Pattern reconfigurable antennas are usually designed using. A single microstrip feeding line is used to feed both patches. The antenna consists of a probefed circular patch, and a parasitic ring surrounding it. A pattern reconfigurable antenna array with two elements is designed in this paper. Design of frequency and patternreconfigurable wideband. Varying the patch size a reconfigurable monopolar patch antenna has been reported in 14, which capable to reconfigure up to eight different frequency bands using four pin diodes. Keywords reconfigurable microstrip patch antenna, slots, swi tches, dual band, resonant frequency. 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. In order to provide a dynamic response, reconfigurable antennas integrate an inner mechanism such as rf switches, varactors, mechanical actuators or. With a coaxial probe, two orthogonal resonant modes of the square patch antenna are simultaneously excited.
This article proposes a reconfigurable lowprofile monopolar antenna with tripleband independent tuning capability. The proposed antenna has two patches placed perpendicularly to each other. Wideband polarization reconfigurable circularly polarized. In 58, a patch antenna design with dualpattern frequencyreconfigurable characteristics was proposed. A new compact pattern reconfigurable antenna with enhanced bandwidth is presented. Reconfigurable koch loop fractal antenna using rf switch. Mar 12, 2019 this paper presents a wideband reconfigurable circularly polarized cp antenna with omnidirectional radiation pattern. A circular monopolar patch antenna, fed from center and surrounded by four sectorshaped patches, is presented in 2. By controlling the onoff states of the five pin diodes mounted on the arcshaped slot, the effective length of the arcshaped slot and the effective length of antennas current are changed, and accordingly six. Based on the proposed omnidirectional cp antenna, a polarization reconfigurable antenna was designed.
Eight varactor diodes are introduced to bridge the gaps between the circular patch and the sectorshaped patches. The gridded parasitic patch is formed by nine close coupled identical rectangular microstrip patches. Pattern reconfigurable antenna array for mimo application. Tripleband reconfigurable lowprofile monopolar antenna. Polarization reconfigurable wheelshaped antenna with. A reconfigurable monopolar patch antenna has been reported in 14, which capable to reconfigure up to eight different frequency bands using four pin diodes.
Luk, frequency reconfigurable lowprofile circular monopolar patch antenna. The silicon radiator is activated with the aid of highly dense solidstate plasma by injecting carriers into the. Pattern reconfigurable techniques for lp and cp antennas. A frequencyreconfigurable dualband lowprofile monopolar. Four open stubs are attached to the rectangular patch through four pin diodes, and the ability of switching the antenna operating frequency is achieved by using dual inline package switches to control the states of the diodes. First, a wideband monopolar patch and a lprobe fed patch were organically integrated together to achieve a wideband 2. Design of active reconfigurable wheel antenna based on pin. Typical half wave patches have efficiencies well above 90%. Pattern reconfigurable antenna using keyshaped monopoles. Frequencyreconfigurable lowprofile circular monopolar patch. A wideband circular monopolar patch surrounded by eight reconfigurable coupling loop stubs can generate conicalbeam radiation patterns with different polarizations. A pin diodebased multiband reconfigurable printed monopole antenna for.
Pin diodes are used to achieve the switching between the patches, resulting in. In this paper, a compact frequency reconfigurable circular patch antenna with an arcshaped slot loaded in the ground layer is proposed for multiband wireless communication applications. Reconfigurable monopolar patch antenna ieee xplore. The reconfigurable antenna is composed of a square radiating patch, four varactor diodes, and two lumped capacitors. Pattern reconfigurable antenna using keyshaped monopoles for wimax application sweta agarwal and manoj kumar meshram indian institute of technology bhu, varanasi mkmeshram. To achieve reconfigurability, the antenna requires the use of some rf switching devices, such. The antenna generated omnidirectional radiation patterns with a reduced height of 0. The reconfigurable antenna provides three radiationpattern modes by controlling the states of four mems switches. Switchable linearly polarized broadside and conical radiation patterns are achieved by systematically integrating a wideband lowprofile monopolar patch antenna with a wideband lprobe fed patch antenna. The basic configuration of the antenna consists of an elliptical radiating patch with a slot loaded partial rectangular ground plane. A wide range of frequency tunability was achieved in a probefeed patch antenna using voltagecontrolled varactor diodes 6. Frequency and pattern reconfigurable antenna for emerging.
