The designed microstrip patch antenna structure is shown in figure 5. Design of wearable patch antenna for wireless body area networks. Ihsan, a novel differential fed high gain patch antenna using resonant slot patch 0. Microstrip patch antenna for rfid applications request pdf. Microstrip patch antenna array with cosecantsquared. The antenna, which occupies an overall dimension of 0. The microstrip patch mspa design 1 provides a total antenna gain of 1. Wideband rectangular microstrip patch antenna using lprobe.
The designed antenna is suitable for mobile communication, cell phone antennas etc. Microstrip patch antenna has a ground plane on the one 1. Keywordsmicrostrip patch antenna, frequency, gain, beamwidth, hfss,wireless communication. A compact simple structure modified swastika shape multiband patch antenna is designed and investigated. I expect to get a gain of antenna at most 10 dbi but when i use results create far fields report rectangular plot etheta db i get about 20 db. Patch antenna hfss design with coax ground highlighted. Figure 6 sweep hfss simulated patch antenna s11 of 35. A triband hshaped microstrip patch antenna for dcs and wlan.
Design analysis and performance assessment of rectangular. The sensitivity of the stub length, loc on antenna impedance matching a cb figure 1. The dimensions of antenna can be found in the hfss simulation file. Design and simulation of slotted rectangular microstrip patch. You want to learn hfss software then click on below link. A novel microstrip flower patch antenna design for multiband operation. Patch antennas are available at mouser electronics. You can relate e field to gain by e sqrt 2z0 4pi gain where z0 is the intrinsic impedance of medium surrounding the antenna which is usually air for which its value is 125pi. The parameters evaluated were gain, beamwidth and return loss. However, radiation efficiency and bandwidth of a patch antenna.
I am getting the s11 plot correctly at 400mhz but i am getting negative gain like. A novel microstrip flower patch antenna design for multiband. A novel differential fed high gain patch antenna using. The use of the al 2 o 3 ceramic material substrate and its high dielectric constant made it possible to shrink the dimensions of the patch antenna. It consists of rectangular substrate and the metal trace layer as shown in fig. Antenna gain is expressed in terms of dbi ie with respect to isotropic radiator in comparison with another antenna. Simulated and measured copolarization radiation pattern in hplane are shown in fig.
Getting negative gain in designing a rectangular patch antenna in hfss. Optimized microstrip patch antenna mpa array design to. Beamforming for an 8x8 planar phased patch antenna array. The antenna is suitable for sband especially for ism application keywords.
How can i get gain dbi vs frequency graph in hfss or matlab. Pdf design and simulation of microstrip patch array antenna. Hello, this is the tutorial video on ansoft hfss software. Dual band x shape microstrip patch antenna for satellite. Feb 15, 2014 design of series feed microstrip patch antenna array using hfss simulator 1. From my current 2 dbi antenna to this 10 dbi antenna, i lost about 10 dbi of the signal strength that i had with the 2 dbi antenna. The singleelement antenna has an impedance bandwidth of 280 mhz from 10. Design of series feed microstrip patch antenna array using.
As the phasing is changed to steer the beam toward the horizon, the array reaches a limit due to the patterns of the original patch antennas, and a gain plot with large side lobes forms. Design of seriesfed bandwidthenhanced microstrip antenna. Compact modified swastika shape patch antenna for wlanwimax. Design and simulation by hfss of a slim uwb pifa antenna. I expect to get a gain of antenna at most 10 dbi but when i use results. Wideband aperture coupled patch array antennas high gain. In this study, a new x shaped slotted multiband antenna was designed with a 1. Microstrip patch antenna for rfid applications edge. Slot loaded microstrip patch antenna for wlan and wimax.
Gain and the electric field are different quantities. Therefore, the proposed antenna is a good candidate for wireless communication. Getting negative gain in designing a rectangular patch antenna in. The peak gain is just over 23 dbi and the 3 db beamwidth is about 12 degrees. Single element rectangular patch antenna the dimension of the patch is 9. Antenna radiation pattern is measured in patch hplane yzplane in fig. The microstrip patch antenna model used for the numerical simulation in ansoft hfss is shown in fig. Ansys hfss is the industry leading 3d electromagnetic em simulation tool for high frequency and high speed electronic components including antenna design and placement. This workshop is intended to show how to simulate and analyze a microstrip patch antenna using ansys hfss. Development of onesided directional thin planar antenna for. Compact doublep slotted insetfed microstrip patch antenna. This truncation generates two degenerate resonances which result in a flattened frequency response of the input impedance.
