In this paper the reconfigurable patch and ground plane used as a technique for enhancing band width of microstrip antenna, traditional rectangular patch microstrip antenna is used as a comparison. A slot is etched on the ground plane of the antenna, where two varactor diodes are placed on each side of the slot in order to tune the lower band. To achieve these needs, the first solution is to design antennas with reconfigurable polarization and wideband characteristics 1,2,3,4,5,6,7,8. But the biggest disadvantages is that they are narrow band antennas. Utilizing the shorting pins or shorting walls on the uneven arms of a ushaped patch, uslot patch, or lprobe feed patch antennas, wideband and the dualband impedance bandwidth have been achieved with electrically small size 7. Owing to the novel excitation scheme, two probe modes along with a patch mode are simultaneously excited within the passband, producing a wide bandwidth of 21. In this paper, a novel single feed frequency and polarization reconfigurable microstrip patch antenna is presented. This shift is due to fringing fields around the antenna. Reconfigurable stacked microstrip patch antenna for multi. Design and simulation of reconfigurable monopolar antenna. 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. Eshaped patch antenna with reconfigurable circular. As reported in 30, a power division network was employed in a monopole antenna, and a. The realized null depth in the difference mode is well below 30 db, which makes the proposed antenna well suited for monopulse radar applications.
Mar 05, 2017 the microstrip antenna have various advantages like low cost, can be mounted on planar surface,light weight,support dual and triple band of frequency etc. Recent developments of reconfigurable antennas for current. The proposed antenna structure provides bandwidth variation from 90. On the use of slots in the design of patch antennas. This will answer such questions as what is the bandwidth of a dipole antenna. The frequency reconfiguration is achieved by using a pair of pin diodes in the antenna feed line to switch the antenna either in wideband mode or in concurrent triband mode. Reconfigurable patch and ground plane microstrip antenna to. Geometrical variation in horse shoe structure used as lower patch is responsible for controlled bandwidth variation. A new polarizationreconfigurable antenna for 5g applications. A frequency band reconfigurable antenna is designed and experimentally analyzed. However, they face the same challenge of narrow bandwidth.
The antenna presents a reconfigurable lower band and a steady band at higher frequencies. Polarization reconfigurable memscpw antenna for mmwave. Varactors can also be embedded into the reconfigurable antenna, either on its radiating patch. Pdf in this paper the reconfigurable patch and ground plane used as a. A compact monopole antenna with rectangular and triangular slots etched on the partial ground and the center of the rectangular patch achieves a wide usable fractional bandwidth of 148 % in. At the two rf ports an impedance transformer matches the 50. These two switches are operated at the same time either switchon or switchoff ideal switches are designed in conneting two radiating patches for the simulation purpose using cst software. The designed antenna operates at the expected 60 ghz 5g frequency band with a central coaxial probe feed.
Antenna covers the various wireless standards wlan, wimax, wifi and uwb with return loss s11 antenna has various applications because it have various advantages as to conventional antenna. Comprehensive parametric studies were carried out to determine how to design these proposed patch antennas based on their materials dimensions and their geometry. Specifically, the realized gain and total efficiency are increased by 2 dbi and 24%, respectively. The proposed antenna provides triple bands in which the bandwidth of 367mhz for 2.
The antenna is potentially suitable for cognitive radio application. Polarization reconfigurable microstrip patch antenna for. The first resonant frequency shifts down by varying. Frequency reconfigurable patch antennas have attracted significant attention due to their ability to cover multiple frequency bands 1723. This project proposes the design of a reconfigurable micro strip patch antenna using mems technology a reconfigurable microstrip patch antenna of operating frequency in the range of 58 ghzcband, for the application of wireless communication has been designed. Finally, the proposed antenna obtains reconfigurable cp radiation using only two diodes at three distinct frequencies.
In 24, a bandwidth reconfigurable antenna was introduced for wireless local area network wlan and worldwide interoperability for microwave access wimax applications. Pattern reconfigurable antenna array for mimo application. Reconfigurable antenna wikimili, the best wikipedia reader. Reconfigurable microstrip patch antenna for wlan software. This antenna mainly comprises of a corner truncated square patch with a rectangular ring slot, eight pin diodes and six conductive pads. The width can be used to vary the input impedance of the patch. But the biggest disadvantages is that it has very narrow bandwidth and low gain. The pr oposed antenna can be used in the cband wireless. The radiator gives multiband properties to fractal geometry antenna with directive patterns. Many efforts have been made to realize polarization reconfigurable antennas as in 3 10. Survey on different types of reconfigurable patch antenna for.
