In practice, the matching may be sufficient for the intended antenna purpose. Download citation design and analysis of a frequency reconfigurable microstrip patch antenna switching between four frequency bands an. The proposed antenna is a reconfigurable antenna with different slots. Sep 18, 2017 the geometrical structure of the proposed frequency reconfigurable log periodic microstrip dipole array antenna 2 is shown in figure.
The reference antenna is based on a meander patch structure radiating at f 1 0. The proposed antenna is based on a monolithically integrated grid structure of movable nickel ni and fixed copper cu patches. Antenna radiation pattern is measured in patch hplane yzplane in fig. At the two rf ports an impedance transformer matches the 50. A single dc voltage applied on two varactors is used to control the working frequencies of the proposed antenna. It operates with two orthogonal 45 slanted linear polarisations and can produce two like radiation patterndipole s. Three switches metal strips are used as switch are placed in the slot. If you choose to copy the antenna then make sure its as close to the original as possible. Frequency reconfigurable uslot microstrip patch antenna. The third antenna is a polarization reconfigurable cross patch antenna that uses egain as a switch to alter its polarization. A frequency reconfigurable transmitter antenna with. By altering the bias voltage, the working frequency of the proposed antenna can be continuously changed within a wide range from 2. Resonance frequency ims11 0 is about 5 ghz, but radiation resistance is z0, not matched.
In this communication, an autonomous frequency reconfigurable antenna. A lowprofile frequency reconfigurable gridslotted patch. Following equations or formula are used for this microstrip patch antenna calculator. The frequency reconfigurable log periodic microstrip dipole array operated over c,x and ku bands has been designed and simulated by ansys hfss. The antenna consists of an hshape radiator and a cpw printed on a pcb and a varactor diode. In thus paper a yagi uda shaped frequency reconfigurable microstrip patch antenna is presented. A patch antenna is a type of radio antenna with a low profile, which can be mounted on a flat surface. Reconfigurable patch antennas have drawn a lot of research interest for future wireless. Frequency reconfigurable uslot microstrip patch antenna abstract. In this work, a frequency reconfigurable antenna with a bar6302v positiveintrinsicnegative pin diode is designed, simulated and fabricated. Omnidirectional microstrip patch antenna with reconfigurable pattern and polarisation. Following are the disadvantages of microstrip antenna. The fabrication of proposed structure is executed by using of pcb prototype.
The proposed switch will be used to allow antenna beamforming in the operating frequency range between 2. A novel reconfigurablepatch antenna with both frequency and polarization diversities was studied in 18. Advantages and disadvantages of microstrip patch antenna. A quadpolarization and frequency reconfigurable square ring. An independentmultiband antenna, fed by a cpw with finite lateral strips, for wlan applications was. Pcb trace antennas, more specifically the fantenna also called pifa, is a simple antenna to tune. A switchable quadband antenna has been proposed by using microelectromechanical systems mems switch 3. It is found that the incorporation of a uslot in the patch can provide a flat input resistance and a linear input reactance. This application requires a great number of these switches to be integrated with an array of microstrip patch elements. It consists of radiating patch on one side of a dielectric substrate having a ground plane on other side.
Design and analysis of a frequency reconfigurable microstrip. A compact frequency reconfigurable antenna for lte mobile. The antenna is capable of frequency switching at nine different frequency bands between 1. The switches are incorporated into the diagonally fed square patch for controlling the operation frequencies. The antenna presented in 6 is shown in figure 4, it consists of a radiating circular patch with a slot below the circular patch. Frequency reconfigurability can also be obtained by modifying feeding structure orand adding parasitic radiators. Everything can be done by varying the length of the tail.
The silicon radiator is activated with the aid of highly dense solidstate plasma by injecting carriers into the. The reconfigurable proposed antenna consists of parallel. Sreedhar kumar et al frequency reconfigurable triangular microstrip patch antenna for wireless applications 278 international journal of computer systems, issn23941065, vol. An omnidirectional microstrip patch antenna, capable of reconfiguring both polarisation and radiation pattern is proposed. Microstrip patch antenna is used in mobile handset due to simple look, lower cost, small size and light in weight. The proposed switch will be used to allow antenna beamforming in the operating frequency range between 2ghz and 4ghz. Frequency reconfigurable triangular microstrip patch antenna. Antenna covers the various wireless standards wlan, wimax, wifi and uwb with return loss s11 printed circuit board, with a continuous metal layer bonded to the opposite side. This antenna is capable of switching to four different frequencies 2. Five rf pin diode switches are positioned in the slot to achieve frequency reconfigurability. Polarization reconfigurable microstrip phased array. Abstract a reconfigurable microstrip patch antenna with rf pin diode.