Design and implementation of reconfigurable antenna. The uwb antenna is designed on an fr4 substrate with a thickness of 1. Design of a ka band microstrip patch antenna with pattern. The idea is to combine a broadband centerfed monopolar patch working as an electric dipole edipole and eight reconfigurable coupling loop stub radiators as the magnetic dipoles mdipole together to generate the reconfigurable. Patternreconfigurable planar circular ultrawideband monopole antenna. A patternreconfigurable slotaugmented patch antenna is reported that radiates circularly polarized cp fields and is switchable between a broadside and a conical radiating mode.
Microstrip antenna or patch antenna basics in antenna and wave. Frequencyreconfigurable microstrip patch antennas with. The proposed antenna has a rectangular patch with two shorting pins. 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 addition, the antenna yields narrow bandwidth with minimum variation in gain, hence used for 4g and 5g technologies. Frequency reconfigurable antenna for five bands using koch fractal patch is designed in 5, it has used slotted ground with complementary split ring resonator. In this paper, a new pattern reconfigurable microstrip uslot patch antenna using eight pin diodes is proposed. The pin diodes are used to connect main patch to four different sizes of small patches. For the new reconfigurable antenna array, the beam pattern selectivity can be obtained. Compact microstrip antenna with patternreconfigurable. Mechanically pattern reconfigurable antenna using metasurface.
The first part is a ushaped monopole antenna with ultrawideband uwb. A single probefed reconfigurable monopolar patch antenna with frequency diversity is presented. Frequency tunable microstrip patch antenna using rf mems technology. Reconfigurable beam steering using circular disc microstrip patch antenna with a ring slot is proposed. Ieee transactions on antennas and propagation,6212, 59925999. The antenna consists of two symmetric slots that are fed by a forkshaped microstrip line. Manikannan 1,2assistant professor, ck college of engineering and technology, cuddalore, tamil nadu abstract with the rapid advancement in wireless communication, reconfigurable antenna is gaining greater attention. This polarization reconfigurable characteristic is realized by controlling pin diodes on the coupling loop stubs. A novel pattern reconfigurable dipoleyagi antenna for wireless body area network wban. Frequencyreconfigurable lowprofile circular monopolar. Modeling of pin diode in hfss and frequency reconfigurable antenna. Moreover, the radiation patterns of the proposed antenna are stable in each operating band. This paper presents two pattern reconfigurable techniques to realize linear lp and circular cp broadside and conicalbeam switchable radiation patterns from a single antenna. New radiation patternreconfigurable 60ghz antenna for 5g.
A dualfrequency broadband design of coupledfed stacked microstrip monopolar patch antenna for wlan applications. A wideband circularmonopolar patch surrounded by eight reconfigurable coupling loop stubs can generate conicalbeam radiation patterns with different polarizations. As for the selection of the reconfiguration technique, it is based on the reconfigurable antenna property. Wideband patternreconfigurable antenna with switchable. A novel frequencyreconfigurable antenna is presented based on a circular monopolar patch antenna. Tripleband reconfigurable lowprofile monopolar antenna with independent tunability abstract. Forum for electromagnetic research methods and application. Researcharticle frequency reconfigurable circular patch antenna with an arcshaped slot ground controlled by pin diodes yaochen,1 longfangye,1 jianliangzhuo,1 yanhuiliu,1 liangzhang,1. The antenna structure has four shorting walls placed respectively at each edge of the squarering patch. In addition, the two modes are designed to resonate in similar frequency ranges. Each edge of the square patch is connected to two shorting posts via pin diodes. A reconfigurable antenna is an antenna capable of modifying its frequency and radiation.
