Frequency reconfigurable patch antennas have attracted significant attention due to their ability to cover multiple frequency bands 1723. Coaxial probe feeding is sometimes advantageous for applications like active antennas, while microstrip line feeding is suitable for developing highgain microstrip array antennas. Reconfigurable microstrip patch antenna array with beam. Microstrip antennas can also be fed from underneath via a probe as shown in figure 3. It consists of a square patch of side a printed on rt duroid substrate of. Pdf in this paper, micro strip patch and slot antenna are describe. By adjusting the bias voltage of the pin switch loaded. A quadpolarization and frequency reconfigurable square.
The two feeds are positioned on the right and left diagonal of microstrip antenna. Reconfigurable patch antennas with fourpolarization states agility using dual feed ports. Frequency reconfigurable patch antenna with bias tee for. The most common type of microstrip antenna is the patch antenna. Their low profile design, often square or rectangular, allows them to be mounted to flat surfaces. A novel single feed frequency and polarization reconfigurable.
Design and analysis of a frequency reconfigurable microstrip. Pdf polarization reconfigurable patch antenna for wireless. The microstrip rectangular structure as shown in fig. In microstrip antenna following feeding techniques are widely used, coaxial probe feed, microstrip line, aperture coupling. Index terms antenna, antenna radiation pattern, electromagnetic propagation, microstrip antenna, patch antenna. Reconfigurable high gain split ring resonator microstrip patch.
This paper presents a dual band frequency and polarization reconfigurable microstrip antenna. Design and implementation of reconfigurable microstrip patch antenna for sband applications p. Reconfigurable patch antennas with fourpolarization states. The antenna includes a circular radiating patch, a probe feed, and two parasitic pins. Technology a reconfigurable microstrip patch antenna of operating frequency in. Specifically, this design uses two switches with operating frequency at 5. Design of reconfigurable microstrip patch antenna for wlan. A reconfigurable antenna is another solution to achieve a wide impedance bandwidth by switching on and off some parts of the antenna. The present paper demonstrates a frequency and polarization reconfigurable microstrip patch antenna with simple feed structure. The designed antenna is fed by dual vertical branches at the output port of the ron. Introduction reconfigurable antenna ra for the function of changing its electrical parameters dynamically in respond. Design and implementation of reconfigurable microstrip. The dielectric constant that controls the resonance of the antenna. A reconfigurable antenna is an antenna capable of modifying its frequency and radiation properties dynamically, in a controlled and reversible manner.
The simple design consists of two slots and two feeds. Dual feed degenerate mode patch is used as the starting point for. A simple design of singlefeed polarizationreconfigurable microstrip antenna is presented in this paper. Wideband to concurrent triband frequency reconfigurable. 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. Frequency reconfigurable microstrip patchslot antenna with. A quadpolarization and frequency reconfigurable square ring. Frequency reconfigurable circular patch antenna with an. Polarization lhcp with a single feeding port designed by mohammod ali. The proposed microstrip patch antenna structure is fed by micro strip line feed. Polarization reconfigurable patch antenna for wireless.
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. Design and development of frequency reconfigurable microstrip patch antenna for application of wireless devices. A novel circular polarization cp reconfigurable microstrip antenna is presented. The aim of this chapter is to show various ways to overcome this problem by using various matching techniques for numerous patch antenna array schemes. Two feed reconfigurable microstrip patch antenna for polarization.
Frequency reconfigurable tshaped microstrip patch antenna. The antenna is fed by single coaxial probe in lower patch element. The structure of the frequency tunable antenna is composed of a microstrip patch antenna, impedance matching network, transmission feed line, and switching tuning circuit may optical, electronic or mechanical. Survey on different types of reconfigurable patch antenna for. Each corner is cutoff from the main patch through a narrow lshaped cut to get polarization reconfigurability.
Frequency reconfigurable microstrip rectangular patch antenna using stubs the frequency reconfigurable microstrip antenna is connected to a feed line and two electronic switches. A frequency reconfigurable printed microstrip fed patch antenna is proposed here. 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. 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. A single feed circular microstrip antenna with reconfigurable polarization capability is proposed.
