Mobile mark designs and supplies a wide range of small, low profile patch antennas for the wireless lan industries and other wireless network applications. Apr 30, 2018 meander line antenna, meander line antenna theory, meander line antenna wiki, meander line antenna design equations, meander line antenna meander line antenna basics. Microstrip patch antenna is used in mobile handset due to simple look, lower cost, small size and light in weight. Radiation occurs mostly due to the fringing field between the patch and ground. Although the line techniques can successfully rewx duce the transverse size of the antenna, the longitudinal size is still large. The most common type of microstrip antenna is the patch antenna. It consists of a monopole antenna running parallel to a ground plane and grounded at one end. The proposed antenna consists of a toothbrushshaped patch, a meander line connected with a partial ground plane and a 50. The antenna characteristics before and after applying a meander line slot are numerically investigated. Additional benefits of patch antennas is that they are easily fabricated making them cost effective. 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. Although, there is a fact that the size reduction levels remain unsatisfactory to the expectation, a microstrippatch antenna is one of the antennas which may. The operation of classic meander line is changed by two p i n diodes which helps antenna to resonate at different frequencies.
A miniaturized dualband antenna with toothbrushshaped. A more compact design of a meander line antenna was designed to operate at 2. Meander lines mls in two configurations are presented to reduce the mutual coupling mc between two microstrip patch antenna elements. Design and analysis of a folded meander dipole antenna. 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. Pdf a microstrip meander line reconfigurable antenna for. Low cost meander line chip monopole antenna semantic scholar.
Design and analysis of a folded meander dipole antenna using the mininec program pedro a. Low bandwidth of the classic meander line antennas is a problem 3, as the classic meander line antenna is one of the mi. Meandering the patch increases the patch over which the surface current flows. A microstrip patch antenna is a radiating patch on one side of a dielectric substrate, which has a ground plane on the underside 1, pg2. In this study, a miniaturized printed monopole antenna based on slotted meander line patch at 878mhz is proposed for uhf band. This antenna design uses transmission line model where a meander line antenna of length l and width w can be viewed as a wide transmission line that is resonating with electric field. Pdf a modified meander line microstrip patch antenna.
Following equations or formula are used for this microstrip patch antenna calculator. The thickness of the ground plane or of the microstrip is not critically important. Size reduction and bandwidth enhancement of aperture. In this paper a meander line monopole patch antenna with microstrip line feed has been designed for wireless lte application in the frequency band covering lte 7, 15, 16 fdd bands and lte 40 tdd band. This article presents the design of a novel planar antenna structure comprising two pairs of interconnected meandered line loops that are grounded to a truncated t. Previous studies have addressed the design classic meander line 2. A fractal antenna is an antenna that uses a fractal, selfsimilar design to maximize the effective length, or increase the perimeter on inside sections or the outer structure, of material that can receive or transmit electromagnetic radiation within a given total surface area or volume such fractal antennas are also referred to as multilevel and space filling curves, but the key aspect.
The loop the simplest type of antenna, the loop, is just a closed loop of pcboard copper connected to the transmitters or. The dualband characteristic is realized by using the toothbrushshaped patch and the meander line connected to the partial ground plane. Compared to the reference antenna design, using a meander line slot loaded to the antenna patch, it can achieves several performance. Section i provides the overview of microstrip meander line reconfigurable.
Their low profile design, often square or rectangular, allows them to be mounted to flat surfaces. The patch antenna, microstrip transmission line and ground plane are made of high conductivity metal typically copper. The meander line antenna was proposed by rasheed and tai for reducing the resonant length4. The antenna is fed from an intermediate point a distance from the grounded end. A miniaturized 878mhz slotted meander line monopole. A microstrip meander line reconfigurable antenna for. In our case, for the purpose of reducing the size of transponder, a meander line antenna mla is an attractive choice. The original inspiration came from hf meander antennas physically short antenna for impractically long wavelength for a normal dipole or vertical, but bt and wifi antennas inspired me to try to build something flat, maybe on a piece of pcb, but for much lower frequencies 2m or 70 cm and make it usable in restricted conditions, e.
Tiny microstrip antenna covers wlan, lte, and wimax. The evolution of the miniaturization techniques using slots and meander line is demonstrated in section 2. Jun 30, 2016 the proposed antenna consists of a toothbrushshaped patch, a meander line connected with a partial ground plane and a 50. Design, fabrication, and characterization of a dual. The resulting antenna is compact occupying an area of 38. The most popular are the loop, patch, invertedf, and meander line.
