The aim of this research is to achieve smaller size, better bandwidth and good radiation capability. The dual orthogonal linearly polarized mode is excited by two difierent feed mechanisms from a single circular radiating patch. The designed antenna has a frequency bandwidth of 184 mhz with the upper cutoff frequency of 2. In these antennas, an inphaseantiphase dual feed microstrip array antenna employing magict circuits is an essential element. In this paper, a new high gain inphaseantiphase dual feed microstrip array antenna is proposed and its performance is numerically evaluated using an electromagnetic simulation. It is usually used with a radio transmitter or radio receiver. Microstrip patch antennas represent one family of compact antennas that offer a conformal.
The simulated result of s11 scattering parameter return loss of single element triangular slot microstrip patch antenna is presented in figure 2. A broadband dual feed dual polarized microstrip antenna with low cross polarization and high isolation is presented. The center frequency is selected as the one at which the rl is minimum. Single layer dual band microstrip patch antenna using probe feed. Compact dual circularlypolarized microstrip antennas. Design of a rectangular microstrip patch antenna using. The dual fed circular polarized microstrip antenna is etched on a fr4 with dielectric substrate of 4. Easy to use in an array to increase the directivity. The stacked patch antenna array includes a ground plane 190 that is common to each planar patch array antenna.
The proposed antenna is capable of receiving both types of circular polarization signal. However, microstrip antennas inherently have narrow bandwidth. The antenna contains a rectangular patch with two rectangular slots positioned on the surface of the patch which is mounted upon a grounded substrate made of fr4 epoxy. Experimental study of stacked rectangular microstrip. Proposed antenna has two patches that are excited by two microstrip feeds to operate in frequency 3 to 20 ghz bands. The dual fed circular polarized microstrip antenna is etched on a fr4 with dielectric substrate of. In one hand, its lower operating frequency demonstrates high gain and on the other hand, the upper operating frequency shows circular polarization. Dual frequency antennas exhibit a dual resonant behavior.
He invented the wideband uslot patch antenna and expanded the uslot technique to small size, dual triple band, and circular polarization applications. In section 4, a dual frequency dual band microstrip antenna is designed, which is used to realize the dual band operation on the radiation side. For the construction of the antennas it has been used microstrip antenna technology, because it has been demonstrated that it is suitable for these applications due to their many advantages such as low profile and weight, easy integration with printed circuits. An electromagnetic simulation is shown by the circle marker.
A triangular patch antenna for uhf band with microstrip feed. Design of stacked microstrip dualband circular polarized. Dualband rhcp stacked microstrip antenna with top feed figure 2b. A stacked microstrip antenna for dual band cp antenna that is covering two gps bands has been introduced in 7. A dual band microstrip rectangular patch antenna for wlan in vehicular communication applications is proposed. In this work, a novel single feed stacked microstrip antenna is proposed for high gain and dual polarization application. Gain enhancement of a dual feed microstrip array antenna. Refer microstrip line basics and types and desgin of microstrip patch antenna for mobile for more information. Design of dual band circular polarization stacked microstrip.
Investigation of a novel dual band microstripwaveguide. In17 18 a cpw feed dual band fractal antenna structure is formed by inscribin g a hexagonal slot within a circle. Benefits or advantages of microstrip antenna following are the benefits or advantages of microstrip antenna. Introduction n antenna is an electrical device which converts electric power into radio waves, and vice versa. The selected microstrip antenna is a dual fed circular polarized 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. A microstrip or patch antenna is a lowprofile antenna that has a number of advantages. A novel feeding technique for a dual band microstrip patch antenna article pdf available in ieice transactions on communications 93b9. In this paper, first a compact shorted rectangular microstrip antenna is discussed. The dual patch aperture coupled microstrip antenna can fulfill all these criteria unlike other printed radiators. The proposed antenna is a simple structure of dimension 30. Probe feed microstrip patch antenna top view upper and side view lower fig.