Reconfigurable wideband circularly polarized stacked square. The proposed microstrip patch antenna structure is fed by micro strip line feed. Frequency reconfigurable microstrip patch antenna for. 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. Design of frequency reconfigurable micro strip patch. In the concurrent triband mode frequency tuning is done. Reconfigurable microstrip patch antenna using mems technology. Pdf a simple frequency reconfigurable microstrip patch antenna. A quadpolarization and frequency reconfigurable square ring.
A filtering patch antenna with reconfigurable frequency. It consists of a square patch of side a printed on rt duroid substrate of. The antenna, containing a semicircular slot, was compact in size and had a good axial ratio and frequency response. Pdf reconfigurable patch and ground plane microstrip antenna to. Simple reconfigurable circularly polarized antenna at. Electrical and electronics engineering department, university of tripoli, tripoli, libya.
The main objective of this paper is to discuss the design and performance issues of microstrip antennas. The usable bandwidth of polarized patch antenna is the overlapping of. This paper presented a new circular polarization reconfigurable antenna for 5g wireless communications. The antenna consists of a microstrip patch and a slot in the ground. The proposed antenna can be used in the cband wireless communication. Design and implementation of reconfigurable patch antennas for wireless communications by fei he a thesis presented to the faculty of the graduate college at the. The antenna bandwidth was expanded by utilizing the coupling effect between the notched patch and the resonant aperture for dualband rfid reader antenna 155 mm x 230 mm in size 16. In this paper the reconfigurable patch and ground plane used as a technique for enhancing band width of microstrip antenna, traditional rectangular patch microstrip antenna is used as a comparison for result with the proposed antenna design.
Aelectrically reconfigurable antennas in case of electrically reconfigurable antenna, radiating structure andor radiating edges of antenna are. In 24, a bandwidth reconfigurable antenna was introduced for wireless local area. Bandwidth enhancement of a polarizationreconfigurable. Meanwhile, the antenna in uses two diodes but the number of reconfigurable cp bands was limited to two. Reconfigurable patch antennas have drawn a lot of research interest for future wireless communication systems due to. Design of a dualband frequency reconfigurable patch antenna. New radiation patternreconfigurable 60ghz antenna for 5g. The bandwidth of the traditional rectangular patch antenna is about 0. Reconfigurable antenna meaning reconfigurable antenna definition reconfigurable antenna explanation. The slot and patch parameters are numerically analyzed to achieve wide bandwidth along with symmetric radiation patterns.
A bandwidth reconfigurable microstrip antenna has been presented in this paper. Frequency reconfigurable uwb antenna design for wireless. A wideband filtering patch antenna is investigated in this paper. Mar 06, 2017 what does reconfigurable antenna mean.
Directional and bidirectional patterns are produced by the patch and slot, respectively. What are techniques to increase the bandwidth of microstrip. Polarization reconfigurable antennas are able to radiate waves with different polarizations but maintain the same radiation pattern. Microstrip antenna has various applications because it have various advantages as to conventional antenna. Recent developments of reconfigurable antennas for current and. In the technique of optimizing of patch geometry, reconfigurable, the bandwidth is achieved by introducing the metamaterial phenomena instead of the single patch antenna, metamaterial is used for enhance the parameters. In this paper, a reconfigurable slot antenna with a simple structure is presented. Survey on different types of reconfigurable patch antenna. Rectangular patch antennas are notoriously narrowband.
The bandwidth of an antenna is the frequency range over which antenna give design performance gain, efficiency, returnloss. The measured center frequency for the cp square patch fed by a surface launch connector without and with an identical stacked patch is 8. In this paper, the design of a reconfigurable microstrip patch antenna with rf pin diode switches is presented for wlan sdr applications. A frequency reconfigurable antenna is arguably the most. The rpm utilizes one or more patch antenna elements in combination with mems switches to allow multifrequency reconfiguration. The operating bandwidth around the targeted resonant modes 2. Design of a dualband frequency reconfigurable patch. Here is the link page to the various patch antenna and microstrip antenna topics.
