Design of meanderline antennas for radio frequency. A novel meander line microstrip logperiodic dipole. Recently, a meanderline slot mls has been applied to microstrip patch antennas for miniaturization and multiband operation. The proposed antenna employs meander line technology and matched loads. If the ratio lw is close to unity, the radiation pattern will be symmetric but may not provide a resonable input impedance. It is not easy to obtain a good impedance by selecting the position of the shorting posts. In the first configuration, one ml is inserted in the slot of the ground and a. Meander line is a kind of patch antenna and it was included in the literature in 1991 by rashed and tai. The antenna of the present invention can achieve an operating frequency range of 100. Design of meander line antenna for operating frequency of.
As a result of this process, it is obtained that diminishing. The 3d view for gain of meander line antenna is also shown in fig. 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. Although the line techniques can successfully rewx duce the transverse size of the antenna, the longitudinal size is still large. The antenna was simulated on a rogers rtduroid 5880 substrate with. Circular shaped fractal pifa antenna provides high efficiency and gain 7.
The initial length of meander line is 9 mm and it reduced to 8 mm or 7 mm. The antenna characteristics before and after applying a meander line slot are numerically investigated. Meanderline slotloaded highsensitivity microstrip patch. Us6373440b2 multilayer, wideband meander line loaded. Meander line antenna with artificial magnetic conductor. A meander line loaded antenna provides a wide instantaneous bandwidth with a first planar conductor extending orthogonally from a ground plane, a second planar conductor substantially parallel to the ground plane and separated from the first planar conductor by a gap, a meander line interconnecting the first and second planar conductors across the gap, and a third conductor connecting the second planar conductor to ground. The dipolemeander class creates a meander dipole antenna with four dipoles. Soh designed a planer meander line antenna to operate in a frequency of 2. Pdf design and analysis of a meander line cornered microstrip. Design and analysis of a meander line cornered microstrip patch. Meander line slot is loaded to the antenna patch to reduce the dimension of the proposed antenna design. Section i provides the overview of microstrip meander line reconfigurable. One standard meanderline antenna and other two nonstandard meander antennas have. The objective of paper is to design a meander line antenna for wlan application that is 2.
Hello hanaf meander line antennas are normally lambda2 or lambda4 antennas. The antenna has shown significantly size reduction in comparison to a conventional microstrip patch antennas. The former one is more dominated because the meander line is coupled via non radiating edge of the patch antenna. A patch antenna is a narrowband, widebeam antenna fabricated by etching the antenna element pattern in metal trace bonded to an insulating dielectric substrate, such as a printed circuit board, with a continuous metal layer bonded to the opposite side. The meander line antenna was proposed by rasheed and tai for reducing the resonant length4. What is meander line antenna meander line patch antenna. The operation of classic meander line is changed by two p i n diodes which helps antenna to resonate at different frequencies. A capacitive load cload and parasitic patch with the shaped ground are applied to the.
The coupling element and meander line antenna affect size of antenna and radiation efficiency in antenna structure, it has been introduced in background 36. A novel electrically small compact meander line antenna is reported. In this paper, a classic meander line is investigated for a single band operation with wider bandwidth. This paper presents optimization problem formulations to design meanderline antennas for passive uhf radio frequency identification tags based on given specifications of input impedance, frequency range, and geometric constraints. By using the patch antenna the return loss, gain, directivity. Conception of patch antenna at wide band okeefe proposed a new meander line dipole where they applied three methods to calculate the efficiency of. Experimental results and validation todetermine if thedesign in fig. Hi all, i will like to know the basics of designing a meander line antenna. Meandering the patch increases the patch over which the. Analysis and design of meander line dipole antennas. Meander line loaded tunable patch antenna wo2002060007a1 en 20010125. It might be noted that the coupling between patch and meander line resonator is a combination of inductive lc and capacitive cc coupling as shown in section 3 of figure 5. It consists of a monopole antenna running parallel to a ground plane and grounded at one end.
Design and simulation of meander line antenna for wireless. Design of meandered pifa antenna for wireless application. The design has two advantages over a simple monopole. Design of a miniaturized meandered line antenna for uhf. The patch antenna, microstrip transmission line and ground plane are made of high conductivity metal typically copper. Design and analysis of a folded meander dipole antenna. The microstrip patch antenna calculator determines the length l and width w of a rectangular microstrip patch antenna for a given resonant frequency or vice versa. Compared to the reference antenna design, using a meander line slot loaded to the antenna patch, it can achieves several performance. The resonant frequency of the conventional meander. Pdf design of meander slotted patch antenna for wireless. The antenna consists of a meander line which acts as a capacitively loaded patch. Pdf this paper presents the design and mathematical analysis of a fully efficient meander line edged microstrip patch antenna with square. To determine the layout of the array and achieve the required antenna impedances and interconnecting crlh transmission line lengths, the simulation tool momentum in the advanced design system ads software 14 was used.
The thickness of the ground plane or of the microstrip is not critically important. The patch is of length l, width w, and sitting on top of a substrate some dielectric circuit board of thickness h with permittivity. Design of a meandered line microstrip antenna with a. In the proposed antenna, the linearly polarized meandered line acts as the main radiator whereas the inverted cshaped patch acts as a parasitic element. Modern uwb antennas and equipment where cc and cd are expressed in terms of line width w, substrate thickness d, and relative permittivity.
Bandwidth enhancement of a dual band planar monopole. The design of meander line antenna is a set of horizontal and vertical lines. Combination of horizontal and vertical lines forms turns. The coupling aperture is usually centered under the aperturecoupled feedpatch, leading to lower cross.