The simulation results shows that the proposed antenna array can be successfully used as ultrawide band antenna over frequency range from 4 ghz to 18 ghz. A frequency reconfigurable dipole antenna with solidstate. A frequency reconfigurable dipole antenna based on a silicon radiator is presented. This application requires a great number of these switches to be integrated with an array of microstrip patch.
An ohmic rf mems switch for reconfigurable microstrip. The second antenna is a frequency reconfigurable dipole antenna that uses egain as a radiating element to change its resonance frequency by contracting and expanding the length of egain. Experimental results show that the system can work with different. Since the two ends of the patch are open, an openend correction is usually taken into account while calculating the physical length l of the patch. Microstrip antennas are planar resonant cavity that leak from their edges and radiate em waves. Above concept is used in paper 6 and 4 to obtain multiband operation. Another frequency band reconfigurable patch antenna is proposed that operate in. The most common version of printed antenna is microstrip antenna, which consists of a metallic patch above a ground plane. A reconfigurable patch antenna integrated by using rfmircoelectromechanical system mems switches is presented. Reconfigurable microstrip monopole patch antenna with. The proposed switch is indented to be built on pcb via a monolithic technology together with the antenna patches.
A patch antenna, which is also known as a micro strip antenna, can be fabricated with standard printed wiring board pcb processes using high frequency laminate materials. Reconfigurable rf energy harvester with customized. Reconfigurable can be attached with pin diodes and varactor diodes but in this proposed antenna fixed patches had been used to achieve frequency reconfiguability. This means trace width, spacing, the feed line from your driver etc, even the pcb manufacturing process might make a difference. Frequency reconfigurable multiband meander patch antenna. An antenna can be as simple as a retangular patch above a ground plane or as elegant as a complex array of patches, customized for a specific radiation pattern. It consists of a square patch of side a printed on rt duroid substrate of. A frequency reconfigurable antenna is presented with operating frequency as 3. In this paper, a compact frequency reconfigurable circular patch antenna with an. The frequency of operation of the patch antenna of figure 1 is determined by the length l. The main aim of this antenna design is to be used for reconfigurablity with size of 50 x 50mm 2. Frequency reconfiguration mechanism of a pin diode on a. Frequency reconfigurable microstrip patch antenna for.
Frequency reconfigurable patch antenna using pin diode at. Design and implementation of reconfigurable antenna. The microstrip patch antenna can operate in four di. The proposed antenna radiates a righthand circularly polarised wave at the selected dual frequencies 4. The twosided pcb substrate used is rogers rtduroid 5880. Reconfigurable microstrip patch antenna for wlan software defined. Introduction reconfigurable antenna is used in the context of antenna,is the capacity to change an individual radiators fundamental operating characteristics through electrical,mechanical. Frequency reconfigurable multiband meander patch antenna for cognitive radio with. Frequency reconfigurable multiband meander patch antenna for. Magneticallyactuated micromechanical nickel patches for a. They are the original type of microstrip antenna described by howell in 1972. For the novel frequency and pattern reconfigurable yagiuda patch antenna detailed in.
Frequency reconfigurable circular patch antenna with an arc. By definition, a printed antenna is one that is fabricated using standard photolithography technique. Two different configurations are studied with dualband behavior. A novel reconfigurable patch antenna with both frequency and polarization diversities was studied in 18. The proposed antenna design is capable of electronically rejecting various groups of operating frequency bands according to the surrounding interference. 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. These capacitors and two resistors used as jumpers tune the pcb antenna to work well on the chosen frequency. The frequency tuning was produced by inserting a pin diode and a varactor diode into a meander. Jul 27, 2010 pcb trace antennas, more specifically the f antenna also called pifa, is a simple antenna to tune. It offers low efficiency due to dielectric losses and conductor losses. Microstrip patch antenna calculator patch antenna formula. 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. The dropouts guide to pcb trace antenna design colin.