Vijay shanker et al frequency reconfigurable microstrip patch antenna for wireless applications using pin diode 927 international journal of current engineering and technology, vol. Introduction microstrip patch antennas are printed directly onto a circuit board it becoming more useful. The driven patch and the stacked patch have identical substrate properties. A frequency reconfigurable patch antenna design based on the characteristic mode analysis is presented. Budimir 2 1wireless network and communication centre wncc, school of engineering and design, brunel university, west london. Based on the reconfiguration techniques frequency reconfigurable antennas can be classified into four categories as below. Eshaped patch antenna with reconfigurable circular polarization for wireless applications ahmed khidre, kaifong lee, fan yang, and atef elsherbeni. Oct 22, 2018 a filtering patch antenna with reconfigurable frequency and bandwidth using fshaped probe abstract. Bandwidth reconfigurable microstrip rectangular patch antenna with operating frequency f c, 5. Index terms antenna, antenna radiation pattern, electromagnetic propagation, microstrip antenna, patch antenna i. Simulation results for s 11, axial ratio, and gain radiation pattern.
For example, patch antennas are commonly modified to form. The patch antenna is fed by an fshaped probe, which consists of one upper and two lower horizontal arms, as well as a vertical arm that connects them. In addition, the antenna yields narrow bandwidth with minimum variation in gain, hence used for 4g and 5g technologies. A filtering patch antenna with reconfigurable frequency and. The antenna q also relates to bandwidth higher q is lower bandwidth, and vice versa. Reconfigurable c and ku band antenna using duelpatch. Third, the impedance bandwidth of a cp stacked square patch fed by a surface launch connector is 2. Wideband radiation reconfigurable microstrip patch antenna. Two cslots are employed on the patch elements for excitation of the multiband mode. Bandwidth reconfigurable patch antenna for next generation. To give some concrete examples of bandwidth, here is a table of the bandwidths for common antenna types. Compared with the mpa without the crr, the bandwidth of the proposed antenna.
In, polarization reconfiguration metasurface is rotated to realize 4% 3 db axial ratio bandwidth in both rhcp and lhcp states. A reconfigurable antenna is an antenna capable of modifying its frequency and radiation properties dynamically, in a controlled and reversible manner. The reconfigurable patch possesses an eshaped structure and its operation frequency can be changed by integrated switches. Shastry a free powerpoint ppt presentation displayed as a flash slide show on id. By using complementary rhombus resonator crr, a smallsize and lowprofile microstrip patch antenna mpa with broad bandwidth has been proposed.
Polarization reconfigurable memscpw antenna for mm. This significantly reduces the back radiation, increases the boresight gain, and produces a pattern identical to that of a conventional microstrip patch antenna. The term reconfigurability refers that it adaptively changes its characteristics. Parametric studies were conducted to illustrate the working principle of the proposed antenna. The bandwidth of t he traditional rectangular patch antenna is about 0. Multiband, frequency reconfigurable, and metamaterial. Reconfigurable patch antenna for bandwidth control for point to. Array antennas adopted a wilkinson power divider and a power divider with a phase shifter to obtain a wide axialratio bandwidth arbw. As reported in 30, a power division network was employed in a monopole antenna, and a 10 db bandwidth of 51% is obtained.
This antenna has stairslots on the ground and two pin diodes are used for switching the antennas. As we have to ultimately match the patch input impedance to 50ohms, we can control input impedance to some extent by changing the patch width w. Reconfigurable beam steering using circular disc microstrip patch antenna with a ring slot is proposed. Bandwidth enhancement of microstrip patch antenna using. Reconfigurable integrated patch antenna for gband applications. Bandwidth enhancement of a polarizationreconfigurable patch. The antenna operates over a large bandwidth, however the impact of the switches and its steering on antenna performance is not reported.