A simple, low profile and pattern reconfigurable antenna with a fullground plane is presented for use in wireless body area networks at 5. For each case reflection coefficient is calculated, it maintains less than 10 db throughout the operating frequency. In addition, the antenna owns a lowprofile structure 0. Huang, reconfigurable monopolar patch antenna, electronic. Pattern reconfigurable techniques for lp and cp antennas with. Pattern reconfigurable wideband stacked microstrip patch. The antenna element is made up of a printed yagi and feed structure with variable phase. A new reconfigurable koch loop fractal antenna model has been proposed and its properties discussed using hfss software. The proposed antenna patch is a combination of two semicircular patches. The antenna structure has four shorting walls placed respectively at each edge of the squarering patch, in which two shorting walls are directly connected to the patch and the others are connected to the patch via pin diodes.
Eight varactor diodes are used to bridge the gaps between the. Design of reconfigurable microstrip patch antenna for wlan. Reconfigurable squarering patch antenna with pattern. The antenna has distinct monopolar and broadside radiation patterns at its lower and upper bands, respectively, and a previous realization only allowed simultaneous tuning of the. A simple design of circularlypolarized cp microstrip antennas with frequency agility is described.
Reconfigurable squarering patch antenna with pattern diversity. An electrically small cpw fed frequency reconfigurable. Microstrip monopolar patch antenna for bandwidth enhancement. Two pin diodes are loaded in the slots to produce two different frequency bands. Circularly polarized cshaped slot patch antenna with reconfigurable polarization ameelia roseline arulandhusamy 1.
Monopolelike and semidirectional reconfigurable pattern. A wideband, pattern reconfigurable antenna is reported that is, for example, a good candidate for ceilingmounted indoor wireless systems. This paper introduces a polarization reconfigurable wheelshaped antenna with wide bandwidth and conicalbeam radiation pattern. The top circular patch and the arcshaped slot on the ground plane of this arcshaped slot patch antenna are excited by the coaxial back feed to achieve antenna radiation. Frequency reconfigurable circular patch antenna with an. Dual feed pattern reconfigurable antenna for wireless.
This paper presents a wideband reconfigurable circularly polarized cp antenna with omnidirectional radiation pattern. Stable monopole like radiation patterns are achieved at all operating frequencies. In this paper, a compact frequency reconfigurable circular patch antenna with an. The basics of patch antennas, updated orban microwave. By introducing patches of koch loop shapes, the antenna with different radiation patterns.
The antenna is based on the concept of a centerfed patch with shortings to. Reconfigurable microstrip patch antenna for wlan software. In the following steps rectangular patch antenna design procedure is given after choosing the its essential parameters such as frequency of operation f r,dielectric constant of the substrate, height of dielectric substrate h. A novel pattern reconfigurable dipoleyagi antenna for. When the equivalent capacitance values of the varactors are increased. Moreover, the radiation patterns of the proposed antenna are stable in each. Omni directional antenna realized by dielectric resonator antenna dra with alford loop 1 and monopolar patch antenna with curved branches 2 lead to high return loss but have very less gain.
Flexible and compact spiralshaped frequency reconfigurable. By switching between the different states of the pin diodes, the proposed antenna can operate in either monopolar patch or normal patch mode in similar frequency ranges. The antenna provides radiation patterns with monopolar and broadside modes and its. The radiation patterns of the proposed antenna design were also measured in a fully calibrated anechoic chamber and plotted in fig. A compact uwb monopole patch antenna with reconfigurable. Survey on different types of reconfigurable patch antenna.
A low profile pattern reconfigurable antenna with enhanced. Reconfigurable antennas synthesis lectures on antennas. Reconfigurable monopolar patch antenna researchgate. Antennas reconfiguration is realized by inserting switches into spokes and peripheral regions of a wheel antenna. Proposed antennas structure is composed of two circular rings that are excited by multiple pin diodes and microstrip lines. The proposed frequency reconfigurable antenna is based on backfed circular patch antenna with an arcshaped slot length of 30.
