Reconfigurable patch antenna by rf mems switches

This is accomplished by the activationdeactivation of rf mems switches. A novel multistate integrated rf mems switch for reconfigurable. Design of frequency reconfigurable micro strip patch antenna. A gps polarisation reconfigurable patch antenna has been experimentally investigated using rf mems switches. The rf mems switch plays a vital role in the pattern reconfigurable antenna.

Design of antenna the reconfigurable patch antenna can be designed using hfss software. This paper gives a brief account on the methodology of designing an antenna changing its frequency using rf mems switches. So rf mems cantilever switches with near zero power consumption, excellent linearity and low insertion loss provide a promising solution. Memsintegrated coplanar patch antenna for mmwave applications. Polarization reconfigurable memscpw antenna for mmwave. The latter can switch between orthogonal dualpolarization by changing slotted shape on it. Reconfigurable microstrip patch antenna for frequency. A novel microstrip antenna capable of changing frequency operation using rf mems switches is presented in this paper. In this article, a novel compact reconfigurable antenna based on substrate integrated waveguide siw technology is introduced. Design, analysis, and verification of kaband pattern. By changing the physical dimension of the antenna, its radiation pattern could be changed. Jan 01, 2008 read reconfigurable microstrip rectangular loop antennas using rf mems switches, microwave and optical technology letters on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. In this paper, the cantilever type rf mems switches are used as a connecting element between the antenna patches.

The rf mems switch is placed studying maximum surface current density distribution for individual. The model of a reconfigurable patch antenna with k and ku wave bands is set up. Cpwfed uwb reconfigurable antenna rf mems switch with x. A frequencyreconfigurable circularly polarized patch. The integration and use of rf mems switches in microstrip patch antennas and feed structures were investigated for developing reconfigurable multiband ant. Reconfigurable microstrip antenna array geometry which. Reconfigurable dual frequency microstrip patch antenna. Frequency reconfigurable patch antenna with bias tee for. The rf mems switch is made of an anchor, a beam, and a lg4 sector open stub. A novel multistate rf mems switch for microstrip antenna applications is presented.

The broadband operation of the antenna is obtained by employing two bandwidth enhancement techniques, which are patch tapering and the tshaped ground layer. So switching between the different frequency bands is achieved by using capacitive series rf mems switches. A reconfigurable antenna is an antenna capable of modifying its frequency and radiation properties dynamically, in a controlled and reversible manner. Behaviour of rf mems cantilever switch is simulated using comsol software. Pdf design, analysis, and verification of kaband pattern. Rf mems switches have been used broadly in reconfigurable antennas in. Rf mems switches have very low loss, they do not consume any direct current dc power, and their linearity is.

Reconfigurable dual frequency microstrip patch antenna using rf mems switches. A square patch antenna design was used, shown in fig. Reconfigurable microstrip patch antenna using mems. Kuband reconfigurable mems antenna on silicon substrate. This project proposes the design of a reconfigurable micro strip patch antenna using mems technology a reconfigurable microstrip patch antenna of operating frequency in the range of 58 ghzcband, for the application of wireless communication has been designed. The rpm utilizes one or more patch antenna elements in combination with mems switches to allow multifrequency reconfiguration. The proposed antenna structure comprises a center patch antenna known as driven patch and two adjacent microstrip patches defined as wing patches. Rf mems switches enabled hshaped beam reconfigurable antenna article pdf available in applied computational electromagnetics society journal 349. The proposed switch is indented to be built on pcb via a monolithic technology together with the antenna patches. This paper presents the analysis, design and simulation of an ohmic rf mems switch specified for reconfigurable microstrip array antennas built on pcb via an integrated monolithic technology. Reconfigurable dual notch band antenna on sisubstrate. A planar reconfigurable microstrip antenna is proposed by using rf mems switches. 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. Evaluation of modeling accuracy of reconfigurable patch antennas.

A dualband tunable rectangular slot antenna was presented in. Rf mems switch is an excellent choice for the implementation of reconfigurability in antenna due to its good electromagnetic characteristics. Aces revised copy dual frequency microstrip patch antenna. The switch uses coplanar waveguide transmission line for signal transmission, which designed with special mechanical structures, the size of the switch beam is 320. Reconfigurable patch antenna by rf mems switches abstract. Conclusions the design of a reconfigurable dual frequency microstrip patch antenna using rf mems switches. A frequencyreconfigurable circularly polarized patch antenna. It is shown that the fabricated rf mems components satisfy the design specifications and have better performance and reconfigurability capabilities compared to their. Frequency reconfigurable triangular microstrip patch. Reconfigurable patch antenna by rf mems switches request pdf. Introduction the concept of microstrip radiators is first proposed by. So switching between the different frequency bands is achieved by using capacitive series rfmems switches. The design of a reconfigurable antenna using rf mems switches could be implemented either based on the hybrid mode, that is using individual rf mems switches which should be bond in the pcb as shown in fig. Reconfigurable microstrip patch antenna using mems technology.

