In this paper, a new compact dualpolarized microstrip patch antenna is proposed. Vishvakarma, hshaped stacked patch antenna for dual bandoperation. The antenna consists of two layers with lower layer having the fed patch and the upper. Design of a dual patch triangular microstrip antenna. Understanding and optimizing microstrip patch antenna cross. The patch is of rectangular shape and fed by a gap between the patch edge and a. Pdf design and analysis of single and dual fed patch antenna array. In this work, a square siw cavity is concentrically embedded within a square patch radiator. Experimental study of stacked rectangular microstrip. In the following lines, a total number of 3 antenna structures are studied plus several other that will be just. Design of dualband metasurface antenna array using. The patch antenna, microstrip transmission line and ground plane are made of high conductivity metal typically copper.
Shaya karimkashi and guifu zhang,a dualpolarized seriesfed. Dual linearly polarized microstrip array antenna intechopen. A novel dualfeed slotcoupling feeding technique for. The novel design is achieved by etching out a symmetric pattern. The array antenna can excite both righthand circular polarization rhcp and lefthand circular polarization lhcp with using hybrid coupler is directly connected to microstrip. Unnecessarily complicated math is avoided throughout. The proposed antenna is fabricated and the measured results compare well with the theoretical as well as simulated results. A metasurface antenna array is proposed for the dualband operation.
The substrate used is rogers ro3003, which is a lossy substrate with a dielectric constant of and loss tangent. Patch antenna, dual band mspa, orthogonal polarization. Reduced size, dualpolarized microstrip patch antenna for wireless communications keyoor gosalia, student member, ieee, and gianluca lazzi, senior member, ieee abstract a novel, compact, probefed microstrip patch antenna for operation in dualpolarization mode is proposed. Another variant of patch antenna with the partially etched ground plane, also known as printed monopole antenna, is a very versatile antenna for dualband operations. A new circular polarization dual feed microstrip square patch. The proposed antenna is composed of a patch radiator and a substrate integrated waveguide siw cavity. From the figure it can be seen that with a decrease in the length of m4, the. This paper presents the design of a seriesfed microstrip patch antenna array to operate at the frequency of 3.
The distance between the patch and the ground plane the. Pdf design and development of dualspiral antenna for. Design and investigations of a microstrip fed open vshape. Their low profile design, often square or rectangular, allows them to be mounted to flat surfaces. Crosssection view of dual polarization probefed microstrip stacked patch antenna element. The theoretical investigations of fshape antenna parameters such as return loss, vswr, gain and efficiency have been calculated. Chapter 2 presents the basic theory of mpas, including the basic structures, feeding techniques and. This website is designed to present a comprehensive overview of antennas, from design, to measurement and theory. Dual band and dual polarized microstrip patch antenna. The objective of this paper is to design a miniaturized dualspiral antenna for implantable biomedical application in the frequency range 2. The designed antenna has a frequency bandwidth of 184 mhz with the upper cutoff frequency of 2. A broadband dualpolarized microstrip patch antenna with aperture. The antenna consists of miniaturization square patch and 3db hybrid coupler. Dual polarization stacked microstrip patch antenna array.
To improve the antenna bandwidth, two of the patches are modified with truncated corners in the diagonal direction. This proposed antenna is made by using the probe feeding and aperture coupled feeding methods. In this antenna, one corner of the patch or sometimes one edge is grounded with a ground pin. Braaten department of electrical and computer engineering north dakota state university fargo, nd, usa 58102. Design of dual band dual polarized microstrip patch antennas core. The gain of these antennas is between the ranges between 8dbi to 20dbi. This truncation generates two degenerate resonances which result in a flattened frequency response of the input impedance. Picture of the final design dual feed stacked patch antenna coupled through a.
The patch is of length l, width w, and sitting on top of a substrate some dielectric circuit board of thickness h with permittivity. A novel series fed microstrip patch array antenna for 3739 ghz beamforming is proposed. Analysis of fshape microstrip line fed dualband antenna. A square microstrip antenna fed to excite only one dominant mode tm 10 or tm 01 has a single resonance which may be modeled as this method. The rectangular microstrip antenna was measured using network analyzer agilent e8363b a. For the feed network, two transmission lines are used to connect the two edge feeds to an open circuit stub to match the antenna at the two frequencies. The antenna is designed and fabricated using fr4 substrate having a dielectric constant of 4. The aim of this research is to achieve smaller size, better bandwidth and good radiation capability.
Pdf compact dual band antenna design for ku ka band. The patch is of rectangular shape and fed by a gap between the patch edge and a microstrip open end. The basics of patch antennas, updated orban microwave. A low profile patch antenna for wlan application is proposed in this paper. A substrate integrated waveguide siw cavityfed slot is employed to excite the proposed metasurface at. Design and investigations of a microstrip fed open vshape slot antenna for wideband dual slant polarization. Introduction this article introduces the basic concepts of patch antennas. Then, the recessed microstrip feeds for the other two patches are. In this paper, a novel compact dualband microstrip patch antenna with dualradiation modes is investigated. We use a simple rectangular, half wave long, probefed patch operating in. The selected microstrip antenna is a dual fed circular polarized microstrip antenna. The patch is of length l, width w, and sitting on top of a substrate some dielectric circuit board. Reduced size, dualpolarized microstrip patch antenna for. An intuitive tutorial of antennas and antenna theory.
A seriesfed microstrip patch array with interconnecting. Dual uslot loaded patch antenna with a modified lprobe feeding. Additional benefits of patch antennas is that they are easily fabricated making them cost effective. Dual polarized phased array antennas for weather radar ap plication in dense. The signals from the antennas are combined or processed in order to achieve improved performance over that of a single antenna. Due to the rapid acceleration and evolution of the wireless communication and their equipment, integrating more services in the personal devices, personal digital assistance pda devices has to work in multiband frequencies. Design of dualfeed dualpolarized microstrip antenna with high isolation and low cross polarization kang luo, weiping ding, yongjin hu. The proposed antenna is suggested to be used in a mobile phone handset that covers four frequency. The selected microstrip antenna is a dualfed circular polarized microstrip antenna.
