In case of meander line if meander spacing is increase resonant frequency decreases. The basics of meander line antenna, is to fold the conductors back and forth to make the overall length of antenna shorter than the original length of. Antenna modelling the geometry of a meander line monopole antenna attached to a metallic plate is shown in fig. Meandering the patch increases the patch over which the surface current flows. Zainuddin et al 12 proposed a microstrip meander slot antenna with a various number of meander. This paper presents the design and mathematical analysis of a fully efficient meander line edged microstrip patch antenna with square slotted electromagnetic. Design of a miniaturized meandered line antenna for uhf. An inductor model for analyzing the performance of printed. Meander line antennas have been widely studied in order to reduce the size of the radiating elements in wire antennas. Using multiparameter optimization, various meander line antennas were. Previous studies have addressed the design classic meander line 2.
The electrical length and operating mode of the antenna may. A meander line uhf rfid reader antenna for nearfield. New multiband printed meander antenna for wireless applications. An optimized circuit in plastic meander line antenna for 2.
Bandwidth enhancement for low frequency meander line antenna. Meandering also provides inductive effect to the antenna which will be useful for rfid applications. A meander line loaded antenna is provided with a ferrite donut surrounding a portion of the meander line so as to effectively lower the operating range of the meander line loaded antenna by as much as 30%. In meander line antenna the wire is continuously folded intended to reduce the resonant length. Pdf the effect of conductor line to meander line antenna. Then it was compared with conventional singlemeander line antenna. The lumped circuit element model of the antenna is shown in fig. Multiband dualmeander line antenna for bodycentric.
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. This paper describe the design,simulation and development of meander line microstrip antenna at wireless band, the antenna was. Meander line fw a top view antenna element feed plate fw plane diel at e zc fl th2 th1 b dismantled structure 22. Antenna design based on meander line technique to be.
Research article an optimized circuit in plastic meander. An equivalent circuit model for meanderline monopole. Meander line antenna is a type of printed antenna that can achieve miniaturization in size by embedding a wire structure onto a dielectric substrate. Consequently, this paper presents a novel negative meander line based microstrip antenna system being composed of inductors l and capacitors c. A meander line antenna formed in the shape of meander is disclosed. Combination of horizontal and vertical lines forms turns.
An inductor model of meander line antenna a monopole or dipole antenna can be implemented by meander line antenna integrated on flexible printed circuit substrate. The meander line antenna mla is a commonly used layout to obtain a large variety of rfid tags 8. Assessment of meanderline antenna covered with dielectric. Design and comparative study of meander antenna and. Meander line antenna is a type of the microstrip antennas. Design, fabrication, and characterization of a dual. Meander line antenna figure 1 shows a meander line antenna with total area given by a wl. Meander line antenna design using an adaptive genetic algorithm. Hf meanderline antenna simulations for nvis on a hmmw. The study of different impedance meander line for planar. The single element meander line antenna is designed which operates at 2. Antenna design to assure the tripleband operation the antenna is formed of meander line, two rectangular shapes and stub. Analysis and design of meander line dipole antennas. If that is not possible, experiment to determine an acceptable tradeoff between antenna performance and product size.
Meander line antenna mla is the most usage of antenna that use in lte. Gainoptimized selfresonant meander line antennas for rfid. Warnagiris and minardo 14 improved the antenna performance by switching the phase of a meander line. One such design for highest radiation eciency was optimized for microwave frequencies by including an impedance matching. Volume 8, issue 3, september 2018 a tripleband meander line. Meander line antenna mla is an electrically small antenna which poses several performance related issues such as narrow bandwidth, high vswr, low gain. Abstracta method to design planar multilayer meanderline polarizers is. The antenna is put on the metallic plate with a dielectric spacer. Low bandwidth of the classic meander line antennas is a problem 3, as the classic meander line antenna is one of the mi.
In figure 2, the impedance matching area is marked with a dashed line. 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. Hf meanderline antenna simulations for nvis on a hmmw 09222016. Progress in electromagnetics research,pier 24, 185199, 1999 fdtd characterization of meander line antennas for rf and wireless communications c. How to design meander line antenna forum for electronics. There are several antennas reported in the literature to achieve a uniform magnetic field distribution in nearfield reader antenna, such as meander line antennas 11, 12, transmission line. Us6630909b2 meander line loaded antenna and method for. A corrugate meander line is used to enhance the gain reduction caused by the fine meander line. Passive rfid strainsensor based on meanderline antennas. When the size of antenna is reduced, the radiation resistance is reduced. Design and analysis of meander microstrip antenna at wireless.
Helical meander line antenna and its spatial power. Pdf instructions for use title meander line antenna design. Figure 1a shows the configuration of a meander line antenna of size lw 1. Due to the helical structure of the meander line, the currents on the adjacent lines of the same side of the substrate always flow in the same direction. The input impedance z of an mla is defined by ohms law. Index terms antenna efficiency, meander line, radio fre quency identification rfid antennas, sustainability, taper, wire antennas. But in figures 4b and 4d, the second meander line is reversed and placed on the. Invertedf and meander line antennas 9 conclusion metal objects should be kept at least 15. Mobilephone, meander line antenna is convincing solution 3. A shorting pin is employed to connect the parallel stub to the ground plane. 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.