Empirical relations relating to the design for rectangular rings for desired frequency band are. In 7, bahram et al have used the siw antenna technologies with the rf mems switch in order to obtain the reconfigurable antenna by optimising the radiation pattern. This paper presents the design, analysis, simulation of a novel radio frequency micro electromechanical system rf mems switch on the frequency reconfigurable antenna application. Tunable microstrip patch antenna using rf mems technology. All the conductor patches and rf mems beams are made of aluminum. Mems integrated coplanar patch antenna for mmwave applications.

Rf mems switches enabled hshaped beam reconfigurable antenna. The design is based in an interconnected patch grid structure and employs a hybrid geometry with different sized patches in a biclustered distribution on order to reduce the structure complexity and the number of necessary switches. The switches are placed to connect the center patch with other two ones, with two switches on the top edge of the center patch and others on the bottom edge. Polarization reconfigurable memscpw antenna for mm.

Depending on whether the switches are closed or open they alter the patch size and thereby the resonant frequency of the antenna. The reconfigurability of the antenna is achieved by rf mems switches in order to switch between three public safety bands, which are centered around 160, 450, and 800 mhz. Kband, kuband and kaband by altering the states of rf mems switches. By implementing rf mems switch in the slot of a patch antenna achieves to make a change in the frequency of the antenna by switch action. A reconfigurable microstrip patch antenna with switchable slot has been designed, fabricated, and measured. A square patch antenna designed with four pairs of permanent shorting via for obtaining four different polarizations. Though several material selection strategies 69 have been developed in the past, the methodology for selecting the bridge material used in rfmems switches particularly. Switching between different frequency band is achieved using six rf mems switches. Reconfigurable microstrip rectangular loop antennas using rf. The rf mems switch is placed studying maximum surface current density distribution for individual notch bands to eliminate the interference independently. Microstrip antenna, reconfigurable antenna, rf switches, coaxial feeding, frequency diversity. So it is shown that the performance of an antenna depends vastly on rf mems switches which in turn depend on suitable material to be used for the switch. Memsreconfigurable antenna based on a multisize pixelled geometry d.

A frequency reconfigurable printed microstripfed patch antenna is proposed here. Frequency reconfigurable antenna using cantilever mems switches. The proposed switch will be used to allow antenna beamforming in the operating frequency range between 2. Rf mems based reconfigurable rectangular slotted self similar. The antenna was also located on a stacked high impedance surface his and its design and analysis was reported in 8. The return loss s 11 of reconfigurable antenna suggesting four modes of operation due to rf mems switch control is shown in fig. The proposed design consists of a single probe fed microstrip triangular, dielectric substrate with the thickness, 3. Frequency reconfigurable antenna using cantilever mems.

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. A miniature reconfigurable circularly polarized antenna using liquid microswitches steven yee us navy. On the design of an ohmic rf mems switch for reconfigurable. This paper proposes a radiating pattern reconfigurable antenna by employing rf microelectromechanical systems rf mems switches. Design of frequency reconfigurable micro strip patch. For the application of cognitive radio system a novel frequency reconfigurable eshaped patch design was proposed by zhu et al. This paper presents the analysis, design and simulation of a direct contact dc rf mems switch specified for reconfigurable microstrip array antennas.

In this paper, a reconfigurable microstrip patch antenna with rf mems switch providing frequency reconfiguration is presented. Switching between different frequency band is achieved using six rfmems switches. Hexagonal shape radiating patch with reconfigurable characteristics for wimax cwlan band is presented which is simulated on rt. The proposed antenna structure comprises a center patch antenna known as driven patch and two adjacent microstrip.

Memsswitched reconfigurable antennas ieee conference. Reconfigurable dual frequency microstrip patch antenna using rf. Antennas are often reconfiured g using rf mems switches or pin diodes 1,2. The antenna is capable to reconfigure up to three different frequency bands. Though several material selection strategies 69 have been developed in the past, the methodology for selecting the bridge material used in rf mems switches particularly. Citeseerx document details isaac councill, lee giles, pradeep teregowda. Mar 28, 2018 this paper presents the design, analysis, simulation of a novel radio frequency micro electromechanical system rf mems switch on the frequency reconfigurable antenna application. A frequencyreconfigurable circularly polarized patch antenna by integrating mems switches sunan liu, mingjer lee, changwon jung, g. By integrating rf mems switches into the design, a dual frequency patch antenna may be designed as shown in fig. In 7, bahram et al have used the siw antenna technologies with the rfmems switch in order to obtain the reconfigurable antenna by optimising the radiation pattern. A miniature reconfigurable circularly polarized antenna. This research presents innovative design of a compact reconfigurable microstrip patch antenna system using different rectangular rings. Reconfigurable patch module rpm concepts we now develop concepts for the reconfigurable patch modules rpms that are essentially the buildingblocks, or subarray elements, in a reconfigurable antenna. Reconfigurable siw antenna based on rf mems switches, saied.

