The simple structure of this antenna contains a radiating circular patch, four switches pin diode, and a 50. Eshaped patch antenna with reconfigurable circular polarization for wireless applications ahmed khidre, kaifong lee, fan yang, and atef elsherbeni. A novel polarizationreconfigurable cut ring microstrip antenna with. Reconfigurable single port antenna with circular polarization diversity abstract.
Circular polarization is generated by an arcshaped slot on the ground plane. Reconfigurable singlefeed antenna with switchable polarization abstract. A reconfigurable magnetoelectric dipole antenna using. A dual polarized reconfigurable printed monopole antenna excited by single feed is proposed. Reconfigurability denotes the reconfigurable computing capability of a system, so that its behavior can be changed by reconfiguration, i.
Osman department of communication engineering, utm. This antenna has a simple structure, which consists of a radiating circular patch, five switches. A single feed microstrip patch can radiate circular polarization cp if two orthogonal patch modes tm 10 and tm 01 are simultaneously excited with equal amplitude and 90 out of phase with the sign determining the sense of rotation. A miniature reconfigurable circularly polarized antenna. Reconfigurable patch antennas with fourpolarization. A polarization reconfigurable microstrip patch antenna. This structure consists of a conventional monopole antenna fed by a microstrip transmission line. The antenna can switch between linear polarization lp, left hand circular polarization lhcp and right hand circular polarization rhcp. Polarization reconfigurable aperturefed patch antenna wei lin and hang wong department of electronic engineering and state key laboratory of millimeter waves hk. Pdf singlefeed polarization reconfigurable patch antenna. Singlefeed circular polarization microstrip antenna.
New design of a single feed reconfigurable circular patch antenna with polarization pattern diversity is presented. A microstrip patch antenna with reconfigurable polarization states among righthand circular polarization rhcp, lefthand circular polarization lhcp and two linear polarizations lp is proposed. A novel singlefeed circular microstrip antenna with. Geometry of a novel singlefeed circular microstrip antenna with re. In, the authors presented a singlefeed dualband microstrip patch antenna with switchable orthogonal lps. 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. The frequency and polarization agility is realized by varying the reactance of an embedded varactor at the center of the x. There are also antennas that can produce circular polarization also antenna polarization is a very important consideration when choosing and installing an the electric field or e plane determines the polarization or orientation of the radio wave orthogonally polarized antennas give rise to low correlation even if colocated.
The simple design consists of two slots and two feeds. A wideband polarization reconfigurable antenna with six. Its structure is simple and consists of a singlelayer singlefeed eshaped patch and two rf switches placed at appropriate locations in the slots. In this article, a microstrip line fed polarization reconfigurable dualband. In order to obtain polarization reconfigurability, several patch antenna. The antenna consists of a radiating patch incorporated with a. In this paper, the performance of graphene in patch antennas is investigated in order to control the antenna polarization.
Polarization reconfigurable patch antenna with electric current. A bent cross dipole with one pin diode inserted into each of its four arms is utilized to excite the antenna. This tunable hybrid can be used to feed a patch antenna via orthogonal slots etched in its ground plane. Singlefeed polarization reconfigurable patch antenna n. The dualfed antenna can operates on two orthogonal linear polarizations simultaneously and on two orthogonal circular polarizations alternatively by controlling the perturbation elements on a square patch antenna. Reconfigurable microstrip patch antenna with switchable. Rahmatsamii a reconfigurable patch antenna using switchable slots for circular polarization diversity ieee microw. A polarization reconfigurable patch antenna with loop slots on the. The antenna is capable of switching its polarization from right hand circular polarization rhcp to left hand circular polarization lhcp and vice versa.
By adjusting the bias voltage of the pin switch loaded on the. The proposed antenna consists of two pairs of bowtie dipoles, a pair of slim rectangle dipole and a metallic square reflector. A compact design of a single feed microstrip antenna for. Pdf a novel singlefeed circular microstrip antenna with. The circular patch is cut at the ends vertically and switches are introduced to connect the patch ends. Four identical notches with parasitic elements are embedded into the design.
Polarization reconfigurable patch antennas with four polarization agility are investigated in this paper. A novel circular polarization cp reconfigurable microstrip antenna is presented. With a coaxial probe, two orthogonal resonant modes of the square patch antenna are simultaneously excited. This static reconfigurability distinguishes between reconfiguration time and run time. Polarization reconfigurable square patch antenna for wireless. A reconfigurable circular patch antenna with switchable slits for polarization diversity mohamad n. Row singlefed microstrip patch antrenna with switchable polarization ieee trans. It consists of a square patch of side a printed on rt duroid substrate of. In order to switch the cp orientation, the current flow direction of the patch is reconfigured via the pin diodes mounted on the slot. The physical structure of the antenna is designed in such a way that only through the graphenes fermi energy level, righthand, lefthand circular polarization, and linear polarization.
Reference 4 proposes a reconfigurable singlefeed microstrip patch antenna with frequency and polarization diversities using some pin diodes and a uslot, incorporated into a square patch. Sensors free fulltext reconfigurable diplexerbased. Singlefeed polarization reconfigurable patch antenna core. A new reconfigurable singlefeed circular microstrip antenna with polarization diversity is proposed. Singlefeed polarization reconfigurable patch antenna. A polarizationreconfigurable highgain microstrip antenna ieee.
