A novel meander line integrated ea wiley online library. A novel meander line microstrip logperiodic dipole antenna. The microstrip line fed patch antennas ensure several stunning properties. Hi all, i will like to know the basics of designing a meander line antenna.
In this paper, a novel meander line microstrip logperiodic dipole antenna for dualpolarized radar systems is presented and optimized, working in the reference frequency band 28ghz. The antenna has a simple feeding geometry, which is an integration of a hook shape feed line and four. Mutual coupling reduction between patch antennas using. Proper positioning of the coaxialfeed on the square patch excites two orthogonal resonant modes with 900 phase difference, and the pure circular polarization. The resonant frequency of the conventional meander line antenna can be achieved by. A meander antenna with reconfigurable polarization for. Meander line coupled cavitybacked slot antenna for. In 5, a meander line monopole patch antenna with microstrip line feed has been designed for wireless lte application. Design and analysis of a meander line cornered microstrip patch. Pdf meanderline polarizer for arbitrary rotation of. What i will also like to know is how skycross seem to be able to use this design technique to control the radiation patterns and obtain a broadbanddualabnd antenna with acceptable gain. The patch is of length l, width w, and sitting on top of a substrate some dielectric circuit board of thickness h with permittivity. The proposed antenna consists of a meander line patch printed on a fr4 substrate of dimension 46.
Meander line antenna is a type of the microstrip antennas. The validity of the antenna s performances is verified with a fabricated prototype. The crossrectangular slot provides necessary perturbation to excite dual orthogonal modes to generate the circular polarization. By connecting ground planes of the patch substrate and the feed substrate with the slot cavity leads to resonant frequency at low band. To receive the transmitted signal effectively, the polarization of the antenna must be matched with the polarization of the wave, which is the same as the polarization of the transmitting. Pdf design and analysis of a meander line cornered microstrip. Efficiency improvement and crosspolarization reduction of. Design and analysis of meander microstrip antenna at. A bandwidthenhanced, compact, singlefeed, lowprofile. A new compact folded patch gps antenna using meander line.
Section i provides the overview of microstrip meander line reconfigurable. Although it is characterized by wide band, its insertion loss. In iwasaki, 1996, a circularly polarized circular microstrip antenna with the centrally located crossslot in the patch conductor is introduced. This paper describes a new technique in reducing the cross polarization xp radiation in a rectangular microstrip patch antenna with elliptical defected ground structure dgs. Consider the microstrip antenna shown in figure 1, fed by a microstrip transmission line. A triangular patch antenna for uhf band with microstrip feed line for rfid applications twinkle kundu1 and davinder parkash2 1m. A novel meander line microstrip logperiodic dipole antenna for dual polarized radar systems. The crosspolarization radiation patterns of the leaky wave antenna with meander lines, circular lines, and circular lines loaded by the waim layer are illustrated in fig. A meander antenna with reconfigurable polarization for wireless. Us4191959a microstrip antenna with circular polarization. A novel meander line microstrip logperiodic dipole.
Most often, polarization control is achieved with a quarterwave plate which is one or several layers and the common structure is meander line. The use of dgs on the ground plane of the substrate is easy and can simply be applied in many microwave designs. Analysis and design of meander line dipole antennas. Global design of an ebg antenna and meanderline polarizer for circular polarization article in ieee antennas and wireless propagation letters 9. Circular polarization is generated by truncating two opposite edges from a circular patch antenna at 45 to the. A thin and broadband lineartocircular polarizer based on. Pdf design of a compact, high gain, efficient and low. A triangular patch antenna for uhf band with microstrip feed. The crossedelement, meander line loaded antenna according to claim 1, further comprising two or more meander line elements positioned at said side gaps.
Meander lines mls in two configurations are presented to reduce the mutual coupling mc between two microstrip patch antenna elements. Novel aperturecoupled microstripline feed for circularly. In this paper, a new feeding mechanism for patch antenna with circular polarization is proposed. Meander line is a kind of patch antenna and it was included in the literature in 1991 by rashed and tai. In the first configuration, one ml is inserted in the slot of the ground and a. This proposed structure only reduces cross polarization without affecting the characteristic impedance. Meandering the patch increases the patch over which the surface current flows. A novel meander line microstrip logperiodic dipole antenna for. A microstrip meander line reconfigurable antenna for wireless. Pdf a microstrip meander line reconfigurable antenna for. Click here to go to our page on circular patch antennas new for september 2018.
Miniaturized cross meanderline antenna etched on both sides. The microstrip format is the format of choice for modern rf electronics. The distance between the patch and the ground plane the. A versatile meander line polarizer is described and demonstrated for arbitrary rotation of linear polarization. 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 control the polarization, or for convenient layout. The meander line antenna concept is to fold the conductors back and forth to reduce antenna physical size. A meander lines coupled cavitybacked slot antenna with broadband circularly polarized cp property is investigated. Microstrip patch antenna mpa, and 2 inverted stacked microstrip patch antenna ismpa.