Pdf wireless communications performance depends on the efficiency of the antenna design in any wireless device. It is shown that spatial power combining antenna can be done by combining several linearly polarized meander line antennas. In the ultrahigh frequency uhf band, especially below 1 ghz, meander line antennas mla are an attractive choice for the purpose of reducing the tag sizes. In meander line antenna the wire is continuously folded intended to. The integrated antenna combines two turns of dualmeander lines dml on two stacked layers and a metal ground layer. The geometry of the proposed tag antenna is presented in figure 1 a. The antenna consists of two linearly tapered orthogonal dipoles. A dc voltage is applied between the ground plane and the base element. Efficiency in bandwidth by using meander line antennas simulation.
The evolution of the miniaturization techniques using slots and meander line is demonstrated in section 2. Pdf a miniature rfid antenna at uhf band using meanderline. Meander line antenna design using an adaptive genetic. An equivalent circuit model for meanderline monopole antenna. The whole size of the meander line itself is 49 mm. The performance of each antenna is evaluated based on return loss, operational bandwidth, and radiation pattern characteristics. Ads software is used to compute the bandwidth, gain, directivity, and s11 of the antenna. Portable helical 169 mhz ism antenna, panorama antennas, datasheetscataloguesm2m. A typical polarizer can be made of several stacked printed meander line sheets the \grating layer separated by dielectric spacers. Us6999037b2 meanderlineless wide bandwidth lshaped slot. Pdf lte is a standard for wireless data communications technology and an evolution of the gsmumts standards.
Meander line antennas are an interesting class of resonant antennas and they have been widely studied in order to reduce the size of the radiating elements in wire antennas. Various methods, such as loop antenna 5 8, meander line antenna 9 and travelling wave antenna twa 10, 11, are employed for designing the nearfield reader antenna. Bandwidth enhancement for low frequency meander line. Analysis of covered meander line antenna the structure of the meander line antenna is shown in fig. Since an additional meander line layer is used in this stacked. This application note is dedicated to the stm32wb series microcontrollers. Meander line technology allows designing antennas with a small size and provides wideband performance 1. Well designed and implemented pcbprinted antennas have a similar performance to the smd surfacemounted device ceramic equivalence. Researchers seek to design electrically small planar antennas for rfid applications. The 2lcfma2 has regions where the meander lines of the two layers are not overlapped as shown in figure 4d. A layer of pn semiconductor material is inserted between a ground plane and a base element. Invertedf and meander line antennas application note. Return loss result for the triple meander slot antenna 11 n.
The mda is actually a dipole loaded with meander lines. However, there still is a need for a meander line antenna that can provide wider frequency bandwidth for 5. The goal of this report is to design a square meander line antenna using a. The meander line antenna includes a bottom half section that is constituted by a folded conductive pattern of a folded dipole antenna, and includes a feeding point for mounting an ic chip at the central part.
The meander line configuration of the monopole allows reducing the occupied space of the antenna element to less than 0. In order to reduce the antenna length and width, a straight conductor will be folded back and forth to make the meander line antenna structure. Microstrip meander slot antenna is mostly utilized in modern wireless communication devices mainly because of their small size. The prototype antenna 2 is built using epoxy glass fiber fr4, r 4. We will use the empirical equations to come up with a meander line antenna mla that has a resonant frequency of 2. Design of meander line antenna for operating frequency of 2. The pitch of each turn of the meander line is 1 mm, and the length of the last part of the meander line is 17 mm. Us6856288b2 ferrite loaded meander line loaded antenna. Simulation comparisons of three different meander line. Design of a small radio frequency identification tag antenna. Meander line antenna w ith a very high relative permittivity substrate fo r 315mhz band a pplications international symposium on antennas, propa gation and em theory, pp.
A more compact design of a meander line antenna was designed to operate at 2. In mobile communications, meander line antennas are recently favoured over other printed antennas due to its simplicity and ease in integration. Pdf a novel negative meander line design of microstrip. Electronics free fulltext multiband dualmeander line antenna. The design of meander line antenna with coplanar waveguide is shown in fig. Design and analysis of meander microstrip antenna at. Adding a second meander reduces the fre to verify the simulations results, the two types of antennas were quency of the. Microsoft word hf meander line antenna simulations for nvis on a hmmw 09222016. Capacitive stripeloaded meander line antenna it is indicated from fig. In this study, a miniaturized printed monopole antenna based on slotted meander line patch at 878mhz is proposed for uhf band. Both the traditional and proposed antennas are fabricated and shown in fig. But these antennas have some disadvantages, low radiation efficiency. The antenna substrate is made on rogers ultaralam 1250 tm with dimensions 72. The design of meander line antenna is a set of the horizontal and vertical lines.
