We use cookies to offer you a better experience, personalize content, tailor advertising, provide social media features, and better understand the use of our services. The composite effect of stacked patch antenna and introducing the multiple shaped patch, offer a low profile, high gain, and compact. The printed planar antenna has gained the operating frequencies of 1. The use of two stacked patches instead of single patch helps in improving impedance bandwidth and gain of microstrip antenna as described in 4, 5. Where f and c are the resonant frequency in ghz and the light speed. Microstrip patch antenna is an important antenna above 1ghz in wireless communication. Multiple patch antennas on the same substrate see image called microstrip antennas, can be used to make high gain array antennas, and phased arrays in which the beam can be electronically steered. It is used in mobile, aircraft, satellite and medical applications. Bandwidth enhancement for thin substrate uhf rfid patch. This paper present design and simulation of e and s stacked microstrip patch antenna for overcome the limitation of bandwidth of the microstrip patch antenna and conclude that stacking.
Design of a multiband stacked microstrip patch antenna for satellite. Aggarwal department of electronics and communication engineering school of engineering, rk. The various element surfaces are spaced one from another and from the reference surface with a dielectric material and. Miniaturized circularly polarized stacked patch antenna on.
Review paper on gain enhancement of air filled stacked microstrip patch antenna mamata s. The stacked microstrip antenna has particular characteristics, such as a high gain or a wide bandwidth. The table has the values of return loss for different frequency. Multiforked, multislotted, impedance bandwidth, directivity gain, high. Multiforked microstrip patch antenna for broadband. Metamaterial enhances microstrip antenna gain microwaves.
Request pdf multifrequency microstrip path antenna using multiple stacked elements a multifrequency microstrip patch antenna comprised of a driven patch and a plurality of parasitic elements. Patil2 1student 2assistant professor 1,2department of electronics technology engineering 1,2shivaji university, kolhapur, maharashtra, india abstractthis paper gives an overview of design and. Return loss of the antenna the simulated radiation pattern and gain of. Electromagnetically coupled microstrip patch antennas for. A variety of techniques for modeling a multifrequency microstrip patch antenna were studied and discussed. Rectangular patch antennas are notoriously narrowband. The proposed antenna design has a unique structure. The shape and size of patch determine the frequency of. Gridded parasitic patch stacked microstrip antenna with. Sabban, a new broadband stacked twolayer microstrip antenna, ieee aps int.
Microstrip patch antennas are used for communication purposes especially in military and civil applications. It is further observed that the resonance frequency, gain and directivity are highly dependent on the thickness and permittivity of the upper substrate. When the size of the parasitic patch, is nearly equal to the fed patch and the distance between the fed patch and the parasitic patch is approximately 0. Gain and bandwidth improvement, effectof patch rotation. For a microstrip antenna to work, you want to think the opposite thoughts that you might want to think if you were designing a microstrip mmic. Effects of using different substrates on the performance. The effect of the air gap distance on the gain of the dual layer microstrip patch antenna at the desired frequency is shown in figure 4. Department of electronics and communication engineering national institute of technology, rourkela769008 certificate this is to certify that the thesis entitled, enhancement of bandwidth and. Properties of a basic microstrip patch a microstrip or patch antenna is a lowprofile antenna that has a number of advantages over other antennas. Planar multiresonators and stacked microstrip patch antenna techniques are combined to yield a wide bandwidth and higher gain.
A double layered stacked microstrip patch antenna with a single probe, feeding the lower patch, operated in the frequency range of 25 ghz is presented. It is observed that stacked patch the variation of length of the patch parasitic patch l 24. Theoretical analysis of linear array antenna of stacked. Theoretical analysis of linear array antenna of stacked patches.
