Design and analysis of compact u slot microstrip patch antenna the radiation patterns of an antenna provide the information that describes how the antenna directs the energy it radiates. An, a ushaped slot antenna for wlan and wimax applications, in 7th asia pacific international symposium on electromagnetic compatibility, 2016, pp. A wideband linear uslot microstrip patch antenna array for wireless. Dualband slot microstrip patch antennas with dualradiation. By adjusting the size of these structures, a dualband antenna can be obtained. Fundamental specifications of patch antennas radiation pattern a patch antenna radiates power in certain directions and we say that the antenna has directivity usually expressed in dbi. Multislot microstrip antenna for ultrawide band applications. The proposed antenna is feed by the transmission line. In this article, a single layer linear uslot microstrip patch antenna array is designed, fabr. Ata1, mohammad salamin2, khaleel abusabha3 1, 2, 3 electrical engineering dept. Design of a multiband uslot microstrip patch antenna. Typical half wave patches have efficiencies well above 90%.
Microstrip antenna is simulated by ansoft hfss software which has its operating frequency range 5. The bandwidth of truncated rectangular microstrip patch antenna with h slot is 21. A wideband differentialfed microstrip patch antenna based on. Keywordsduel u band, ushaped slot microstrip,rectangular. Hfss tutorial 2microstrip patch antenna with a cutting slot coaxial feed how to cut slot in patch duration. This paper proposes a microstrip patch antenna, with a ushaped patch with the diagonally cut partial ground plane. The gain and the radiation efficiency of the first band from 1. Designing multiple antennas using cst software and describe what happen in arabic for radiation pattern, s11 and design. As stated earlier, an antenna cannot radiate more total energy than is delivered to its input terminals.
The proposed antenna consists of a microstrip patch with a ushaped slot that is fed by a broadband electromagnetic coupling probe, known as lprobe. Uslot microstrip patch antenna for wireless application. Simulation results based on hfss package on return loss and e and hplane radiation patterns are provided. U slot patch antenna for broadband wireless communications m. Miniaturized wideband aperture coupled microstrip patch. By controlling the phase shift of applied currents through these probes, the antenna can be set to excite either the sum or the difference mode. Dual uslot loaded patch antenna with a modified lprobe feeding.
The aim of the project is to design u slot rectangular microstrip patch antenna and to study their radiation pattern, return loss, vswr, gain and directivity. Mar 24, 2017 hfss tutorial 2 microstrip patch antenna with a cutting slot coaxial feed how to cut slot in patch duration. Wideband radiation reconfigurable microstrip patch antenna loaded with two inverted u slots abstract. Matin department of computer science and engineering brac university 66, mohakhali, dhaka 1212 bangladesh abstract. A wideband rectangular microstrip patch antenna with reconfigurable radiation patterns is proposed in this paper, which contains two symmetrically inverted uslots, and incorporates two coaxial. A 28ghz uslot microstrip patch antenna for 5g applications. The basics of patch antennas, updated orban microwave. Modified double u slot penta band microstrip antenna for. Here rectangular patch and partial ground plane is used. The following image shows a microstrip or patch antenna. With proper dimensions for the second u slot bandwidth as high as 49. He invented the wideband uslot patch antenna and expanded the uslot technique to small size, dualtriple band, and circular polarization applications. The compact monopole patch antenna shows stable radiation pattern.
Antenna radiation patterns are simulated at one frequency, one polarization, and one. The coaxially fed uslot rectangular patch antenna has been pre sented in 4. Abstract in this study, a 28ghz uslot rectangular microstrip patch antenna for 5g applications is proposed. By the use of slot we can enhance bandwidth, gain e. The patch antenna is therefore a voltage radiator, as opposed to the wire antennas, which radiate because the currents add up in phase and are therefore. A single layer wideband uslot microstrip patch antenna array. When the antenna is excited, the waves generated within the dielectric undergo reflections and the energyis radiated from the edges of the metal patch,which is very low. Simulated results for u slot probe feed patch antenna is shown table 2. The varying width patches exhibit broadside radiation pattern with moderate increment in the values of broadside antenna gain. What is the difference between slot antenna and patch. The width of the microstrip patch antenna is given by equation 1. Pdf advancements in high speed wlan technology demand antennas with high bandwidth, high gain and compact size. A wideband single layer coaxially fed rectangular microstrip patch antenna with a double u slot on the patch is presented. Slot antenna differs with patch antenna in many aspects.
