Pier c online widenarrow switchable bands microstrip. The rejection mechanism is realised by etching one symmetric folded slot on the ushaped radiation patch and the essence of the reconfigurable function is achieved by laser controlling photoconductive switches to change the. The optical switches are made by placing silicon wafers over. The author presented the techniques of using slots and.
Wideband microstrip patch antenna design for breast cancer. Modeling, control, and optimization of reconfigurable antennas. Coaxial feed line is used with the patch antenna and results are carried loop antenna and rectifier design for rf energy harvesting at 900mhz. Reconfigurable circular ring patch antenna for uwb and cognitive radio applications. Reconfigurable notch band antenna for uwb application. The design issues include microstrip antenna dimensions, feeding techniques and various polarization mechanisms whereas the performance issues include gain enhancement, bandwidth issues and reconfigurable microstrip antennas. New frequencyreconfigurable microstrip antenna composed. Compact uwb monopole antenna with reconfigurable band. The use of two tuning stubs allows independent adjustment of the effective patch length and the effective position of the feed point. Pdf optically controlled reconfigurable antenna array based on. The authors used the idea of shortening the slot inside the antenna patch in order to change the. It consists of one tshape driven patch and one slotetched parasitic patch.
In effect, this configuration is an optically controlled attenuatorbuilt into thepatchelement. Frequency reconfigurable patch antenna with bias tee for. Sarang pendharker assistant professor indian institute. This paper presents a new optically controlled reconfigurable ultrawideband antenna using reconfigurable optical router with photonic crystal substrate. Optically controlled frequencyreconfigurable microstrip antenna with low photoconductivity. In this paper microstrip patch antenna is designed for ultra wide band application. Optically controlled reconfigurable filtenna hindawi. A frequency reconfigurable printed microstripfed patch antenna is proposed here. This work presents the development of optically controlled reconfigurable antenna arrays. One such reconfigurable patch antenna with coplanar feed, using su8 substrate, is presented in. Optically controlled frequency recon gurable microstrip antennas are presented in 26,27. Cn102306870a ultra wide band antenna with reconfigurable. Optically controlled photo conductive switches also.
Silva et al 8 worked for optically controlled filtenna. Optically controlled reconfigurable antenna arrays ocraas are typically. It consists of a main rectangular patch made from a pec that is 58. The radiating element of the designed antenna is printed on the lossy fr4 substrate having relative permittivity. The proposed antenna has four photoconductive switches. A bandpass rf filter based on the defected microstrip structure dms technique 15. Design of reconfigurable notch band antenna for uwb. Research article optically controlled reconfigurable filtenna.
The main objective of this paper is to discuss the design and performance issues of microstrip antennas. The substrate is a slab of optically transparent fused quartz with er 3. International journal of advanced research in electronics and communication engineering ijarece. Measured radiation patterns for patch antennas using ideal switch states agree with hfss simulations. Typically, a reconfigurable patch antenna consists of a number of. A frequency reconfigurable rotatable antenna design for. A reconfigurable wideband and multiband cslot patch antenna with dual patch elements is proposed and studied. An optically controlled frequency reconfigurable microstrip antenna was implemented in 2. Chandorkar, optically controlled frequency reconfigurable microstrip antenna with low photoconductivity, ieee antenna and wireless propagation letters, vol. The antenna is shown by means of previously unpublished simulation and practical measurements to possess a wide input bandwidth, radiation patterns that remain largely consistent over the band of interest and a good fronttoback ratio. A microstrip patch antenna operating in 5 ghz range is presented in 28 where tuning was achieved. In this letter, a survey of different recent state of the art techniques that have been deployed in the design of antennas that can perform excellently for cognitive radio application is carried out.
Pdf optically controlled circular microstrip antenna. Research article lowpower optically controlled patch antenna of reconfigurable beams deshuangzhao,yifeihan,fengliang,qiaolizhang,andbingzhongwang school of physical electronics, university of electronic science and technology of china, chengdu, china correspondence should be addressed to d eshuang zhao. Reconfigurable micro strip patch antenna using single. Rajasekar, mems reconfigurable slotted microstrip patch antenna for cognitive radio application, 2016 online international conference on green engineering and. Tuning stubs for microstrippatch antennas semantic scholar. Pdf an optically controlled microstrip patch antenna is presented by exploring the phase changes of the parasitic element to generate. In order to expand the bandwidth, a higher order em mode patch antenna is presented in. According to the incident light, the physical properties of these switches can be changed from an insulator state off state to a nearconducting. In order to achieve reconfigurable characteristic, a pin diode is. A simple frequency reconfigurable microstrip patch antenna for multiband. A patch antenna was designed using hfss software and it has been tested using vna. Lowpower optically controlled patch antenna of reconfigurable.
Electronics free fulltext design and development of. Design and performance issues of microstrip antennas. Behavior of the antenna under different light intensities is investigated and compared to a reference copper antenna. Rapid growth in the area of modern wireless communication systems has led to demand for multimode reconfigurable antennas to be used in various wireless services 1,2. Optically controlled frequency reconfigurable microstrip antennas are presented in 26, 27. This paper presents the idea of recent developments and advancements in the field of wireless technology to realize high speed communications which is performe. Optically controlled frequencyreconfigurable microstrip antenna with low photoconductivity abstract. The narrow band antenna is a microstrip patch is printed on the reverse side of the substrate and it operates from 5. A practical method for the simultaneous tuning, of both the resonant frequency and reflection coefficient, of a coaxially fed rectangularmicrostrip patch is described. In this paper, a novel frequency reconfigurable microstrip antenna is presented. Beam reconfigurable microstrip antenna using photoinduced parasitic elements ieee ipc 20 september 1, 20 this paper presents a novel approach for. Opticallycontrolled reconfigurable microstrip patch antenna. In a transceiver system, the antenna is the final block in the transmission region and is the first block in the receiving region so, the fundamental understanding of antenna parameter and working are prerequisite to develop an antenna solution for smart systems so, in this chapter basics of microstrip patch antenna are elaborated to define the. The antenna comprises a medium board, a micro band feeder, a transition micro band, a switch controller, a printed monopole which is positioned on the upper surface of the medium board, and a feeder grounding board which is positioned on the lower surface of the.
