Due to adhesion, even when a patch antenna is not exactly horizontally oriented, a water layer is formed over the patch surface or over the radome. A seriesfed microstrip patch array with interconnecting crlh. Frequency reconfigurable patch antenna for l band applications. One can see from table 1 that the proposed antenna. Microstrip antenna wikimili, the best wikipedia reader. This antenna does not take any much extra size and can be etched on the same mobile pcb itself. Frequency reconfigurable tshaped microstrip patch antenna. The above equation says that the microstrip antenna should have a length equal to one half of a wavelength within the dielectric substrate medium. The antenna has applications in bluetooth, wimax, and wlan systems. The design of a reconfigurable dual frequency microstrip patch antenna using rf mems switches has been established and the minimum number of switches required has been determined. Tripathi abstractin this paper, a novel frequency recon.
Design simulation and fabrication of a dual band frequency. This calculator will help you to calculate the different wavelength of antennas based on the frequency. For simplicitys sake, i will talk about simple shortwave antennas. After finding the patch size the antenna feed line should be designed. Frequency reconfigurable microstrip circular patch antenna for wireless devices ghanshyam singh, mithilesh kumar abstract in this paper, a frequency reconfigurable circular antenna design and development is proposed for wireless devices.
Pdf on sep 1, 2015, babu lal sharma and others published design of frequency reconfigurable microstrip patch antenna for sband and. Design of frequency reconfigurable microstrip patch antenna. A wideband slot antenna with frequency and pattern reconfigurable characteristics for tdlte 3. Design of frequency and patternreconfigurable wideband slot. You can specify several namevalue pair arguments in any order as name1, value1. Top views of a 1x2 patch antenna array fabricated on a substrate. In this paper a frequency reconfigurable antenna with the circular patch is proposed, designed and simulated. The antenna operating frequency could be modified by activating the rf switches. By definition, a printed antenna is one that is fabricated using standard photolithography technique. If the ratio lw is close to unity, the radiation pattern will be symmetric but may not provide a resonable input impedance. Progress in electromagnetics research letters, vol. This letter presents frequencyreconfigurable microstrip patch antenna with three switchable modes.
Following equations or formula are used for this microstrip patch antenna calculator. Name is the property name and value is the corresponding value. Reconfigurable microstrip patch antenna for frequency. Design and analysis of a frequency reconfigurable microstrip. Reconfigurable microstrip patch antenna for frequency diversity using rf mems. If the dielectric constant of the material is not known, you can choose to put in the velocity of. Frequency reconfigurable microstrip patchslot antenna with. How to calculate the frequency of an antenna quora. Aces revised copy dual frequency microstrip patch antenna. The simulated results show the close agreement with proposed design.
Keywords reconfigurable microstrip patch antenna, slots, swi tches, dual band, resonant frequency. Microstrip patch antenna mpa for wireless communication. Single, dual and tripleband frequency reconfigurable antenna. The main category is antenna design calculators that is about antenna design calculators. P, india abstract here we made an attempt to maximize the gain of microstrip patch antenna. Deschamps in 1953, but didnt become practical until the 1970s when it was developed further by researchers such as robert e. It is found that the incorporation of a uslot in the patch can provide a flat input resistance and a linear input reactance. Three pairs of pindiode switches are placed across, the dipole arms. In the proposed design, a rectangular patch antenna with square slot using two pin diodes at the centre frequency 10 ghz was designed and simulated frequency reconfiguration is achieved in the. Design of frequency reconfigurable microstrip patch antenna for s. Frequency and pattern reconfigurable microstrip antenna are. Jan 22, 2020 the most common type of microstrip antenna is the patch antenna. The koch loop patches are connected by the rf switches. It consists of a flat rectangular sheet or patch of metal, mounted over a larger sheet of metal called a ground plane.
