The slots are cut on the patch at two opposite corners. Reconfigurable microstrip patch antenna with a u slot is proposed for wearable fabric applications. Multifrequency rectangular microstrip antenna with array. It is found that the incorporation of a u slot in the patch can provide a flat input resistance and a linear input reactance across a wider bandwidth than the conventional patch antenna. 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. By the use of slot microstrip antenna can be used in many application. Hfss tutorial 2 microstrip patch antenna with a cutting slot coaxial feed how to cut slot in patch. Another very popular method for designing a compact multi frequency microstrip patch antenna is the. Hfss tutorial 2microstrip patch antenna with a cutting. A frequency reconfigurable microstrip patch antenna is proposed. For design the proposed antenna the u shaped slot and a.
Three switches are used to produce six reconfigurable frequencies. In this paper, a frequency reconfigurable microstrip slot antenna for ultrawideband applications with switchable bandnotch functions is designed and manufactured. In my previous tutorial on hfss, i give an idea of cutting a slot in a rectangular patch so if you dont know how to cut u slot in patch then go to hfss tutorial no 2 today i. The antenna consists of two symmetric slots that are fed by a forkshaped microstrip line. A u slot is incorporated into a square patch, and a pin diode is utilized to switch the. There may or may not be a ground plane on the other side of the substrate. The vswr or impedance bandwidth of microstrip patch antenna is defined as the frequency range over which it is matched with that of fed line with in specified limits. Antenna 1 has rectangular patch and antenna 2 has a slot and a pin diode between. With a coaxial probe, two orthogonal resonant modes of the square patch antenna are simultaneously excited. Request pdf frequency reconfigurable uslot microstrip patch antenna a.
Their low profile design, often square or rectangular, allows them to be mounted to flat surfaces. Fabrication of e slot microstrip patch antenna for wlan application. A quadpolarization and frequency reconfigurable square ring. Comprehensive parametric studies were carried out to determine how to design these proposed patch antennas based on their materials dimensions and their geometry. Compact rectangular slot patch antenna for dual frequency. Those switches are positioned in the slot places underneath the.
The antenna is fabricated on a taconic tlt substrate with a thickness of 1 mm and a relative permittivity of 2. By using mathematical analysis we have designed the u slot microstrip antenna for amateur radio application which operates in the frequency band 5. Frequencyreconfigurable microstrip patch antennas with. Frequency reconfigurable microstrip patch antenna and its application in cognitive radio 16. On the use of slots in the design of patch antennas department of. International journal of computer applications 0975 8887 volume 92 no. Antenna is fed by microstrip transmission line with the metal strip of width 4mm and length 5mm. 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. Raja, study of microstrip feed line patch, international journal of.
Those switches are positioned in the slot places underneath the patch. A reconfigurable microstrip patch antenna with frequency and circular polarization diversities abstract. A broadband patch antenna array with planar differential lshaped feeding structures. Single layer dual band microstrip patch antenna using. The most common version of printed antenna is microstrip antenna, which consists of a metallic patch above a ground plane. Frequency reconfigurable microstrip rectangular patch antenna using stubs the frequency reconfigurable microstrip antenna is connected to a feed line and two electronic switches.
The four parasitic patches on the top patch metallization are properly place don its length, width and gap were optimised for desired frequency range as shown in table 1. Two pin diodes are loaded in the slots to produce two different frequency bands. The antenna structure has been designed on fr4 lowcost substrate material of relative permittivity. A singlefeed circularly polarized cp patch antenna at lband is designed and built using the. Lee, frequency reconfigurable uslot microstrip patch antenna, ieee antennas. The microstrip patch antenna produces three reconfigurable frequency bands while the slot produces another three frequency bands at the lower frequency region. Study of frequency and polarization reconfigurable on. What is the difference between slot antenna and patch antenna. Figure 4 from design of reconfigurable fractal antenna using. Find, read and cite all the research you need on researchgate. Circularly polarized singlelayer u slot microstrip patch antenna has been proposed. A compact frequency reconfigurable unequal uslot antenna. The shape and size of patch determine the frequency of operation of the antenna and its performance. The proposed antenna consists of a single layer patch antenna with two parallel slots designed that can be controlled via two pin diode.
