In this paper, a development of aperture coupled based microstrip antenna using meander line slot is presented. For instance, many antenna types have very narrow bandwidths and cannot be used for wideband operation. The upper band is given by the tapered rectangle patch that is connected to a 50 ohm microstrip feed line, while the lower band is produced by means of a meander line that is integrated with the partial ground plane. Bandwidth improvement for compact microstrip patch antenna. In order to compare the different types of antennas, the physical dimensions of the antenna can be confronted to the bandwidth achieved. The resonant frequency of the conventional meander line antenna can be achieved by. Cavity embedded meander line loaded antenna and method and apparatus for limiting vswr us20050200549a1 en 20040315. Us6373446b2 narrowband, symmetric, crossed, circularly. In the first configuration, one ml is inserted in the slot of the. As shown in the schema below, high bandwidth cannot be reached with both small surface and small volume. The main advantage of this feed technique is that it eliminates spurious feed radiation andprovides very high bandwidth due to overall increase in the thickness of the.
A simple dualband antenna using a meander line and a. Often, the desired bandwidth is one of the determining parameters used to decide upon an antenna. The naval undersea warfare center division newport nuwcdivnpt has developed and tested a microstrip patch antenna that increased the bandwidth of the prototyped gps antenna from a typical 25% to 2025%. The radiation pattern of the meander line antenna was shown in fig. It can be used to implement required distributedelement rf components such as filters, while at the same time being economical because the same mass production methods are used as for printed circuit boards. A modified meander line microstrip patch antenna with enhanced bandwidth for 2.
The related artificial magnetodielectric medium belongs to the waveguided metamaterial proposed previously. A bandwidthenhanced, compact, singlefeed, lowprofile, multilayered, circularly polarized cp patch antenna is presented. Photograph of the meander line antenna with the coupled patch. In our case, for the purpose of reducing the size of transponder, a meanderline antenna mla is an attractive choice. The properties of the antenna such as bandwidth, beamwidth, gain, directivity, return loss and polarization were obtained. The antenna is fed from an intermediate point a distance from the grounded end. Nearzero metamaterial inspired uhf antenna for nanosatellite. The gain of the antenna is efficient for meander line antenna to operate well at 2. Two pairs of triangleshaped elements are each connected at their vertices to form bowtie elements. A highsensitivity microstrip patch sensor antenna mpsa loaded with a meanderline slot mls is proposed for the measurement of relative permittivity. Bandwidth enhancement of a dual band planar monopole. A bandwidthenhanced, compact, singlefeed, lowprofile.
Meander line loaded tunable patch antenna wo2002060007a1 en 20010125. A simple dualband antenna using a meander line and a tapered. Design and analysis of a folded meander dipole antenna using the mininec program pedro a. Design and analysis of meander microstrip antenna at. 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.
The upper band is given by the tapered rectangle patch that is connected to a 50 ohm microstrip feed line, while the lower band is produced by means of a. Meander lines mls in two configurations are presented to reduce the mutual coupling mc between two microstrip patch antenna elements. Proximitycoupled feed two dielectric substrates are used such that the feed line is between the two substrates andthe radiating patch is on top of the upper substrate. Improving bandwidth rectangular patch antenna using. It consists of a monopole antenna running parallel to a ground plane and grounded at one end. 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.
The bandwidth enhancement technique which is studied is the identical dual patch microstrip antenna with airgap idma. The initial length of meander line is 9 mm and it reduced to 8 mm or 7 mm. By inserting the meander line resonator between the patch antennas with the edgetoedge distance less than 18, about 8db reduction of mutual coupling throughout the 10db bandwidth has been achieved without degrading the radiation pattern. Secondly, the microstrip antenna was designed to operate at 100 mhz, but it is resonant at approximately 96 mhz. This paper presents a simple dualband antenna for wireless local area networks wlans applications. Dual band meander line antenna for wireless lan communication. The design has two advantages over a simple monopole. In our case, for the purpose of reducing the size of transponder, a meander line antenna mla is an attractive choice. Section i provides the overview of microstrip meander line reconfigurable antenna. Low bandwidth of the classic meander line antennas is a problem 3, as the classic meander line antenna is one of the mi. The 3d view for gain of meander line antenna is also shown in fig. 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. Deschamps in 1953, but didnt become practical until the 1970s when it was developed further by researchers such as robert e. Pdf design and simulation of meander line antenna for lte.
