Antenna switching between four frequency bands isra nazir, inam elahi rana, noor ul ain mir, and kanwal afreen abstractan e. Frequency reconfigurable tshaped microstrip patch antenna. Introduction 1patch antennas are assigned different names such as printed antennas, microstrip patch antennas or simply microstrip antennas msa. Abstract this paper presents a selective frequency reconfigurable antenna, suitable for cognitive radio applications. Normalized radiation pattern for microstrip patch antenna. Pattern and frequency reconfigurable annular slot antenna using pin diodes. 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. Simulated and measured parameters of the antenna are presented and it is demonstrated that the radiation patterns remain essentially unaffected by the. The main focus of this paper is to attain reconfigurability so that this microstrip patch antenna is used for bluetooth, wlan, wimax and advanced wireless service aws applications. Frequencyreconfigurable coplanar patch antenna with conical. The designed antenna operates at the expected 60 ghz 5g frequency band with a central coaxial probe feed. This paper highlights the proposed design for a dual band frequency reconfigurable microstrip patch antenna fed through a 50.
A frequency reconfigurable microstrip patch antenna is proposed. The proposed antenna consists of a microstrip patch. The slot and patch parameters are numerically analyzed to achieve wide bandwidth along with symmetric radiation patterns. In the proposed design a rectangular patch antenna with slots at the centre frequency 10 ghz that can be reconfigured in the. The fields are linearly polarized, and in the horizontal direction when viewing the microstrip antenna as in figure 1a well see why in the next section. A reconfigurable antenna is an antenna capable of modifying its frequency and radiation properties dynamically, in a controlled and reversible manner. The directivity of patch antennas is approximately 57 db. They operate at microwave frequencies where traditional antennas are not feasible to be designed. The antenna is capable of frequency switching at nine different frequency bands between 1. Ra can satisfy the diverse requirements and strict standards. Frequency reconfigurable microstrip circular patch antenna for wireless devices ghanshyam singh, mithilesh kumar abstract in this paper, a frequency reconfigurable circular antenna design and development is proposed for wireless devices.
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. A quadpolarization and frequency reconfigurable square ring. The design used with stubs are open, shorted and balanced stubs three stubs. In this proposed work the frequency reconfigurable microstrip patch antenna. The antenna uses four pin diodes for full frequency reconfiguration and partial pattern. Introduction reconfigurable antenna is used in the context of antenna,is the capacity to change an individual radiators fundamental operating characteristics through electrical,mechanical. A reconfigurable stacked microstrip patch antenna for. The shape and size of patch determine the frequency of operation of the antenna and its performance.
The conventional staging of signs between components in cluster. Recent developments in the wireless communication industry continue to drive the requirements for small, compatible, and affordable reconfigurable antennas. In order to produce directional radiation pattern at all frequency bands, a reflector is installed at the back of the frequency reconfigurable slot patch antenna 23. A k band patch antenna with reconfigurable frequency and polarization properties is proposed by benjamin rohrdantz et al. Microstrip patch antenna, reconfigurable frequency, pin diode.
Frequency reconfiguration of microstrip patch antenna with. It was found that, at all frequencies, directional radiation patterns are obtained. The microstrip patch antenna produces three different frequency bands with directional radiation pattern while the microstrip slot antenna produces another three. To overcome the challenges of multi frequency operation a new scheme of frequency reconfiguration is proposed. Survey on different types of reconfigurable patch antenna for. Hfss, reconfigurable microstrip patch antenna rmpa, diodes, frequency reconfigurable, circular. Reconfigurability is achieved by inserting pin diode switches in dmsdefected microstrip structure t slot filter. When the equivalent capacitance values of the varactors are increased. A novel single feed frequency and polarization reconfigurable.
Three switches are used to produce six reconfigurable frequencies. Frequency reconfigurable microstrip patch antenna ieee xplore. Pdf a simple frequency reconfigurable microstrip patch antenna. Introduction microstrip patch antennas are printed directly onto a circuit board it becoming more useful. To design our stacked microstrip patch antenna at around 2 ghz. One of the merits of frequency reconfigurable is that the antenna can provide rejection of interfering signals in the bands that are not in use so that the filter requirements of the front end circuits can be gently reduced 20. The proposed antenna consists of a microstrip patch antenna and a microstrip slot antenna where the slot antenna is positioned at the ground plane underneath the patch. 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. This paper gives a brief account on the methodology of designing an antenna changing its frequency using rf mems switches. The simple design consists of two slots and two feeds. Reconfigurable microstrip patch antenna for wlan software defined. It consists of a square patch of side a printed on rt duroid substrate of. New radiation patternreconfigurable 60ghz antenna for 5g.
This shift is due to fringing fields around the antenna. It can switch between two distinct frequency bands, but it performs polarization switching between right hand circular polarization rhcp and left hand circular polarization lhcp. An omnidirectional microstrip patch antenna, capable of reconfiguring both polarisation and radiation pattern is proposed. This paper presents a dual band frequency and polarization reconfigurable microstrip antenna. The antenna consists of two symmetric slots that are fed by a forkshaped microstrip line. Design of frequency reconfigurable microstrip patch antenna for s. A frequency reconfigurable microstrip patch switchable to slot antenna is proposed. Frequencyreconfigurable coplanar patch antenna with. Refer microstrip line basics and types and desgin of microstrip patch antenna for mobile for more information.