Axial ratio and radiation pattern is also improved. A quadpolarization and frequency reconfigurable square. Frequency reconfigurable uslot microstrip patch antenna. Reconfigurable microstrip patch antenna with a uslot using. The simple design consists of two slots and two feeds. What is the difference between slot antenna and patch. The proposed antenna consists of a single layer patch antenna with two parallel slots designed that can be.
An effective design of a novel, compact, single feed, dual patch frequency reconfigurable microstrip patch antenna mpa for wireless communication systems is proposed and studied in this paper. Sep 11, 2018 wideband u slot microstrip patch antenna array, appysis of slot coupled microstrip patch antennas a citeseerxa patch antenna is literally a patch of metal or other conductor on a flat surface. A triangular patch antenna for uhf band with microstrip. 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. The patch was designed for tm 010 mode of excitation at 2. A design of reconfigurable rectangular microstrip slot. Dec 03, 2016 this paper presents the design and simulation of a compact rectangular slot patch antenna for dual frequency operation at 2. Frequency reconfigurable microstrip patchslot antenna with. Reconfigurable microstrip slot antenna with dgs for uwb. Design and analysis of compact u slot microstrip patch antenna. Reconfigurable microstrip antenna array 1 calculation of the width w. Keywords reconfigurable microstrip patch antenna, slots, swi tches, dual band, resonant frequency.
Fundamental structure of the antenna consists of a rectangular patch and a u shaped patch. 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. Microstrip patch antenna, reconfigurable frequency, pin. Eshaped microstrip patch antenna, frequency reconfigurable, rf, pin diode, vswr. Frequency reconfigurable microstrip patch antenna for. Reconfigurable microstrip patch antenna with a uslot. Frequency reconfigurable circular patch antenna with an.
It is found that the incorporation of a u slot in the patch can provide a flat input. The two varactors are located across the unequal u slot, which can switch six different frequencies between 2. Ghanshyam singh, mithilesh kumar, 2012 frequency reconfigurable microstrip circular patch antenna for wireless devies. It is found that the incorporation of a u slot in the patch can provide a flat input resistance and a linear input reactance. The suggested asymmetrical u slot can generate the two orthogonal modes for circular polarization without chamfering any corner of the probefed square patch microstrip antenna. For design the proposed antenna the ushaped slot and a. 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. A wideband slot antenna with frequency and pattern reconfigurable characteristics for tdlte 3. Introduction 1patch antenna is a type of radio antenna with a low profile, which can mounted on a flat surface. Frequency reconfiguration of microstrip patch antenna with. Geometry parameter of frequency reconfigurable yagi uda shaped antenna. When the equivalent capacitance values of the varactors are increased. Actually, slot antenna is a radiating element formed by a slot in a metallic surface.
Frequency reconfigurable circular patch antenna with an arc. Reconfigurable multiband patch antenna ijert journal. Such a linearlypolarized reconfigurable microstrip antenna can be converted to a switchable cp antenna by embedding a cross slot with unequal lengths into the radiating patch. Microstrips patch antenna with slot array using hfss youtube. Fundamental structure of the antenna consists of a rectangular patch and a ushaped patch. The back feeding port is located in the symmetry axis and 7 mm away from the. The two feeds are positioned on the right and left diagonal of microstrip antenna. Frequency reconfigurable microstrip circular patch antenna. This antenna mainly comprises of a corner truncated square patch with a rectangular ring slot, eight pin diodes and six conductive pads. In this paper, a novel single feed frequency and polarization reconfigurable microstrip patch antenna is presented. By the use of slot we can enhance bandwidth, gain e. Wideband radiation reconfigurable microstrip patch antenna.
Design of reconfigurable microstrip patch antenna for wlan. A novel microstrip patch antenna with both frequency and circular polarization diversities is presented. Reconfigurable microstrip antenna array ijert journal. A reconfigurable microstrip patch antenna with frequency. Circularlypolarized reconfigurable microstrip antenna. In this paper, a compact frequency reconfigurable circular patch antenna with an. Design of reconfigurable microstrip patch antenna f or wlan application biplab parida 1, abhishek kumar 2, janardan sahay 3 deptt.
