Compact wideband Koch fractal printed slot antenna

Krishna, Deepti Das; Gopikrishna, M.; Aanandan, C. K.; Mohanan, P.; Vasudevan, K.

doi:10.1049/iet-map.2008.0210

Cited by 74 publications

(41 citation statements)

References 9 publications

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“…The common popular fractal structures such as Triangular Koch [15], Rectangular Koch [17], Minkowski [16], Giuseppe Peano [17] and normal Sierpinski [11] up to second iteration along with the proposed modified Sierpinski are incorporated within the surface of hexagonal patches of fixed side length 24 mm as illustrated in Fig. 6.…”

Section: Investigation Of Miniaturization Performance Of the Proposedmentioning

confidence: 99%

A Novel Tri-Band Hexagonal Microstrip Patch Antenna Using Modified Sierpinski Fractal for Vehicular Communication

Mondal¹,

Samanta²,

Ghatak³

et al. 2015

PIER C

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Abstract-The present paper analyses and documents the merits of incorporating fractal design in microstrip antenna intended to be mounted on and integrated into the design of smart vehicles. A novel design is proposed for a compact tri-band hexagonal microstrip antenna to be integrated with the body of a smart vehicle for short range communication purpose in an Intelligent Transport System (ITS). This antenna can be used at 1.575 GHz of GPS L1 band for vehicle to roadside communication, at 3.71 GHz of mobile WiMAX band (IEEE 802.16e-2005) for blind spot detection and at 5.9 GHz of DSRC band (IEEE 802.11p) for vehicle to vehicle communication. At 3.71 GHz, the two major lobes of the antenna radiation beam, tilted by 35 • on both sides from its broadside direction, help the vehicle to detect blind spots efficiently. The largest dimension of the proposed antenna corresponds to the lowest resonating frequency, 1.575 GHz. Compared to the conventional hexagonal patch, the modified Sierpinski fractal proposed herein reduces the overall area, at 1.575 GHz, by 75%, with 5.2 dBi gain. In comparison with other popular fractals, the proposed fractal structure achieves demonstrably better antenna miniaturization. When the antenna is mounted on the vehicle, considered an electromagnetically larger object, the simulated and on-vehicle experimental results show antenna gains of more than 5.5 dBi at 1.575 GHz, 8 dBi at 3.71 GHz and 9 dBi at 5.9 GHz in the desired direction with negligible amount of electromagnetic interference inside the car.

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Section: Investigation Of Miniaturization Performance Of the Proposedmentioning

confidence: 99%

A Novel Tri-Band Hexagonal Microstrip Patch Antenna Using Modified Sierpinski Fractal for Vehicular Communication

Mondal¹,

Samanta²,

Ghatak³

et al. 2015

PIER C

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“…An annular ring microstrip antenna (ARMA) with a periodically added sector stubs at the outer and inner edge has been reported (Hong et al, 2006) to have a relatively wider bandwidth and smaller size than ordinary ARMAs. Fractal geometry applied to the periphery of microstrip antennas has also led to the reduction of the antenna size and broadening of the bandwidth , Krishna et al 2009). Therefore, it is expected that by applying sine wave pattern to the periphery of the EARMA, broader bandwidth and reduced antenna size will be obtained.…”

Section: Elliptical Annular Ring Microstrip Antennas Having a Sine Wamentioning

confidence: 99%

Circularly Polarized Microstrip Antennas with Proximity Coupled Feed for Circularly Polarized Synthetic Aperture Radar

Baharuddin¹,

Sumantyo²

2011

Microstrip Antennas

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“…There are various impedance matching and feeding techniques used to achieve wide bandwidth [3][4][5]. Using some narrow slots or removing some portion from the resonators such as patch loaded with U-slot [6,7], W-slot [8], V-slot [9], T-slot [10] and fractal shaped patch [11,12] provides a compact antenna with enhanced bandwidth. An asymmetric E-shaped patch and proximity coupled patch antenna [13,14] also provide improved bandwidth, but the overall size is compromised.…”

Section: Introductionmentioning

confidence: 99%

Butter Fly Shape Compact Microstrip Antenna for Wideband Applications

Tiwari¹,

Singh²,

Kanaujia³

2017

PIER Letters

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Abstract-In this article, a novel design of butterfly-shaped compact and small size microstrip antenna is proposed. The radiating structure consists of four circular discs in coalesced form and fed with coaxial probe. The initial antenna resonates at 9.64 GHz with impedance bandwidth of 11.41%. The resonance frequency is further reduced to 8.12 GHz with bandwidth 10.10%, when a rectangular slot is incorporated in the initial patch. Finally, two parallel slots are embedded in the initial patch which improves the antenna bandwidth up to 21.50% (6.02-7.47 GHz). The gain and efficiency of this antenna are above 8.80 dBi and 90% respectively across the entire operating band. Radiation pattern is calculated at lower end (6.02 GHz), upper end (7.47 GHz) and centre frequency (6.75 GHz) of operating band. The proposed antenna is fabricated, and measured results are validated with the simulated ones.

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Compact wideband Koch fractal printed slot antenna

Cited by 74 publications

References 9 publications

A Novel Tri-Band Hexagonal Microstrip Patch Antenna Using Modified Sierpinski Fractal for Vehicular Communication

A Novel Tri-Band Hexagonal Microstrip Patch Antenna Using Modified Sierpinski Fractal for Vehicular Communication

Circularly Polarized Microstrip Antennas with Proximity Coupled Feed for Circularly Polarized Synthetic Aperture Radar

Butter Fly Shape Compact Microstrip Antenna for Wideband Applications

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