This paper proposes an electrically two type of smallsize antenna that is based on the meander antenna structure that. Design of meander slotted patch antenna for wireless. The microstrip format is the format of choice for modern rf electronics. One standard meanderline antenna and other two nonstandard meander antennas have been. Bandwidth enhancement for low frequency meander line antenna. Meanderline slotloaded highsensitivity microstrip patch. This work is brought to you for free and open access by the university graduate school at fiu digital commons. Dgs is incorporated in the ground plane under the patch antenna to improve its. The patch is of length l, width w, and sitting on top of a substrate some dielectric circuit board of thickness h with permittivity. If the ratio lw is close to unity, the radiation pattern will be symmetric but may not provide a resonable input impedance. A microstrip meander line reconfigurable antenna for. The antenna has three doublering resonators drrs etched on the metal patch, and a partial ground plane so that the impedance matching characteristics of the antenna are much better. Compared to the reference antenna design, using a meander line slot loaded to the antenna patch, it can achieves several performance improvements.
The proposed antenna constitutes of 2 substrate layers which are separated by a common ground plane. 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. Both simulation and measurement results show that the proposed patch antenna with the eml array has wider impedance. But the biggest disadvantages is that they are narrow band antennas. Both simulation and measurement results show that the proposed patch antenna with the eml array. Pdf a modified meander line microstrip patch antenna with. A triangular patch antenna for uhf band with microstrip. Bandwidth enhancement for low frequency meander line. The directivity of a patch can be estimated quite easily. Meandering the excited patch surface current paths in the microstrip antennas radiating patch is also an effective method for achieving a lowered fundamental resonant frequency for the microstrip antenna 37.
According to the second meanderline simulation, the dimension of the antenna is 75mm 39mm 1. Bandwidth improvement for compact microstrip patch. However, there still is a need for a meander line antenna that can provide wider frequency bandwidth for 5. A cornertruncated patch is introduced as a nearfield resonant parasitic element directly beneath a specially engineered radiation patch. The operation of classic meander line is changed by two p i n diodes which helps antenna to resonate at different frequencies. Mutual coupling reduction between patch antennas using. 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. A bandwidth enhancement of more than 11% was achieved. The key to this innovation is the use of a highly anisotropic superstrate layer that can be placed over an existing patch antenna as a retrofit or incorporated into new systems. The bowtie elements are arranged orthogonally adjacent a ground plane, reducing shadowing and crosscoupling, and providing an efficient and compact meander lines antenna. Increasing the bandwidth of microstrip patch antenna by. A patch antenna radiates power in certain directions and we say that the antenna has directivity usually expressed in dbi.
Section ii describes how the concept of classic meander line is formed. In this case, the length of meander lines is changed. Previous studies have addressed the design classic meander line 2. Size reduction and bandwidth enhancement of aperture coupled. Operational bandwidth is measured as the frequency range over which the. Cavity embedded meander line loaded antenna and method and apparatus for limiting vswr us20070115199a1 en 20031231. Microstrip antenna has various applications because it have various advantages as to conventional antenna. Mutual coupling reduction between closely placed microstrip. Increasing the bandwidth of microstrip patch antenna by loading compact artificial magnetodielectrics abstract. Meander line antenna is a type of the microstrip antennas. Size reduction and bandwidth enhancement of aperture. An invertedf antenna is a type of antenna used in wireless communication. The meanderline antenna concept is to fold the conductors back and forth to reduce antenna physical size. Consider the microstrip antenna shown in figure 1, fed by a microstrip transmission line.
The design of meander line elements of the meander line antenna is shown in fig. Here, a meander line resonator is placed in between the radiating elements. A more compact design of a meander line antenna was designed to operate at 2. The microstrip antenna have various advantages like low cost, can be mounted on planar surface,light weight,support dual and triple band of frequency etc. Meandering the patch increases the patch over which the surface current flows. Design, fabrication, and characterization of a dual. A highsensitivity microstrip patch sensor antenna mpsa loaded with a meander line slot mls is proposed for the measurement of relative permittivity. Efficiency of a meander line antenna depends on the number. Design and analysis of meander microstrip antenna at wireless. We realize artificial magnetodielectric loading for microstrip patch antenna by etching embedded meander line eml array in the ground plane under the patch. Mar 05, 2017 the microstrip antenna have various advantages like low cost, can be mounted on planar surface,light weight,support dual and triple band of frequency etc. On the other hand, meandered antennas are very hard to. Circular shaped fractal pifa antenna provides high efficiency and gain 7.
