Many researchers reported design of microstrip patch antennas based on either incorporating slots or introducing multiple layers. Wideband double u slot patch antenna for 1 ghz to 2 ghz wideband rsma with u slot 0. Abstract in this study, a 28ghz uslot rectangular microstrip patch antenna for 5g applications is proposed. In this paper, a multiband microstrip patch antenna with simple strip line feeding, which enables a handheld communicating device to. The multiband u slotted patch antennas are usually designed with complex feeding such as lprobe, mprobe feedings. The design parameters are radius of circular patch, width and length of slot, height of air gap. The u slot patch antenna structure consists of a patch, u shaped slot.
The radiation patterns are stable across the passband. So for the antenna miniaturization i and bandwidth improvement bridged double u slot micro strip patch antenna used. Abstract in this study, a 28ghz u slot rectangular microstrip patch antenna for 5g applications is proposed. Actually, slot antenna is a radiating element formed by a slot in a metallic surface. Here they use two u slot shape on substrate and single u shape cut on left side of the ground plane.
In this work, a double u slot loaded microstrip antenna is designed, simulated, fabricated and tested for dual band operation. Design of the proposed antenna is a combination of double u. 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. Uslot patch antenna design left is top design, right is bottom design. Design of planar invertedf antennas pifa for multiband. International conference on multidisciplinary research. 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. Parametric study the parameters that have critical influence on the antenna performance are chosen for parametric study. It has been developed to be used in future wimax technology. The broadband characteristic of a microstrip patch antenna with u shaped slot has been confirmed by many published results 24. The presented antennas are suitable for multiband wireless communication systems. A double uslots microstrip antenna for triplebands operation. Coaxial cable is mounted with patch as medium of power.
One of the main restrictions with patch antennas is their naturally narrowband performance due to its resonant nature. A thick substrate helps broaden the individual bandwidths. The uslot antenna concept has been used in patch antenna designed to reduce antenna size. 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.
Journal of computing design of coaxial fed microstrip. A 28ghz uslot microstrip patch antenna for 5g applications. A multiband triplelayer probe fed double uslot microstrip patch antenna for next generation wireless applications is proposed in this paper. In this case, adding the u shaped slot in the patch enhances bandwidth by 33. Pier c online design and analysis of double u slot. Design of triplelayer double uslot patch antenna for. In this paper, a modified double u slot planar microstrip antenna is designed, simulated and fabricated to operate at 2. This paper proposes the use of a patch antenna with two u shaped slots to achieve dual band operation. The u slot patch antenna structure consists of a patch, u shaped slot, a ground plane and coaxial feed lines. Rectangular patch antenna, double u slot loaded rectangular patch, wideband disk antenna.
A wideband single layer coaxially fed rectangular microstrip patch antenna with a double u slot on the patch is presented. Designs of both single and double uslot are shown below. The proposed antenna is simulated in cst microwave studio and fabricated for measurements. The design of ellipticalpatch antenna with single uslot by using hfss software is shown above in figure 1 2. Matin department of computer science and engineering brac university 66, mohakhali, dhaka 1212. The antenna is designed based on extensive ie3d simulation studies. One more u slot secondary u slot is introduced inside the u slot. Bridged double uslot microstrip patch antenna for wireless. A few designs by using u slot in getting the dual frequency and circular polarization were widely discussed in 511. A rectangular microstrip antenna with two ushaped slots on the patch is described.
The proposed antenna generates three resonant frequencies at 2. A rectangular microstrip patch antenna has been investigated and its performance has been analyzed with the aid of ansoft hfss version. A novel design of patch antenna using uslot and defected. Design of double u slot patch antenna a low profile double u slots antenna for wimax operation has low return loss and bandwidth. May 25, 2019 slot antenna differs with patch antenna in many aspects. The reported double u slot cut rectangular microstrip antenna yields dual and wide band operation in 2100 and 5400 mhz frequency bands. So for the antenna miniaturization and bandwidth improvement bridged double u slot micro strip patch antenna used.