This is accomplished by slicing your antenna to various lengths with an exacto knife. Paper 9 presents a novel design of a frequency reconfigurable stacked patch microstrip antenna. Nilavalan and sindos thessaloniki, title on the design of an ohmic rf mems switch for reconfigurable microstrip antenna applications, journal wseas transactions on communications, year 2009, pages 153161. The rectangular patch antenna is simplest form of patch antenna as shown in fig. The spurious radiation exists in various microstrip based antennas such as microstrip patch antenna, microstrip slot antenna and printed dipole antenna. The conventional staging of signs between components in cluster. Two antenna configurations that resonate at 8 ghz and 10 ghz have been designed and with a reconfigurable double stub tuner each has been implemented.
A comparitive study of four different shaped frequency. Antenna switching between four frequency bands isra nazir, inam elahi rana, noor ul ain mir, and kanwal afreen abstractan e. Reconfigurable patch antenna, fr 4 substrate, frequency. On the design of an ohmic rf mems switch for reconfigurable. Pdf frequency reconfigurable patch antenna with bias tee for. Design and analysis of a frequency reconfigurable microstrip patch. A microstrip monopole reconfigurable antenna is presented in 11. A frequency band reconfigurable antenna is designed and experimentally analyzed. Evaluation of modeling accuracy of reconfigurable patch. The shape and size of patch determine the frequency of. Design of frequency reconfigurable multiband meander antenna. Antennas using patches as constitutive elements in an array are also possible. Abstractevaluation of frequency reconfigurable patch antennas for multistandard personal communication systems, using pin diodes as switches. Reconfigurable dualband antenna with high frequency ratio.
The above equation says that the microstrip antenna should have a length equal to one half of a wavelength within the dielectric substrate medium. Reconfigurable triband hshaped antenna with frequency. Design and analysis of frequency reconfigurable log. Frequency reconfigurable uwb antenna design for wireless. Microstrip patch antenna mpa for wireless communication systems is. This antenna does not take any much extra size and can be etched on the same mobile pcb itself. Frequencyreconfigurable microstrip patchslot antenna. The ifa was designed to match an impedance of 50 ohm at 2. For design of reconfigurable antenna we use microstrip patch antenna. In this work, a radio frequency rf energy harvester comprised of a differential radio frequencytodirect current rfdc converter realized in st nm complementary metaloxidesemiconductor cmos technology and a customized broadband printed circuit board pcb antenna with inductive coupling feeding is presented. An annular slot rectangular patch antenna is used and a gap of 2mm is used to attach pin diode. Citeseerx document details isaac councill, lee giles, pradeep teregowda. Citeseerx on the design of an ohmic rf mems switch for. Aces revised copy dual frequency microstrip patch antenna.
In the proposed design, a circular patch antenna with circular slot using two pin diodes at the centre. A frequency reconfigurable printed microstripfed patch antenna is proposed in. It consists of a flat rectangular sheet or patch of metal, mounted over a larger sheet of metal called a ground plane. A frequency reconfigurable microstrip patch antenna is presented. Application note an043 4 antenna design the pcb antenna on the cc2511 usb dongle reference design is a meandered inverted f antenna ifa. This paper presents the analysis, design and simulation of a direct contact dc rf mems switch specified for reconfigurable microstrip array antennas. Liquid metal reconfigurable antennas a thesis hong pan master. Frequency reconfigurable microstrip circular patch antenna.
Frequency reconfigurable log periodic microstrip dipole. The length l of the patch radiator is then selected such that it satisfies the condition of resonance. The design of a reconfigurable dual frequency microstrip patch antenna using rf mems switches has been established and the minimum number of switches required has been determined. The most common type of microstrip antenna is the patch antenna. An ohmic rf mems switch for reconfigurable microstrip array. Microstrip patch antenna radiates due to the fringing fields between the patch edge and ground plane. 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. A large number of frequency reconfigurable antennas with slots in their. The center frequency will be approximately given by. There are 2pin diodes used in between the different slots to achieve frequency reconfigurability. Raoa quadpolarization and frequency reconfigurable square ring slot loaded microstrip patch antenna for wlan applications aeu int j electron commun, 78 2017, pp.
Frequency reconfigurable tshaped microstrip patch antenna. The proposed reconfigurable antenna has four patches designed to cover the frequency band from 1. New design for compact reconfigurable microstrip monopole patch antenna with ultrawideband uwb operation for wireless communication is presented in this paper. Omnidirectional microstrip patch antenna with reconfigurable.
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