The principle of operation of this meander line ml polarizer is well known 9 and results from. A small square defected ground structure is introduced to improve the impedance matching of the antenna. Pdf ijiraedesign and analysis of meander microstrip. There are various techniques to miniaturize the size of micro strip antennas viz. Pdf design and simulation of meander line antenna for lte.
Meander line antenna has been proposed over the long vertical microstrip feeding line at 0. Pdf meander lineloaded planar monopole antennas amr. These two mlas are modeled and simulated in ansys hfss software package, and their primary structural parameters are listed in table 1 with. By using the patch antenna the return loss, gain, directivity increases in the resonant frequency of 12ghz operates at the x band and useful for satellite communication than meander antenna. Design of meander slotted patch antenna for wireless. Return loss result for the dual meander slot antenna 11 fig.
One example of an mda loaded with six meander lines is shown in figure 1. The proposed antenna which operate at resonant frequencies 1. Helical meander line antenna and its spatial power combining. The meander line antennas are used in various applications. The meander line antennas mla are electrically small antennas that pose several performance related issues such as narrow bandwidth, low gain and high cross polarization levels. The impedance of the base element is thus changed, resulting in a. A meander line is printed like a helix on both sides of substrate. A miniaturized 878mhz slotted meander line monopole antenna. 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 higher radiation efficiency. A change in capacitance between the ground plane and the base element is effected. Pdf lumped circuit model analysis of meander line antennas. The meander line antenna was proposed by rasheed and tai for reducing the resonant length4. Ll lumped inductance l a 2 lumped capacitance c b cl where l is the inductance per unit length c is capacitance per unit length and l is length of the line segment 10 total length of antenna is given as n s 10 n number of turns, s spacing between two meander lines. Meander line antennas mla are an interesting class of resonant antennas and they have been widely studied in order to reduce the size of the radiating elements in wire antennas.
Design of meander line antenna for operating frequency of. An example of symmetric mla with2nfoldingsandatuningtmatchsectionisshowninfig. Pdf design and simulation of meander line antenna for. Meander line antenna meander line is a type of printed antenna that can achieve miniaturization in size by embedding a wire structure onto a dielectric substrate. Meander line antenna is a type of printed antenna that achieves miniaturization in size by embedding the wire structure on a dielectric substrate. Antenna design based on meander line technique to be applied. Ll lumped inductance l a 2 lumped capacitance c b cl where l is the inductance per unit length c is capacitance per unit. Meander line antenna is a type of printed antenna that can achieves miniaturization in size by embedding a wire structure onto a dielectric substrate. Geometry of meander line antenna manuscript received january 8, 20. Design of a small radio frequency identification tag.
The authors in 6 proposed a meander line structure for pcmcia cards at 2. One of the main reasons to use a pcb printed circuit board antenna is the reduced overall cost of the radio module. In this research enhancement techniques were applied to enhance the gain and the bandwidth of one mla antenna. Tapered meander line antenna for maximum efficiency and. Meander like pcb antenna can be tuned to the required 50.
Under nominal conditions, this antenna exhibits and impedance very close to the required nominal impedance 50. Circularly polarized meander line cross dipole antenna for. Meander line antenna has some advantages, it is electrically small, low profile antenna and has simple structure thus gives higher bandwidth 1. The result shows that the gain increases by about 1 dbi to 1. The circularly polarized meander line cross dipole antenna is designed on a 58. At the lower frequencies the ferrite material introduces a minimal loss of 2 to 3 db, whereas at the higher frequency range very little current passes through the meander line thus. Volume 8, issue 3, september 2018 a tripleband meander.
This paper proposes an electrically two type of smallsize antenna that is based on the meander antenna structure that operates in the 2. This paper proposes an electrically two type of smallsize antenna that is based on the meander antenna structure that. A miniaturized 878mhz slotted meander line monopole. The microstrip meander conducting line with zero thickness for the numerical analysis is mounted on a dielectric substrate, which is sandwiched between a dielectric cover and grounded conductor. Huang 245 design of meander line antenna is mainly by folding a monopole or dipole antenna into a zigzag pattern. An antenna includes one or more conductive elements for acting as radiating antenna elements, and a slow wave meander line adapted to couple electrical signals between the conductive elements, wherein the meander line has an effective electrical length which affects the electrical length and operating characteristics of the antenna. It has been found that such an antenna can be configured so as to completely mimic the characteristics of the corresponding meander line loaded antenna, size by size. As proposed in 2, folding the elements in a meander produces a wire configura. The present invention offers an alternative method of tuning a meander line antenna. Mla technology was originally developed by bae systems a former lockheed martin company, for the information and electronic warfare systems iews, which require high performance antennas for both satellite and terrestrial communications. The antenna has a meander line with two rectangular shapes and stub. Folded meander line antenna for wireless mbus in the vhf and uhf bands a. Pdf instructions for use title meander line antenna. Thus, meander line loaded antenna gain can be achieved across a band between 830 mhz and 1.
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