Here they use two u slot shape on substrate and single u shape cut on left side of the ground plane. Design of the proposed antenna is a combination of double u. Tiny microstrip antenna covers wlan, lte, and wimax. If array of the u slot patch antenna is used then the gain can be improved. The basic u slot antenna was first developed a couple of decades ago, as a linearly polarized, single layer, single patch antenna to become a simple to design, easy to manufacture robust antenna with wideband performance. Bridged double uslot microstrip patch antenna for wireless. Pdf a double uslots microstrip antenna for triplebands operation. The antenna gives the first resonant frequency due to patch itself and small u slot. It has been developed to be used in future wimax technology. The second aspect is the analysis and design of slot cut dual u shaped micro strip antenna. Nilavalan, compact double u slots patch antenna for mobile wimax applications,ieee 4 o.
Using double or dual slot stacked patch technique use can get better return loss by increases the length and width of slot antenna. Actually, slot antenna is a radiating element formed by a slot in a metallic surface. Abstract this paper presents the numerical simulation of double uslots microstrip patch antenna for w imax application. In microstrip antennas, embedded slots can also be used to enhance the impedance bandwidth of a single band antenna. In this paper, a modified double u slot planar microstrip antenna is designed, simulated and fabricated to operate at 2. The u slot patch antenna is designed for increasing the bandwidth and return loss but gain cannot increase. In this paper, a double u slot microstrip patch antenna is designed and simulated for wimax bands. It has a triple band of frequency the propose antenna 12for specific wimax application is shown below figure 6. Request pdf double uslot rectangular patch antenna for multiband applications multiband applications can be realized as a result of designing a double. The proposed design of the antenna is shown in fig. A rectangular microstrip patch antenna has been investigated and its performance has been analyzed with the aid of ansoft hfss version. A 28ghz uslot microstrip patch antenna for 5g applications.
Fig 3 shows the return loss for the single u slot antenna which is the simulated result. A thick substrate helps broaden the individual bandwidths. Simulated results of double u slot structure patch antenna with primary u slot resonates at single the introduction of secondary u slot as. Using a foam layer of thickness 9% wavelength as the supporting substrate, an impedance bandwidth of 44% is achieved.
Matin department of computer science and engineering brac university 66, mohakhali, dhaka 1212. Uslot patch antenna design left is top design, right is bottom design. Uslot patch antenna principle and design methodology. A rectangular microstrip antenna with two ushaped slots on the patch is. Parametric studies of antenna structure with double uslot, variation of feed position, and also with multiple layers are presented. Many researchers reported design of microstrip patch antennas based on either incorporating slots or introducing multiple layers. A novel multiband pifa has been reported for multiband mobile terminals 4. Also, by employing two shorting walls to the patch antenna a wider impedance bandwidth has been achieved 3. Detailed simulation and experimental investigation are conducted to understand the behavior of the two u. So for the antenna miniaturization and bandwidth improvement bridged double u slot micro strip patch antenna used. Design of double u slot patch antenna a low profile double u slots antenna for wimax operation has low return loss and bandwidth. Substrate 1 substrate 2 fed patch parasitic patch ground plane coaxial feed a b coaxial feed ground plane substrate u slot patch stacked parasitic patch u shaped slot seldom exceeds 20% bw. Designs of both single and double uslot are shown below. The proposed antenna generates three resonant frequencies at 2.
It has a triple band of frequency the propose antenna12for specific wimax application is shown below figure 6. Uslot patch antenna for broadband wireless communications. The proposed geometry comprised of suspended truncated circular microstrip antenna, with double u slot etched on the radiating element. International conference on multidisciplinary research. The u slot patch antenna structure consists of a patch, u shaped slot. The radiation patterns are stable across the passband. Analysis of double uslot cut rectangular microstrip antenna. Selection of feeding technique for a microstrip patch antenna is important decision because its affects the bandwidth,return loss,vswr patch size and smith chart. A wide band patch antenna fed by an lprobe can be designed for dual and multiband application by cutting uslots on the patch. From the fig 3, it can be shown that the u slot microstrip patch antenna at 5. Pier c online design and analysis of double u slot loaded.
The presented antennas are suitable for multiband wireless communication systems. Design structure of the single u slot patch w 40mm c1 5mm. Abstracta novel design of patch antenna is presented with double u slot structure on patch with ground irregularities. The design parameters are radius of circular patch, width and length of slot, height of air gap. To analyze the dual band response at above frequencies, the resonance curve plots and surface current distributions for equivalent rectangular patch and single u slot and. This paper proposes the use of a patch antenna with two u shaped slots to achieve dual band operation. So for the antenna miniaturization i and bandwidth improvement bridged double u slot micro strip patch antenna used. The following table shows the substrate properties as well as the geometrical dimensions of the double u slot patch antenna. Double uslot microstrip patch antenna ieee conference. Ultra wideband microstrip diamond slotted patch antenna. A slot planar patch antenna is designed, simulated and fabricated to operate at 2. Detailed simulation and experimental investigation are conducted to understand the behavior of the two u slots.
