Three switches metal strips are used as switch are placed in the slot. When the switch is on the electrical size of antenna becomes small and it resonates at higher umts 2100 mhz band with circular. The antenna presented in 6 is shown in figure 4, it consists of a radiating circular patch with a slot below the circular 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 accordingly six. The microstrip square patch antenna dimensions and ring slot dimensions should be primarily used to achieve frequency reconfiguration between dual frequencies f 1 and f 2. Design frequency reconfigurable microstrip patch antenna for. When the switch is on the electrical size of antenna becomes small and it resonates. The proposed antenna is using the dgs technique which uses three pin diodes with three rectangular slots. Frequency reconfigurable microstrip patchslot antenna with. Hence the microstrip patch antenna has been proposed and designed to a tunable frequency range from 2. Frequency reconfigurable circular patch antenna with an arc.
Design of reconfigurable microstrip patch antenna f or wlan application biplab parida 1, abhishek kumar 2, janardan sahay 3 deptt. Frequency reconfigurable circular patch antenna with an arcshaped slot. These slot are cut in the ground to produces eight reconfigurable different frequency bands. Design and analysis of frequency reconfigurable microstrip. To generate a wide usable fractional bandwidth of 3 to over. Three switches are used to reconfigure six different frequency bands. Bandwidth enhanced microstrip patch antenna for uwb applications free download the main aim is to design a compact microstrip patch antenna with bandwidth enhancement for uwb applications by introducing lshaped patch with a u slot. A frequency reconfigurable microstrip patch antenna is presented. The proposed reconfigurable antenna has four patches designed to cover the frequency band from 1. Frequency reconfigurable ushaped microstrip patch antenna. What is the difference between slot antenna and patch. By definition, a printed antenna is one that is fabricated using standard photolithography technique.
Slot antenna differs with patch antenna in many aspects. A wideband slot antenna with frequency and patternreconfigurable characteristics for tdlte 3. Frequency reconfigurable circular patch antenna with an. Novel design of reconfigurable microstrip slot antenna with switchable bandnotched characteristic. With a coaxial probe, two orthogonal resonant modes of the square patch antenna are simultaneously excited.
Basic geometry and basic characteristics of patch antennas 3. With modification, it is amenable to waveguide, coplanar waveguide cpw, coaxial, slot line, or microstrip feeding schemes and has been used in all aspects of wireless and radar applications. It is derive that the resonant frequency is inversely proportional to the slot length and. Frequency reconfigurable uslot microstrip patch antenna, ieee antennas and. In chapter 2, an espar of three closelycoupled rectangular patch elements that do not use phase shifters is presented. 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. Ghanshyam singh, mithilesh kumar, 2012 frequency reconfigurable microstrip circular patch antenna for wireless devies. Two pin diodes are loaded in the slots to produce two different frequency bands. Frequency reconfigurable microstrip circular patch antenna. Aug 14, 2011 this video shows the design of a microstrip patch antenna in cst microwave studio 2010. Rma basically comes from the conventional microstrip antenna. A novel reconfigurable dualband patch antenna design using a varactorloaded slot has been proposed.
The reconfigurable antenna is composed of a square radiating patch, four varactor diodes, and two lumped capacitors. The two varactors are located across the unequal u slot, which can switch six different frequencies between 2. Reconfigurable microstrip patch antenna with a uslot using. The microstrip patch antenna are having compact profile, simple structure and easy for fabrication. The basic u slot loaded rectangular micro strip patch antenna design. Actually, slot antenna is a radiating element formed by a slot in a metallic surface.
The antenna exhibits the property of change in frequency which results in change in return loss characteristics depending upon the configuration request. To generate a reconfigurable bandstop performance, we use a pin diode within the inserted triangularshaped slot in the modified radiating stub. The methods developed for efficient wideband patch antenna design are based on one or more of the following principles. Nishant kumar is a record of an original research work carried out. For the novel frequency and pattern reconfigurable yagiuda patch antenna detailed in chapter 4, two slots have been used on driven element to achieve frequency and pattern reconfigurability, and two openend stubs have been used to adjust working frequency and. A few designs by using u slot in antenna getting the dual frequency and circular. Study of frequency and polarization reconfigurable on square. 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.
