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