Fries,mischa grani and rudiger vahdieck, a reconfigurable slot antenna with switchable polarization, ieee microwave and. Pdf a compact uslot microstrip patch antenna with reconfigurable polarization is proposed for wireless local area network wlan applications. Kishk published a paper on frequency reconfigurable uslot patch antenna. This paper presents a dual band frequency and polarization reconfigurable microstrip antenna. Actually, slot antenna is a radiating element formed by a slot in a metallic surface. Youngje, investigation into the polarization of asymmetrical feed. Jun 02, 2016 singlefeed circular microstrip patch antenna with diagonal slot for polarization reconfigurability has been proposed.
A polarization reconfigurable patch antenna with loop slots onthegroundplane. The simple design consists of two slots and two feeds. What is the difference between slot antenna and patch. It consists of a square patch of side a printed on rt duroid substrate of. What is the difference between slot antenna and patch antenna. Reconfigurable patch slot antenna for circular polarization diversity dr. The two feeds are positioned on the right and left diagonal of microstrip antenna. The novel geometry composed of a chinese character meng. When the switch is on the electrical size of antenna becomes small and it resonates at higher umts 2100 mhz band. To overcome these index terms eshaped patch antenna, microstrip antenna, pin diodes, polarization agile, reconfigurable antennas, rf switches. In this paper, a polarization reconfigurable uslot halfmode substrate. A transmit antenna needs a receiving antenna with the same polarization for optimum operation.
This polarization can be either vertical or horizontal depending on the orientation of the patch. A miniature reconfigurable circularly polarized antenna using liquid microswitches steven yee us navy steven. The proposed antenna has stacked structure consists of a radiator with a ring slot and a cross slot, four pin diodes and a single feed line. Abstracta compact uslot microstrip patch antenna with reconfigurable polarization is proposed for wireless local area network wlan applications. 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. At the two rf ports an impedance transformer matches the 50. A compact uslot microstrip patch antenna with reconfigurable polarization is proposed for wireless local area network wlan applications. Reconfigurable microstrip patch antenna with switchable polarization. Pdf design of polarization reconfigurable antenna using. In this paper, a novel low cost, singlefeed and polarization reconfigurable antenna is designed for midband 5g applications. Polarization reconfigurable microstrip patch antenna is presented for. Reconfigurable u slot patch antenna, antennas and propagation, ieee transactions on, vol.
On the use of slots in the design of patch antennas. Kishore kumar department of electronics and communications national institute of technology, tiruchirappalli620 015, tamil nadu, india. A microstrip patch antenna with reconfigurable polarization states among righthand circular polarization rhcp, lefthand circular polarization lhcp and two linear polarizations lp is proposed. The novel geometry composed of a chinese character meng shaped. Ieee transactions on antennas and propagation 58 10 pp. The polarization state can be determined by switching. Reconfigurable circular microstrip patch antenna with. On the other hand, pindiodes are placed in between the patch and ground plane in 3. The patch mentioned yields horizontal polarizati on, as shown. This letter proposes a reconfigurable microstrip patch antenna with polarization states being switched among linear polarization lp, lefthand lh and righthand rh circular polarizations cp. Rfmems reconfigurable uslotted patch antennas for dual polarization. Polarization reconfigurable antenna for midband 5g. Pin diodes are appropriately positioned to change the length of the uslot arms, which alters the antennas polarization state. 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.
Study of frequency and polarization reconfigurable on. An innovative technique is used in this approach which combines among three techniques namely. Polarization reconfigurable aperturefed patch antenna wei lin and hang wong department of electronic engineering and state key laboratory of millimeter waves hk. A reconfigurable microstrip patch antenna with frequency and polarization diversities is studied. Generally, circular polarization cp operations are preferred in most applications. A compact frequency reconfigurable unequal uslot antenna. In this paper, we introduce a reconfigurable artistic patch antenna with unidirectional circular polarization cp radiation.
