An electrically small cpw fed frequency reconfigurable antenna. It consists of a square patch of side a printed on rt duroid substrate of. A frequency reconfigurable patch antenna design based on the. A quadpolarization and frequency reconfigurable square ring. A new design of memsbased wideband frequency reconfigurable.
Reconfigurable single feed cp patch antenna design a compact frequency and polarization reconfigurable single feed circularly polarized cp patch antenna is presented as an application of the described microswitch. Frequency reconfigurable antenna using metasurface for. 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 wideband slot antenna with frequency and pattern reconfigurable characteristics for tdlte 3. It can be switched between four bands using two pin diodes by altering current distribution across the slot edges. Nandhini 2 1assistant professor, department of electronis and communi cation engineering, m. In this paper, a compact frequency reconfigurable circular patch antenna with an. The two varactors are located across the unequal uslot, which can switch six different frequencies between 2. A quadpolarization and frequency reconfigurable square. Survey on different types of reconfigurable patch antenna for.
Microstrip antenna, reconfigurable antenna, rf switches, coaxial feeding, frequency diversity. The width of microstrip feed line is w 3 mm and length is l 5. Design of frequency and patternreconfigurable wideband slot. For easy reconfigurable operation of the antenna, the patch antenna and ms are designed to have a circular shape and occupy the same area. The reconfigurable antenna is composed of a square radiating patch, four varactor diodes, and two lumped capacitors. Design and analysis of a frequency reconfigurable microstrip patch. The antenna presents a reconfigurable lower band and a steady band at higher frequencies. 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. The antenna is capable of frequency switching at nine different frequency bands between 1. Directional and bidirectional patterns are produced by the patch and slot, respectively. Frequency reconfigurable microstrip circular patch antenna. Wideband to concurrent triband frequency reconfigurable. Frequency reconfigurable microstrip patch antenna and its application in cognitive radio 16 3.
Here, frequency reconfigurable circular antenna design is used for the proposed method. 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 work on singlefeed frequency and polarization reconfigurable microstrip patch antenna is reported earlier 12. Three switches are used to produce six reconfigurable frequencies. Frequency reconfigurable patch antenna with bias tee for wireless. They are the original type of microstrip antenna described by howell in 1972. In the design procedure of the reconfigurable patch antenna, first, the inner patch antenna at 5.
This study focuses on a frequencyreconfigurable antenna that is designed into a multilayer structure stacked patch with considerably higher gain. Introduction reconfigurable antenna is used in the context of antenna,is the capacity to change an individual radiators fundamental operating characteristics through electrical,mechanical. Apr 01, 20 in this paper, a compact frequency reconfigurable unequal uslot antenna is achieved by changing the bias voltages of the two varactors. A reconfigurable stacked microstrip patch antenna for. As diode d1 is forward biased there is conducting path between parasitic patch length l1 and main patch length l hence the resonating frequency of the antenna is according to equivalent length of l1 and l and antenna have second resonance in the frequency range of 2. Frequency reconfigurable patch antenna with bias tee for. New radiation patternreconfigurable 60ghz antenna for 5g. A pattern reconfigurable antenna with multibeam reconfiguration for satellite communication has also been reported in 4. The design used with stubs are open, shorted and balanced stubs three stubs. In our model electric field lines, conductance and input resistance have obtained by transmission line model whereas. 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. Pdf a simple frequency reconfigurable microstrip patch antenna. Design of frequency and patternreconfigurable wideband. Microstrip patch antenna mpa for wireless communication.
A new micromachined wideband frequency reconfigurable microstrip patch antenna is demonstrated in this paper. Single feed reconfigurable circularly polarized microstrip patch antenna feeding with proximity coupled method 40 5. Introduction reconfigurability has become a crucial feature in m odern wireless communication world. Frequency reconfigurable microstrip patchslot antenna. The present paper demonstrates a frequency and polarization reconfigurable microstrip patch antenna with simple feed structure. A frequency reconfigurable antenna is presented with operating frequency as 3. It consists of a flat rectangular sheet or patch of metal, mounted over a larger sheet of metal called a ground plane. Simple systematic frequency reconfigurable microstrip patch.
