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