Meander line loaded tunable patch antenna us6677915b1 en 20010212. 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. The antenna characteristics before and after applying a meander line slot are numerically investigated. Soh designed a planer meander line antenna to operate in a frequency of. Design and analysis of a folded meander dipole antenna using. A bandwidth enhanced, compact, singlefeed, lowprofile, multilayered, circularly polarized cp patch antenna is presented. Bandwidth enhancement of a dual band planar monopole antenna. Experimental results and validation todetermine if thedesign in fig. Slot meander patch antennas are designed for fourthgeneration longterm evolution 4g lte. 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. These improvements are not only in terms of size reduction, but also in terms of. The present invention features an improved crosselement meander line loaded antenna. Pdf design and simulation of meander line antenna for. Design of meander line antenna for operating frequency of 2.
The most common type of microstrip antenna is the patch antenna. Bandwidth enhancement technique in microstrip antenna for. 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. The meander line antenna concept is to fold the conductors back and forth to reduce antenna physical size. The 10 db impedance bandwidth of the proposed antenna is 2. A modified meander line microstrip patch antenna with enhanced.
Dec 04, 2012 introduction in its most basic form, a microstrip patch antenna consists of a radiating patch on oneside of a dielectric substrate which has a ground plane on the other side for good antenna performance, a thick dielectric substrate having a low dielectric constant isdesirable since this provides better efficiency, larger bandwidth and better. Bae systems information and electronic systems integration inc. Meander line antenna is the most usage of antenna that use in design of the applications such as rfid and wlan. Antennas using patches as constitutive elements in an array are also possible.
Hi all, i will like to know the basics of designing a meander line antenna. Click here to go to our page on circular patch antennas new for september 2018. The patch antenna, microstrip transmission line and ground plane are made of high conductivity metal typically copper. 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. If the antenna had a 100% radiation efficiency, all directivity would be converted to gain. The measured impedance bandwidth of the antenna for the returnloss less than 10 db in the 2. Meander line slot is loaded to the antenna patch to reduce the dimension of the proposed antenna design. The microstriplinefed patch antennas ensure several stunning properties. A microstrip meander line reconfigurable antenna for wireless. The percentage bandwidth of the rectangular patch microstrip antenna in terms of patch dimensions and substrates parameters is given as follows. Pdf a modified meander line microstrip patch antenna.
Pdf design and analysis of a meander line cornered microstrip. Proper design of the superstrate layer and the correct orientation of its polarization layer enable broader bandwidth capabilities for a given antenna. Their low profile design, often square or rectangular, allows them to be mounted to flat surfaces. This shift is due to fringing fields around the antenna. Vertical meandering approach for antenna size reduction. This inductance is important because electrically small antennas can have a signi. It is not easy to obtain a good impedance by selecting the position of the shorting posts. A similar approach can be applied to design a meandertype slot antenna. The basics of patch antennas, updated orban microwave. The objective of paper is to design a meander line antenna for wlan application that is 2. Microstrip patch antennas or simply patch antenna are increasingly useful because the antenna is printed directly onto a circuit board.
The microstrip line fed patch antennas ensure several stunning properties. A meander line slot is loaded to the antenna patch to reduce the dimension of the proposed antenna design. Microstrip patch sensor antenna for relative permittivity. Design and analysis of a folded meander dipole antenna. By make variations in patch dimensions the operating frequency is. Additional benefits of patch antennas is that they are easily fabricated making them cost effective.
Rectangular patch antennas are notoriously narrowband. A planar invertedf antenna pifa is used for wireless circuitry implemented in microstrip. Typical half wave patches have efficiencies well above 90%. Meander line antenna with artificial magnetic conductor. But the biggest disadvantages is that it has very narrow bandwidth and low gain. Capacitive stripeloaded meander line antenna it is indicated from fig. The meander line antenna was proposed by rasheed and tai for reducing the resonant length4. We realize artificial magnetodielectric loading for microstrip patch antenna by etching embedded meanderline eml array in the ground plane under the patch.
Meander line antenna mla is the most usage of antenna that use in lte. Design of meander line antenna for operating frequency of. Although the line techniques can successfully rewx duce the transverse size of the antenna, the longitudinal size is still large. What is meander line antenna meander line patch antenna. By changing the length of meander line the reduction in length of meander lines effect the antenna performances in terms of frequencies and reflection coefficient. Design and comparative study of meander antenna and microstrip. Shielded spiral sheet antenna structure and method. 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. Several techniques have been proposed in the literature for widening the bandwidth. In the first configuration, one ml is inserted in the slot of the ground and a. The dualband characteristics are obtained by the use of a meander line and a tapered rectangle patch. However, there still is a need for a meanderline antenna that can provide wider frequency bandwidth for 5. Design and analysis of a meander line cornered microstrip patch.
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