A simple design of circularlypolarized cp microstrip antennas with frequency agility is described. Circularly polarized single feed microstrip patch antennas. A singlefeed circular microstrip antenna with reconfigurable polarization capability is proposed. The polarization state can be determined by switching. It is easy for a singlefed patch antenna to activate circular polarization cp wave by a perturbing the path of the current on the antenna element in many ways. Polarization reconfigurable dualband rectangular slot antenna in.
When the switch is on the electrical size of antenna becomes small and it resonates at higher umts 2100 mhz band with circular. Polarization controling approach in reconfigurable. Frequencyreconfigurable microstrip patch antennas with. Circularly polarized single feed microstrip patch antennas are widely employed in radar, gps and mobile communication systems. Specifically, the proposed method imposes simultaneously the circular polarization condition as well as an arbitrary input impedance matching condition. When the equivalent capacitance values of the varactors are increased. This can be accomplished by perturbing the patch at appropriate locations with respect to the feed.
Mimos center of excellence, faculty of electrical engineering, universiti teknologi malaysia, 810 johor bahru. A quadpolarization and frequency reconfigurable square. The paper proposes polarization reconfigurable antenna that can change its polarization from left hand circular polarization lhcp to right hand circular polarization rhcp by using patch rotation technique. Pin diode can be used to achieve reconfigurability by placing it. Polarization reconfigurable microstrip patch antenna for. The reconfigurable antenna is composed of a square radiating patch, four varactor diodes, and two lumped capacitors.
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. Polarization reconfigurable microstrip patch antenna for wireless communication applications. However, all the antennas in 112 are designed for single band operations. This paper presents a simple and compact coplanar waveguide cpwfed circularshaped reconfigurable patch antenna with a switchable circular polarization cp sense. The antenna using reconfigurability alter its polarization between linear polarization lp, left circular polarization lcp, and right circular polarization rcp. Achieving 3db axial ratio bandwidth along with the 2. 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. A compact square patch antenna with reconfigurable circular polarization cp at 2. A novel singlefeed design of a patch antenna with \ud polarization reconfigurability is proposed in this paper. At the two rf ports an impedance transformer matches the 50. A novel singlefeed design of a patch antenna with polarization reconfigurability is proposed in this paper. The designed antenna is fed by dual vertical branches at the output port of the ron. The cp reconfigurable antenna is divided into three layers, composed of an annular radiating patch, ring slot, and reconfigurable orthogonal network ron.
Dualband reconfigurable antenna for polarization diversity. To the best of our knowledge, only two studies on polarization diversity between lps in antennas operating in a dual band have been published. Antenni polarisaatio, the polarization or polarisation. This paper presents a dual band frequency and polarization reconfigurable microstrip antenna. Polarization reconfigurable patch antenna for wireless sensor.
Vary its frequency between c and x frequency band achieving uplink and downlink frequency bandwidth of 1. 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 intentional redistribution of the rf currents over the antenna surface and produce reversible modifications of. A polarization reconfigurable patch antenna with electric current disturbance. However, since the frequency ratio was larger than 2 and the difference in the antenna. A reconfigurable circular patch antenna with switchable.
In this paper, a novel single feed frequency and polarization reconfigurable microstrip patch antenna is presented. Changing circular polarization states of a circularly polarized microstrip antenna can be achieved by employing two separate feeds one for each. Reconfigurable circularly polarized microstrip antenna on. Singlefeed circular microstrip patch antenna with diagonal slot for polarization reconfigurability has been proposed. A novel single feed frequency and polarization reconfigurable. Circular polarization reconfigurable wideband eshaped. In this paper, a single fed polarization reconfigurable antenna is proposed. Varactor controlled frequency and polarization reconfigurable microstrip antenna a simple patch antenna with an x. The two feeds are positioned on the right and left diagonal of microstrip antenna. A novel singlefeed circular microstrip antenna 631 fig. The radiating circular patch, printed on a thin substrate, is supported by non conductive posts on a conducting ground plane and is excited with a capacitively coupled feed.
A reconfigurable microstrip antenna for switchable polarization, ieee microwave and wireless components letters, vol. Reconfigurable singlefeed cp patch antenna design a compact frequency and polarization reconfigurable singlefeed circularly polarized cp patch antenna is presented as an application of the described microswitch. A singlefeed wideband polarization reconfigurable magnetoelectric dipole antenna is presented in this letter. A cpwfed reconfigurable patch antenna with circular. Abstract polarization reconfigurable patch antennas which can switch polarization states among vertical and horizontal linear polarization lp, left and righthand circular polarization cp is demonstrated in this paper. This antenna has a simple structure, which consists of a radiating circular patch, five switches pin diode, three matching stubs, and a 50 microstrip feed line. Eshaped patch antenna with reconfigurable circular. Pdf polarization reconfigurable uslot patch antenna.
A polarization reconfigurable microstrip patch antenna using pin. Frequency and polarization reconfigurable microstrip antenna. The original orthogonal linear polarized antenna is a square patch fed by two ports at the adjacent edges. A single feed reconfigurable polarization printed monopole. Reconfigurable circular microstrip patch antenna with. Dynamic reconfigurability denotes the capability of a dynamically reconfigurable system that can dynamically change its behavior.
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