Hsingyi chen and yu tao, performance improvement of a uslot patch antenna using a dualband frequency selective surface with modified jerusalem cross elements, ieee transactions on antennas and propagation, vol. A parametric study on the structure is made inorder to obtain the best possible size and position of the connectors. Pifa for multiband with wide impedance bandwidth is investigated in 5, moreover, a pifa and pifla design is reported. Figure 6 from double uslot microstrip patch antenna for wlan. The single u shaped slot is added based on a circuit theory concept to provide dualband broadband characteristics. In this work, a double u slot loaded microstrip antenna is designed, simulated, fabricated and tested for dual band operation. In this paper, a multiband microstrip patch antenna with simple strip line feeding, which enables a handheld communicating device to. The u slot patch antenna was originally developed as a singlelayer, single patch wideband antenna. The reported double u slot cut rectangular microstrip antenna yields dual and wide band operation in 2100 and 5400 mhz frequency bands. Wideband double u slot patch antenna for 1 ghz to 2 ghz wideband rsma with u slot 0. The graph is plotted for frequency in ghz versus return loss in db. Positioning the double u slots on the patch was a main challenge in the design, since in order to get a compatibility between the two slots and the desired operation frequency, optimized positioning of the two slots on the patch was required.
Nilavalan,triple band double u slot patch antenna for wimax mobile application. Design and analysis of compact u slot microstrip patch. Therefore, the antenna will be better work in the wimax applications and wireless communication s system. A double uslots microstrip antenna for triplebands operation. The advantage of this technique is that we get high value of return loss. One of the main restrictions with patch antennas is their naturally narrowband performance due to its resonant nature. In this case, adding the u shaped slot in the patch enhances bandwidth by 33. A compact microstrip patch antenna with two u slots shape is presented. Design of triplelayer double uslot patch antenna for. The proposed antenna is feed by the transmission line. Microstrip u shaped dualband antenna, applied electromagnetic, the design of printed rhombshaped antenna with slits for. Uslot microstrip patch antenna for wireless application. The multiband u slotted patch antennas are usually designed with complex feeding such as lprobe, mprobe feedings. A multiband triplelayer probe fed double uslot microstrip patch antenna for next generation wireless applications is proposed in this paper.
The broadband characteristic of a microstrip patch antenna with u shaped slot has been confirmed by many published results 24. Design of planar invertedf antennas pifa for multiband. Abstractpatch antennas incorporating a ushaped slot are wellknown to. Simulation and measurement results are presented to illustrate this. The use of h slot and u slot for the microstrip patch antenna is discussed in 1112 14. Journal of computing design of coaxial fed microstrip. The design of ellipticalpatch antenna with single uslot by using hfss software is shown above in figure 1 2. The antenna is designed based on extensive ie3d simulation studies. Double uslot rectangular patch antenna for multiband applications. The patch antenna with u slot is shown in figure 2. Hence, ill present the basics, present some experimental results and try to give an idea of design parameters. Pier c online design and analysis of double u slot.
Rectangular patch antenna, double u slot loaded rectangular patch, wideband disk antenna. Double uslot rectangular patch antenna for multiband. Although it was mainly used for bandwidth enhancement, it became realizable, that it can be used to design patch antennas with dual and multiband. The analysis of dual band double u slot cut rectangular microstrip antenna is presented. The antenna is groundfed and the geometry has two u shaped slots in the middle and corners are truncated. Parametric study the parameters that have critical influence on the antenna performance are chosen for parametric study. U slot patch antenna has been reported recently for 5 ghz wlan 7, and also a monopole antenna for wimax applications was proposed in 8. U slot patch antenna for broadband wireless communications m. Triple band double u slots patch antenna for wimax mobile applications.
In this paper, a double uslot microstrip patch antenna is designed and simulated for wimax bands with over all dimensions 50 mm x 40 mm and height of 1. Pdf triple band double uslots patch antenna for wimax. The optimized values of the dimensions of the first u slot are provided in table 2. Figure 6 from double uslot microstrip patch antenna for. A double uslot patch antenna with dual wideband characteristics abstract. Abstract in this study, a 28ghz uslot rectangular microstrip patch antenna for 5g applications is proposed. The xband which ranges from 8ghz to 12 ghz frequencies provides vast applications in satellite and.
Also, several designs of broadband slots antenna have been reported 56. Design of triplelayer double uslot patch antenna for wireless. Connected uslots patch antenna for wimax applications. The dimensions of antenna are arrived by conducting the parametric study using ansoft hfss software. This paper proposes the use of a patch antenna with two ushaped slots to achieve dual band operation. Abstract in this study, a 28ghz u slot rectangular microstrip patch antenna for 5g applications is proposed. May 25, 2019 slot antenna differs with patch antenna in many aspects. Coaxial cable is mounted with patch as medium of power. Microstrip patch antenna, multiband, u shaped slot, elliptical patch antenna.