The bandwidth of microstrip patch antenna is defined as the frequency range over which it is matched with that of feed line within specified limits. Frequency reconfigurable u shaped microstrip patch antenna and its. Reconfigurable beam steering using a microstrip patch antenna. In this article, a frequency reconfigurable fractal patch antenna using pin diodes is proposed and studied. Frequency reconfigurable tshaped microstrip patch antenna. The resonant halfwavelength slot antenna is desirable because of its compact size. Survey on different types of reconfigurable patch antenna for.
To generate a wide usable fractional bandwidth of 3 to over. A reconfigurable stacked microstrip patch antenna for. A simple design of circularlypolarized cp microstrip antennas with frequency agility is described. The proposed antenna consists of two parts, a patch with two orthogonal slots on the upper substrate and a 3db hybrid coupler fed. By controlling the phase shift of applied currents through these probes, the antenna can be set to excite either the sum or the. It is derive that the resonant frequency is inversely proportional to the slot length and feed point and at the same time as it increases with increasing the coaxial probe feed. Hfss tutorial 3microstrip patch antenna with a cutting u. P, india abstract reconfigurable microstrip patch antenna with a uslot is proposed for wearable fabric applications. Design of frequency and patternreconfigurable wideband slot. May 01, 2018 totay ill show you how to evaluate the the value of microstips feed antenna in hfss software where a bluetooth frequency is used and slot in antenna with array for projects b.
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. Small circularly polarized uslot wideband patch antenna. At the two rf ports an impedance transformer matches the 50. In my previous tutorial on hfss, i try to simulate a simple model of microstrip patch antenna with the wide range of operating frequency or broadband antenna. Jan 25, 2002 koray surmeli, erkul basaran, serkan aksoy and bahattin turetken, a compact design of a wideband three layer u. Wideband u slot microstrip patch antenna array, appysis of slot coupled microstrip patch antennas a citeseerxa patch antenna is literally a patch of metal or other conductor on a flat surface. In this article, u slot loaded circular microstrip patch antenna is successfully designed and simulated for dual frequency wideband operation. Thus, patch 2 is not electrically connected to feed 2 or ground. The proposed antenna was manufactured on a fabric substrate and designed to steer the beam directions at the operation frequency of 6. Dual band reconfigurable pin diode based microstrip patch. Three switches metal strips are used as switch are placed in the slot. Microstrip square patch antenna using cst by shamsur rahman. Frequencyreconfigurable stacked patch microstrip antenna.
A frequency reconfigurable microstrip patch antenna is presented. Uslot microstrip antenna for amateur radio application. Frequency reconfigurable uslot microstrip patch antenna ieee. The antenna presented in 6 is shown in figure 4, it consists of a radiating circular patch with a slot below the circular patch. Request pdf frequency reconfigurable microstrip patch antenna a frequency. By controlling the phase shift of applied currents through these probes, the antenna can be set to excite either the sum or the difference mode. A wideband slot antenna with frequency and patternreconfigurable characteristics for tdlte 3. 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. The microstrip rectangular structure as shown in fig. Antennas using patches as constitutive elements in an array are also possible. In contrast, when feed 1 is off and feed 2 and the shorting pins are on, patch 1 is disconnected from feed 1, while.
The simulation of the designed antenna was done with the aid of computer simulation technology cst microwave studio version 12. This paper presents a dual band frequency and polarization reconfigurable microstrip antenna. Patch antenna is actually a patch antenna placed over a antenna base. It consists of a flat rectangular sheet or patch of metal, mounted over a larger sheet of metal called a ground plane. The basic u slot loaded rectangular micro strip patch antenna design. By placing a variable capacitor and an inductor at the antenna input, the impedance matching frequency of the antenna. It consists of a square patch of side a printed on rt duroid substrate of. The performance parameters of the modified structure are compared with that of a simple circular microstrip patch antenna excited under similar conditions. The suggested asymmetrical u slot can generate the two orthogonal modes for circular polarization without chamfering any corner of the probe fed square patch microstrip antenna. Fabric substrate is used for the proposed antenna for manufactured and designed to steer the beam directions at the operation frequency of 7. Design of the proposed microstrip patch antenna in the literature, various techniques were demonstrated for multiple frequencies antennas with the large width such as l shaped patch, u shaped patch, stacked patch, and e. Tripathi abstractin this paper, a novel frequency recon.