Reconfigurable triband hshaped antenna with frequency. In this design, it makes use of three patches with different shapes in order to tune for multiple frequencies. Click here to go to our page on circular patch antennas new for september 2018. A seriesfed microstrip patch array with interconnecting. Microstrip patch antenna calculator electrical engineering. The frequency of operation of the patch antenna of figure 1 is determined by the length l. Frequency reconfigurable circular patch antenna with an arc. It depends on the purpose and construction of an antenna. It is inversely proportional to the frequency which means the wave with higher frequency will have shorter wavelength. Click on calculate and the opposite value will be displayed in feet and inches or frequency in megahertz mhz.
They are the original type of microstrip antenna described by howell in 1972. The patchmicrostrip object is a microstrip patch antenna. For the purpose of reconfiguration, four rf switches r 1r 4 are used. Design strategy of uslot antenna the resonant frequency of the uslot is inversely proportional to the slot length 16. In this case, each vector starts at the origin and lies along the specified points on the x, y, and zaxes. Frequency reconfigurable uslot microstrip patch antenna. Examples of these electromagnetic waves include the light from the sun and the waves received by your cell phone or radio. A patch antenna is a narrowband, widebeam antenna fabricated by etching the antenna element pattern in metal trace bonded to an insulating dielectric substrate, such as a printed circuit board, with a continuous metal layer bonded to the opposite side. The proposed reconfigurable antenna has four patches designed to cover the frequency band from 1. There are 2pin diodes used in between the different slots to achieve frequency reconfigurability.
Design of frequency reconfigurable antenna with circular patch. The microstrip patch antenna calculator was used to provide an initial starting point of width w. Two pin diodes are loaded in the slots to produce two different frequency bands. This calculator is designed to give the vertical length height of a particular whip type antenna, or the frequency of it. A patch antenna is a type of radio antenna with a low profile, which can be mounted on a flat surface. Oct 22, 2017 how do i calculate the frequency of an antenna. Design of frequency reconfigurable microstrip patch. A reconfigurable antenna is an antenna capable of modifying its frequency and radiation properties dynamically, in a controlled and reversible manner. Threeelement vectors of cartesian coordinates in meters. Single fss frequency selective surface substrate is used to increase efficiency. Antennas using patches as constitutive elements in an array are also possible. Antenna switching between four frequency bands isra nazir, inam elahi rana, noor ul ain mir, and kanwal afreen abstractan e.
Majid1 1 utmmimos center, fakulti kejuruteraan elektrik, universiti teknologi malaysia, skudai, johor, malaysia 2 wireless. The patch with the line feeding adjust w for resonance at 7. Frequency reconfigurable microstrip patch antenna for. To achieve this we used microstrip circular patch antenna at 5.
Single, dual and tripleband frequency reconfigurable. Dipole antenna length calculator dipoles antennas are easy to build and can be very effective when placed half a wavelenth or more above ground. Reconfigurable koch loop fractal antenna using rf switch. Microstrip patch antenna calculator resource detail. Recent developments in the wireless communication industry continue to drive the. In this paper, frequency reconfigurable slotpatch antenna with reflector at the. Frequency reconfigurable microstrip circular patch antenna. In this paper, the authors present a frequency reconfigurable microstrip patch antenna. A frequency reconfigurable microstrip patch antenna is presented. Click on calculate and the opposite value will be displayed in feet and inches or. Pdf design of frequency reconfigurable microstrip patch antenna. Because water is a dielectric, its accumulation over the patch or the radome surface results in reduction of the resonant frequency 2. This link is listed in our web site directory since wednesday mar 29 2017, and till today microstrip patch antenna calculator has been followed for a total of 241 times.
Design of frequency reconfigurable patch antennas with defected. Frequency and pattern reconfigurable microstrip antenna are done by using. Introduction microstrip patch antenna arrays are currently used in satellite communications and wireless systems for their attractive. Properties not specified retain their default values. Enter the desired operating frequency in megahertz to get a good starting length for a dipole in both feet and meters. Compact, frequency reconfigurable, printed monopole antenna. Pdf design and analysis of frequency reconfigurable microstrip. Enter one only one value, the desired frequency or the antenna length in any length field. Analysis and design of circular microstrip patch antenna at 5. This calculator will help you to calculate the different wavelength of. In these frequencyreconfigurable antennas, the shapes of the radiation patterns. Design of a dualband frequency reconfigurable patch antenna. Microstrip patch antenna calculator patch antenna formula.