Ka band frequency reconfigurable microstrip antenna based on. Rf mems switches for reconfigurable antennas a thesis submitted for the degree of doctor of philosophy by michail n. 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. Thanks to the high q of the mems switches, and to the fact that the switches are monolithically integrated, the antenna performance is not degraded. The proposed switch exhibits seven different states of operation, has a very. Reconfigurable siw antenna based on rfmems switches bahram khalichi, saied nikmehr, and ali pourziad department of electrical and computer engineering, university of tabriz, tabriz, iran abstractin this article, a novel compact recon. The antenna structure is composed of three rectangular patches and four radio frequency microelectromechanical system rf mems switches. Reconfigurable antenna design with rf mems switches has gain tremendous research interest 312. Dec 01, 2015 in operating as a reconfigurable multiband antenna, the switch is placed in between the dipole arm and the cshaped patch antenna for both elements. The upstate and downstate of cantilever beam of rf mems tunes the switch in on and off condition, respectively. Recent developments in reconfigurable and multiband. The antenna can operate in three frequency bands i. Ebel sensors directorate, air force research laboratory, hanscom afb ma 017312909.

A mems microelectromechanical systems rf radio frequency switch with the low loss and high isolation is presented. The frequencies can be switched by applicat ion of any rf or mems switches into the antenna. Cantilever mems bridges are introduced to provide to operate antenna either 21. The invention relates generally to antenna arrays, and more specifically, it a new reconfigurable microstrip antenna array geometry which utilizes microelectromechanical system mems switches to electrically connect groups of printed patch. A novel reconfigurable patch antenna for frequency diversity is proposed by reconfiguring its geometry using tree rectangular tapes that are connected to the patch via six rf mems switches.

Kaband radiation pattern reconfigurable microstrip patch. A novel rf mems switch on frequency reconfigurable antenna. Moreover, we present detailed structures of these rf mems switches, whose isolation and insertion loss are23. Micromachines free fulltext design, analysis, and verification of.

A reconfigurable multiband antenna for rfid and gps. A kaband microstip patch antenna with the functions of switchable pattern is presented. Pdf this article demonstrates reconfigurability in microstrip patch antenna using parasitic loaded rectangular patch connected via rf mems switches find. A ka band microstrip patch antenna utilizing rf mems switches is proposed and analyzed. The integration and use of rf mems switches in microstrip patch antennas and feed structures were investigated for developing reconfigurable multiband antennas. So it is shown that the performance of an antenna depends vastly on rfmems switches which in turn depend on suitable material to be used for the switch. So here we aim at creating a cantilever memsswitch enabled frequency reconfigurable antenna. Frequency reconfiguration of microstrip patch antenna with.

This is accomplished by the activationdeactivation of rfmems switches. Rf mems switches for antenna applications lavern a. The proposed design is analyzed in the frequency from 2 to 20 ghz. Frequency reconfigurable triangular microstrip patch antenna. The antenna can be used in applications requiring frequency diversity. These two switches are operated at the same time either switchon or switchoff ideal switches are designed in conneting two radiating patches for the simulation purpose using cst software. Keywords patch antennas, reconfigurable antenna, microswitches, electrowettingondielectric. The proposed antenna structure comprises a center patch antenna known as.

In this design, the frequency tuning was achieved by utilizing the rf mems variable capacitor on a stub as depicted in figure 1. Reconfigurable patch antenna by rf mems switches ieee. Kaband wideband pattern reconfigurable microstrip patch. This article describes the design of a microstrip patch antenna with radiation pattern reconfigurable characteristic, where two monolithically integrated mems switches are utilized. Reconfigurable antenna wikimili, the best wikipedia reader. Citeseerx on the design of an ohmic rf mems switch for. Design of reconfigurable microstrip patch antenna for wlan. Rf mems based reconfigurable rectangular slotted self. The former antenna is capable to operate at multiple frequencies by changing its patch size. Rf mems antennas for wireless applications sciencedirect. Microstrip antennas utilizing mems for reconfigurable. 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.

A novel reconfigurable mmic antenna with rfmems resonator. The shift in the frequency of the antenna is observed by integrating and actuating the different combination of cantilever switches. When the switches change to onstate, the slot length is reduced and the resonant frequency increases. Evaluation of modeling accuracy of reconfigurable patch. In operating as a reconfigurable multiband antenna, the switch is placed in between the dipole arm and the cshaped patch antenna for both elements. It can be observed that the sequential activation of the rf mems switches shifts the antenna resonance to lower frequencies. By changing the rf mems switches operating modes, the proposed antenna can switch among three radiating. The antenna has a low profile and small size of 4 mm. Rf microelectromechanical systems mems switches and reconfigurable microstrip patch antenna. Memsreconfigurable antenna based on a multisize pixelled. Frequency microstrip patch antenna using rf mems switches.