The frequency of operation of the patch antenna of figure 1 is determined by the length l. The microstrip line is also a quarter wave transformer transforming the input impedance 50. Sometimes, in order to cover several operating frequencies, a broadband antenna solution is proposed 1. The proposed antenna will be useful for high gain systems requiring a broadband. The proposed antenna is the dual stacked microstrip patch antenna. From the comparison, it is clear that the design with liquid multiple splitring resonators loaded microstrip patch antenna has better gain response compared to copper multiple splitring resonators loaded microstrip patch antenna for every ring condition see table 7. Design of a multiband stacked microstrip patch antenna for satellite communications application by hadef ahmed alshamsi a thesis submitted in partial fulfillment of the. Parasitic resonator elements and slots with two switches are added to each patch in order to enhance and control the number of the resonant frequencies and bandwidths. Multiwideband antennas design can be achieved using a stacked configuration that increase number of resonant frequencies and enhance the gain and. The use of metamaterials in single or multiple layers has been shown to contribute a great deal to the design of a highgain microstrip antenna at 10. The values of air, in figure 4, represent the distance in mm between the twosubstrate layers. If the ratio lw is close to unity, the radiation pattern will be symmetric but may not provide a resonable input impedance.
P, india abstract here we made an attempt to maximize the gain of microstrip patch antenna. Analysis and design of circular microstrip patch antenna at 5. Comparing the bandwidth result from the single patch antenna of 80 mhz to the side parasitic patch antenna of 300mhz, therefore, the side parasitic patch antenna has improved the bandwidth up to 375%. The proposed model finds its applications such as high. Microstrip patch antennas or simply patch antenna are increasingly useful because the antenna is printed directly onto a circuit board. The behaviour mechanism of the stacked antenna is synthetically clarified for the first time by investigating the results calculated using the fdtd method. Simply microstrip patch antennas consist of a dielectric substrate on one side of a. To design our stacked microstrip patch antenna at around 2 ghz. Patch antenna can be designed on simulation software like hfss. They are usually employed at uhf and higher frequencies because the size of the antenna is directly tied to the wavelength at the resonant frequency. The reconfigurable stacked square microstrip patch antenna supports a right hand circular polarization with a good axial ratio which is suitable for satellite communication system. Both the proposed antennas show an omnidirectional radiation pattern at all three resonance frequencies in the xzplane with almost 0 dbi gain. While some special shapes such as bowtie, vivaldi antenna or spiral patterns have inbuilt multifrequency tendency.
Omnidirectional multiband stacked microstrip patch antenna with. In this paper, a design of a multiwideband compact microstrip patch antenna is presented in stacked configuration. Multifrequency microstrip path antenna using multiple stacked elements article in ieee microwave and wireless components letters 3. Performance enhancement of rectangular microstrip patch. Secondly, the microstrip antenna was designed to operate at 100 mhz, but it is resonant at approximately 96 mhz. In this paper, the design frequency and the thickness of the substrate were kept constant, while different substrate materials were used in the design of an inset fed rectangular patch antenna in other to study the effect of these substrate materials on the gain and radiation pattern of the. By definition, a printed antenna is one that is fabricated using standard photolithography technique. The proposed antenna is composed of a shorted circular patch fed by foldedpatch with a vshaped slot and two stacked circular patches. Gain and bandwidth improvement, effect of patch rotation. The cp radiation in dualbands is a result of two multilayered truncated corner stacked square patches, while the reactive impedance surface ris is used for antenna size miniaturization for the lower operating frequency band. A single patch antenna provides a maximum directive gain of around 69 dbi. If the antenna had a 100% radiation efficiency, all directivity would be converted to gain. Microstrip patch antenna design for ku band application vijaykumar v.
Multifrequency microstrip patch antenna using multiple stacked. First, the bandwidth of the patch antenna is very small. This paper demonstrates the development of insetfed rectangular microstrip patch antenna with doublep slots. The center frequency will be approximately given by. Introduction antenna is transition structure between free space and guided device coaxial line or a hollow pipe waveguide. The simulated results of the proposed model of antenna prove that the use of electromagnetic coupling enhances the value of reflection. The antenna consists of a probe fed patch and two layers of parasitic patches, four patches in each layer.