Compact metamaterial inspired conformal dualband antenna. What is meander line antenna meander line patch antenna. 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. Microstrip patch antenna calculator patch antenna formula. Patch antenna the mobile mark button patch antennas are available in models for 802. In our case, for the purpose of reducing the size of transponder, a meanderline antenna mla is an attractive choice. Microstrip patch antennas for broadband indoor wireless. Growing use of radiowireless technology creates greater demand for small, efficient, and lowcost antennas in a range of telecommunications and wireless local area network wlan applications, as well as worldwide interoperability for microwave access wimax, satellite communications satcom, and spacecraft. Ads software is used to compute the bandwidth, gain, directivity, and s11 of the antenna. This can bea straight trace inverted f, type trace, meandered trace, circular trace, or a curve withwiggles depending on the antenna type and space constraints. An invertedf antenna is a type of antenna used in wireless communication.
A new planar broadband antenna based on meandered line. 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. Antennas using patches as constitutive elements in an array are also possible. Although, there is a fact that the size reduction levels remain unsatisfactory to the expectation, a microstrip patch antenna is one of the antennas which may. The patch is generally made up of a conducting material such as copper or gold and can take any possible shape like rectangular, circular, triangular, elliptical or some other common shape. Design of meanderline antennas for radio frequency. The patch is of length l, width w, and sitting on top of a substrate some dielectric circuit board of thickness h with permittivity. Mutual coupling reduction between patch antennas using. Design and analysis of meander microstrip antenna at. Deschamps in 1953, but didnt become practical until the 1970s when it was developed further by researchers such as robert e.
Dual band meander line antenna for wireless lan communication. A method for miniaturizing a chip antenna is presented in this communication. 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. A capacitive load cload and parasitic patch with the shaped ground are applied to. The antenna design is comprised of an inverse sshape meander line connected with a slotted rectangular box. The meander line patch consists of 3 mm thick meandered strip, covering the area of previous triangular patch and this is now connected to the ground plate with the help of.
As fvm mentioned, you start with a lambda4 monopole connected to a large ground, then meander that monopole. A small square defected ground structure is introduced to improve the impedance matching of the antenna. The electrical length and operating mode of the antenna. This inductance is important because electrically small antennas can have a signi.
Design meander line antenna basic calculation for 2. Photograph of the meander line antenna with the coupled patch. In this application, there is a need for directive transponders to select properly the target tag, which in turn must be ideally isotropic. Also, two upper and lower loading patches are used to improve the performance of the chip antenna.
Hi all, i will like to know the basics of designing a meander line antenna. Antenna geometry the meander line antenna, as shown in figure 1 has been designed for triplebad frequencies at 0. The proposed conformal antenna is placed on a 15 mm radius cylinder whose equivalent planar dimension is 0. What is meander line antenna meander line patch antenna antenna basic antenna theory duration. Miniaturization was achieved through a combination of shorting, subsequently folding, and by replacing the standard slot loading. In the first configuration, one ml is inserted in the slot of the ground and a. Miniaturization was achieved through a combination of shorting, subsequently folding, and by replacing the standard slot loading with a slot that is featured by a meander line. The basic structure of the microstrip line feeding can be shown in figure 2. The em waves fringe off the top patch into the substrate, reflecting off the ground plane and radiates out into the air. It is not easy to obtain a good impedance by selecting the position of the shorting. This paper presents optimization problem formulations to design meander line antennas for passive uhf radio frequency identification tags based on given specifications of input impedance, frequency range, and geometric constraints. The design has two advantages over a simple monopole.
Experimental results and validation todetermine if thedesign in fig. Design of meander slotted patch antenna for wireless. Analysis of microstrip patch antenna the proposed rectangular microstrip patch antenna can be analysed and simulated by using hfss antenna simulation software. Meander line slot is loaded to the antenna patch to reduce the dimension of the proposed antenna design. This work is brought to you for free and open access by the university graduate school at fiu digital commons. A patch antenna is a type of radio antenna with a low profile, which can be mounted on a flat surface. The former one is more dominated because the meander line is coupled via non radiating edge of the patch antenna. In this paper, a classic meander line is investigated for a single band operation with wider bandwidth. 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. Design and comparative study of meander antenna and. The strip line can be united with the patch of the antenna. They are the original type of microstrip antenna described by howell in 1972. What is meander line antenna meander line patch antenna antenna basicantenna theory duration.
Asymmetrical coplanar waveguide feed is implemented. Design of microstrip patch antenna for wifi applications. It consists of a flat rectangular sheet or patch of metal, mounted over a larger sheet of metal called a ground plane. Click here to go to our page on circular patch antennas new for september 2018. However, there still is a need for a meanderline antenna that can provide wider frequency bandwidth for 5. Meander line structure has been introduced in the triangular radiating patch. It uses a folded meander line and therefore the length is half. 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. 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.
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