It is shown that a fractal mimo concept with 21 transmitting antennas and 21 receiving antennas improves the angular resolution to 4. A hexagonalshaped fractal antenna array for multiband. A compact hexagonal tree shaped fractal antenna for ultra wideband uwb applications is presented. Islam2, and rezaul azim2, 1department of electrical, electronic and systems engineering, universiti kebangsaan malaysia, ukm bangi 43600, malaysia. A miniaturized hexagonaltriangular fractal antenna for.
The designed antenna covers entire uwb bandwidth of 3. A selfsimilar plus shape fractal antenna with hexagonal. This antenna has low profile, lightweight and easy to be fabricated and has successfully demonstrated wideband characteristics. Therefore, fractal antenna is an auspicious area to be inspected and developed. In this paper a hexagonal shaped monopole fractal antenna for uwb application is designed. Hexagonal patch with a combination of koch 23,24 and trapezoidal elements added on the edges 25.
The radiation characteristic of the hexagon fractal antenna is in the uwb frequency range from 3. Bhadra chaudhuri3 abstractthe present paper analyses and documents the merits of incorporating fractal. Pdf in this paper, a multiband fractal antenna having the shape of hexagonal is proposed. Ultrawideband highgain dipole antenna evolved from. Hexagonal fractal third iteration the radiating patch and the. This process is repeated recursively to result in the fractal. In17 18 a cpw feed dual band fractal antenna structure is formed by inscribin g a hexagonal slot within a circle. This ngon is replaced by a flake of smaller ngons, such that the scaled polygons are placed at the vertices, and sometimes in the center. The inset feed hexagonal patch antenna is modified by introducing a fractal up to the second iteration. In this paper, a compact octagonal uwb fractal antenna coufa is designed. High gain compact hexagonal fractal antenna iosr journal. In this work, a compact hexagonal boundary fractal antenna for ultra wide band uwb applications with wlan bandnotch characteristics is proposed.
Design of pentagonal fractal antenna for uwb applications ethesis. The fractal geometry used here is sierpinski carpets method. Abstracta hexagonal fractal antenna is presented for satellite navigation applications in this paper. A novel cpw fed hexagonal boundary carpet fractal antenna with band notch characteristics has been proposed in this paper. Three iterations of the hexagonal fractal multiband antenna arranged are examined. Pdf design of hexagonal fractal multiband antenna with. A pentaband reject inside cut koch fractal hexagonal monopole uwb mimo antenna for portable devices gnanaharan irene and anbazhagan rajesh abstractin this paper, a novel compact hexagonal shaped ultrawideband multipleinput multipleoutput uwbmimo koch fractal antenna is designed with pentaband rejection characteristics for portable.
A compact hexagonal sierpinski fractal antenna for super wideband applications is presented. Pdf this paper describes the concept of a new fractal multiband antenna based on the hexagon shape. A fractal antenna is an antenna that uses a fractal, self similar c d design to maximize the length, or increase the perimeter of material that can receive or transmit electromagnetic radiation figure. Different parameters have been observed at different frequency bands of operation. Partial ground plane is used in the proposed design, which is further modified by varying its length from 7mm to 10mm and it is fed by a microstrip transmission line whose width is also varied from 1mm to 1. Pdf a hexagonal multiband fractal antenna using for.
This paper describes the concept of a new fractal multiband antenna based on the hexagon shape. The proposed antenna has been excited using microstrip feed. Pdf on jan 1, 2014, sneha suresh kadam and others published high gain compact hexagonal fractal antenna find, read and cite all the research you. Pdf a hexagonal fractal antenna for multiband application. It has an ultrawide bandwidth and high gain, due to a. In the first design, a hexagonal shaped monopole fractal antenna for wideband application is designed. Design of a novel super wide band circular hexagonal fractal antenna by m. Pdf this paper presents the design, fabrication, and measurement of a novel ultrawideband uwb hexagonal fractal patch antenna.
