Abstracta novel design of patch antenna is presented with double u slot structure on patch with ground irregularities. What is the difference between slot antenna and patch. But they were achieved nearly 16db of return loss only. Patch antenna for 2 4ghz with circular polarisation youtube. Double uslot microstrip patch antenna for wlan and wimax. A novel design of patch antenna using uslot and defected. Abstract this paper presents the numerical simulation of double uslots microstrip patch antenna for w imax application. By using mathematical analysis we have designed the u slot microstrip antenna for amateur radio application which operates in the frequency band 5. Uslot patch antenna for broadband wireless communications. This paper presents the multiband u slot microstrip patch antenna cover 3. Several types of antennas are available in practical, but microstrip patch antenna mpa is one of the most. In the proposed antenna design, a combination of dual u slot and multiple layers is used to get multiple bands and wide bandwidth. The multiband u slotted patch antennas are usually designed with complex feeding such as lprobe, mprobe feedings. A double u slot microstrip antenna was used for mobile wimax application.
Geometry of the proposed u slot microstrip 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. Matin department of computer science and engineering brac university 66, mohakhali, dhaka 1212 bangladesh abstract. Dual frequency operation is achieved by inserting a pair of symmetric facetoface uslots on a top radiating patch. Request pdf a compact dual frequency double uslot rectangular microstrip patch antenna for wifiwimax.
The proposed antenna is feed by the transmission line. A prototype antenna is fabricated and experimentally verified. This should increase the bandwidth of the antenna as well as gain. A multi uslot patch antenna has been reported recently for 5 ghz wlan 7, and also a. In this paper, a double u slot microstrip patch antenna is designed and simulated for wimax bands. Hence, ill present the basics, present some experimental results and try to give an idea of design parameters. A practical slot antenna is the cavitybacked slot antenna. This antenna covers all the operating bands of wlan and wimax but the gain is reduced due to more number of slots on the patch. Slot antenna differs with patch antenna in many aspects.
In this paper, a modified double u slot planar microstrip antenna is designed, simulated and. 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. With modification, it is amenable to waveguide, coplanar waveguide cpw, coaxial, slot line, or microstrip feeding schemes and has been used in all aspects of wireless and radar applications. The uslot patch antenna structure consists of a patch, ushaped slot, a ground plane and coaxial feed lines. A microstirp patch antenna with double lslot for both wimax and wlan application is reported in. Dual frequency operation is achieved by inserting a pair of symmetric facetoface u slots on a top radiating patch. A few designs by using u slot in getting the dual frequency and circular polarization were widely discussed in 511. Recently, proposed printed antenna for wimax operation has the three.
Design of multiband uslot microstrip patch antenna for gsm. Analysis of multiresonant rectangular microstrip antenna. Dual band double uslot loaded antenna with ground slot for wifi and wimax applications abstract. If another u slot is cut in the same patch, antenna becomes a tripleband antenna. Pdf design of double uslot multiband microstrip patch antenna. The antenna is designed based on extensive ie3d simulation studies. And it resonates at another frequency for the insertion of second u slot inside the patch.
The presented antennas are suitable for multiband wireless communication systems. Dimensions of the proposed u slot microstrip patch antenna fig. Here the double u slots have been combined with bridge gap. Design of double u slot patch antenna a low profile double u slots antenna for wimax operation has low return loss and bandwidth.
The double modified u slots planar patch antenna is designed, simulated and fabricated to operate at 2. Recently, proposed printed antenna for wimax operation has the three frequencies bands but the return loss not over 30db. The broadband characteristic of a microstrip patch antenna with ushaped slot. Double u slot microstrip patch antenna for wlan and wimax applications md. My intention for posting just pictures with dimensions is for. Aug 24, 2014 in this video i will show you how to build a very simple circular polarised patch antenna for 2. One of the drawbacks was complicated antenna structure 9. Dual band double uslot loaded antenna with ground slot for wifi.