The uslot patch antenna structure consists of a patch, ushaped slot, a ground plane and coaxial feed lines. Design of double uslot multiband microstrip patch antenna. With proper dimensions for the second u slot bandwidth as high as 49. 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. It has a triple band of frequency the propose antenna12for specific wimax application is shown below figure 6.
As the patch and the u slot resonate almost at same frequency, this will decrease the value of return loss at that resonant frequency. Detailed simulation and experimental investigation are conducted to understand the behavior of the two u slots. For the past decades, the microstrip, slot, and stacked patch antennas have been used to implement multiband. 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. Hence, ill present the basics, present some experimental results and try to give an idea of design parameters. Double uslot microstrip patch antenna ieee conference. The proposed design of the antenna is shown in fig. The u slot patch antenna is designed for increasing the bandwidth and return loss but gain cannot increase.
Multiband uslot microstrip patch antenna with defective. Pier c online design and analysis of double u slot loaded. The dimensions of the secondary u slot are 2 mm,bs2 4 and ws2 1mm as shown in fig. Probably the most serious limitations of the microstrip antenna is the narrow bandwidth of the basic element, which is usually around a few persent. Design of triplelayer double uslot patch antenna for wireless. The u slot patch antenna was originally developed as a singlelayer, single patch wideband antenna. From the fig 3, it can be shown that the u slot microstrip patch antenna at 5. Abstract this letter presents design of a compact 0. The antenna is groundfed and the geometry has two u shaped slots in the middle and corners are truncated. So we are comparing return loss, 3d gain plot, 2d gain plot and radiation pattern. Although it was mainly used for bandwidth enhancement, it became realizable, that it can be used to design patch antennas with dual and multiband. In microstrip antennas, embedded slots can also be used to enhance the impedance bandwidth of a single band antenna. A wide band patch antenna fed by an lprobe can be designed for dual and multiband application by cutting uslots on the patch.
Double uslot rectangular patch antenna ieee xplore. Tiny microstrip antenna covers wlan, lte, and wimax. A dualband characteristic was obtained by using a double u. Abstract this paper presents the numerical simulation of double uslots microstrip patch antenna for w imax application. Therefore, the antenna will be better work in the wimax applications and wireless communication s system. Request pdf double uslot rectangular patch antenna for multiband applications multiband applications can be realized as a result of designing a double. In this paper, a double u slot microstrip patch antenna is designed and simulated for wimax bands. Dual and multiband uslot patch antennas request pdf. The single u shaped slot is added based on a circuit theory concept to provide dualband broadband characteristics. Double uslots patch antenna for triband wireless systems. The optimized values of the dimensions of the first u slot are provided in table 2. A compact microstrip patch antenna with two u slots shape is presented. The following table shows the substrate properties as well as the geometrical dimensions of the double u slot patch antenna. In this paper design of triplelayer double u slot patch antenna is proposed to get multiple bands and wide bandwidth.
The parameters are length and width of the slot and patch. The graph is plotted for frequency in ghz versus return loss in db. Figure 6 from double uslot microstrip patch antenna for. Simulated results of double u slot structure patch antenna with primary u slot resonates at single the introduction of secondary u slot as. Pdf in this paper, a design of double uslots microstrip antenna with triple bands operation is presented. It has a triple band of frequency the propose antenna 12for specific wimax application is shown below figure 6. The proposed antenna is feed by the transmission line. A double u slot patch antenna with dual wideband characteristics abstract.
The dimensions of antenna are arrived by conducting the parametric study using ansoft hfss software. The xband which ranges from 8ghz to 12 ghz frequencies provides vast applications in satellite and. Microstrip patch antennas are strong candidates for use in many wireless communications applications. Fig 3 shows the return loss for the single u slot antenna which is the simulated result. Its simulated result displays impedance bandwidth from 3. Bridged double u slot microstrip patch antenna for wireless communication rajneesh kumar patel1, mr. Uslot patch antenna for broadband wireless communications. Double uslot microstrip patch antenna for wlan and wimax. The patch antenna with u slot is shown in figure 2. Fokhrul islam, journalinternational journal of computer applications, year2017, volume162, pages4448.