Reconfigurable patch antennas with fourpolarization states. The antenna is fabricated on a taconic tlt substrate with a thickness of 1 mm and a relative permittivity of 2. Dual feed degenerate mode patch is used as the starting point for ci. A quadpolarization and frequency reconfigurable square ring. Wideband radiation reconfigurable microstrip patch antenna. Antenna reconfiguration is enabled with the aid of two rf switches inserted in appropriate locations on each slot of the eshaped patch. Frequency and polarization reconfigurable microstrip 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. Polarization reconfigurable uslot patch antenna semantic. Circular polarization reconfigurable antenna for midband 5g. Varactor diode loaded reconfigurable patch antenna with adjustable slots ritika tandon m. Research article polarization reconfigurable patch antenna.
Different lengths of uslot on the center of patch can excite two cp. A polarization recon gurable patch antenna with loop slots. 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. A polarization reconfigurable microstrip patch antenna. Circularly polarized singlelayer uslot microstrip patch antenna has been proposed. Polarization reconfigurable patch antenna for wireless sensor. Different lengths of uslot on the center of patch can excite two cp waves or one linear polarization lp and one. Design and analysis of compact u slot microstrip patch. Design of reconfigurable microstrip patch antenna for wlan. A miniature reconfigurable circularly polarized antenna. Circular polarization reconfigurable antennas have drawn lots of attention in recent years, since they have both the merits of circular polarization antenna capable of mitigating the multipath effect and flexibility in the orientation of the transmitting and receiving antennas, and reconfigurable antenna satisfy the requirements for increased functionality within a. Varactor diode loaded reconfigurable patch antenna with. Introduction this article introduces the basic concepts of patch antennas.
The basics of patch antennas, updated orban microwave. Aspire global international ltd or the company is a company registered in malta for the purposes of operating and offering of online and mobile application games polarization reconfigurable u slot patch antenna and sports betting services with registration number c42296 and registered office at 5 high street sliema malta. The antenna consists of a rectangular patch with a u slot, two varactors across the slot and an lshaped fed line. A circularpolarization reconfigurable meng shaped patch. Circularly polarized singlelayer u slot microstrip patch antenna has been proposed. Reconfigurable microstrip patch antenna with switchable plarization, etri tournal, 283, june 2006. The geometry of the proposed uslot frequency reconfigurable antenna is shown in figure 1. A polarization reconfigurable patch antenna with loop slots on the. It allows switching between right hand circular polarization rhcp and left hand circular polarization lhcp. Submission for 20 ieee aps student design challenge, reconfigurable antennas by prf team from nanyang technological university, singapore. A slot antenna consists of a metal surface, usually a flat plate, with one or more holes or slots cut out.
Two antenna prototypes with identical dimensions are designed, fabricated and measured. 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. Abstractthis paper reports a novel polarization reconfigurable 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. This paper proposes a polarization reconfigurable u slotted antenna which can switch between two orthogonal polarizations via cantilever switches loaded on portions of a slotted patch antenna. 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. Circular polarization wideband eshaped patch antenna for. In order to obtain polarization reconfigurability, several patch antenna configurations have been investigated 57. Polarization reconfigurable uslot patch antenna ieee. Memsswitched u slotted patch antenna for dual polarization the geometry of the polarization reconfigurable antenna is shown in fig. Memsswitched uslotted patch antenna for dual polarization the geometry of the polarizationreconfigurable antenna is shown in fig. Vahldieck, a reconfigurable slot antenna with switchable polarization, ieee microwave and wireless components letters, vol. Pdf polarization reconfigurable uslot patch antenna. A miniature reconfigurable circularly polarized antenna using. 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.
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. The polarization of the field radiated by this reconfigurable antenna can be configured into righthanded circular polarization rhcp, lefthanded circular polarization lhcp or linear polarization lp. The suggested asymmetrical uslot can generate the two orthogonal modes for circular polarization without chamfering any corner of the probefed square patch microstrip antenna. Reconfigurable patch antennas with fourpolarization. Somasekhar rao, air suspended uslot polarization reconfigurable microstrip antenna for wireless communication, international conference on antenna innovations and modern technologies iaim2017, during 2426 november 2017, bangalore, india. Parasitic stubs can be connected or disconnected to the patch by changing the working status of. Polarization reconfigurable circular patch antenna with a. A pattern reconfigurable uslot antenna and its applications in mimo systems. We use a simple rectangular, half wave long, probefed patch operating in its fundamental mode as an example. 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. Polarization reconfigurable patch antenna for wireless. Ieee transactions on antennas and propagation 58 10, 33833388, 2010.