Reconfigurable patch and ground plane microstrip antenna. Reconfigurable wideband patch antenna for cognitive radio. The proposed antenna configuration is illustrated in figure 2a. Design of reconfigurable microstrip patch antenna f or wlan application biplab parida 1, abhishek kumar 2, janardan sahay 3 deptt. Reconfigurable microstrip patch antenna using mems. Abstract in this paper we propose a rectangular microstrip p atch antenna with inset fed which can operate at 2. An effective design of a reconfigurable patch antenna, with a wide operational bandwidth for wireless communication and radar systems, is presented in this paper. Design and performance issues of microstrip antennas. In order to improve the bandwidth and gain of the antenna for wideband operation, the properties of jk inverter and split ring resonators are exploited.
A novel single feed frequency and polarization reconfigurable. Reconfigurable wideband patch antenna for cognitive radio h. Dec 01, 2015 in operating as a reconfigurable multiband antenna, the switch is placed in between the dipole arm and the cshaped patch antenna for both elements. The bandwidth of the traditional rectangular patch antenna is about. Secondly, the microstrip antenna was designed to operate at 100 mhz, but it is resonant at approximately 96 mhz.
Dual layer circular patch antenna structure has been used. A polarizationreconfigurable rectangular patch antenna for bandwidth enhancement is proposed. Reconfigurable high gain split ring resonator microstrip patch. Frequency reconfigurable microstrip patch antenna final project presentation presented by. Technology a reconfigurable microstrip patch antenna of operating frequency in the range of 58 ghzc band, for the application of wireless communication has been designed. There have been many examples of antennas for sdr and multi frequency and frequency reconfigurable antennas for different applications 12. Reconfigurable integrated patch antenna for g band. Budimir 2 1wireless network and communication centre wncc, school of engineering and design, brunel university, west london, ub8 3ph, uk. Antenna design and simulation the proposed structure for a millimeterwave polarization reconfigurable antenna consists of a square coplanar patch antenna printed on a very thin 200m synthetic quartz glass substrate. Bandwidth reconfigurable antenna on a liquid crystal.
Reconfigurable wideband circularly polarized stacked. These antennas, however, require complex feeding networks. An additional resonance is introduced by the crr to broaden the bandwidth. Antenna covers the various wireless standards wlan, wimax, wifi and uwb with return loss s11 reconfigurable integrated patch antenna for gband applications. The proposed reconfigurable antenna has four patches designed to cover the frequency band from 1. The tested results in wideband mode shows that the proposed antenna operates from 3. The bandwidth of the monopole is relatively narrow due to its small height of 7 mm. In thus paper a yagi uda shaped frequency reconfigurable microstrip patch antenna is presented. In this project, a singlefeed reconfigurable multiband antenna with two patch elements on a planar structure is proposed. May 20, 2019 the antenna in has the smallest size but uses four diodes. Keywords patch antenna, monopolar antenna, wifi, pin diode, reconfigurable antenna, hfss. Due to the coupling effect of the parallel plate, current then flows along the upper patch design of closely packed pattern reconfigurable antenna array for mimo terminals hui li, buon kiong lau and sailing he. The proposed hybrid reconfigurable fractal antenna is a novel compact, simple, multiband and reconfigurable. A lot of work has been carried out frequency reconfigurable micro strip patch antenna for mobile communication standards summarized in 20.
Reconfigurable koch loop fractal antenna using rf switch. A polarization reconfigurable rectangular patch antenna for bandwidth enhancement is proposed. 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. The reconfigurable antennas proposed in can adjust its frequency bandwidth with a fixed lower limit and variable upper limit of its operating bandwidth, and another bandwidth reconfigurable filtering antenna is presented in by the integration of filter characteristics in feed line of the antenna through the coupled resonators. Two pin diode switches controlled the reconfiguration for both the righthand and lefthand circular polarization. Design of reconfigurable microstrip patch antenna for wlan. Survey on different types of reconfigurable patch antenna for wireless applications 1k. This antenna has stairslots on the ground and two pin diodes are used for switching the antennas polarization in linear polarization lp, lefthand circular polarization lhcp and righthand circular polarization rhcp. Bandwidth definition may vary as per requirement, in most of the cases, the designer takes 10 db bandwidth frequency range in which antenna return loss is better than 10 db. Reconfigurable patch module rpm concepts we now develop concepts for the reconfigurable patch modules rpms that are essentially the buildingblocks, or subarray elements, in a reconfigurable antenna. Pdf a reconfigurable microstrip antenna with switchable frequency is proposed. A reconfigurable multiband antenna for rfid and gps.
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