DGS & DMS based hexagonal fractal antenna for UWB applications
02 Apr 2015-pp 0176-0179
TL;DR: DGS and DMS structures are introduced to obtain multiband characteristics in UWB frequency range and the simulated results show stable radiation patterns and good return loss in the frequency range of 2.7-9.2 GHz.
Abstract: In this paper a hexagonal shaped fractal monopole antenna is thoroughly investigated for UWB applications. The antenna is mounted on FR4 dielectric substrate and is fed by a 50 ohm microstrip feed line. Basically DGS and DMS structures are introduced to obtain multiband characteristics in UWB frequency range. The simulated results show stable radiation patterns and good return loss of less than −10 dB in the frequency range of 2.7–9.2 GHz. Each and every modification in the basic structure is supplemented with sufficient simulations and explanation to consolidate the results.
Citations
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TL;DR: The design and performance of an inset feed modified hexagonal patch antenna for possible applications in ultrawideband communication systems is reported and shows good matching with the feed network.
Abstract: The design and performance of an inset feed modified hexagonal patch antenna for possible applications in ultrawideband communication systems is reported. The inset feed hexagonal patch antenna is modified by introducing a fractal up to the second iteration. A right-angled isosceles triangular microstrip antenna is used in the Koch fractal structure on the edges. The proposed antenna is a combination of two standard fractal structures, i.e. Sierpinski and Koch. A rectangular defect in the ground has also been done. The antenna is simulated by applying CST Microwave Studio simulation software. The results are verified by fabricating the antenna and tested using a vector network analyzer. The developed design shows good matching with the feed network at frequencies of 3.1 GHz, 6.9 GHz, 7.3 GHz, 8.5 GHz, and 9.1 GHz. The simulated peak gain of the antenna at resonant frequencies is 4.08 dB, 4.79 dB, 3.85 dB, 3.46 dB, and 3.01 dB. The antenna is fabricated on FR-4 substrate having size 30 $\times $ 35 $\times $ 1.59 mm$^{3}$. It covers the S and X band range. It can be used for microwave applications as it is a part of the microwave spectrum, for wireless networking devices coming under IEEE standards. It can also be used for multimedia applications like mobile TV and satellite radio that use the S band as their frequency range and in home-based consumer electronics like microwave ovens, cordless phones, and wireless headphones. For higher ranges, i.e. in the X band, it can be used in radars, satellites, and military appliances.
13 citations
TL;DR: In this paper, a hexagonal fractal patch antenna with Koch snowflake fractal at its edges has been proposed for ultra wideband (UWB) applications and measured results show that the measured radiation patterns of this antenna are nearly omnidirectional in H-plane and bidirectional on E-plane.
Abstract: Abstract This paper presents the design, fabrication, and measurement of a novel ultra-wideband (UWB) hexagonal fractal patch antenna. This antenna uses hexagonal shape with Koch snowflake fractal at its edges. The proposed antenna has been excited using microstrip feed. The measured result of this antenna offers the ultra wideband characteristics from 3.265 GHz to 8.2 GHz. The antenna is practically fabricated and tested. Measured results show a good agreement with simulated results. The measured radiation patterns of this antenna are nearly omnidirectional in H-plane and bidirectional in E-plane. This antenna holds applications in many satellite communication transmissions, some Wi-Fi devices, cordless telephones, and weather radar systems. In this paper, an approach for multi-band antennas is proposed. First, a hexagonal patch is taken, it is fractured using Koch structure. The antenna shows compact dimensions with good S11 and pattern performance to be adopted for UWB applications.
5 citations
23 Mar 2016
TL;DR: In this article, the authors describe a multiband antenna which radiates in four frequency bands which can be used for the applications which works in WLAN and WIMAX frequencies.
Abstract: This paper describes a Multiband Antenna which radiates in four frequency bands which can be used for the applications which works in WLAN and WIMAX frequencies. The first three WLAN and WIMAX frequency bands can be achieved by using a rectangular slot and and SRR. Further by adding one triangular slot in the main patch provides one more frequency band to the microstrip Antenna. The antenna is very compact in size with the dimension of 26.5×24.5 mm.
4 citations
23 Mar 2016
TL;DR: In this article, a modified fractal antenna for bandwidth enhancement is proposed, which has stair-slots on the ground plane and cross square fractal element as radiating element.
Abstract: A modified fractal antenna for bandwidth enhancement is proposed in this paper. The proposed antenna has stair-slots on the ground plane and cross square fractal element as radiating element. The overall size of the proposed antenna measures 31.35 mm × 18.7 mm × 1.6 mm. The proposed fractal UWB antenna is simulated using CST Microwave Studio. The antenna has broad impedance bandwidth of 8.1 GHz from 2.6 GHz to 10.7 GHz at 8 dB reference level of return loss. The antenna is designed on a low cost FR-4 substrate. The proposed antenna is fabricated and the results are validated using measurements. The proposed antenna may be a useful tool for UWB communication systems.
1 citations
References
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31 Oct 2000
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3,612 citations
Journal Article•
TL;DR: A brief history of microwave engineering is given in this paper, where the impact of computer-aided design and monolithic microwave integrated circuits on microwave design is examined, along with suggestions for related studies that would be useful to the microwave engineer.
Abstract: A brief history of microwave engineering is given. The impact of computer-aided design and monolithic microwave integrated circuits on microwave design is examined. The career potential of microwave engineering is discussed, along with suggestions for related studies that would be useful to the microwave engineer. >
3,169 citations
"DGS & DMS based hexagonal fractal a..." refers background in this paper
...Fractals have unique geometrical features that occur in nature [3]....
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Proceedings Article•
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TL;DR: The energy o f the observed signal may contain frequencies a l l t h e way from 1 h e r t z t o above 100 Mhz and the presence o f such atmospheric energy needs to be understood.
Abstract: I n t h e c o n t e x t o f t h i s "handbook" o f f e r i n g , a tmospher ics re fer to e lect romagnet ic s ignals that rad iate or are produced by l ightn ing and r e l a t e d e lec t r i ca l d ischarge phenomena. Sometimes these sign a l s a r e c a l l e d s f e r i c s and the i r ex i s tence was known s ince the ea r l y days o f r a d i o . The energy o f the observed signal may contain frequencies a l l t h e way from 1 h e r t z t o above 100 Mhz. Needless t o say, the presence o f such atmospheric energy i n .ou r env i ronment needs t o be understood. I n s p i t e o f observat ional research spanning hal f a century, we r e a l l y do n o t have a c l e a r p i c t u r e o f what i s going on n o t t o mention our lack o f t h e o r e t i c a l i n s i g h t . More recent ly , inves t iga tors have examined t h e s u b j e c t i n the contex t o f the e lec t romagnet ic s igna ls tha t can be produced ind i rect ly f rom the prompt gama radiat ion associated wi th nuc lear detonat ions.
660 citations
"DGS & DMS based hexagonal fractal a..." refers background in this paper
...Although most fractal antennas are narrowband like Sierpinski-gasket [4], Minkowski [5], Koch Curve [6] etc. some wideband fractal antennas are also getting due recognition in recent times....
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