Nearzero metamaterial inspired uhf antenna for nanosatellite. The antenna is center fed and it is symmetric about its origin. A microstrip antenna is disclosed having an etched metal radiator element including a polarizing patch consisting of a two dimensional removal of metallization from the central portion of the radiator element with one dimension of the polarization patch being greater than the other dimension e. The proposed antenna is designed to have gain, directivity of 9. In our case, for the purpose of reducing the size of transponder, a meanderline antenna mla is an attractive choice. Microstrip patch antennas or simply patch antenna are increasingly useful because the antenna is printed directly onto a circuit board. As a result of this process, it is obtained that diminishing. In order to meet the demand of developing communication equipment the research of antennas focuses on some particular aspect, for instance, how to reduce the size of antennas while maintaining. A triangular patch antenna for uhf band with microstrip. Us6373446b2 narrowband, symmetric, crossed, circularly. This polarizer consists of eightlayer meander line grids with rigid foam spacers.
The basics of patch antennas, updated orban microwave. This paper describe the design,simulation and development of meander line microstrip antenna at wireless band, the antenna was. The fundamentals of patch antenna design and performance. One standard meanderline antenna and other two nonstandard meander antennas have been. The proposed antenna comprises four meander lines, a cavity, and a sequential rotation feed network.
Deschamps in 1953, but didnt become practical until the 1970s when it was developed further by researchers such as robert e. Use instead the duplicate along line and unit options on your rectangles. A high gain meander line cornered patch antenna is presented in this paper. A simple analytic formula, found in the literature for calculating the resonant frequency of a meander line dipole antenna mda in free space from its. Introduction of a novel technique for the reduction of cross. Their low profile design, often square or rectangular, allows them to be mounted to flat surfaces. Meander line antenna mla is an electrically small antenna which poses several performance related issues such as narrow bandwidth, high vswr, low gain and high cross polarization levels. A bandwidthenhanced, compact, singlefeed, lowprofile, multilayered, circularly polarized cp patch antenna is presented. The patch antenna, microstrip transmission line and ground plane are made of high conductivity metal typically copper. Soh designed a planer meander line antenna to operate in a frequency of. A planar invertedf antenna pifa is used for wireless circuitry implemented in microstrip. Additional benefits of patch antennas is that they are easily fabricated making them cost effective.
The first resonance of meander dipole antenna is at 200 mhz. Design and analysis of a folded meander dipole antenna using. Inserting a slot in the ground plane between the antenna elements is a simple method to reduce the mc, while adding the mls in the slot of the ground can further reduce the mc. This antenna is often built of printed circuit board material and the substrate makes up the patch antennas dielectric. A microstrip meander line reconfigurable antenna for. The meander line antenna was proposed by rasheed and tai for reducing the resonant length4. Dual band meander line antenna for wireless lan communication a. The dipolemeander class creates a meander dipole antenna with four dipoles. The operation of classic meander line is changed by two p i n diodes which helps antenna to resonate at different frequencies. Barros florida international university, 1991 miami, florida professor tadeusz babij, major professor the mininumerical electromagnetic code mininec program, a pccompatible version of the powerful nec program, is used to. Bandwidth enhancement of a dual band planar monopole antenna. In this paper, a classic meander line is investigated for a single band operation with wider bandwidth. The crossedelement, meander line loaded antenna according to claim 1, wherein said top member is secured to a dielectric material.
In our case, for the purpose of reducing the size of transponder, a meander line antenna mla is an attractive choice. A microstrip meander line reconfigurable antenna for wireless applications avinash kumar1, rajni2. Compact circularly polarized microstrip antenna with cross. Design of a compact, high gain, efficient and low cross polarization meander line cornered microstrip patch antenna with ebg structure for vsat applications. The prototype is proposed for wireless localarea network wlan applications in the 2. Some of the recent literature proposing the meandered line fed which is a type of microstrip line fed patch antenna has received potential interest among the researchers in antenna design since this technique is less cumbersome in widening the bandwidth of patch antenna. A cornertruncated patch is introduced as a nearfield resonant parasitic element directly beneath a specially engineered radiation patch. Crosspolarization reduction by using the circular lines and the anisotropic metasurface can be observed in these figures. In 6, polarization reconfigurable wideband eshaped patch antenna for wireless communication is proposed which is. The properties of the antenna such as bandwidth, beamwidth, gain, directivity, return loss and polarization were obtained. This letter presents a method of cross polarization suppression at lowelevation angle for a compact circularly polarized cp microstrip antenna. How to design a meander line in hfss it is too complicate to draw it with an equation base curve i guess.
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