Unfortunately, the equations related to the cavity backed slot antenna are somewhat complicated and in my opinion dont give a good idea of how they work. Pdf in this paper, a design of double uslots microstrip antenna with triple bands operation is presented. Jan 22, 2018 the single u shaped slot is added based on a circuit theory concept to provide dualband broadband characteristics. A dualband characteristic was obtained by using a double u. One more u slot secondary u slot is introduced inside the u slot. Dual and multiband uslot patch antennas request pdf. The first is the analysis of single element narrowband rectangular micro strip antenna which operates at the central frequency of 2. The u slot patch antenna structure consists of a patch, u shaped slot, a ground plane and coaxial feed lines. The u slot antenna concept has been used in patch antenna designed to reduce antenna size. As a result triband response is achieved with gain reaching 0. It has recently been shown that it can also be designed to perform a number of other functions. Its simulated result displays impedance bandwidth from 3. A rectangular microstrip antenna with two u shaped slots on the patch is described.
What is the difference between slot antenna and patch. Slot antenna differs with patch antenna in many aspects. Dual ushaped slots are incorporated in the radiating patch and a maximum bandwidth of 16. The dimensions of the secondary u slot are 2 mm,bs2 4 and ws2 1mm as shown in fig. Sahadah performance comparison between rectangular and circular patch antenna ar. A multi u slot patch antenna has been reported recently for 5 ghz wlan 7, and a monopole antenna for wimax applications was proposed in 8. Compact double uslots patch antenna for mobile wimax. Microstrip patch antennas are strong candidates for use in many wireless communications applications. On the use of slots in the design of patch antennas. Probably the most serious limitations of the microstrip antenna is the narrow bandwidth of the basic element, which is usually around a few persent. Triple band micro strip patch antenna with dual u slot for wlanwimax applications in this paper they discuss about increasing bandwidth and return loss. Dual uslot loaded patch antenna with a modified lprobe feeding. A rectangular microstrip antenna with two ushaped slots on the patch is described.
Measured return loss and radiation patterns compared fairly well with the simulated results. So we are comparing return loss, 3d gain plot, 2d gain plot and radiation pattern. A prototype antenna is fabricated and experimentally verified. Double uslot microstrip patch antenna for wlan and wimax. A few designs by using u slot in getting the dual frequency and circular polarization were widely discussed in 511. Abstract this letter presents design of a compact 0. The design of antenna which is proposed here have two different size u slots which are connected via a bridging element and multiple slot cut in the ground specially inverted cshape, to obtain wimax frequency band and. The parameters are length and width of the slot and patch. Double uslot rectangular patch antenna ieee xplore. Double uslots patch antenna for triband wireless systems.
Abstract this paper presents the numerical simulation of double uslots microstrip patch antenna for wimax application. Fokhrul islam, journalinternational journal of computer applications, year2017, volume162, pages4448. A practical miniaturized u slot patch antenna with enhanced bandwidth, progress in electromagnetics. Multiband uslot microstrip patch antenna with defective. The next broadband antenna design to be simulated is a probefed, rectangular patch on a thick foam substrate with a cutout double u slot on it as shown in figure 7. A wideband single layer coaxially fed rectangular microstrip patch antenna with a double u slot on the patch is presented. It can, therefore, be used in worldwide interoperability for microwave access compliant communication equipment. Design of multiband uslot microstrip patch antenna for gsm.
A simple, lowcost, lowprofile double uslot microstrip patch antenna was designed, fabricated and measured to operate at the three desired resonant bands. Modified double u slot penta band microstrip antenna for. In this paper design of triplelayer double u slot patch antenna is proposed to get multiple bands and wide bandwidth. A novel design of patch antenna using uslot and defected. Bridged double u slot microstrip patch antenna for wireless communication rajneesh kumar patel1, mr. As the patch and the u slot resonate almost at same frequency, this will decrease the value of return loss at that resonant frequency. In this paper, a double u slot microstrip patch antenna is designed and simulated for wimax bands with over all dimensions 50 mm x 40 mm and height of 1. For the past decades, the microstrip, slot, and stacked patch antennas have been used to implement multiband.
And it resonates at another frequency for the insertion of second u slot inside the patch. Patch antenna is actually a patch antenna placed over a antenna base. A practical slot antenna is the cavitybacked slot antenna. A double u slot patch antenna with dual wideband characteristics abstract. Design of double uslot multiband microstrip patch antenna. The uslot antenna concept has been used in patch antenna designed to reduce antenna size. May 19, 2015 double u slot microstrip patch antenna abstract.
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