Shailander singh khangarot, gajendra sujediya, tejpal jhajharia, abhishek kumar2015 design and fabrication of e slot microstrip patch antenna for wlan application. Vijay shanker et al frequency reconfigurable microstrip patch antenna for wireless applications using pin diode 927 international journal of current engineering and technology, vol. A triangular patch antenna for uhf band with microstrip feed line for rfid applications twinkle kundu1 and davinder parkash2 1m. In this paper we have seen the effect of slot on microstrip patch antenna. In this case all three pin diodes are in off conditions. To achieve dual frequency operation u shape slot is inserted in simple patch with three rf pin diodes d 1, d 2, d 3 which is placed in middle of each slot in above design. When the switch is on the electrical size of antenna becomes small and it resonates at higher umts 2100 mhz band. Slot loaded compact microstrip patch antenna for dual band. A rectangular microstrip antenna containing an array of narrow l slots and inverted l slots is described for multifrequency operation. Introduction reconfigurability has become a crucial feature in m odern wireless communication world. Frequency reconfigurable microstrip patchslot antenna. It has one port excited with microstrip line feed mechanism. This can be circumvented by using an offset microstrip feed or the folded slot antenna, which stems directly from the folded dipole by bookers relation.
By cutting the slots on the radiating elements with different shapes such as u shaped slot thus called u slot, vshaped slot thus called v slot, and a pair of rectangular slots, the dual or triple band microstrip antenna. Study of frequency and polarization reconfigurable on square. The width of the microstrip patch antenna is given by equation. Additional benefits of patch antennas is that they are easily fabricated making them cost effective. Reconfigurable microstrip patch antenna with switchable. The design used with stubs are open, shorted and balanced stubs three stubs. The antenna consists of a rectangular patch with a u slot, two varactors across the slot and an lshaped fed line. The geometry of the proposed u slot frequency reconfigurable antenna is shown in figure 1.
A novel reconfigurable microstrip patch antenna with frequency and polarization diversities is proposed. Frequency reconfigurable ushaped microstrip patch antenna. Frequency and polarization reconfigurable microstrip antenna. The most common type of microstrip antenna is the patch antenna. Pdf design of wideband u slot microstrip antenna van cung. By definition, a printed antenna is one that is fabricated using standard photolithography technique.
Tripathi, frequency reconfigurable uslot antenna for. Design of frequency and patternreconfigurable wideband. To achieve dual frequency operation u shape slot is inserted in simple patch with three rf pin diodes d1, d2, d3 which is placed in middle of each slot in above design. Above concept is used in paper 6 and 4 to obtain multiband operation. It is found that the incorporation of a uslot in the patch can provide a flat input resi. A wideband rectangular microstrip patch antenna with reconfigurable radiation patterns is proposed in this paper, which contains two symmetrically inverted u slots, and incorporates two coaxial probes along the resonant length of the patch. Slot antenna differs with patch antenna in many aspects.
Reconfigurable c and ku band antenna using duelpatch. Reconfigurable beam steering using a microstrip patch antenna with a u slot is proposed for wearable fabric applications. Microstrip patch antennas or simply patch antenna are increasingly useful because the antenna is printed directly onto a circuit board. Abstract in this paper we propose a rectangular microstrip p atch antenna with inset fed which can operate at 2. 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 produce directional radiation pattern at all frequency bands, a reflector is installed at the back of the frequency reconfigurable slot patch antenna 23. The reconfigurable antenna is composed of a square radiating patch, four varactor diodes, and two lumped capacitors. Apr 01, 20 in this paper, a compact frequency reconfigurable unequal u slot antenna is achieved by changing the bias voltages of the two varactors. Frequency reconfigurable microstrip patch antenna request pdf.
822 529 949 222 984 1257 1604 953 1413 30 1422 1534 1049 17 265 1360 662 1047 1515 133 1234 1293 1421 889 238 1431 783 1349 1055 1461 1364