A new dualband microstrip antenna with ushaped slot and a. A multiband triplelayer probe fed double u slot microstrip patch antenna for next generation wireless applications is proposed in this paper. Wireless local area network or wifi wireless fidelity is a way to transfer data without cables. Analysis of double uslot cut rectangular microstrip antenna. The slot reduces the area of copper sheet which leads to less value of quality factor hence bandwidth increases. Pdf dualand tripleband uslot microstrip patch antenna. Once registered and logged in, you will be able to contribute to this site by submitting your own content or replying to existing content. Tiny microstrip antenna covers wlan, lte, and wimax. U slot patch antenna for broadband wireless communications m.
Multiband applications can be realized as a result of designing a double u slot rectangular patch antenna. The proposed triplelayer double u slot patch antenna is simulated in hfss solver and fabricated using thermolithography process. Microstrip patch antennas are strong candidates for use in many wireless communications applications. This paper presents a compact dual band rectangular microstrip patch antenna for wireless applications. Dual band double uslot loaded antenna with ground slot for. In, a double u slot microstrip patch array for wiwax application for enhancing the gain has been addressed. Structure in the ground plane of the microstrip patch antenna are used to achieve small size, multiband and high gain10. The antenna gives the first resonant frequency due to patch itself and small u slot. In this context, the present study investigated the possibility of designing.
Uslot microstrip antenna for amateur radio application. This paper presents the dual u slot hshaped microstrip patch antenna feed by transmission line. Patch antenna is actually a patch antenna placed over a antenna base. The slot antenna, consisting of a narrow slit in a ground plane, is a very versatile antenna. Introduction antenna, used for transmitting or receiving radio signals, is one of the most important parts of wireless communication system. The broadband characteristic of a microstrip patch antenna. The proposed antenna generates three resonant frequencies at 2. Its implementation is well done around the worldand share the market with wimax and lte for wireless communications. So for the antenna miniaturization i and bandwidth improvement bridged double u slot micro strip patch antenna. Detailed simulation and experimental investigation are conducted to understand the behavior of the two u. Double uslot microstrip patch antenna for wlan and. The upper patch is double u shaped slot loaded stacked patch and the lower patch is the h slot loaded fed patch.
Design and study of compact and wideband microstrip uslot. When a uslot is cut in the patch, a notch is introduced within the matching band, results in dualband antenna. Analysis of double ushaped slot loaded patch antenna for. Due to the presence of the stacked patch antenna, there are two resonances associated with the two resonators 12. Multiresonator design of rectangular microstrip antenna embedded with rectangular and half u slot is reported that yields bandwidth of 280 mhz 28%. This paper proposes the use of a patch antenna with two u shaped slots to achieve dual band operation. A microstirp patch antenna with double l slot for both wimax and wlan application is reported in. H 3 2 antenna basics an antenna is basically a conductor exposed in space. Jul 17, 2018 bibtex does not have the right entry for preprints. Design of triplelayer double uslot patch antenna for wireless. In this design two slots and one bridge elements have been applied to generate the three frequencies bands. Dual band double uslot loaded antenna with ground slot. A dual u slot h patch configuration is proposed to increase the narrow bandwidth, radiation efficiency and directivity. Index term double u slot, patch antenna, small antenna, u shape antenna, wimax antenna.
Further the second u slot optimizes the position and impedance at higher. In addition, the antenna has achievable return loss, radiation pattern and also bandwidths. A thick substrate helps broaden the individual bandwidths. 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 ushaped slot seldom exceeds 20% bw. Abstract this paper presents the numerical simulation of double uslots microstrip patch antenna for wimax application. The antenna configuration and details of the dimensions of the geometrical.
Uslot patch antenna has been reported recently for 5 ghz wlan 7, and also a monopole antenna for wimax applications was proposed in 8. A compact microstrip patch antenna with two u slots shape is presented. This directional antenna is a simple design with a gain of 4. The methods developed for efficient wideband patch antenna design are based on one or more of the following. In this paper, a modified double u slot planar microstrip antenna is designed, simulated and fabricated to operate at 2. A slot planar patch antenna is designed, simulated and fabricated to operate at 2.
Half u slot patch antenna with shorting wall reported in 8 with 28% impedance bandwidth. The analysis of dual band double u slot cut rectangular microstrip antenna is presented. It has a triple band of frequency the propose antenna 12for specific wimax application is shown below figure 6. It is seen that the applications which require dual frequency operation with small frequency ratio were designed by using the u slot in a wideband microstrip antenna 6. The u slot patch antenna was originally developed as a singlelayer, single patch wideband antenna. In microstrip antennas, embedded slots can also be used to enhance the impedance bandwidth of a single band antenna. Detailed simulation and experimental investigation are conducted to understand the behavior of the two u slots. Dual uslot microstrip patch antenna with enhanced bandwidth.