Frequency and polarization reconfigurable microstrip antenna. Compact microstrip antenna with patternreconfigurable. Omnidirectional microstrip patch antenna with reconfigurable. The patch antenna is proposed to tune between two frequencies, i. A frequency reconfigurable printed microstrip fed patch antenna is proposed here. Reconfigurability is achieved by inserting pin diode switches in dmsdefected microstrip. The most common version of printed antenna is microstrip antenna, which consists of a metallic patch above a ground plane. Compared to the common rectangular slot circular patch antenna, the.
Introduction reconfigurable antenna ra for the function of changing its electrical parameters dynamically in respond to various environments has been studied extensively 1. Keywords reconfigurable microstrip patch antenna, slots, swi tches, dual band, resonant frequency. In this paper, a novel single feed frequency and polarization reconfigurable microstrip patch antenna is presented. Vijay shanker et al frequency reconfigurable microstrip patch antenna for wireless applications using pin diode 928 international journal of current engineering and technology, vol. Wideband radiation reconfigurable microstrip patch antenna. Frequencyreconfigurable microstrip patchslot antenna. It operates with two orthogonal 45 slanted linear polarisations and can produce two like radiation patterndipole s. Abstract abstracta design for frequency reconfigurable antennas with conicalbeam radiation is described.
A wideband slot antenna with frequency and patternreconfigurable characteristics for tdlte 3. The design is based on the tm 02 mode of a coplanar annularring microstrip antenna, and several shorting strips are symmetrically placed along the circumference of the radiating patch to vary its resonant frequency. A design for frequencyreconfigurable antennas with conicalbeam radiation is described. Study of frequency and polarization reconfigurable on square. Reconfigurable antenna, compact microstrip antenna, radiation pattern reconfigurability, mems switch 1. Rectangular patch antennas are notoriously narrowband. A lot of work has been carried out frequency reconfigurable micro strip patch antenna for mobile communication standards summarized in 20. In futuristic world of wireless communication reconfigurable antenna plays an important role as reconfigurbale antenna offer the advantages of compact size, similar radiation for all designed frequency.
Frequency reconfigurable microstrip patch antenna and its application in cognitive radio 16 3. In this paper, a reconfigurable microstrip patch antenna with rf mems switch providing frequency reconfiguration is presented. Benefits or advantages of microstrip antenna following are the benefits or advantages of microstrip antenna. The dimensions of the patch are corresponds to the resonant frequency of antenna. Reconfigurable microstrip patch antenna in frequency and. Frequency reconfigurable microstrip antenna for cognitive. The microstrip patch antenna produces three reconfigurable frequency bands while the slot produces another three frequency bands at the lower frequency region. Frequencyreconfigurable microstrip patchslot antenna ieee. By definition, a printed antenna is one that is fabricated using standard photolithography technique. Frequency reconfigurable patch antennas have attracted significant attention due to their ability to cover multiple frequency bands 1723. Those switches are positioned in the slot places underneath the. Advantages and disadvantages of microstrip patch antenna.
Request pdf frequency reconfigurable microstrip patch antenna a. Frequencyreconfigurable microstrip patch antennas with. A reconfigurable nested microstrip patch antenna is designed on 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.
Reconfigurable beam steering using circular disc microstrip patch antenna with a ring slot is proposed. The simulation result shows good directional radiation pattern and the directivity. In this paper, frequency reconfigurable slot patch antenna with reflector at the back of an antenna is presented. With a coaxial probe, two orthogonal resonant modes of the square patch antenna are simultaneously excited. Frequency reconfigurable microstrip rectangular patch antenna using stubs the frequency reconfigurable microstrip antenna is connected to a feed line and two electronic switches. Ka band frequency reconfigurable microstrip antenna based on. Index terms antenna, antenna radiation pattern, electromagnetic propagation, microstrip antenna, patch antenna i. 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. Reconfigurable patch antenna, fr 4 substrate, frequency.
The proposed antenna is capable of switching between a wide operating band of. Secondly, the microstrip antenna was designed to operate at 100 mhz, but it is resonant at approximately 96 mhz. Frequency reconfigurable microstrip patchslot antenna with. Design of frequency and patternreconfigurable wideband slot. Frequency reconfigurable microstrip circular patch antenna. A simple design of circularlypolarized cp microstrip antennas with frequency agility is described. Design of reconfigurable microstrip patch antenna for wlan. Design of frequency reconfigurable microstrip patch antenna. A ka band microstrip patch antenna utilizing rf mems switches is proposed. At the two rf ports an impedance transformer matches the 50. In the proposed design, a circular patch antenna with circular slot using two pin diodes at the centre. A design for frequency reconfigurable antennas with conicalbeam radiation is described.
Frequency reconfigurable circular patch antenna with an arc. The two feeds are positioned on the right and left diagonal of microstrip antenna. Frequency reconfigurable microstrip patch antenna for. Introduction reconfigurability has become a crucial feature in m odern wireless communication world. This antenna mainly comprises of a corner truncated square patch with a rectangular ring slot, eight pin diodes and six conductive pads. The reconfigurable antenna is composed of a square radiating patch, four varactor diodes, and two lumped capacitors. A wideband rectangular microstrip patch antenna with reconfigurable radiation patterns is proposed in this paper, which contains two symmetrically inverted uslots, and incorporates two coaxial probes along the resonant length of the patch. Frequency reconfigurable microstrip patch antenna request pdf. The design is based on the tm 02 mode of a coplanar annularring microstrip antenna, and several.