Frequency reconfigurable microstrip patch antenna request pdf. An electrically small cpw fed frequency reconfigurable. Introduction the concept of microstrip radiators is first proposed by deschamps in 1953. Paper 9 presents a novel design of a frequency reconfigurable stacked patch microstrip antenna. An effective design of a novel, compact, single feed, dual patch frequency reconfigurable microstrip patch antenna mpa for wireless. In contrast, when feed 1 is off and feed 2 and the shorting pins are on, patch 1 is disconnected from feed 1, while. From 1999 until the present day, microstrip antenna has been used as a platform to design reconfigurable antenna 612.
The antenna has a rectangular patch with two meandered slots. Dual feed quadripolarization states microstrip patch antenna feeding with microstrip line 45 5. Keywords reconfigurable microstrip patch antenna, slots, swi tches, dual band, resonant frequency. The proposed design of frequency reconfigurable circular patch antenna is simulated on em simulation software. A frequency reconfigurable antenna array is presented.
In this, antenna two pin diode as used at center frequency 10 ghz of circular patch antenna with circular slot designed and simulated frequency reconfiguration is achieved in the frequency range of 9. The conventional staging of signs between components in cluster. Those switches are positioned in the slot places underneath the. 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. In 1999, a reconfigurable leaky patch antenna using pin diode was presented in 5. Thermal actuation is employed to precisely adjust the operating frequency with voltage ranges compatible with todays cmos circuitries. Figure 4 from design of reconfigurable fractal antenna using. In this article, a frequency reconfigurable fractal patch antenna using pin diodes is proposed and studied. This paper highlights the proposed design for a dual band frequency reconfigurable microstrip patch antenna fed through a 50. The proposed antenna is a combination of a microstrip patch and slot antenna. Reconfigurable microstrip patch antenna for wlan software. Citeseerx document details isaac councill, lee giles, pradeep teregowda.
Frequencyreconfigurable microstrip patchslot antenna. Five rf pin diode switches are positioned in the slot to achieve frequency reconfigurability. The work on single feed frequency and polarization reconfigurable microstrip patch antenna is reported earlier. The proposed antenna designs consist of a rectangular patch with microstrip feed line, and a partial ground plane. A wideband slot antenna with frequency and patternreconfigurable characteristics for tdlte 3.
A novel single feed frequency and polarization reconfigurable. Design of a dualband frequency reconfigurable patch. With a coaxial probe, two orthogonal resonant modes of the square patch antenna are simultaneously excited. A circular monopolar patch antenna, fed from center and surrounded by four sectorshaped patches, is presented in 2. Kumarasamy college of engineeringautonomous,karur, tamil nadu, india. In this microstrip antenna design multi frequencies are used. Frequencyreconfigurable microstrip patch antennas with.
Each corner is cutoff from the main patch through a narrow lshaped cut to get polarization reconfigurability. Thus, patch 2 is not electrically connected to feed 2 or ground. A compact frequency reconfigurable unequal uslot antenna. Pdf a reconfigurable microstrip antenna with switchable frequency is proposed. Study of frequency and polarization reconfigurable on.
The antenna consists of a microstrip patch and a slot in the ground. A square patch of side a is printed on rt duroid substrate. The antenna structure has been designed on fr4 lowcost substrate material of relative permittivity. A seriesfed microstrip patch array with interconnecting crlh. Simple systematic frequency reconfigurable microstrip. 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. Frequency reconfigurable tshaped microstrip patch antenna. Keywords varactor diode, circular patch, probe feed, frequency reconfiguration. In order to improve the bandwidth and gain of the antenna for wideband operation, the properties of jk inverter and split ring resonators are exploited.