Kawser abstract microstrip antennas are low in profile and light in weight and they are now developed for many applications. Ep2270924a1 compact single feed dualpolarized dual. W 4h key words microstrip antenna, notch antenna, dual band antenna, network analyzer 12r w zo for 1 4 h i. Design of miniaturized dualband microstrip antenna for wlan.
Pdf design of microstrip antenna with dual feed line for. The two arms of each bent slot have the same length and are perpendicular to each. A novel feeding technique for a dual band microstrip patch antenna. They operate at microwave frequencies where traditional antennas.
Broadband suspended dual feed microstrip antenna with feed network. The size of dual feed microstrip array antenna is 10 x 14 cm. It was invented to allow convenient integration of an antenna and other driving circuitry of a communication system on a common printedcircuit board or a semiconductor chip carver and mink, 1981. Wideband dual linear polarized microstrip patch antenna a thesis by christopher b. Radiation characteristics of the antenna and different methods for control of. The dual fed circular polarized microstrip antenna is etched on a fr4 with. Basically transmission line modelling approach has been used to model the antenna. Dualfeed circular polarization folded microstrip antenna. Broadband dual polarized spacefed antenna arrays with high.
Simons nasa glenn research center, dynacs engineering company, inc. Design simulation and fabrication of microstrip patch antenna. In this paper a simple but accurate design method from air gap aperture microstrip antenna is presented. A new circular polarization dual feed microstrip square patch.
Dual feed microstrip patch antenna for wlan applications. Easy to incorporate with other microstrip circuit elements and integrate into systems. The stacked patch antenna array 100 has a single planar patch antenna subarray 101, 150 disposed on opposite sides of a dielectric substrate. Design of miniaturized dualband microstrip antenna for. Various techniques can be used to increase the bw of. Antennas which do not protrude from a surface are very desirable for. The proposed design consists of two pairs of small parallel slots on the. The research article presents the design and performance of a planar microstrip line feed monopole antenna for ultrawide band uwb. Microstrip antenna an overview sciencedirect topics. In order to design a circular microstrip antenna for multiband applications suitable dielectric substrate of relative permittivity r4.
Chu school of electronic and information engineering south china university of technology guangzhou 510640, china abstracta compact single feed dual band circularly polarized cp microstrip antenna is evaluated numerically and experimentally. A simple design for singlefeed circularlypolarized microstrip. A dual polarized stacked patch antenna array 100 that operates at two different frequencies 320, 330. Pdf this paper proposes new design of square microstrip antenna with dual feed line for improving bandwidth and axial ratio at work. Pdf rectangular microstrip antenna for dualband operation. Singlefeed dualpolarized high gain microstrip antenna. The bandwidth bw of a rectangular microstrip antenna rmsa with a single feed is usually small. The feed position of a patch antenna excited in its fundamental mode is typically located. The cp antennas are classified as a single feed type or dual feeds type depending on the number of feed point.
In this paper, a novel compact dual band microstrip patch antenna with dual radiation modes is investigated. Design of dual band dual polarized microstrip patch antennas core. This antenna can be used in many modern wireless communication systems like its, wlan, wimax, direct broadcast satellite etc. Advantages and disadvantages of microstrip patch antenna. The antenna has been designed, modelled and simulated. Circular polarization dual feed microstrip patch antenna with 3db hybrid coupler for wlan 2. Transmission line model of dual patch aperture coupled. E electronics and communication psg institute of technology and applied research. Design and fabrication of dual band patch antennas. References 1 garg r, bhartia p, bahl i and ittipiboon a, microstrip antenna hand book artech house, boston 2001. The dualorthogonal linearly polarized mode is excited by two di. Abstracta broadband dual feed dual polarized microstrip antenna with low cross polarization and high isolation is presented. The main difficulty of the microstrip antenna is its narrow bandwidth.
