The proposed antenna consists of a rectangular ground plane, a ushaped feed probe, and an hshaped slot radiating patch. In the proposed antenna design, a combination of dual u slot and multiple layers is used to. The proposed antenna consists of a microstrip patch with a ushaped slot that is fed by a broadband electromagnetic coupling probe, known as lprobe. The uslot patch antenna structure consists of a patch, ushaped slot, a ground plane and coaxial feed lines. Pdf design of double uslot multiband microstrip patch. Introduction to microstrip antennas university of houston. Balanis, antenna theory, 3rd edition, john wiley, new york. Uslot microstrip antenna for amateur radio application. The new antenna is a probefed rectangular microstrip patch antenna on a permittivity. First six characteristics modes of the probe fed uslot microstrip patch antenna at a frequency near the resonance of each mode 33 3. Geometry of proposed uslot circularly polarized microstrip patch antenna the antenna geometry is shown in figure 1. This paper presents the dual u slot hshaped microstrip patch. In this paper, a multiband microstrip patch antenna with simple strip line feeding, which enables a handheld communicating device to.
The schematic configuration of the microstrip patch antenna embedded with double lslot is shown in fig. The bandwidth of truncated rectangular microstrip patch antenna with h slot is 21. The designed patch antenna with double u slot had been given below figure figure 4. A novel hshaped patch antenna suitable for wireless and satellite communications is presented. The uslot microstrip patch antenna is designed at 2. A comparative analysis of a circularly polarized microstrip. Uslot patch antenna for broadband wireless communications.
Uslot patch antenna principle and design methodology. Return loss characteristics for single uslot figure 5. Abstract in this study, a 28ghz uslot rectangular microstrip patch antenna for 5g applications is proposed. The broadband characteristic of a microstrip patch antenna with ushaped slot has been confirmed by many published results 24.
The antenna consists of high and low dielectric constant material combinations thus the fabrication process of the antenna is much easier and much larger bandwidth of about 52. The uslot patch antenna was originally developed as a singlelayer, singlepatch wideband. In this paper, uslot micro strip patch antenna is proposed with dielectric substrate. It is found that the incorporation of a uslot in the patch can provide a flat input. In this paper, we propose a dualband microstrip patch antenna with ushaped slot fed by coaxial feeding technique. The patch antenna is realized on fr 4 substrate and having a. Antennas and propagation society and microwave theory and. Pdf design of uslot rectangular patch antenna for wireless. Approximate equations for the operating frequencies of a single u. Connected uslots patch antenna for wimax applications.
The basic design uses a rectangular uslot microstrip patch antenna on suitable microwave substrates 1. This is the design of microstrip antenna for wireless local area network. The difference between two microstrip patch antennas for energy harvesting system from surrounding rf signals. Uslot rectangular microstrip patch antenna for the application of wireless lan for next, the research focused on designing a lowprofile, broadband uslot aperstructure, opportunistic array, uslot, microstrip patch antenna, ballistic uslot patch antennas with. Radiation characteristics of the antenna and different methods for control of. Frequency reconfigurable uslot microstrip patch antenna. Design of uslot patch antenna and its geometry the uslot patch antenna produces a wideband beam. The coplanar waveguide cpw fed microstrip patch antenna considered in our work comprises of two rectangular patch elements each embedded on two lshaped slots. In this paper, an asymmetric uslot patch antenna with low probe diameter is. The proposed antenna consists of a rectangular ground plane, a u shaped feed probe, and an hshaped slot radiating patch. In this paper, we propose a dualband microstrip patch antenna with u shaped slot fed by coaxial feeding technique.
By using mathematical analysis we have designed the u slot microstrip antenna for amateur radio application which operates in the frequency band 5. Microstrip, multi frequency and uslot antennas, circular polarization, wideband system. 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. The patch lie in the xy plane over a large ground plane with substrate thickness h micro strip antenna. Microstrip patch antennas have become the favorite of antenna designers because of its versatility and advantages of planar profile, ease of fabrication, compatibility with integrated circuit technology, and conformability with a shaped surface. The designed dimensions of uslot patch antenna are given in.