Design equations for microstrip patch antenna design antenna design part2. Pdf design and optimization of reconfigurable insetfed. Introduction microstrip patch antennas have problems of low bandwidths. The antenna is capable of frequency switching at nine different frequency bands between 1. Design and analysis of reconfigurable microstrip patch antenna. Reconfigurable squarering microstrip antenna ieee journals.
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. Keywords reconfigurable antenna, compact microstrip antenna, radiation pattern reconfigurability, mems switch 1. Frequency reconfigurable microstrip patch antenna final project presentation presented by. A wideband circularly polarized reconfigurable microstrip patch antenna fed by lshaped probes is presented. Shastry a free powerpoint ppt presentation displayed as a flash slide show on id. This paper proposes a novel wideband to concurrent triband frequency reconfigurable microstrip antenna. A novel reconfigurable microstrip antenna with switchable polarization sense is proposed. The proposed antenna consists of a square patch fed along its diagonal line with four parasitic stubs added around its four sides connected by four pin diodes. The necessary switching action is provided by six pin diodes. Frequency reconfigurability is achieved by connecting an additional small patch to the main patch through a pin diode.
The proposed antenna has a simple structure, consisting of a cornertruncated square radiating patch. The cp reconfigurable antenna is divided into three layers, composed of an annular radiating patch, ring slot, and reconfigurable orthogonal network ron. Reconfigurable stacked microstrip patch antenna for multiband application lalit kumar lata lecturer, swami keshvanand institute of technology management and gramothan, jaipur, india abstract a novel design of reconfigurable stacked multipurpose broadband microstrip antenna for wimax application is presented. In contrast, when feed 1 is off and feed 2 and the shorting pins are on, patch 1 is disconnected from feed 1, while. A lot of work has been carried out frequency reconfigurable micro strip patch antenna for mobile communication standards summarized in 20. A novel reconfigurable microstrip patch antenna with polarization. A reconfigurable stacked microstrip patch antenna for. In this paper, a novel reconfigurable twolayer microstrip antenna fed using a coplanar waveguide through a slotloop combination is investigated. Since patch 1 is fed by feed 1, and patch 2 is electromagnetically coupled to patch 1, the whole geometry becomes a stacked microstrip patch. Microstrip patch antennas or simply patch antenna are increasingly useful because the antenna is printed directly onto a circuit board. A novel reconfigurable microstrip patch antenna with. The proposed frequency reconfigurable antenna is based on back fed circular patch antenna with an arcshaped slot length of 30 mm and width of 2 mm in the ground plane. Reconfigurable stacked microstrip patch antenna for multiband application lalit kumar lata. Radavaram and pour 1 have claimed 68% fractional bandwidth for a multiport antenna based only on a singleport input reflection coefficient s 11.
Physics antennas electronics design and construction engineering design methods. In addition, the impedance and axial ratio bandwidths are enhanced by using the proximitycoupled feed. Design of frequency reconfigurable micro strip patch. It feeds a single rectangular patch feeding patch using aperture coupling through a slot in the ground plane. Apr 24, 2018 the antenna is a low profile microstrip patch antenna which only uses a single feed, allowing it to be compact and simple in terms of its structure. Introduction microstrip patch antennas are printed directly onto a circuit board it becoming more useful. A polarizationreconfigurable high gain microstrip antenna. Compact microstrip antenna with patternreconfigurable. Comments on wideband radiation reconfigurable microstrip. The antenna is capable to reconfigure up to three different frequency bands. A pattern reconfigurable antenna with multibeam reconfiguration for satellite communication has also been reported in 4. This new hybrid technology attempts to incorporate active devices such as amplifiers and phase shifters with printed microstrip antennas into a single monolithic package. In 1999, a reconfigurable leaky patch antenna using pin diode was presented in 5.