With selfsimilarity and periodicity of fractal geometry, the dipole antenna is excellent in performances. Some other irregular structures 6, 7 are used to design the uwb antennas. Author links open overlay panel kailas kantilal sawant. In this paper a hexagonal antenna with fractal slots has been designed. The current density is low in the middle area of the hexagonal fractal antenna. Design of hexagonal fractal antenna array for multiband wireless application jyoti ananda jadhav 1, prof. India abstract in this paper, hexagonal fractal antenna is investigated for wide band applications. In this paper, a novel circular hexagonal fractal antenna is investigated for super wide band applications. Desirable radiation performance characteristics including relatively stable and omni. The hexagonal fractal antenna is design for four iterations i. A novel triband hexagonal microstrip patch antenna using modi. A hexagonal shaped fractal antenna for uwb application.
A cpwfed hexagonal antenna with fractal elements for. Pdf hexagonal boundary fractal antenna with wlan band. Hence, half wavelength dipole antenna using fractal koch curve technique was designed in order to miniaturize the antenna height with a given total surface area or volume. Ultra wideband octagonal fractal antenna using minkowski.
This hexagonal antenna is used for different wireless application. 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. This hexagonal antenna is used for different wireless. Fractal antenna, hexagonal, resonant frequency, directivity i. A novel fractal evolved dipole called modified hexagonal sierpinski grid carpet dipole, of which size is about 1. Antenna has simple and easy to fabricate structure. Ultrawideband highgain dipole antennas are urgently desired for mobile communications. This paper evaluates the performance of a plus shaped fractal antenna integrated with electromagnetic bandgap ebg structure. A hexagonal fractal antenna for navigation application encheng wang and shaojie cheng abstracta hexagonal fractal antenna is presented for satellite navigation applications in this paper.
Analysis of fractal antenna was done by using the software named cst microwave studio suite 12. In this paper, hexagonal fractal antenna is investigated for wide band applications. Design and analysis of hexagonal shaped fractal antennas. The iterations are made from hexagonal rings, where the sides of the rings are connected by triangular elements inside a hexagonal metal patch. Design and development of hexagonal shaped fractal. The standard dipole, koch curve dipole antenna with one iteration and 2 iteration was.
Pdf a novel multi band notched octagonal shaped fractal. Pdf a hexagonal shaped fractal antenna for uwb application. Hexagonal fractal multiband antenna for uwb 1820 and with dgs 21,22. The hexagonal fractal microstrip antenna has designed and discussed. Structure of the proposed uwb hexagonal monopole antenna the hexagonal monopoleantenna is designed by using eqs. A hexagonal fractal superwideband antenna operating at terahertz frequencies is presented in this paper. A novel hexagonal boundary fractal antenna with band notch. Researchers have explored many antennas of fractal nature like.
This antenna is composed of a firstorder hexagonal fractal ring radiating patch fed by a yshaped transmission line. Design and analysis of hexagon microstrip patch sierpinski. The proposed fractal like geometry is implemented on a microstrip fed planar hexagonal monopole antenna. Design of hexagonal fractal antenna array for multiband. A hexagonal fractal antenna for navigation application. This antenna uses hexagonal shape with koch snowflake fractal at its edges. Pdf hexagonal fractal antenna using koch for wireless. Microstrip hexagonal fractal antenna for military applications in.
Therefore, the current will not be affected if the middle area metallization of hexagonal fractal antenna is removed by hexagon. Dielectric loading on multiband behaviors of pentagonal. Pdf design and analysis of hexagonal shaped fractal antennas. A novel multi band notched octagonal shaped fractal uwb antenna. Cpwfed hexagonal sierpinski super wideband fractal. Defense and aerospace communication systems need compact wideband antennas suitable for multiplefrequencyband operation.