The simulation software used is hfss high frequency structure simulator. The antenna is designed and fabricated on ceramicpolytetrafluoroethylene ptfe composite material substrate with. Your gain is in dbi which is decibels compared to an isotropic uniform radiator. Hfss, feed point location, microstrip patch antenna, simulation, return loss. Microstrip patch antenna design santa clara university. To improve the antenna bandwidth, two of the patches are modified with truncated corners in the diagonal direction. Directional patch antenna array design for desktop wireless internet.
Table 1 relationship between the frequency, s11, and antenna length. The optimal dimension of the proposed antenna has been achieved through various simulations in finite element method based 3d fullwave electromagnetic high frequency structure simulator hfss. Analysis and design of rectangular microstrip patch antenna. Simulated s11 vs frequency with the stub length,loc as the parameter. How to improve gain parameter of slotted patch antenna.
The surface area reduction is obtained at the expense of the antenna gain. The ground plan has the same dimensions as the antenna. In 11, a single layer rectangular patch antenna of wideband has been explained where impedance bandwidth of greater than 20% has been obtained. Home beamforming for an 8x8 planar phased patch antenna array for 5g at 28 ghz. Does anyone have an idea about the wave port or lumped port in hfss,which should be used especially for microstrip patch antenna in uwb range i. The antenna presents a patch size reduction of 44% when compared to a conventional square micro strip patch antenna. Mar 04, 2018 hello, this is the tutorial video on ansoft hfss software.
Feb 14, 2015 the proposed antenna gain is greater than 6. The antenna is designed on rogers rtduroid 5880 tm substrate by using ansoft hfss v. If you really want a quality high gain wifi antenna, try one of the professional antenna manufacturers. Hi everybody, i run simulation of microstrip antenna in hfss 11. Measurement results of the sms patch antenna are shown in fig. The rectangular micro strip patch antenna was analysed using ansofansys hfss and also made a comparision among the. The proposed antenna is implemented and fabricated on fr4 epoxy glass substrate er 4. Design of wearable patch antenna for wireless body. It is demonstrated that the fabricated antenna offers improved values of s 11 and vswr. Oct 14, 2014 convert indoor 5 dbi wifi router tlwr841n to make long range 16dbi outdoor 5km air station duration. To determine the width w, the microstrip patch antenna calculator was used to provide an initial. Analysis and design of rectangular microstrip patch antenna using hfss p. This paper presents design and simulation of a rectangular micro strip patch array antenna at 2.
The simulation gave results good enough to satisfy our requirements to fabricate it on hardware which can be used wherever needed. Keywordseshaped slot microstrip, rectangular patch,coaxial probe, gps, hfss software. By using four slots on patch antenna he designed a g shape on patch. Although the designed and actual manufactured sample dimensions differ, matching is still satisfactory though at %. Jan 11, 2019 sweeping the beam to a corner of the array at direction 45, 40 reduces the peak gain down to 21. Also, the highest gain offered in envelope shaped antenna in 6 is 10. The 2x2 patch array antenna is simulated using ansoft hfss. Beamforming for an 8x8 planar phased patch antenna array for. The rectangular micro strip patch antenna was analysed using ansofansys hfss and also made a comparision among the different substrates which shows different results based on same parameters.
If you are looking for hfss antenna design this video will help you. The antenna has an overall dimension of 70 x 70 x 11. Sumathi department of electronics and communication engineering, nandha engineering college, erode, tamilnadu, india. First the model of the microstrip patch antenna has to be drawn in hfss. An electromagnetic simulation model of an lband microstrip patch antenna with integrated pin diodes is constructed using ansoft high frequency structure simulator hfss and is analyzed to. Then, the recessed microstrip feeds for the other two patches are. For this reason, different types of antenna designs have been narrated 7. The measured gain of the antenna is around 5 dbi at. A novel seriesfed microstrip patch array antenna for 3739 ghz beamforming is proposed. The patch is placed at a height h equal to 2 mm from the ground plan. In hfss 10 i would get this quantity in dbi but in hfss11 i dont understand why it doesnt.
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