this structure will be designed on the hfss software, with the partial ground plane values as x 15 mm and y 39. While designing a microstrip antenna in hfss, how much.
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