Design and fabrication of frequency reconfigurable and. Introduction recently, along with the rapid development of wireless communication technology. A polarization reconfigurable eshaped patch antenna with wideband performance is proposed. Design of polarization reconfigurable antenna using. A wideband polarization reconfigurable antenna array based. Geometry of a reconfigurable polarization patch antenna with loop slot on the ground. Introduction recently, a polarization reconfigurable antenna, which can offer various polarizations at the same operating.
A frequency tuning with polarization microstrip patch antenna design with varactor. Research article polarization reconfigurable patch antenna. The antenna design and experimental results are presented. Frequency reconfigurable uslot microstrip patch antenna. At the two rf ports an impedance transformer matches the 50. A miniature reconfigurable circularly polarized antenna.
To achieve these needs, the first solution is to design antennas with reconfigurable polarization and wideband characteristics 1,2,3,4,5,6,7,8. A polarization reconfigurable patch antenna with loop slots on the. To design a reconfigurable fourport network, the idea is to substitute the fixed lumped capacitors of the previous design by varactor diodes to get some. A polarization reconfigurable microstrip patch antenna. Eshaped patch antenna with reconfigurable circular. Polarization reconfigurable dualband rectangular slot antenna in. Polarization reconfigurable microstrip patch antenna is presented for. The antenna has the same radius r for the substrate and the ground. Rfmems reconfigurable uslotted patch antennas for dual. Polarization reconfigurable annular ring slot antenna design. The proposed design approach is based on the use of two pairs of switches in order to. In this letter, a novel reconfigurable patch antenna with polarization agility is suggested. Reconfigurable microstrip patch antenna with switchable plarization, etri tournal, 283, june 2006. Polarization reconfigurable patch antenna for wireless.
Synthesis of antennas for field and polarization control. A novel pattern and polarization reconfigurable wearable slot antenna suitable for smart glasses is proposed. Simple reconfigurable circularly polarized antenna at. The advantages of slotted ground plane are to omit the dc area and. Two antenna prototypes with identical dimensions are designed, fabricated and measured. Alternate feed methods a common variation in patch antenna design is the location and routing of the feed, to obtain a desired feedpoint impedance, to. Frequencyreconfigurable microstrip patch antennas with. Fries,mischa grani and rudiger vahdieck, a reconfigurable slot antenna with switchable polarization, ieee microwave and wireless components letters, 11 nov 2003. A function reconfigurable antenna based on liquid metal.
The antenna tuning is realized by changing its effective electrical length, which is controlled by the bias voltages of the solid state shunt switches along the slot antenna. Although the design is based on a resonant configuration, an effective bandwidth of 1. The reconfigurable antenna is composed of a square radiating patch, four varactor diodes, and two lumped capacitors. On the reliability of polarization estimation using rotation measure synthesis. What is the difference between slot antenna and patch. In 28, a ba ndwidth reconfigurable antenna was proposed. It consists of a square patch of side a printed on rt duroid substrate of. The first resonant frequency shifts down by varying. A ring slot antenna is a coplanar structure and as compared to a conventional microstrip antenna, it has the advantage that lumped. A reconfigurable slot antenna with switchable polarization, ieee microwave and wireless components letters, vol. To overcome these index terms eshaped patch antenna, microstrip antenna, pin diodes, polarization agile, reconfigurable antennas, rf switches. A frequency reconfigurable patch antenna design based on the characteristic mode analysis is presented. A slotted waveguide is a waveguide that is used as an antenna in microwave radar applications.
The antenna design is analyzed and optimized using agilent ads software. A simple design of circularlypolarized cp microstrip antennas with frequency agility is described. Reconfigurable microstrip patch antenna with switchable polarization. Magneticfield control of the electric polarization in bimno3.
The proposed arsa is able to switch among three polarizatio. Basic geometry and basic characteristics of patch antennas 3. A key issue is the codesign of fluidic actuation for tuning with a candidate tunable antenna topology. Two orthogonal slots are incorporated into the patch and two pin diodes are utilized to switch the slots on and off. The fundamentals of patch antenna design and performance. Reconfigurable antennas for wireless communications. A quadpolarization and frequency reconfigurable square. Research article polarization reconfigurable patch antenna for wireless sensor. Introduction reconfigurability has become a crucial feature in m odern wireless communication world. Polarization reconfigurable microstrip patch antenna is presented for 2. In that sense, our design is different than earlier reconfigurable designs. Besides, the modified corners of the uslot are used to reduce the loss and increase the gain of the proposed antenna. In 4, 5, polarization reconfigurable slot antennas are designed by using.
It is demonstrated that by introducing a reconfigurable cshaped slot in a circular patch antenna, the polarization of the radiation of the antenna, operating either in a linearly or circularly. Liang,polarization reconfigurable uslot patch antenna. Besides, positions of the pin diodes help that a bias circuit can be simply designed. Tarricone department of innovation engineering university of salento via monteroni, lecce 73100, italy abstracta recon. A bidirectional waveguide antenna with polarization. A slot antenna consists of a metal surface, usually a flat plate, with one or more holes or slots cut out. Pin diodes are appropriately positioned to change the length of the uslot arms, which alters the antennas polarization state. Circular polarization reconfigurable wideband eshaped patch. Survey on different types of reconfigurable patch antenna for wireless applications 1k. 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. Spin polarization control by electric field gradients. On the use of slots in the design of patch antennas.
Request pdf frequency reconfigurable uslot microstrip patch antenna a. The substrate used is fr4 with relative permittivity. Abstractthis paper reports a novel polarizationreconfigurable antenna array based on the theory of mode combination mc, which can electronically alter its polarization states between lefthand circular polarization lcp mode, righthand circular polarization rcp mode, and two combined linear polarization lp modes. To maximize the tunability range of the antennas frequency ratio, the unequal uslot is used on the patch.