A frequency reconfigurable patch antenna design based on the characteristic mode analysis is presented. For example, frequency reconfigurable antennas are designed using rf mems switches 5,6. Microstrip patch antennas or simply patch antenna are increasingly useful because the antenna is printed directly onto a circuit board. Additional benefits of patch antennas is that they are easily fabricated. Listed under the antennas antenna calculators category that is about antenna design calculators. A novel design of a frequency reconfigurable patch antenna which has applications in the l band, namely, radars. A frequency reconfigurable antenna is presented with operating frequency as 3.
Microstrip patch antenna is used in mobile handset due to simple look, lower cost, small size and light in weight. In order to provide a dynamic response, reconfigurable antennas integrate an inner mechanism such as rf switches, varactors, mechanical actuators or tunable materials that enable the intentional redistribution of the rf currents over the. In this proposed work the frequency reconfigurable. While they microstrip patch antenna is designed for 7. Design and analysis of reconfigurable microstrip patch antenna. The shape and size of patch determine the frequency of. This tool is designed to calculate the correct dimensions of a microstrip patch antenna if the operating frequency and the dielectric constant of the material used, is known. In the proposed design, a circular patch antenna with circular slot using two pin diodes at the centre. A 100 mhz reference frequency source, locked to 10 mhz. Frequency is one of the most important concepts in the universe and to antenna theory, which we will see.
In these works, the operating frequency band is changed by activating or deactivating the rf mems actuators. Introduction microstrip patch antenna arrays are currently used in satel. A wideband slot antenna with frequency and patternreconfigurable characteristics for tdlte 3. Microstrip patch antenna calculator resource detail the. It is possible to reconfigure the operating frequency of the antenna, by altering the states of the. A microstrip patch antenna is one of the most popular microwave antennas. This paper presents a technique of microstrip patch antenna for sband and cband applications. Antennas function by transmitting or receiving electromagnetic em waves. Pasternacks microstrip patch antenna calculator determines the length and width in millimeters of a rectangular patch antenna.
Design of frequency reconfigurable patch antennas with defected ground structures using genetic algorithm. In 3, a novel 9shaped multiband frequency reconfigurable monopole an tenna for wireless applications, using 1. About microstrip patch antenna calculator the resource is currently listed in in a single category. The antenna consists of two symmetric slots that are fed by a forkshaped microstrip line. Since the two ends of the patch are open, an openend correction is usually taken into account while calculating the physical length l of the patch. The distance between one point to another adjacent point in a wave is known as the wavelength.
Antenna design calculators category is a curation of 83 web resources on, parallel square conductor transmission line calculator, analysis of antenna mast strength and bending stress, full wave loop antenna calculator. This paper proposes a new design for a frequency reconfigurable multiband antenna based around a slot dipole. However, they can be made a combination of both frequencies and pattern reconfigurable simultaneously. 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. In frequencyreconfigurable antenna, the frequency of the operation band can be tu nedswitched to different frequencie s, so the antenna is smaller than. Two antenna configurations that resonate at 8 ghz and 10 ghz have been designed and with a reconfigurable double stub tuner each has been implemented. Design of frequency reconfigurable microstrip patch antenna ieee. Parameters are set accordingly and results of microstrip patch antenna with fss layer and microstrip patch antenna without substrate later. Design of frequency and patternreconfigurable wideband. Jan 20, 2015 reconfigurable microstrip patch antenna for frequency diversity using rf mems. Abstractan effective design of a novel, compact, single feed, dual patch frequency reconfigurable.
Introduction reconfigurability has become a crucial feature in m odern wireless communication world. In this paper a yagi uda shaped frequency reconfigurable microstrip patch antenna is presented. The most common version of printed antenna is microstrip antenna, which consists of a metallic patch above a ground plane. Radiation and frequency reconfigurable antenna in general, most antennas are capable of either frequency or pattern reconfigurability.
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