The paper demonstrates suspended rectangular and circular patch antennas with elctromagnetically coupled inverted microstrip feed for linear as well as dual. Pdf design and analysis of single and dual fed patch antenna array. Dual feed microstrip patch antenna for wlan applications doi. Also called patch antennas one of the most useful antennas at microwave frequencies f 1 ghz.
Dual band and dual polarized microstrip patch antenna. Investigation of a novel dual band microstripwaveguide hybrid antenna element mohammad t. A dualband slotembedded microstrip antenna for dual. Through optimizing the size of ground plane and the. Design of striplinefed dual polarization aperturecoupled stacked microstrip patch phased array antenna for wideband application. Oct 17, 2018 a dual band microstrip rectangular patch antenna for wlan in vehicular communication applications is proposed. A triangular patch antenna for uhf band with microstrip feed line for rfid applications twinkle kundu1 and davinder parkash2 1m. Coplanar waveguide feed advantages easy impedance matching planer structure low radiationdispersion losses easy integration in mmics figure 2 coplanar waveguide feed 2 2. In this paper first, suspended rectangular and also circular patch antennas with electromagnetically coupled inverted microstrip feed. Another hexagonal fractal microstrip antenna where iterations of hexagonal slot inside a hexagonal patch with multiband and broad band characteristics has been demonstrated in.
In this paper, we present a new dual band planar antenna. Experimental study of stacked rectangular microstrip antenna for dual band. Pdf design of a dual band rectangular microstrip antenna. The proposed antenna consists of a rectangular ground plane, a ushaped feed probe, and an hshaped slot radiating patch. A slotloaded square patch with two feeding points has been. The insetfed microstrip antenna provides impedance control with a planar feed configuration. In this paper a8shaped slot microstrip patch antenna is demonstrated.
A suspended patch antenna excited by an electromagnetically coupled inverted microstrip feed at sband frequency has been demonstrated in 5. A new circular polarization dual feed microstrip square patch antenna using branch coupler feeds for. Alternatively, an offset feed line or a 3db branch line coupler can be used, but it increases the overall size of the antenna. Compact coplanar dualband microstrip patch antennas for.
One of the two modes is excited by a pair of lshaped probes with a 180 phase. Dual band microstrip patch antenna for sar applications. Hussein, and argy petros, senior member, ieee abstracta vhf microstrip patch antenna was developed to. However, in a practical device the amplitude balance is. Dual band david fractal microstrip patch antenna for gsm and. Compact dualpolarized microstrip antenna structure and results figure 1 shows the geometry of the compact dualpolarized square patch microstrip antenna with four bent slots parallel to the patchs central lines 1. Furthermore, a proposed antenna has several advantages which are appropriate for edge of blade on plane or miniaturized. Design of single feed dual band dual polarized microstrip antenna with defected ground structure for aeronautical and radio navigation applications p. The proposed antenna consists of a microstrip patch with a ushaped slot that is fed by a broadband electromagnetic coupling probe, known as lprobe. Abstracta broadband dualfeed dualpolarized microstrip antenna with low cross polarization and high isolation is presented. Design and analysis of dual feed 8shaped microstrip patch antenna akanksha gupta1, 2archana sharma 1department of electronics and communication engineering, rits bhopal, india 2department of electronics and communication engineering, rits bhopal, india abstract. The dual band antenna is realized by placing the stub on the edges of the patch. Dualband rhcp stacked microstrip antenna with bottom feed description of the two new coplanar antenna designs. The 4 element array achieves bandwidth of 14% with isolation.
Pdf harmonics suppression singlefed dualcircularly. A broadband dual polarized microstrip antenna array with slot coupled feed and microstrip line feed for two polarizations is proposed in 15. Design of stacked microstrip dual band circular polarized antenna norhanani zakaria 1, sharul kamal abdul rahim 1. A new circular polarization cp design for singlefeed microstrip antennas is presented and experimentally. Design, implementation and experimental comparison. Kai chang recent days, antennas play an important role in wireless communication system. In this paper, the dual feed circular polarization folded microstrip antenna for gps global position system is being suggested as a developed antenna which could have a broader 3 db beam width of axial ratio than planar type such as microstrip patch antennas. Single layer dual band microstrip patch antenna using. Figures 3a and 3b show the crosssection of the two new dualband microstrip antenna designs described in. Design of single feed dual band dual polarized microstrip. We use a simple rectangular, half wave long, probefed patch operating in its fundamental mode as an example.