The slot antenna, consisting of a narrow slit in a ground plane, is a very versatile antenna. Result and discussion the switching conditions considered to achieve the. Design of microstrip patch antenna for 5g application. Analysis and design of broadband uslot cut rectangular. Introduction reconfigurability has become a crucial feature in m odern wireless communication world. A frequencyreconfigurable microstrip patch switchable to slot antenna is proposed. In this study, the authors present a simple reconfigurable multiband antenna with two pin diode switches for worldwide interoperability for microwave access wimaxwireless local area networks wlan applications. Frequency and polarization reconfigurable microstrip antenna. Reconfigurable microstrip patch antenna with a u slot is proposed for wearable fabric applications. Reconfigurable beam steering using circular disc microstrip patch antenna with a ring slot is proposed. What is the difference between slot antenna and patch antenna. Reconfigurable antennas for wireless communications.
In the proposed design a rectangular patch antenna with slots at the centre frequency 10 ghz that can be reconfigured in the. The proposed antenna is a reconfigurable antenna with different slots. Frequencyreconfigurable microstrip patchslot antenna. This patch incorporates a htree fractal slot on the patch and ground plane of the resonating element with five 5 pin diodes integrated on the antenna surface to change the current distribution which consequently changes the resonance frequency. Novel frequency reconfigurable microstrip patch antenna based on a square slot for wireless devices. Frequency reconfigurable ushaped microstrip patch antenna and. In this paper, a novel frequency reconfigurable uslot microstrip antenna with. Another example is the design of a microstrip uslot patch antenna that can. Fabric substrate is used for the proposed antenna for manufactured and designed to steer the beam directions at the operation frequency of 7. Frequency reconfigurable ushaped microstrip patch antenna and its.
This paper provides a design methodology for the microstrip patch antenna. Reconfigurable beam steering using a microstrip patch antenna with a u slot is proposed for wearable fabric applications. On the use of slots in the design of patch antennas. 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. Reconfigurable microstrip slot antenna with dgs for uwb. A frequency reconfigurable microstrip patch slot antenna at nine different frequency bands between 1.
The proposed antenna was manufactured on a fabric substrate and designed to steer the beam directions at the operation frequency of 6. The antenna consists of a microstrip patch and a slot in the ground. Our design is reconfigurable and thin for that correct feed position is obtained by impedance matching. The shape and size of patch determine the frequency of operation of the antenna. For design the proposed antenna the u shaped slot and a. Multiband, frequency reconfigurable, and metamaterial. The most common version of printed antenna is microstrip antenna, which consists of a metallic patch above a ground plane. The antenna is potentially suitable for cognitive radio application. For example, frequency reconfigurable antennas are designed using rf. Design frequency reconfigurable microstrip patch antenna. Frequency reconfigurable microstrip rectangular patch antenna using stubs the frequency reconfigurable microstrip antenna is connected to a feed line and two electronic switches. Reconfigurable microstrip fractal antenna design in ansys hfss using pin diode new design of microstrip patch antenna using pin diode reconfigurable antenna with. 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 shaped patch and also the use of fractals, parasitic elements, and genetic based antennas 10. Pdf design of wideband u slot microstrip antenna van cung.
The antenna permits reconfigurable switching in up to ten frequency bands between 2. Vijay shanker et al frequency reconfigurable microstrip patch antenna for wireless applications using pin diode 927 international journal of current engineering and technology, vol. Design of frequency reconfigurable microstrip patch antenna for wireless applications heenachoudhary1. Reconfigurable microstrip patch antenna with a uslot. Title design and simulation based studies of a dual band u slot patch antenna for wlan application. By placing a variable capacitor and an inductor at the antenna input, the impedance matching frequency of the antenna can be varied. When the switch is on the electrical size of antenna becomes small and it resonates at higher umts 2100 mhz band with circular polarization. Multifrequency rectangular microstrip antenna with array. Polarization reconfigurability at each frequency is obtained using two pin diodes d5 and d6. The proposed antenna is a combination of a microstrip patch and slot antenna. It consists of a square patch of side a printed on rt duroid substrate of. Shailander singh khangarot, gajendra sujediya, tejpal jhajharia, abhishek kumar2015 design and fabrication of e slot microstrip patch antenna for wlan application. Design of frequency reconfigurable micro strip patch. The above equation says that the microstrip antenna should have a length equal to one half of a wavelength within the dielectric substrate medium.