The antenna is fed from an intermediate point a distance from the grounded end. By inserting the meander line resonator between the patch antennas with the edgetoedge distance less than. Us6404391b1 meander line loaded tunable patch antenna. What is meander line antenna meander line patch antenna youtube.
A detailed analysis is done in terms of different substrates and thickness. The microstriplinefed patch antennas ensure several stunning properties. Design and comparative study of meander antenna and microstrip. Meander line antenna is a type of the microstrip antennas. The implementation of a slotted meanderline resonator smlr is done by creating defect in the microstrip structure particularly designed for bandnotch function. The meander line loaded tunable patch antenna has physical dimensions much smaller than one quarter wavelength at a predetermined operating frequency and is tuned by selectively electrically adding and removing at least one of the portions of the meander line using the meander line switching means. 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. A triangular patch antenna for uhf band with microstrip. A novel meander line microstrip logperiodic dipole antenna for dualpolarized radar systems lizhong song1, yuming nie2,andjunwang1, abstracta novel logperiodic dipole antenna for dualpolarized radar systems is presented.
Electrical small meander line patch antenna ieee conference. Coupling between the patch and the feedline is made through a slot or an aperture inthe ground plane. Cad of microstrip antennas for wireless applications sainati. Size reduction and bandwidth enhancement of aperture.
A capacitive load cload and parasitic patch with the shaped ground are applied to. The resonator is designed to block the surface current at the resonant frequency of the two patch antennas coupled along hplane and operating at a frequency of 4. The first resonance of meander dipole antenna is at 200 mhz. Meander line antenna is the most usage of antenna that use in design of the applications such as rfid and wlan. 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.
Pdf a modified meander line microstrip patch antenna. The gain of the antenna is efficient for meander line antenna to operate well at 2. In this article, the design and analysis of a meandered line monopole antenna with a defected ground structure dgs for rfid applications are investigated. An invertedf antenna is a type of antenna used in wireless communication. What is meander line antenna meander line patch antenna antenna basicantenna theory duration. Analysis of single band and dual band graphene based patch antenna for terahertz region. The electrical small antenna defines as the largest dimension of the antenna is no more than the onetenth of a wavelength 5. Design and analysis of meander microstrip antenna at.
The antenna design is comprised of an inverse sshape meander line connected with a slotted rectangular box. Meander lines mls in two configurations are presented to reduce the mutual coupling mc between two microstrip patch antenna elements. Their low profile design, often square or rectangular, allows them to be mounted to flat surfaces. Mutual coupling reduction between patch antennas using. Implementation of slotted meanderline resonators for. In this application, there is a need for directive transponders to select properly the target tag, which in turn must be ideally isotropic. Photograph of the meander line antenna with the coupled patch. 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. A seriesfed microstrip patch array with interconnecting. The most common type of microstrip antenna is the patch antenna. The resonant frequencies, bandwidth, and gain characteristics of a microstrip patch antenna were compared when single and dual mlss were loaded in various locations in the patch 35. Some of the recent literature proposing the meanderedlinefed which is a type of microstriplinefed 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.
Paper titled meanderline slotloaded highsensitivity microstrip patch sensor antenna for permittivity measurement is a good paper for readers and new researchers. Deschamps in 1953, but didnt become practical until the 1970s when it was developed further by researchers such as robert e. Antennas using patches as constitutive elements in an array are also possible. Microstrip patch antennas or simply patch antenna are increasingly useful because the antenna is printed directly onto a circuit board. However, the uhf tag antenna has a narrow bandwidth performance that involves a ground plane which increases the design complexity.
The antenna consists of a meander line which acts as a capacitively loaded patch with complementary split ring resonators csrrs cell etched on the ground plane. 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. Research article mutual coupling reduction between patch antennas using meander line qian li,1 chong ding,1 ruichao yang,1 mingtao tan,2 gangxiong wu,1 xia lei,1 xuebing jiang,1 shuanzhu fang,1 minzhi huang,1 yubin gong,1 and yanyu wei1 1school of electronic science and engineering, university of electronic science and technology of china, chengdu 610054, china. The idea is to fold the antenna element back and forth to make the overall antenna shorter. Due to reduction in meander lines, antenna resonates at higher frequencies. Microstrip antenna design handbook garg, bhartia, bahl, ittipiboon 2. The antenna is center fed and it is symmetric about its origin. A highsensitivity microstrip patch sensor antenna mpsa loaded with a meanderline slot mls is proposed for the measurement of relative permittivity. A meander line loaded antenna mla that utilizes more two or more layers of meander lines to greatly extend the operating frequency range. The proposed mpsa was designed by etching the mls along the radiating edge of the patch antenna, and it enhanced the relative permittivity sensitivity with an additional effect of miniaturization in the patch size by increasing the slot length.
Meanderline antenna is a truly transformation of monopole antenna. Click here to go to our page on circular patch antennas new for september 2018. This inductance is important because electrically small antennas can have a signi. The tapered meander slot antenna was derived from 3 in which a meander line was tapered to achieve operation at lower frequencies. The reduction in length to every stairstep of meander line is 1. Mutual coupling reduction between closely placed microstrip. A novel multiband planar invertedf antenna with meander line and slots applied on the radiating patch has been introduced. Microstrip meander slot antenna is mostly utilized. Meandering the patch increases the patch over which the surface current flows. The antenna is loaded with traditional coplanar waveguide inductor and capacitor elements. A microstrip meander line reconfigurable antenna for. The proposed structure consist of rectangular meander line on radiating. The radiation pattern of the meander line antenna was shown in fig.
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