At the two rf ports an impedance transformer matches the 50. This antenna has a simple structure, which consists of a radiating circular patch, five switches pin diode, three matching stubs, and a 50 microstrip feed line. Polarization reconfigurable microstrip patch antenna is presented for 2. A microstrip patch antenna can be fed either by coaxial probe or by an inset microstrip line. Index terms antenna, antenna radiation pattern, electromagnetic propagation, microstrip antenna, patch antenna i. Reconfigurable microstrip patch antenna for wlan software. Microstrip antenna or patch antenna basics in antenna and wave propagation by engineering funda. In this paper, frequency reconfigurable microstrip patch antenna is. Novel design of single feed circular microstrip antenna for polarization diversity is proposed. A simple design of circularlypolarized cp microstrip antennas with frequency agility is described.
Reconfigurable stacked microstrip patch antenna for multi. This paper presents a chip capacitor controlled electronically reconfigurable single feed dual frequency reconfigurable microstrip antenna capable of achieving a size reduction up to 71. This configuration is an attractive element for use in active integrated arrays. The tunable operation is obtained by varying the feed location of antenna. Reconfigurable antennas synthesis lectures on antennas. Reconfigurable single and multiband inset feed microstrip patch antenna. In this paper a reconfigurable microstrip patch antenna with inset feed is proposed which can operate at different frequency having an application for wlan.
Microstrip antennae are very simple in construction using a conventional microstrip fabrication technique. The antenna efficiency for all configurations has been found in the range of. Pattern reconfigurable wideband stacked microstrip patch antenna. The theory is applied to the analysis of a microstrip antenna fed by a slot line. Microstrip square patch antenna using cst by shamsur rahman.
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. 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. Two feed reconfigurable microstrip patch antenna for. What dielectric constant defines the half wavelength. Different polarization states are achieved by using four pin diodes placed at the patch corners. Multislots reconfigurable microstrip antenna with capacitive. In this paper presents a reconfigurable of multiple element microstrip rectangular antenna and integration with pin diode switches. It is demonstrated that by incorporating two orthogonal slots of equal lengths in the circular patch and utilizing two pin diodes to switch the slots on or off, right hand circular polarization rhcp or left hand circular polarization lhcp can be achieved using the same feeding probe. Reconfigurable microstrip slot antenna with dgs for uwb. In this paper, a tunable microstrip patch antenna designed using rf mems switches is reported.
A microstrip line is on the bottom side of the antenna. Reconfigurable c and ku band antenna using duelpatch. Frequencyreconfigurable microstrip patchslot antenna. Pdf reconfigurable microstrip patch antenna using mems. To generate a wide usable fractional bandwidth of 3 to over. Ill use the terms microstrip antenna and patch antenna interchangeably. Reconfigurable microstrip antenna array ijert journal. Paper 9 presents a novel design of a frequency reconfigurable stacked patch microstrip antenna. Flat surface makes them ideal for mounting on airplane impedance matching fairly simple microstrip patch antennas have a very high antenna quality factorq. A dual feed microstrip patch antenna with switchable frequency and polarization is realized. This antenna mainly comprises of a corner truncated square patch with a rectangular ring slot, eight pin diodes and six conductive pads.
The design and simulation antenna were performed using high frequency structure simulator hfss. A microstrip antenna in its simplest configuration consists of a radiating patch on one side of a dielectric substrate, which has a ground plane on the other side. Thus, patch 2 is not electrically connected to feed 2 or ground. Comments on wideband radiation reconfigurable microstrip patch antenna loaded with two inverted uslots. 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. The image below shows two ways to feed the microstrip patch, on the left is a microstrip feed and on the right is a coax feed. Omnidirectional microstrip patch antenna with reconfigurable. On this page, well discuss the microstrip antenna, which is also commonly referred to as the patch antenna. Microstrip antenna is one of the most popular types of printed antenna. Ppt frequency reconfigurable microstrip patch antenna.