Figure 7 shows the geometry of the proposed reconfigurable dualband antenna. As the microstrip patch antenna consist of a ground a patch and a substrate. For obtaining the desired dualfrequency behavior the lower patch conductor of the coaxial feed is allowed to pass through a clearance hole in the lower patch and is then eclectically connected to the upper patch as shown in figure 1. Design of miniaturized dualband microstrip antenna for. In order to design a circular microstrip antenna for multiband applications suitable dielectric substrate of relative permittivity r4. The dual fed circular polarized microstrip antenna is etched on a fr4 with dielectric substrate of 4. Antenna arrays phased arrays an antenna array often called a phased array is a set of 2 or more antennas. Finally, e m simulation results of a 10 element seriesfed patch array antenna are given and compared to thetl model. The corner feeding of square microstrip patches is applied and the coupling aperture is the hshaped aperture.
By adjusting the size of these structures, a dualband antenna can be obtained. This figure represents the inset fed patch antenna which the arrangement of feed is. Seriesfed aperturecoupled microstrip antennas and arrays by bojana zivanovic a dissertation submitted in partial fulfillment of the requirements for the degree of doctor of philosophy department of electrical engineering college of engineering university of south florida major professor. The theoretical results are compared with the simulated data using concerto. From phased array antenna theory the co and xpol an. The antenna consists of circular patch and 3 db hybrid coupler. This is follo wed by the dualfrequenc y antenna design procedure along with a parametric study pointing out some limitations. Quadband duallayer microstrip antenna design for mobile. Second, suspended rectangular patch antenna and also circular patch antenna with segments removed for dual linear polarizationfrequency is demonstrated at kukbands. This antenna is often built of printed circuit board material and the substrate makes up the patch antenna s dielectric. A novel seriesfed microstrip patch array antenna for 3739 ghz beamforming is proposed. The antenna design consists of two patches interconnected with each other and meant for dual frequency operation with the outer patch resonates at 2.
Design of seriesfed bandwidthenhanced microstrip antenna. Microstrip patch antennas have become the favorite of antenna designers because of their versatility and having the advantages of planar profile, ease of fabrication, compatibility with integrated circuit technology, and conformability with a shaped surface. A parametric model of a skin, fat and muscle implantable antenna is designed and analysed their parameters such as return loss, impedance matching, gain, vswr and radiation patterns etc. Microstrip patch antennas or simply patch antenna are increasingly useful because the antenna is printed directly onto a circuit board. Basic geometry and basic characteristics of patch antennas 3. Polarization reconfigurable patch antennas with four polarization agility are investigated in this paper. The dual fed circular polarized microstrip antenna is etched on a. Dual band microstrip antenna designs which allow for independent frequency selection have the most design utility. Consider the microstrip antenna shown in figure 1, fed by a microstrip transmission line. In this paper, a new compact dual polarized microstrip patch antenna is proposed. Indeed, the opti mal antenna for a specific application is one that ensures the matching of the bandwidth of the transmitted andor the received signal. This communication proposes a compact 16 ghz 30 ghz dual band antenna design for ku ka band applications.
Wideband lowprofile differentialfed patch antennas with. An analysis of microstrip line fed antennas has been presented theoretically using circuit theory concept. A new circular polarization dual feed microstrip square. In this communication, a singlelayer differentially fed microstrip patch antenna mpa with wide bandwidth and low profile is proposed. The nearly square and corners truncated patches have a smaller 1 to 3% circular polarization bandwidth than the double fed patch at least 3%. By following these basic guidelines, this compact, lowcost, lightweight patch antenna can be matched to applications operating at both 1. It is shown that the separation height between the two patches plays a significant role in improving the impedance bandwidth of the antenna. The first antenna adopts microstrip line feeding, and the antenna radiation patch is composed of a folded tshaped radiating dipole which reduces the antenna size, and two symmetrical rectangular patches located on both sides of the tshaped radiating patch. Seriesfed aperturecoupled microstrip antennas and arrays. The best feeding point from the geometry of microstrip patch antenna we can understand that to couple the maximum energy to it the feed is provided beneath the ground directly see fig.
A lossless foam material is sandwiched between the two patches to provide a mechanically stable and uniform height. In this paper, a quadband, duallayer microstrip antenna was proposed. The proposed antenna consists of a rectangular ground plane, a ushaped feed probe, and an hshaped slot radiating patch. On the use of slots in the design of patch antennas. This variant has better matching than the standard patch. In this paper, we use a circular patch as the dualpolarized radiator. The second antenna is a microstrip patch antenna fed by coaxial line, and the size of. The antenna consists of square patch and 3 db hybrid coupler. Reconfigurable patch antennas with fourpolarization. The design graphs are then used to compute the dimensions of a rectangular patch and feed network for a dualfrequency antenna for use at 1. Dual feed microstrip patch antenna for wlan applications. Dualfrequency antennas exhibit a dualresonant behavior in a single radiating structure. The dualfed antenna can operates on two orthogonal linear polarizations simultaneously and on two orthogonal circular polarizations alternatively by. Chapter 2 theory and literature survey on microwave antennas this chapter is intended for presenting the research carried out to find a radiating structure that fulfils all the requirements.
224 750 234 1426 1483 768 161 467 1433 620 245 264 531 1365 783 161 880 552 1258 956 1068 383 492 179 391 980 404 977 1316 183 571 1334 1420 968 1008 1032 1198