Journal of electromagnetic waves and applications 20 10 pp. Design of a simple circularly polarized dualfrequency reconfigurable. Design of a dualband frequency reconfigurable patch. A compact frequency reconfigurable unequal uslot antenna.
Varactor diode loaded reconfigurable patch antenna with. When the plate is driven as an antenna by a driving frequency, the slot radiates electromagnetic waves in a way similar to a dipole antenna. Study of frequency and polarization reconfigurable on square. In this chapter a simple patch antenna to achieve the triple polarization is discussed. Different lengths of uslot on the center of patch can excite two cp. A microstrip patch antenna with reconfigurable polarization states among righthand circular polarization rhcp, lefthand circular polarization lhcp and two linear polarizations lp is proposed. When the switch is on the electrical size of antenna becomes small and it resonates at higher umts 2100 mhz band with circular. A reconfigurable patch antenna using switchable slots for. This codesign challenge makes it particularly hard to address bandswitching in circularly polarized. The antenna presents a reconfigurable lower band and a steady band at higher frequencies. Polarization reconfigurable uslot patch antenna ieee. Design of reconfigurable microstrip patch antenna for wlan. Many critical parameters affecting the axial ratio have to be considered during design of circularly. Ellipticalcircular polarization antenna is more sensitive than linearly polarized.
This paper proposes a simple polarization reconfigurable annular ring slot antenna arsa. A survey on polarization reconfigurable patch antennas. Reconfigurable patch antennas with fourpolarization. In this study, we propose a bidirectional waveguide antenna with polarization reconfigurable capability, and polarizations switchable among lhcp, rhcp, and lp are realized by selecting different feeding mechanisms, eliminating the need of struc. Design and analysis of compact u slot microstrip patch. Antenna geometry and design the geometry of the proposed uslot frequency reconfigurable antenna is shown in figure 1. Reconfigurable circular microstrip patch antenna with. Memsswitched uslotted patch antenna for dual polarization the geometry of the polarizationreconfigurable antenna is shown in fig.
The shape and size of the slot, as well as the driving. This paper proposes a polarization reconfigurable uslotted antenna which can switch between two orthogonal polarizations via cantilever switches loaded on portions of a slotted patch antenna. A novel design of a microstrip patch antenna with switchable slots pass is proposed to achieve circular polarization diversity. Figure 1 shows the design of the proposed antenna and its. The simple design consists of two slots and two feeds. Dual feed degenerate mode patch is used as the starting point for circular polarization and lshaped islands which can be connected or disconnected to the main patch via rf switches are placed around the patch. Microstrip patch antenna is mostly used in modern communication devices over conventional antennas mainly because of their size.
On the other hand, pindiodes are placed in between the patch and ground plane in 3. The proposed antenna consists of a circular patch of radius rp. Design of polarization reconfigurable antenna using metasurface. Polarization agile slotring array antenna using magict. Manikannan 1,2assistant professor, ck college of engineering and technology, cuddalore, tamil nadu abstract with the rapid advancement in wireless communication, reconfigurable antenna is gaining greater attention. A polarization reconfigurable patch antenna with electric current disturbance is. The two feeds are positioned on the right and left diagonal of microstrip antenna. Pin diodes are appropriately positioned to change the.
A square, loopshaped slot line that divides the patch conductor into interior and exterior sections is located at the centre of the square patch antenna. Polarization reconfigurable antenna for midband 5g. Introduction polarization recon gurable antennas are becoming increas. A reconfigurable patch antenna consisting of a square patch with two crossshaped diagonal slots is presented. This paper presents a dual band frequency and polarization reconfigurable microstrip antenna. These antennas, however, require complex feeding networks. Design of reconfigurable slot antennas ieee journals. When the equivalent capacitance values of the varactors are increased. Polarization reconfigurable circular patch antenna with a. A compact uslot microstrip patch antenna with reconfigurable polarization is proposed for wireless local area network wlan applications. In this paper, a new cp design for the ring slot antennas. The current distribution of an eshaped patch antenna in state 3 is shown in fig.
Study of frequency and polarization reconfigurable on. The bandwidth can be switched between ultrawideband and narrowband by connectingdisconnecting the ground plane using liquid metal. Another example is the design of a microstrip uslot patch antenna that can. Keywords reconfigurable microstrip patch antenna, slots, swi tches, dual band, resonant frequency.
With a coaxial probe, two orthogonal resonant modes of the square patch antenna are simultaneously excited. Frequency and polarization reconfigurable microstrip antenna. Array antennas adopted a wilkinson power divider and a power divider with a phase shifter to obtain a wide axialratio bandwidth arbw. Polarization reconfigurable patch antenna for wireless sensor. It is demonstrated that by introducing a reconfigurable cshaped slot in a circular patch antenna, the polarization of the radiation of the antenna, operating either in a linearly or circularly polarized mode, can be switched effectively. Polarization reconfigurable uslot patch antenna ieee journals. The antenna is designed and fabricated on glass and reconfiguration is realized using. In 29, a wideband frequency reconfigurable patch antenna with switchable slots based on liquid metal manipulation in 3dprinted microfluidic channels was. The polarization state can be determined by switching. Pdf polarization reconfigurable uslot patch antenna. Accordingly it is expected that a wideband polarization recon. Reconfigurable antennas frequency reconfigurable antennas polarisation. A reconfigurable patch antenna using switchable slots for circular polarization diversity.
Modified square slot antennas for broadband circular polarization. Circular polarization wideband eshaped patch antenna for. Survey on different types of reconfigurable patch antenna. The proposed antenna has stacked structure consists of a radiator with a ringslot and a cross slot, four pin diodes and a single feed line.