The analysis of dual band double u slot cut rectangular microstrip antenna is presented. The proposed geometry comprised of suspended truncated circular microstrip antenna, with double u slot etched on the radiating element. The u slot antenna concept has been used in patch antenna designed to reduce antenna size. The first is the analysis of single element narrowband rectangular micro strip antenna which operates at the central frequency of 2. 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. Sahadah performance comparison between rectangular and circular patch antenna ar. A parametric study on the structure is made inorder to obtain the best possible size and position of the connectors. Design of multiband uslot microstrip patch antenna for gsm. Pdf a double uslots microstrip antenna for triplebands operation. A prototype antenna is fabricated and experimentally verified. 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. Also, by employing two shorting walls to the patch antenna a wider impedance bandwidth has been achieved 3. 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. And it resonates at another frequency for the insertion of second u slot inside the patch.
Simulation and measurement results are presented to illustrate this. Abstracta novel design of patch antenna is presented with double u slot structure on patch with ground irregularities. Triple band double u slots patch antenna for wimax mobile applications. Pifa for multiband with wide impedance bandwidth is investigated in 5, moreover, a pifa and pifla design is reported. Connected uslots patch antenna for wimax applications. The use of h slot and u slot for the microstrip patch antenna is discussed in 1112 14. A slot planar patch antenna is designed, simulated and fabricated to operate at 2. On the use of slots in the design of patch antennas. Analysis of double uslot cut rectangular microstrip antenna. Modified double u slot penta band microstrip antenna for. Dual ushaped slots are incorporated in the radiating patch and a maximum bandwidth of 16. This paper proposes the use of a patch antenna with two ushaped slots to achieve dual band operation. The advantage of this technique is that we get high value of return loss.
Figure 6 from double uslot microstrip patch antenna for wlan. 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. U slot patch antenna for broadband wireless communications m. Nilavalan,triple band double u slot patch antenna for wimax mobile application. Also, several designs of broadband slots antenna have been reported 56. A double uslot patch antenna with dual wideband characteristics abstract. Microstrip u shaped dualband antenna, applied electromagnetic, the design of printed rhombshaped antenna with slits for. Microstrip patch antenna, multiband, u shaped slot, elliptical patch antenna. Design structure of the single u slot patch w 40mm c1 5mm. A practical miniaturized u slot patch antenna with enhanced bandwidth, progress in electromagnetics. 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. Parametric studies of antenna structure with double uslot, variation of feed position, and also with multiple layers are presented. The second aspect is the analysis and design of slot cut dual u shaped micro strip antenna. 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 further double u slot cut rectangular.
A rectangular microstrip antenna with two ushaped slots on the patch is. Slot antenna differs with patch antenna in many aspects. Using a foam layer of thickness 9% wavelength as the supporting substrate, an impedance bandwidth of 44% is achieved. A rectangular microstrip antenna with two u shaped slots on the patch is described. Triple band micro strip patch antenna with dual u slot for wlanwimax applications in this paper they discuss about increasing bandwidth and return loss. Ultra wideband microstrip diamond slotted patch antenna. Pdf triple band double uslots patch antenna for wimax. Double uslot rectangular patch antenna for multiband applications. Uslot patch antenna principle and design methodology. Patch antenna is actually a patch antenna placed over a antenna base. In this work, a doble u slotted, circular polarized micrrostrip patch antenna is designed. A novel multiband pifa has been reported for multiband mobile terminals 4. 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. An ultra wideband uwb microstrip diamond slotted patch antenna with enhanced bandwidth is presented in this paper.
If array of the u slot patch antenna is used then the gain can be improved. 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. 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. Dual uslot loaded patch antenna with a modified lprobe feeding. What is the difference between slot antenna and patch. Uslot microstrip patch antenna for wireless application. Abstractpatch antennas incorporating a ushaped slot are wellknown to. Detailed simulation and experimental investigation are conducted to understand the behavior of the two u. Compact double uslots patch antenna for mobile wimax. May 19, 2015 double u slot microstrip patch antenna abstract. A simple, lowcost, lowprofile double uslot microstrip patch antenna was designed, fabricated and measured to operate at the three desired resonant bands. Design and analysis of compact u slot microstrip patch. Double uslot rectangular patch antenna for multiband.