Double uslot rectangular patch antenna for multiband. The reported double u slot cut rectangular microstrip antenna yields dual and wide band operation in 2100 and 5400 mhz frequency bands. Abstract in this study, a 28ghz uslot rectangular microstrip patch antenna for 5g applications is proposed. Parametric studies of antenna structure with double. The required bandwidths are fulfilled the wimax technology 4. Double ushaped slots loaded stacked patch antenna for. If another uslot is cut in the same patch, antenna becomes a tripleband antenna.
A corporatefed hshapedpatch antenna with uirs for wifi. The slots cause the increase in inductance on the current path of the signal. Coaxial cable is mounted with patch as medium of power. Ata and mohammad salamin and khaleel abusabha, title design of multiband u slot microstrip patch antenna for gsm wlan and wimax applications, howpublished easychair preprint no. Low profile frequency reconfigurable triple band antenna. By introducing slot at an appropriate position on the rectangular patch, wider bandwidth has been realized. Design of multiband uslot microstrip patch antenna for. Simulation results place the hshaped patch antenna with double u slot in to it was achieved. A 28ghz uslot microstrip patch antenna for 5g applications. In this paper, microstrip patch antenna fed through an aperture coupled 50.
Design of triplelayer double uslot patch antenna for. Dual frequency operation is achieved by inserting a. Two u shaped slots reduce the overall impedance of antenna. It has been developed to be used in future wimax technology.
Dec 05, 2016 i built this slot antenna several years ago and have used it with very good results in illuminating a parabolic dish for 2. Slot loaded microstrip antenna for gps, wifi, and wimax. Pdf triple band double uslots patch antenna for wimax. The strong back radiation is a major disadvantage of a resonant slot aperture coupled patch antenna. What is the difference between slot antenna and patch antenna. International journal of computer applications 1626. Multiband uslot microstrip patch antenna with defective. Citeseerx document details isaac councill, lee giles, pradeep teregowda. The maximum back to front level was about 14 db at the frequency of 5. The consequences of designing indoor wireless systems with directional antennas at one or both ends of line of sight. Design of dual band aperture coupled microstrip antenna with u slot in this design u slot is cut in the patch and ground and dual band is obtained. Compact double uslots patch antenna for mobile wimax.
On the use of slots in the design of patch antennas. As a result triband response is achieved with gain reaching 0. It is observed from the extensive parametric study that the antenna possesses triple bands in most of the cases. The uniqueness of this design is that a double uslot patch is designed on a single substrate with single feed. When a u slot is cut in the patch, a notch is introduced within the matching band, results in dualband antenna. So could you tell me please what was wrong with the model and how to deal with the ar. Examples of cutting slots include probefed u slot patch antennas, double u slot patch antenna, double c patch antennas, and eshape patch antennas which provide excellent bandwidths. It has recently been shown that it can also be designed to perform a number of other functions. For the past decades, the microstrip, slot, and stacked patch antennas have been used to. In this paper, a single patch wideband microstrip antenna resonating at 4. In this paper, a double lslot microstrip patch antenna array using coplanar waveguide feed for wireless local area network wlan and worldwide interoperability for microwave access wimax. Dual frequency operation is achieved by introducing half u slot in a semicircular disk patch antenna 4. Adjustments to be made in antenna geometry to optimize the three different operating frequencies of 2. Microstrip patch with a dielectric cover is considered as a single patch with a semiinfinite superstore with re.
A multi 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. This paper presents the numerical simulation of double u slots microstrip patch antenna for wimax application. A low profile double uslots antenna for wimax operation has low return loss and bandwidth. A multiband triplelayer probe fed double uslot microstrip patch antenna for. Design of double uslot multiband microstrip patch antenna. Double uslots patch antenna for triband wireless systems. Double uslot microstrip patch antenna for wlan and wimax applications. Connected uslots patch antenna for wimax applications. If the length of the conductor is a certain ratio or multiple of the. Double lslot microstrip patch antenna array for wimax and.
