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