A rectangular microstrip antenna containing an array of narrow l slots and inverted l slots is described for multifrequency operation. Kishk published a paper on frequency reconfigurable u slot patch antenna. The slots and slits of ushapes have been embedded on patch antennas to reduce the size. This paper presents a dual band frequency and polarization reconfigurable microstrip antenna. Design and analysis of compact u slot microstrip patch antenna 9 figure 1. The designed antenna operates at the expected 60 ghz 5g frequency band with a central coaxial probe feed. Multiband and multiparameter reconfigurable slotted. Frequency reconfigurable patch antennas have attracted significant attention due to their ability to cover multiple frequency bands 1723. The antenna consists of two symmetric slots that are fed by a forkshaped microstrip line. Novel design of reconfigurable microstrip slot antenna. By clicking accept all cookies, you agree to the storing of cookies on your.
Frequency reconfigurable uslot microstrip patch antenna. It is found that the incorporation of a uslot in the patch can provide a flat input resistance and a linear input reactance across a wider bandwidth than the conventional patch antenna. Reconfigurable microstrip fractal antenna design with line. Thus with further addition of a horizontal slot, s11 response is reco rded well below 10 db at both 2. Recent developments in the wireless communication industry continue to drive the requirements for small, compatible, and affordable reconfigurable antennas. 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. In this paper, the detailed design and analysis of frequency reconfigurable slot patch antenna with reflector is presented. The patch was designed for tm 010 mode of excitation at 2. Patch antenna is actually a patch antenna placed over a antenna base.
The size of the communication devices has decreased rapidly, for that purpose antenna is required to design for small size and low weight. Antenna 1 has rectangular patch and antenna 2 has a slot and a pin diode. A wideband slot antenna with frequency and pattern reconfigurable characteristics for tdlte 3. Abstract in this paper we propose a rectangular microstrip p atch antenna with inset fed which can operate at 2. Design of htree fractal slots frequency reconfigurable. Reconfigurable can be attached with pin diodes and varactor diodes but in this proposed antenna fixed patches had been used to achieve frequency reconfiguability. 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. The slot is positioned at the ground plane underneath the patch. The center frequency will be approximately given by. Design and analysis of frequency reconfigurable ushaped slot. The length l of the patch radiator is then selected such that it satisfies the condition of resonance. In the proposed design, a circular patch antenna with circular slot using two pin diodes at the centre. The two feeds are positioned on the right and left diagonal of microstrip antenna. The antenna is capable of frequency switching at nine different frequency bands between 1.
This paper presents a technique of frequency reconfigurable microstrip patch antenna for sband applications. When the equivalent capacitance values of the varactors are increased. Dual band reconfigurable pin diode based microstrip patch. In comparison to antenna ai, the improved antenna design aii utilizes four slotspin diodes. Frequency reconfigurable uslot microstrip patch antenna abstract. There may or may not be a ground plane on the other side of the substrate. Request pdf frequency reconfigurable uslot microstrip patch antenna a. Fundamental structure of the antenna consists of a rectangular patch and a u shaped patch. Design and analysis of compact u slot microstrip patch antenna. Abstractin this paper, a frequency reconfigurable hexagonal patch antenna with the ability to operate in l and s bands is been presented. The main aim of this antenna design is to be used for reconfigurablity with size of 50 x 50mm 2.
Frequencyreconfigurable microstrip patch and cavity. Microstrip patch antennas have found performance, ease of installation and. The ushaped micro strip patch antenna has the capability of wide. Proposed antenna a frequency reconfigurable design is proposed by using slot configuration in microstrip patch antenna with introducing pin diode between slots, which. Survey on different types of reconfigurable patch antenna for. The slots are cut on the patch at two opposite corners. The shape and size of patch determine the frequency of operation of the antenna and its performance. Frequency reconfigurable tshaped microstrip patch antenna. The proposed antenna designed on fr4 substrate with dielectric constant 4.