Eshaped patch antenna with reconfigurable circular. A uslot is incorporated into a square patch, and a pin diode is utilized to switch the slot on and off, which realizes the. For example, when the component is a capacitor, the operation frequency of the slot antenna can be decreased with increasing the capacitance value 1. Slot antenna differs with patch antenna in many aspects. A novel reconfigurable microstrip patch antenna with frequency and polarization diversities is proposed.
A pin diode is placed on every slot to alter the current direction, which determines the. Reference 5 proposed a reconfigurable perturbed square slot antenna that could operate at lefthand cp lhcp, right hand cp rhcp, or lp. Pin diodes are appropriately positioned to change the length of the u slot arms, which alters the antenna s polarization state. 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. In 4, 5, polarization reconfigurable slot antennas are designed by using. Polarization reconfigurable patch antenna with electric current. Pin diodes are appropriately positioned to change the.
A polarizationreconfigurable filtering antenna system. A wideband polarization reconfigurable antenna array based on. Rfmems reconfigurable uslotted patch antennas for dual. Polarization reconfigurable memscpw antenna for mm. Introduction recently, a polarization reconfigurable antenna, which can offer various polarizations at the same operating. A square slot antenna can change between two linear polarization lp states by controlling the feed structure 4. Polarization reconfigurable dualband rectangular slot antenna in. Pin diodes are appropriately positioned to change the length of the u slot arms, which alters the antennas polarization state. The cp waves are excited by two perturbation elements of loop slots in the ground plane. Patch antenna is actually a patch antenna placed over a antenna base. Parasitic stubs can be connected or disconnected to the patch by changing the working status of the diodes 10. Introduction reconfigurability has become a crucial feature in m odern wireless communication world. Polarization reconfigurable circular patch antenna with a cshaped slot is proposed in this communication. Tejbir singh assistant professor, subharti university, meerut, u.
In this paper, we introduce a reconfigurable artistic patch antenna with unidirectional circularpolarization cp radiation. Study of frequency and polarization reconfigurable on square. The circular polarization has been obtained by the combination of vertical polarization by microstrip patch along. Vidmar, varactortuned microstrippatch antenna with frequency and polarisation. Abstract this letter presents a polarization reconfigurable memsintegrated coplanar patch antenna for mmwave applications. Fries,mischa grani and rudiger vahdieck, a reconfigurable slot antenna with switchable polarization, ieee microwave and wireless components letters, 11 nov 2003. A circularpolarization reconfigurable meng shaped patch antenna.
Polarization reconfigurable hmsiw uslot antenna semantic scholar. Polarization reconfigurable uslot patch antenna ieee journals. Patch antennas with controlled slots can also reach the aim of polarization reconfig uration. Vahldieck, a reconfigurable slot antenna with switchable polarization, ieee microwave and wireless components letters. The lumped component can be used to alter antenna performances. Abstract a varactor diode is placed on every slot to alter the current direction, which determines the polarization state. Research article polarization reconfigurable patch antenna for wireless sensor. A polarization reconfigurable, compactsized, lowprofile circularly polarized, omnidirectional antenna has been designed. Square microstrip antenna with frequency and polarization.
Pin diode can be used to achieve reconfigurability by placing it within the slot. The circular polarization has been obtained by the combination of vertical polarization by microstrip patch along with cshaped slot and horizontal polarization by. A wideband polarization reconfigurable antenna array based. A quadpolarization and frequency reconfigurable square. Polarization reconfigurable uslot patch antenna ieee xplore. A wideband polarization reconfigurable antenna with partially reflective surface.
The antenna consists of a rectangular patch with a uslot, two varactors across the slot and an lshaped fed line. Sep 01, 20 a square slot antenna can change between two linear polarization lp states by controlling the feed structure 4. A polarization reconfigurable patch antenna with loop. Polarization reconfigurable microstrip patch antenna is presented for 2. A compact u slot microstrip patch antenna with reconfigurable polarization is proposed for wireless local area network wlan applications. A polarization reconfigurable microstrip patch antenna using. 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. Polarization controlled microstrip antenna, ieee int.
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