Geometry of the proposed uslot micro strip antenna. Investigations on wideband uslot microstrip patch antenna. The multiband u slotted patch antennas are usually designed with complex feeding such as lprobe, mprobe feedings. Design and analysis of compact u slot microstrip patch antenna. Research article miniaturized wideband aperture coupled. Two modified designs are proposed to achieve a wide bandwidth operating in wideband communications. Return loss characteristics for single u slot figure 5. The patch antenna is realized on fr 4 substrate and having a relative permittivity. The uslot antenna concept has been used in patch antenna designed to reduce antenna size. In this paper, a single patch wideband microstrip antenna resonating at 4. The u slot antenna concept has been used in patch antenna designed to reduce antenna size. Two l slits are introduced on the right edge of the patch to study the effect of the slit on radiation.
Double lslot microstrip patch antenna array for wimax and. By using mathematical analysis we have designed the uslot microstrip antenna for amateur radio application which operates in the frequency band 5. Dual uslot microstrip patch antenna with enhanced bandwidth. This paper presents design and analysis of an efficient uslot rectangular microstrip patch antenna for the application of wireless lan for operating frequency 2. By adjusting the size of these structures, a dualband antenna can be obtained. Several approaches have been made to improve the bandwidth of the single layer patch antenna, such as use of a thick or foam substrate 12. 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 slot antenna, consisting of a narrow slit in a ground plane, is a very versatile antenna. Design and analysis of compact u slot microstrip patch. What is the difference between slot antenna and patch antenna.
The asymmetrical uslot antenna of parameters listed in table i has been fabricated and measured to compare the simulated results. Return losses for single u microstrip antenna slot the equations which is applicable to above is same for this type antenna is figure 6. Microstrip antenna, patch antenna, u slot loaded patch and dual band antenna. Design of dualband microstrip antenna with ushaped slot. The basic design uses a rectangular u slot microstrip patch antenna on suitable microwave substrates 1. Introduction microstrip antenna inherently has a low bandwidth that limits its application in practice.
Introduction the basic geometry of the u slot antenna is shown in figure 1. Microstrip, multi frequency and u slot antennas, circular polarization, wideband system. Quad band uslot microstrip antenna for c, x and ku band. Patch antenna is actually a patch antenna placed over a antenna base. Microstrip patch antennas world scientific publishing. Multi band uslot microstrip patch antenna for wlan and wimax. Uslot to realise wideband microstrip antenna msa has been widely reported 19. The measurements of the gain, directivity, and efficiency of the developed microstrip patch antenna are derived from highfrequency structure stimulator. In this study, properties of the uslot stacked patch antenna were investigated.
This paper presents multiband u slot rectifying antenna in rf energy harvesting system. The design employs thick substrate and h and u slot shape patches techniques to meet the design requirement. Many techniques have been proposed to design microstrip patch antennas with multiband characteristics. Design and analysis of microstrip patch antenna arrays. The dimensions of the radiating structures, patch width, slot length and the feed point position are chosen according to. Geometry of proposed u slot circularly polarized microstrip patch antenna the antenna geometry is shown in figure 1.
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. Introduction the basic geometry of the uslot antenna is shown in figure 1. Pdf this paper presents multiband u slot rectifying antenna in rf energy harvesting system. In this paper, we present a double l slot microstrip patch antenna array for worldwide interoperability for microwave access wimax and wireless local area network wlan applications. Design and study of compact and wideband microstrip uslot. Analysis of slotloaded rectangular microstrip patch antenna. In this article, a single layer linear uslot microstrip. On the use of slots in the design of patch antennas. A new dualband microstrip antenna with ushaped slot and a. Abstract this work presents two microstrip patch antennas in the lband with a u shaped slot cut into the radiating patch.