This may be replaced with a physical shorting plane to create a quarterwavelength microstrip antenna. Double lslot microstrip patch antenna array for wimax and. A wideband differentialfed microstrip patch antenna based on radiation of three resonant modes of tm 12, tm 30, and slot is proposed in this paper. In this paper, wide band truncated rectangular microstrip patch antenna with h and u slot is proposed. Pdf design of uslot rectangular patch antenna for wireless lan. A new microstrip fed triangular patch antenna for rfid applications with u slots has been presented in this paper. The antenna only has a single radiation edge equivalent slot which lowers the directivitygain of the antenna. Wide band dualbeam uslot microstrip antenna ieee journals. Introduction microstrip antennas are widely used in many applications.
Analysis and design of broadband single layer uslot. Wideband rectangular microstrip patch antenna with uslot. The polarisation of an antenna is determined by the wave radiated in a given direction that is identical to the direction of the electric field. The radiation patterns for the hu multislots antenna are presented in fig. The proposed antenna consists of a rectangular ground plane, a u shaped feed probe, and an hshaped slot radiating patch. The microstrip antenna s radiation arises from the fringing fields, which are due to the advantageous voltage distribution. If the antenna had a 100% radiation efficiency, all directivity would be converted to gain. Maximum in the direction of perpendicular to the strip antenna. Simulated results for u slot probe feed patch antenna patch. A wideband rectangular microstrip patch antenna with reconfigurable radiation patterns is proposed in this paper, which contains two symmetrically inverted uslots, and incorporates two coaxial probes along the resonant length of the patch.
In this paper we have seen the effect of slot on microstrip patch antenna. The design employs thick substrate and h and u slot shape patches techniques to meet the design requirement. This paper presents a microstrip antenna loaded with uslot. Since the current distribution in the array antenna is large when compared to single patch antenna, radiation from array antenna is more. In uslot cut msa, a patch is fed using coaxial feed, which is placed concentric with respect to the uslot, and the slot is cut in the patch centre. The uslot patch antenna structure consists of a patch, ushaped slot, a ground plane and coaxial feed lines. Variations of wide band eshape and uslot cut rectangular. In this paper, a novel compact dualband microstrip patch antenna with dualradiation modes is investigated. Analysis and design of broadband uslot cut rectangular.
Radiation efficiency depends on the current distribution. Design of slotted ground hexagonal microstrip patch antenna and gain improvement with fss screen. Design of the circular microstrip patch antenna for designing a circular microstrip patch antenna, the calculations are done as below 11. By using mathematical analysis we have designed the u slot microstrip antenna for amateur radio application which operates in the frequency band 5. In this paper, a novel compact dualband microstrip patch antenna with dual radiation modes is investigated.
Patch antenna is actually a patch antenna placed over a antenna base. As an example, a u slot patch antenna based on the. The fabricated prototype of double l slot microstrip patch antenna array is shown in fig. A wideband differentialfed microstrip patch antenna based. Uslot patch antenna how is uslot patch antenna abbreviated.
Broadening the antenna bandwidth is achieved by using the uslot technique. The halfwave rectangular microstrip antenna has a virtual shorting plane along its center. Enhanced bandwidth of uwb microstrip antenna using uslot and. Design and analysis of compact u slot microstrip patch. Axial ratio and radiation pattern is also improved. By the use of slot microstrip antenna can be used in many application. Radiation performance of the designed antenna is simulated using the hfss software. The uslot antenna concept has been used in patch antenna designed to reduce antenna size. Truncated rectangular microstrip antenna with h and u slot. Uslot patch antenna principle and design methodology. Ushaped microstrip patch antenna with partial ground. Jan 17, 2007 a low profile multiband u shaped aperturecoupled microstrip antenna with a coil in this article, an lshaped probefed, u slot patch antenna with a coil element is studied. Design of multiband uslot microstrip patch antenna for gsm. Pdf design of a multiband uslot microstrip patch antenna.