Fractal antenna arrays for mimo radar applications. In this antenna maximum directivity is about the horizontal axis. The development of small sized multiband antenna has become prime interest of the industry. It consists of three iterations of a hexagonal slot loaded hexagonal radiator fed by a microstrip line, defected irregular partial ground plane along with a backed plane rectangular ring resonator. In this article, a miniaturized hexagonal triangular fractal antenna is examined for wideband applications. In this paper, hexagonal slotted electromagnetic bandgap structures are surrounding the plus shaped fractal antenna 48. Characteristics of hexagonal fractal microstrip antenna are compared with sierpinski gasket fractal antenna the hexagonal fractal antenna is observed to possess multiband behaviour similar to the sierpinski gasket antenna. Kh9 byeman codename hexagon, commonly known as big bird or keyhole9, was a series of photographic reconnaissance satellites launched by the united states between 1971 and 1986. A microstripfed hexagonally shaped aerial for uwb application is proposed in this paper. A novel triband hexagonal microstrip patch antenna using. In this report three antenna designs using fractals have been proposed. The working frequency band covers a large number of wireless communication applications.
Dual band david fractal microstrip patch antenna for gsm. In the present paper a detailed study of a new compacted hexagon microstrip patch antenna using fractal ground plane and shorting pin is presented. The geometry of the antenna is inspired by the sierpinskicarpet and has compact dimensions, improved. Of twenty launch attempts by the national reconnaissance office, all but one were successful.
Another hexagonal fractal microstrip antenna where iterations of hexagonal slot inside a hexagonal patch with multiband and broad band characteristics has been demonstrated in. Typically, there is also the restriction that the ngons must touch yet not overlap. Design of hexagonal antenna using meander fractal geometry. Ultra wide band fractal antenna based on pentagonal geometry has been proposed in this. Hexagonal fractal antenna for super wideband terahertz. A novel hexagonal shaped star slotted fractal antenna for. Formation of fractal antenna array for multiband applications ijrte.
By using hexagonal fractal antenna we can possibly achieve the. Here a coplanar wave guide cpw fed antenna with combinational slots is used. India 2bundelkhand institute of engineering and technology, jhansi, u. Fractal is a concept which is being implemented in microstrip antenna to have better characteristics than conventional microstrip antenna. Directivity is a ratio of maximum radiated to radiate by reference antenna.
The line feed and inset line feeding techniques are applied to analyze the behavior of designed antenna. The design process starts by a simple hexagon patch antenna fed by a microstrip line and simulated in the frequency range of 3. Multiband antennae can be developed by applying fractal geometry to conventional antennae. The proposed antenna is made by removing the equilateral triangles of. Miniaturized concentric hexagonal fractal rings based. The proposed fractallike geometry is implemented on a. This paper presents the design, fabrication, and measurement of a novel ultrawideband uwb hexagonal fractal patch antenna. A pentaband reject inside cut koch fractal hexagonal. The measured result of this antenna offers the ultra wideband characteristics from 3. Cpw fed hexagonal micro strip fractal antenna for uwb. Pdf high gain compact hexagonal fractal antenna researchgate.
It is observed that the proposed antenna with ebg improves the gain and. The proposed antenna is made of iterations of a hexagonal slot inside a circular. Pdf design and analysis of hexagonal shaped fractal. Design and analysis of fractal antennas for wideband. Koch fractalbased hexagonal patch antenna for circular polarization. Cpwfed hexagonal sierpinski super wideband fractal antenna. It consists of hexagonal radiation patch with two iterations of sierpinski square slots and coplanar waveguide feeding. Photographic film aboard the kh9 was sent back to earth in recoverable film return capsules for processing and. Cpw fed hexagonal micro strip fractal antenna for uwb wireless communications. The bandwidth has been enhanced by using modified feedline and semicircular ground plane. Koch fractalbased hexagonal patch antenna for circular. A design of quadband hexagonal antenna with fractal slots. The introduction of the fractal shaped radiating ring increases the total current path length as a result of which ant.
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