He invented the wideband uslot patch antenna and expanded the uslot technique to small size, dualtriple band, and circular polarization applications. This characteristic can be obtained by embedding a uslot in the patch and hence the radiating patch includes a pair of stepslots. The designed patch antenna with double uslot had been given below figure figure 4. In this paper, a novel compact dualband microstrip patch antenna with dualradiation modes is investigated. A new dualband microstrip antenna with ushaped slot and. The proposed structure is designed using cst microwave studio suite software. May 04, 2017 hfsss microstrip patch antenna design part1basics of antenna design using hfss software. Analysis of uslot loaded patch for dualband operation. The first modified design is by increasing the u slot. Uslot patch antenna for broadband wireless communications m. The basic principles are illustrated here for a rectangular patch, but the principles apply similarly for other patch shapes. In this paper, we present a new dual band planar antenna. The asymmetrical u slot antenna of parameters listed in table i has been fabricated and measured to compare the simulated results.
A 28ghz uslot microstrip patch antenna for 5g applications. Ushaped slot on the patch of the coaxially fed rectangular patch antenna. The effects of parameters of suspended structure on the antenna response have been investigated. The u slot patch antenna structure consists of a patch, u shaped slot, a ground plane and coaxial feed lines. Simulated results for u slot probe feed patch antenna is shown table 2. Pdf design of a multiband uslot microstrip patch antenna. Abstract this work presents two microstrip patch antennas in the lband with a ushaped slot cut into the radiating patch. The main advantage of u slot patch antenna is that it produces broadband characteristics with a single and simple topology. Pdf a new dualband microstrip antenna with ushaped slot. Variations of wide band eshape and uslot cut rectangular. Also, several designs of broadband slots antenna have been reported 56. Microstrip antennas suffer an inherent disadvantage of narrow impedance bandwidth, normally within 5%.
This type of antenna has attracted much attention the last 10 years, due to its wideband characteristics. Analysis and design of broadband uslot cut rectangular. Luk, a design theory on broadband patch antennas with slot, ieee. Hfsss microstrip patch antenna design part1basics of antenna design using hfss software. Microstrip patch antennae, microstrip dipoles, printed slot antennae. A practical miniaturized uslot patch antenna with enhanced. The basic u slot loaded rectangular micro strip patch antenna design is seen in. Ushaped slot on the patch of the coaxially fed rectangular patch antenna increase the bandwidth.
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 uslot patch antenna structure consists of a patch, u. The proposed antenna consists of a microstrip patch with a u shaped slot that is fed by a broadband electromagnetic coupling probe, known as lprobe. This characteristic can be obtained by embedding a u slot in the patch and hence the radiating patch includes a pair of stepslots.
In microstrip antennas, embedded slots can also be used to enhance the impedance bandwidth of a single band antenna. Hfsss microstrip patch antenna design part1basics of. Shivnara yan et al slot loaded rectangular microstrip patch antenna 425 the present work, the patch is fed by coaxial cable 50 ohm. In this paper, the slot antenna concept has been used in patch antenna designed. Pdf design of double uslot multiband microstrip patch antenna. Dualband slot microstrip patch antennas with dualradiation. We use the cavity model to explain the operation of the patch antenna. 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. Pdf a practical miniaturized uslot patch antenna with. Design and analysis of compact u slot microstrip patch antenna 9 figure 1.
Slot antenna differs with patch antenna in many aspects. A wideband linear uslot microstrip patch antenna array for wireless. This paper presents the dual u slot hshaped microstrip patch antenna feed by transmission line. Pdf advancements in high speed wlan technology demand antennas with high bandwidth, high gain and compact size. Uslot microstrip patch antennas were originally developed for bandwidth broadening applications. U slot patch antenna for broadband wireless communications m. Abstract in this study, a 28ghz u slot rectangular microstrip patch antenna for 5g applications is proposed. Richards, theory and experiment on microstrip antennas, ieee trans. Since the slot is thin, the voltage can be sinusoidal with zero voltage across the ends of slot. The patch antenna is constructed on same dielectric substrate. Advanced design and analysis of uwb uslot microstrip patch using theory of characteristic modes a dissertation in electrical and computer engineering and. Matin department of computer science and engineering brac university 66, mohakhali, dhaka 1212 bangladesh abstract.
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