The optimum size of the proposed monopole antenna is 20201. Due to the compact area occupied, the proposed antenna is promising to be embedded within the different portable devices employing wimax applications. Unlike previous endeavors on uslot microstrip antennas, a wide impedance bandwidth of 68% is realized, along with stable polarization and. Firstly, two symmetrical rectangular slots are cut on the radiating patch where the zerocurrent position of the tm 30 mode excites another resonant slot mode. Kumar, quad bands ushaped slot loaded probe fed microstrip patch antenna, 2015 second int.
Uslot microstrip patch antenna for wireless application the versatile uslot patch antenna. Actually, slot antenna is a radiating element formed by a slot in a metallic surface. The uslot patch antenna structure consists of a patch, u. Design and analysis of compact u slot microstrip patch antenna 9 figure 1. The proposed antenna was designed and simulated with ie3d simulator which has resonant frequency of 0. Only a pair of sidelobes appear in the e plane radiation pattern.
A wide band dualbeam microstrip antenna is proposed in this communication. Microstrip patch antennae, microstrip dipoles, printed slot antennae. The design of inverted u slot aperture coupled wideband microstrip patch antenna is analyzed and discussed in this work. A wideband rectangular microstrip patch antenna with reconfigurable radiation patterns is proposed in this paper, which contains two symmetrically inverted u slots, and incorporates two coaxial. Uslot microstrip antenna for amateur radio application. The radiation pattern of microstrip or patch antenna is. 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. Design of multiband u slot microstrip patch antenna for gsm wlan and wimax applications osama w. The proposed antenna consists of a rectangular ground plane, a ushaped feed probe, and an hshaped slot radiating patch. Quad band uslot microstrip antenna for c, x and ku band. Abstract this paper presents the numerical simulation of double uslots microstrip patch antenna for wimax application. Compact double uslots patch antenna for mobile wimax.
What is the difference between slot antenna and patch antenna. Hfss tutorial 3microstrip patch antenna with a cutting u. Wide band dualbeam u slot microstrip antenna abstract. In this paper, a single patch wideband microstrip antenna resonating at 4.
Design and analysis of compact u slot microstrip patch antenna. The lshaped probe feed is used to enhance the impedance matching, which is necessary because of a low radiation resistance in the usable band. Apr 29, 2018 in 1 a symmetric type of this antenna with 30% theory on broadband patch antennas with slot, ieee antennas band uslot rectangular patch antenna on a microwave substrate. The metaferrite was optimized in order to obtain the magnetic responses at 9ghz, for its use as the substrate of a microstrip antenna. An ieee fellow, he was the recipient of the 2009 john kraus antenna award of the ieee antennas and propagation society for exceptional contributions to the field of antennas. Uslot to realise wideband microstrip antenna msa has been widely reported 19. A wideband rectangular microstrip patch antenna with reconfigurable radiation patterns is proposed in this paper, which contains two symmetrically inverted u slots, and incorporates two coaxial probes along the resonant length of the patch. The radiation pattern, beamwidth, directivity, return loss, vswr and bandwidth of the proposed antenna are described and simulated using hfss software. Wideband radiation reconfigurable microstrip patch antenna.
Two radiation beams off broadside are obtained by operating the patch antenna at the higher order tm 02 mode instead of the fundamental mode, which radiates a broadside beam. A triangular patch antenna for uhf band with microstrip feed. This u slot microstrip patch antenna is excited with transmission cables of respective length and width. By using the shorting pins or shorting walls on ushaped patch, uslot patch, or lprobe feed patch antennas, wideband and dual band antenna with electrically small in size have been reported in 8,9. A low profile multiband ushaped aperturecoupled microstrip. In addition, the slots length is enlarged to decrease the frequency of the slot. Length and width of the antenna can be predicted using the design equation. The measurements of the gain, directivity, and efficiency of the developed microstrip patch antenna are derived from highfrequency structure stimulator.
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