This paper proposes a rectangular patch antenna fed from two orthogonal microstrip lines for polarization diversity. Q represents the losses associated with the antenna and a large q leads to narrow bandwidthand low efficiency. A novel singlefeed circular microstrip antenna with. Frequency and polarization reconfigurable microstrip antenna. Frequency reconfigurability can also be obtained by modifying feeding structure orand adding parasitic radiators. The reconfigurable antenna is composed of a square radiating patch. A compact of a reconfigurable rectangular microstrip slot patch antenna of operating frequencies in the range of 26 ghz is proposed for wireless local area network wlan applications. Pdf analysis of reconfigurable microstrip patch antenna. The design used with stubs are open, shorted and balanced stubs three stubs. Above rectangular patch antenna is a designed using following equations, width of microstrip patch antenna is calculated by following equation, w 36. Comprehensive parametric studies were carried out to determine how to design these proposed patch antennas based on their materials dimensions and their geometry. The dual feeds are used to excite two orthogonal modes of the antenna, and each feed network is composed of a coupling patch, an impedance transformer, and a variable capacitor. It plays a very significant role in todays world of wireless communication systems.
From 1999 until the present day, microstrip antenna has been used as a platform to design reconfigurable antenna 612. If you feed it at the edge you see an open circuit, because you are a halfwave from another open. Beam and polarization reconfigurable microstrip antenna based. An antenna system is defined as the combination of the antenna and its feed line. This paper highlights the proposed design for a dual band frequency reconfigurable microstrip patch antenna fed through a 50. A novel reconfigurable microstrip fed patch antenna with polarization agility in either of two bands is proposed in this communication. Microstrip patch antenna, reconfigurable frequency, pin diode.
Typical radiation pattern of microstrip antenna the patch is generally made up of a conducting material such as copper or gold and can take any possible shape like rectangular, circular, triangular, elliptical or. 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. The microstrip antenna is a standard patch antenna with an inset feed to achieve an input impedance of 50 by varying. To allow the operating frequencies and the bandwidths to be. Introduction 1patch antennas are assigned different names such as printed antennas, microstrip patch antennas or simply microstrip antennas msa. A frequency reconfigurable printed microstripfed patch antenna is proposed here. The designed corporate feed concept is used to animate an eight elements linear array of rectangular microstrip patch.
Design and implementation of reconfigurable microstrip patch. Reconfigurable microstrip patch antenna a schematic view of the proposed antenna is plotted in figure 1. Reconfigurable microstrip patch antenna for wireless. Empirical relations relating to the design for rectangular rings for desired frequency band are included in the paper. Jul 28, 2016 microstrip square patch antenna using cst by shamsur rahman akash shamsur rahman akash. Microstrip antennas are often used where thickness and conformability to the host surface are key requirements. Right hand circular polarization and left hand circular polarization could be excited by lshaped probes feeding a perturbed square patch. The reconfigurable antenna is composed of a square radiating patch, four varactor diodes, and.
A novel reconfigurable microstripfed patch antenna with polarization agility in either of two bands is proposed in this communication. Polarization reconfigurable microstrip patch antenna for. A frequency reconfigurable microstrip patch switchable to slot antenna is proposed. Omnidirectional microstrip patch antenna with reconfigurable pattern and polarisation. Abstractan effective design of a novel, compact, single feed, dual patch frequency reconfigurable. The rectangular patch antenna is analyzed, and what is learned here will be applied to understanding pifas planar invertedf antennas. The outer conductor of the coaxial cable is connected to the ground plane, and the center conductor is extended up to the patch antenna. Two feed reconfigurable microstrip patch antenna for polarization diversity abstract. Polarization reconfigurable microstrip patch antenna for wireless communication applications. The pin diodes are biased by an external dc circuitry to switch their states. A reconfigurable design for a dual feed squarering microstrip patch antenna is described. Additional benefits of patch antennas is that they are easily fabricated making them cost effective. Antennas using patches as constitutive elements in an array are also possible. In this paper, a frequency reconfigurable microstrip slot antenna for ultrawideband applications with switchable bandnotch functions is designed and manufactured.
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