Uwb frequency reconfigurable patch antenna for cognitive radio. Introduction due to requirement of integrating multiple wireless standards into a single wireless unit, reconfigurable antenna has attached a lot of attention. A frequency reconfigurable printed microstripfed patch antenna is proposed here. This could change the effective electrical length of the antenna and in turn the resonant frequency 58. The designed antenna operates at the expected 60 ghz 5g frequency band with a central coaxial probe feed. Rectangular patch shape technique is used for designing this microstrip antenna. Frequency reconfigurability can also be obtained by modifying feeding structure orand adding parasitic radiators. At the two rf ports an impedance transformer matches the 50. Patch antenna design step 2 ltheight 1mm l 30mm w 40. Hfss tutorial 2microstrip patch antenna with a cutting slot coaxial feed how to cut slot in patch duration. A reconfigurable antenna is an antenna capable of modifying its frequency and radiation properties dynamically, in a controlled and reversible manner. Design of reconfigurable microstrip patch antenna for wlan. A frequency reconfigurable patch antenna design based on the characteristic mode analysis is presented.
A frequency reconfigurable microstrip patch antenna is proposed. Omnidirectional microstrip patch antenna with reconfigurable pattern and polarisation. A slot is etched on the ground plane of the antenna, where two varactor diodes are placed on each side of the slot in order to tune the lower band. This antenna is capable of switching to four different frequencies 2. The antenna consists of a microstrip feed connected to a. Reconfigurable antenna provides a single antenna that can be used for multiple applications. There are 2pin diodes used in between the different slots to achieve frequency reconfigurability. Eight varactor diodes are used to bridge the gaps between the. Typically a seriesfed array consists of a single feed point and the radiating elements are connected in series with a feed network which consists of transmission lines that are a particular factor of wavelength of the operating. Micro strip antennas consist of a patch of metallization on a grounded substrate.
Frequency reconfigurable circular patch antenna with an arc. Frequency reconfigurable microstrip rectangular patch antenna using stubs the frequency reconfigurable microstrip antenna is connected to a feed line and two electronic switches. Frequencyreconfigurable stacked patch microstrip antenna. A simple design of circularlypolarized cp microstrip antennas with frequency agility is described. Reconfigurable beam steering using circular disc microstrip patch antenna with a ring slot is proposed. The first resonant frequency shifts down by varying. The microstrip rectangular structure as shown in fig. A patch antenna is a type of radio antenna with a low profile, which can be mounted on a flat surface. The patch antenna is proposed to tune between two frequencies, i. Study of frequency and polarization reconfigurable on square. The back feeding port is located in the symmetry axis and 7 mm away from. In this paper, the detailed design and analysis of frequency recon.
Multiband, frequency reconfigurable, and metamaterial. Two pin diodes are loaded in the slots to produce two different frequency bands. Frequency reconfigurable microstrip patch antenna for. This paper proposes a novel wideband to concurrent triband frequency reconfigurable microstrip antenna. A miniature reconfigurable circularly polarized antenna. The center of edges of two stubs far away from the feed point is connected to ground via another two diodes, while those of the other two stubs are connected to ground via capacitors. The reconfigurability of frequency is presented by incorporating pin diode, in series, to switch the successive operating frequencies considerably by changing the antenna effective length. A simple, efficient, reconfigurable sweeping frequency, single feed, fork shaped microstrip antenna is presented in this paper. Frequency reconfigurable microstrip patchslot antenna with. 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 tunable antenna system is fabricated by a combination of surface and bulk micromachining processes. A k band patch antenna with reconfigurable frequency and polarization properties is proposed by benjamin rohrdantz et al.
Design of a dualband frequency reconfigurable patch antenna. The array consists of eight arms with two different feed networks. The antenna consists of two symmetric slots that are fed by a forkshaped microstrip line. Reconfigurable patch antenna, fr 4 substrate, frequency.
It can switch between linear polarization lp, rhcp and lhcp at dual frequency. Survey on different types of reconfigurable patch antenna. A seriesfed microstrip patch array with interconnecting. When the equivalent capacitance values of the varactors are increased. Frequency reconfigurability is achieved by connecting an additional small patch to the main patch through a pin diode. Abstractan effective design of a novel, compact, single feed, dual patch frequency reconfigurable. Design and analysis of a frequency reconfigurable microstrip. Design of frequency reconfigurable frms antenna is a patch antenna mestsurfaced antenna the frms antenna proposed here consists of a patch antenna as the source antenna and a metasurface ms. A novel reconfigurable microstrip fed patch antenna with polarization agility in either of two bands is proposed in this communication.
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