Thus the microstrip patch radiation intensity depends on what direction you are facing it from it has gain and directivity. Most easy and commonly used scheme is cutting of slots. Typical half wave patches have efficiencies well above 90%. This paper presents a probefed compact multiband microstrip patch antenna for wideband operation. A reconfigurable stacked microstrip patch antenna for. Review paper on gain enhancement of air filled stacked. The above equation says that the microstrip antenna should have a length equal to one half of a wavelength within the dielectric substrate medium. Microstrip antennas are relatively inexpensive to manufacture and design because of the simple 2dimensional physical geometry. In comparison with the conventional microstrip patch antenna, it is clear that there is an increment in the gain along the distance range from air 1 mm to air 6 mm. The most common version of printed antenna is microstrip antenna, which consists of a metallic patch above a ground plane. Stacked microstrip antenna for wideband and high gain.
A multiple resonance microstrip antenna radiator which includes a plurality of stacked electrically conductive element surfaces disposed above an electrically conductive reference surface with each element surface dimensioned so as to resonate at a different radio frequency. Although this technique is simple, radiation pattern and. A variant of the patch antenna commonly used in mobile phones is the shorted patch antenna, or planar invertedf antenna pifa. Stacked patch design at 2 ghz the focus of this paper is to design a recon. Frequencyreconfigurable stacked patch microstrip antenna. This thesis proposes a stacked microstrip patch antenna that can be used for satellite.
Mimo system consists of multiple number of antennas at transmitter and receiver which in turn offers high capacity to wireless system over a siso system. Multifrequency microstrip path antenna using multiple. Therefore, by applying the structure and concept from the single stacked patch microstrip antenna in 16, the 2 by 2 stacked patch microstrip array structure has been proposed a b c figure 2. Different dielectric materials affect the electrical characteristics of a patch antenna differently.
Their low profile design, often square or rectangular, allows them to be mounted to flat surfaces. High antenna gain is generally desirable for communications systems, whether terrestrial or based on satellites. A microstrip antenna stacked design is presented in 10. Chodavadiya department of electronics and communication engineering school of engineering, rk. The basics of patch antennas, updated orban microwave. A reconfigurable stacked microstrip patch antenna for satellite and. Dualband stacked rectangular microstrip antenna 167 the length of the rectangular patch driven patch l1 23. Additional benefits of patch antennas is that they are easily fabricated making them cost effective. The microstrip patch antenna calculator determines the length l and width w of a rectangular microstrip patch antenna for a given resonant frequency or vice versa. Design of a multiband stacked microstrip patch antenna for. In this paper a simple microstrip patch antenna is designed in cst microwave studio at a resonant frequency of 2. Based on the calculation, patch antennas length and width is found to be 100. Microstrip patch antenna design for ku band application.
Numerical investigation of liquid metamaterialbased. Bandwidth and gain enhancement of proximity coupled. A multiplefrequency stacked microstrip patch antenna structure is disclosed which provides substantially increased isolation between the multiple radiating elements and between the multiple feed elements. Us4070676a multiple resonance radio frequency microstrip. Multiband stacked microstrip patch antenna with wide.
Compact multiband stacked circular patch antenna for. Multiband stacked microstrip patch antenna with wide ground slot for wireless communications ankita. This paper proposes a compact microstrip patch antenna for operating in 2. With this reconfigurable antenna, multiple functions at multiple frequency bands with a single aperture is possible. A rectangular micro strip patch antenna has been investigated and its performance has been analyzed with the aid of an soft hfss. Stacked gapcoupled multiresonator rectangular microstrip. Key words microstrip antenna, multiband, stacked patch, wideband. Such design suffers from narrow bandwidths and low gain 68. In this paper, a conventional microstrip patch antenna, stacked patch antenna has been analyzed and simulated at terahertz frequency on two substrates having different dielectric permittivity values. Gain enhancement of a microstrip patch antenna using a. Microstrip antenna has advantage of low profile, easy fabrication, simple feeding and interfaced with other ics. 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.
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