Various parameters of the antenna are as shown below. Uslot dual band aperture coupled microstrip antenna for wlan. Modified double u slot penta band microstrip antenna for. A compact dual frequency double uslot rectangular microstrip patch. The antenna size had been reduced by 75% when compared to conventional antenna 7.
The broadband characteristic of a microstrip patch antenna with ushaped slot has been confirmed by many published results 24. The first u slot primarily optimizes the position of tm 01 and tm 20 modes of the patch to realize dual and wide frequency response in 2100 mhz frequency range. Double u slot patch antenna has been reported recently 9 for wimax applications. Recently, proposed printed antenna for wimax operation has the three frequencies bands but the return loss not over 30db 3. A novel hshaped patch antenna suitable for wireless and satellite communications is presented. Design structure of the single u slot patch w 40mm c1 5mm. The results of proposed antenna shows that by using proper slot size on patchs surface the performance of antenna can be improve. The uslot antenna concept has been used in patch antenna designed to reduce antenna size. Actually, slot antenna is a radiating element formed by a slot in a metallic surface. A multiband triplelayer probe fed double uslot microstrip patch antenna for next generation wireless applications is proposed in this paper.
Design of double uslot microstrip patch antenna array for. In order to increase the gain and transmit radiations over all frequency bands, the double lslot microstrip patch antenna array design has been extended for both wimax and wlan applications in. But when patch is loaded with yshaped slot along with ushaped slot placed asymmetrically to the patch center, the antenna resonates at 1. To increase the bandwidth of the antenna, a rectangular slot is inserted inside a ground plane. It has been demonstrated that the gain has increased considerably when compared to single patch 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. Design of multiband u slot microstrip patch antenna for gsm. In this paper, a multiband microstrip patch antenna with simple strip line feeding, which enables a handheld communicating device to. The fabricated antenna was installed on a networked wifi access point. Double uslot rectangular patch antenna for multiband applications. Several types of antennas are available in practical. For the past decades, the microstrip, slot, and stacked patch antennas have been used to implement multiband. The proposed design of the antenna is shown in fig. Broadband microstrip patch antenna using dual uslot with low profile has been proposed and analysis of results has been done by using ie3d simulator.
Also, several designs of broadband slots antenna have been reported 56. Simulation results in this section, the simulation and analysis is done for the proposed quadband u slot microstrip patch antenna by ansoft hfss simulation software. A dualband characteristic was obtained by using a double u slot in the patch. Index term double uslot, patch antenna, small antenna, ushape antenna, wimax antenna.
Design and analysis of compact u slot microstrip patch. Gsm, bluetooth, wlanwifi, wimax and some defence applications such as radio navigation. Parametric studies of antenna structure with double u slot. In fact i want to knowhow to plot axial ratio of a circularly polarized antenna vs frequency tha gragh is a cartesian one ar ffrequency.
In the present paper, a double u shaped slot loaded rectangular microstrip antenna is designed and analyzed. One of the main restrictions with patch antennas is their naturally narrowband performance due to its resonant nature. Figure 1 configuration of the double uslots patch antenna on a. The antenna gain was found to be about 8 db for the entire bandwidth. The radiation performance such as vswr, return loss, radiation pattern and gain of the antenna are simulated using ansoft hfss and presented. A multi uslot patch antenna has been reported recently for 5 ghz wlan 7, and a monopole antenna for wimax applications was proposed in 8. The proposed antenna is verified experimentally and the simulated and measured results are in good agreement. Bridged double uslot microstrip patch antenna for wireless. I tried your model but i cant get the same results. The variations in bridge gap optimize the antenna performance such as return loss and vswr. In particular, the u slot patch 1 enable a single patch single layer microstrip antenna to attain over 30% impedance bandwidth. The use of thick and low permittivity substrates is the main reason for achieving wide impedance bandwidth. This is a hack for producing the correct reference.
332 330 978 288 1324 1133 578 110 1513 552 455 203 865 79 85 1300 9 99 348 1441 248 1210 255 415 571 1471 792 162 784 1240 859 692 698 945 366 822 813 1301 1454 412 152 160 479 838 1039 1438 219 380 476 1085