A silicon dice is employed as the photoconductive switch that is bridged across the slot center for optical control of reconfigurable beams. Cognitive radio system fundamentals and antenna requirements for its smooth operations are also discussed. Design of a frequency reconfigurable microstrip patch antenna for. Nevertheless,multilayerantennassu erfromhigh dimensions, which can limit some applications. The antenna is a slot loaded microstrip patch and the effect of illumination is shown to produce beam switching in the radiation patterns of certain modes while other modes are left unaffected. A microstrip patch antenna formed by using a microelectromechanical system technology is included.
Abstract a frequency reconfigurable microstrip patch antenna is presented in this paper. This work is regarding the development of a novel antenna called optically controlled reconfigurable filtenna, which is based on the integration of a broadband printed antenna with a bandpass reconfigurable rf filter. Optically controlled frequency reconfigurable microstrip antenna with low photoconductivity abstract. In proceedings of the 8th european conference on antennas and propagation eucap 2014 pp. They are based on two patch elements with eshaped slots, a printed probe, and a photoconductive switch. The design being narrow band partially covers ieee 802.
The performance of the antennas designed by various techniques in terms of, the radiation. A novel compact beamreconfigurable patch antenna based on light control of no more than 30 mw optical powers is successfully demonstrated. Abstract an optically controlled microstrip patch antenna is presented by exploring the phase changes of the parasitic element to generate reconfigurable null beams. Reconfigurable antenna technology frequency reconfigurable antennas are implemented utilizing pin diodes, varactor diodes, fets and.
A simple frequency reconfigurable microstrip patch antenna for. The structural dimensions and geometry of the proposed hexaband frequency reconfigurable antenna for umts, wifi, wimax, wlan, radio altimeter, and fixed mobile communication applications is presented in fig. The effective length determines the resonant frequency of the patch, while the effective. The structure is specifically designed to make the best use of currently available miniature laser sources to form a compact tunable package. Optically controlled frequencyreconfigurable microstrip antenna. Pdf lowpower optically controlled patch antenna of. Opticallycontrolled reconfigurable microstrip patch. State of the art techniques for cognitive radio antenna design. The antenna is designed to achieve the reconfigurabilty within the band.
Optically controlled microstrip patch antenna with reconfigurable null. The narrowband antenna is a microstrip patch printed on the reverse side of the substrate and connected to the wideband antenna via a shorting pin and designed to operate from 5. Fets are also used for reconfigurability in patch antenna 5. A reconfigurable cslot microstrip patch antenna is proposed in 4. A patch antenna is presented which has been designed to radiate frequencies in the range 49. Optically controlled reconfigurable bandnotched uwb. As from these figures, the material used for fabrication is fr4 substrate of thickness 1. S11 measurements show that greater than 85% power is transmitted at each of the three resonant frequencies. Pdf this work presents the development of optically controlled reconfigurable antenna arrays. The antenna can operate in dual band or in a very wideband mode. Many works propose multilayers patch antennas to enhance fbw 10.
In this letter, novel designs for optically switching the resonant frequency of a microstrip patch antenna via photoconductive switches are proposed, and design considerations for maximizing frequency switching ratio with finite photo. Reconfigurability of an antenna refers to the capacity to adjust a radiators characteristics in terms of resonant frequency, radiation pattern or polarization 3,4,5. A survey on planar antenna designs for cognitive radio. An optically controlled frequency reconfigurable microstrip patch antenna is presented in this paper.
The microstrip rectangular structure as shown in fig. Zhao, ds, lan, lt, han, yf, liang, f, zhang, ql and wang, bz 2014 optically controlled reconfigurable bandnotched uwb antenna for cognitive radio applications. International journal of advanced research in electronics. A frequency reconfigurable antenna is arguably the most.
The antenna consists of a microstrip feed connected to a circular radiating element divided into three patches which are connected through silicon pin diodes used as switches for achieving reconfigurability as being cheap and easy to implement having high switching capabilities. Figure 5, 6 and 7 shows the fabricated reconfigurable microstrip patch antenna to achieve notch bands. A compact optically controlled ultrawideband uwb antenna with reconfigurable bandnotched characteristics is investigated for cognitive radio cr applications. Investigating the effects of control lines on a frequency reconfigurable patch antenna a. Frequency reconfigurable rf circuits using photoconducting. Opticallycontrolled reconfigurable microstrip patch antenna ieee. S11 measurements show that greater than 85% power is. Investigation of an optically induced superstrate plasma. Research article lowpower optically controlled patch. Investigating the e ects of control lines on a frequency.
The invention belongs to the technical field of antennas and discloses an ultra wide band antenna with reconfigurable frequency. International journal of advanced research in electronics and communication. The filter is designed by applying defected microstrip structure dms technique and positioned in printed antenna feeding line in order to keep the same size of the original. Optically controlled frequencyreconfigurable microstrip. A novel frequencyreconfigurable microstrip antenna composed of organic semiconductor polymer p3ht is proposed.
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