Introduction reconfigurable microstrip antennas rmas are a current technology that has been adequately applied in modern wireless systems or radar applications. Frequency reconfigurable microstrip patchslot antenna. Microstrip patch antenna, reconfigurable frequency, pin diode. Reconfigurable beam steering using a microstrip patch antenna. At the two rf ports an impedance transformer matches the 50. The proposed microstrip patch antenna structure is fed by micro strip line feed. Design of multiple frequency microstrip antenna for mine applications.
These values are best suited for designing the antenna. I am using ie3d software for simulating the frequency 1. 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 quadpolarization and frequency reconfigurable square ring. Keywords reconfigurable microstrip patch antenna, slots, swi tches, dual band, resonant frequency. Pin diode based microstrip patch antenna with and without slot. To overcome the challenges of multi frequency operation a new scheme of frequency reconfiguration is proposed.
Study of frequency and polarization reconfigurable on. Design of frequency and patternreconfigurable wideband. The design used with stubs are open, shorted and balanced stubs three stubs. Design of frequency reconfigurable microstrip patch antenna. A quadpolarization and frequency reconfigurable square. Reconfigurable microstrip patch antenna with a uslot is proposed for wearable fabric applications. In this paper, a compact frequency reconfigurable unequal u slot antenna is achieved by changing the bias voltages of the two varactors. Frequency reconfiguration of microstrip patch antenna with. Reconfigurable dualband patch antenna using varactor. Directional and bidirectional patterns are produced by the patch and slot, respectively.
Pdf frequency reconfigurable uslot antenna for sdr. Novel frequency reconfigurable microstrip patch antenna. Design of reconfigurable microstrip patch antenna for wlan. Design and analysis of compact u slot microstrip patch. Tripathi, frequency reconfigurable uslot antenna for sdr. For better communication, it is the need to design proper functioning of the antenna. A lot of work has been carried out frequency reconfigurable micro strip patch antenna for mobile communication standards summarized in 20.
Using these modified structures, the usable upper frequency of the antenna is extended from 8. Design and analysis of double u slot loaded dual frequency. In this paper, a frequency reconfigurable microstrip slot antenna for ultrawideband applications with switchable bandnotch functions is designed and manufactured. A simple design of circularlypolarized cp microstrip antennas with frequency agility is described. 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. It is found that the incorporation of a u slot in the patch can provide a flat input resistance and a linear input reactance. New radiation patternreconfigurable 60ghz antenna for 5g. Slot loaded compact microstrip patch antenna for dual band. Introduction of slot inside t he microstrip patch antenna does not increase the p atch size or changes the radiation pattern but changes t he input impedance of antenna. In this paper i am proposing a microstrip patch antenna which works on multi frequency 1. Frequencyreconfigurable stacked patch microstrip antenna.
Frequencyreconfigurable microstrip patch antennas with. A compact frequency reconfigurable unequal uslot antenna. Broadband microstrip antenna using variations of u slot has been widely reported. The frequency of operation of the patch antenna of figure 1 is determined by the length l. For design the proposed antenna the ushaped slot and a. Reconfigurable antennas frequency reconfigurable antennas polarisation. Modeling of pin diode in hfss and frequency reconfigurable antenna. However, in most of the reported work, an indepth explanation about the mode introduced by u slot and procedure to design u slot cut antennas at any given frequency is not explained. Lee, frequency reconfigurable uslot microstrip patch antenna, ieee antennas and wireless propagation letters, vol. Above concept is used in paper 6 and 4 to obtain multiband operation.
Sep 02, 2014 in this paper i am proposing a microstrip patch antenna which works on multi frequency 1. The patch antenna with adjustable air gap discussed in part 1 is an example of a frequency reconfigurable antenna, which was the first problem we worked on. Design and analysis of a frequency reconfigurable microstrip patch antenna. In the proposed design a rectang ular patch antenna with inverted u shaped slot at the center frequency 9. The simple design consists of two slots and two feeds. Frequency reconfigurable microstrip patch antenna for.
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. Antenna switching between four frequency bands isra nazir, inam elahi rana, noor ul ain mir, and kanwal afreen abstractan e. Designing for designing of a microstrip patch antenna, we have to select the resonant frequency and a dielectric medium for which antenna is to be designed. Design of frequency and patternreconfigurable wideband slot.
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