Patterns are somewhat hemispherical, with a moderate directivity about 68 db is typical. This thesis involves the design and analysis of dual band microstrip patch antenna which operates at lower and upper resonating frequency of 3. In this paper dualband microstrip antenna for global positioning system gps application is. The antenna consists of square patch and 3 db hybrid coupler. The basics of patch antennas, updated orban microwave. The patch may be in a variety of shapes, but rectangular and circular are the most common. The structure of the micro strip patch antenna consists of a thin square patch on one side of a dielectric substrate.
Introduction to microstrip antennas university of houston. In this paper we discuss the microstrip antenna, types of microstrip antenna, feeding techniques and application of microstrip patch antenna with their advantage and disadvantages and the benefits of using slots. Introduction this article introduces the basic concepts of patch antennas. Size reduction is achieved by meandering current path through four bent slots embedded in the patch antenna and by increasing substrates permittivity. Without the complexities inherent in dualfeed devices, the sin. 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. Design and analysis of microstrip patch antenna arrays. Pdf a new dualband microstrip antenna with ushaped.
Pdf a novel feeding technique for a dual band microstrip. Dual frequency microstrip antennas with a single feed are required in various radar and communication systems, such as global positioning system gps, wimax,wlan etc1. Design and analysis of dual feed 8shaped microstrip patch. A broadband dual band printed antenna for wlan is designed in section 3.
From figure 3 the value of vswr is within 1 to 2 in the operating range i. In the given paper a microstrip rectangular patch antenna is designed for dual frequency band applications in the ism band and wimax band. Dual band microstrip antenna for wireless lan application. This paper presents compact operations for microstrip antennas. The microstrip antenna is a relatively modern invention. Microstrip patch antenna elements with a single feed are used in many popular for various radar and. In the case of a dual feed circularly polarized6 microstrip antennas, an external power divider with quadrature phase difference is required to generate the two orthogonal modes. Chapter 2 presents the basic theory of mpas, including the basic structures, feeding techniques and. Further a dual band antenna realized by placing the stub on the opposite edge of the shorted rectangular patch, is proposed. This paper presents a novel design of a harmonic suppression singlefed dual circularly polarized microstrip patch antenna for a rectenna system in the future wireless power transmission application. It usually consists of a metal patch on top of a grounded dielectric substrate. By adjusting the size of these structures, a dual band antenna can be obtained. Inverted microstrip feed for dual polarizationfrequency rainee n. The antenna consists of circular patch and 3 db hybrid coupler.
Rhcp and lhcp simultaneously and at the same time it also able to filter the unwanted harmonic signals. One of the two modes is excited by a pair of lshaped probes with a 180 phase difierences, and the other is excited by an hshaped aperture. Kartikeyan3 millimeter wave laboratory, department of electronics and computer engineering, indian institute of technology, roorkee247667, india1,2,3. Design of a dualband microstrip patch antenna for gps. This paper also compares the characteristics of single feed and dual feed microstrip array antennas to get optimum feeding system. Dual frequency rectangular microstrip antenna page 5 1. Design of a dual band rectangular microstrip antenna. A triangular patch antenna for uhf band with microstrip. Compact dual feed dual polarized and circularpolarized microstrip square patch antennas are depicted. The dual band operation of air gap aperture coupled microstrip antenna are useful in many application such as dual band transmit receive models for space. International journal of computer applications 0975 8887 volume 92 no. The dual orthogonal linearly polarized mode is excited by two di. Dual band microstrip antenna for wifi applications atchay jahanath s b.
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