A wideband slot antenna with frequency and patternreconfigurable characteristics for tdlte 3. In addition, we also introduce a wideband omnidirectional cp reconfigurable antenna with a conicalbeam pattern. A frequency reconfigurable dipole antenna based on a silicon radiator is presented. A patch antenna is shorted to the ground plane with thin wires, which is called monopolar wirepatch antenna is proposed in 2. The pattern reconfigurable metasurfaced parms antenna is composed of a planar semicircular ms placed directly atop of a planar circular patch antenna with a diameter of 70 mm 1. Eight shorting posts are implemented around the patch to change the operating mode of the antenna from monopolar patch mode to normal patch mode. The antenna comprises of a centerfed circular patch surrounded by four sectorshaped patches. Design and simulation of reconfigurable monopolar antenna. Frequency reconfigurable circular patch antenna with an arc. Frequency reconfigurable microstrip antenna for cognitive. A reconfigurable microstrip antenna presented in uses mems switches for pattern selectivity realization. Omnidirectional microstrip patch antenna with reconfigurable pattern and polarisation. In this paper, a printed patch antenna operating around 2. A frequency reconfigurable dipole antenna with solidstate.
A patch antenna is shorted to the ground plane with thin wires, which is called monopolar wire patch antenna is proposed in 2. If the antenna had a 100% radiation efficiency, all directivity would be converted to gain. Using four switches connecting adjacent parasitic patches in the grid, it is possible to realize a pattern. An electrically small cpw fed frequency reconfigurable antenna created date. Introduction reconfigurability has become a crucial feature in m odern wireless communication world. Design and simulation of reconfigurable monopolar antenna for. Survey on different types of reconfigurable patch antenna for. The patch version was figured using the first order koch loop. A beam shift method is presented for an aperture coupled stacked microstrip antenna with a gridded parasitic patch. This letter presents a novel microstrip patch antenna operating in the ka band 26. Survey on different types of reconfigurable patch antenna for wireless applications 1k. A reconfigurable antenna is an antenna capable of modifying its frequency and radiation properties dynamically, in a controlled and reversible manner.
An antenna can exhibit a reconfigurable frequency of operation, a reconfigurable radiation pattern, a reconfigurable polarization behavior, or a combination of any of these properties 1, 2. The antenna is provided with one circle patch, two arc patches and four parasitic rectangular patches. A singlefeed reconfigurable squarering patch antenna with pattern diversity is presented. Ashish kumar sahu is a record of an original research work carried out by his during 20142015 under my supervision and guidance in partial fulfilment of the requirement for the. Reconfigurable microstrip patch antenna a schematic view of the proposed antenna is plotted in figure 1. Polarization reconfigurable wheelshaped antenna with conical. Pattern reconfigurable self oscillating active integrated antenna with frequency agility. The antenna is based on the concept of a centerfed patch with shortings to achieve omnidirectional radiation patterns.
Pattern reconfigurable antennas are attractive in applications such as surveillance. A single probefed reconfigurable monopolar patch antenna with. Each of these patches is resonant at the antenna central frequency. The antenna structure has four shorting walls placed respectively at each edge of the squarering patch, in which two shorting walls are directly connected to the patch and the others are connected to the patch. The monopolar patch acts as the ground for the lprobe fed patch, which is fed with a coaxial cable that replaces one shorting via of the. Polarization reconfigurable antenna, circular patch.
However, the bandwidth of the proposed antenna is less than 3%. A flexible, spiralshaped frequency reconfigurable antenna with a compact size 20. A circular monopolar patch antenna, fed from center and. The antenna consists of a circular radiation patch, a circular feeding patch and five shorting posts in which four shoring posts are connected to the ground via pin diodes. In order to obtain polarization reconfigurability, several patch antenna configurations have been investigated 57. A radiation pattern reconfigurable antenna designed using metasurface ms is proposed in this study. The antenna is based on a shorted monopolar patch surrounded by multiple curved branches and it is proximity. An electrically small cpw fed frequency reconfigurable antenna.
The antenna is excited by a singlefeed and operates in sband and xband. In this paper we suggest a reconfigurable wheel antenna based on pin diodes. The reconfigurable antenna provides three radiation pattern modes by controlling the states of four mems switches. Abstract in this paper, omnidirectional pattern reconfigurable antenna is designed using keyshaped monopole antennas. An electronically reconfigurable patch antenna design for.
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