A compact dual-band slot antenna based on Koch fractal snowflake annular ring

Yassen, Mahmood T.; Hussan, Mohammed R.; Hammas, Hussain A.; Al‐Saedi, Hussam; Ali, Jawad K.

doi:10.1109/piers.2017.8261826

Cited by 6 publications

(4 citation statements)

References 9 publications

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“…As the fractal keeps self-replicating limited to a certain space, with a space-filling behavior, the Chu limit for small antennas is approached with higher iterations [17]. Among fractal patterns, Koch snowflake is generated using an iterative function system on an equilateral triangle [18]; thus, the perimeter of the Koch loop curve is [19]:…”

Section: Fractal Designmentioning

confidence: 99%

Koch Snowflake Fractal Antenna Design in the Deep Space Bands for a Constellation of Cubesat Explorers

Palacios

Vargas

Stakem³

et al. 2021

Proceedings of CECNet 2021

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This paper presents the design and simulation of a Koch curve fractal antenna, developed according to the second iteration of the Koch snowflake fractal for S-band, C-band, X-band and Ku-band. The simulated antenna shows good performance for the operating frequencies and desirable gain, bandwidth and VSWR parameters. Being a compact antenna, it has a size, geometry and characteristics that go in accord with the CubeSat’s structure standards. The antenna was fabricated on a 1.5 mm thick FR-4 substrate. The VSWR achieved values are lower than 1.4 for the frequencies used (2.1 GHz to 2.4 GHz and 7.4 GHz to 8.9 GHz) with a simulated omnidirectional radiation pattern. A maximum gain of 6.8 dBi was achieved. As this antenna works optimally in the S, C and X bands, it is adequate for deep space applications, especially in low-power consumption systems. This approach would be ideal for constellations of Cubesat explorers.

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Section: Fractal Designmentioning

confidence: 99%

Koch Snowflake Fractal Antenna Design in the Deep Space Bands for a Constellation of Cubesat Explorers

Palacios

Vargas

Stakem³

et al. 2021

Proceedings of CECNet 2021

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“…4represents the number of sides in each iteration for the generation of Koch fractals and eq. (5) computes the length of each side after each iteration [13].…”

Section: A Antenna Design and Modellingmentioning

confidence: 99%

Ka-band Flexible Koch Fractal Antenna with Defected Ground Structure for 5G Wearable and Conformal Applications

Jilani

Aziz

Abbasi

et al. 2018

2018 IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)

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This paper demonstrates a low profile, compact and conformal antenna design for 5 th generation (5G) wireless devices. The antenna design incorporates two bandwidth-enhancement techniques of fractal geometry and defected ground structure (DGS). The Koch fractal radiating patch is developed with a DGS coupled coplanar waveguide (CPW) feeding. Highly precise fabrication is performed on a thin Polyethylene Terephthalate (PET) film using the additive manufacturing process of conductive ink-based inkjet printing. The results show that the antenna offers a bandwidth which covers Ka-band (26.5-40 GHz) and a peak realised gain of 9.7 dBi at 39.7 GHz. The integrated aperture in the ground improves the directivity by converging the radiation in the axis orthogonal to the antenna's plane. The proposed flexible antenna is well suited for integration in millimetre-wave (MMW) based wearable and conformal wireless devices.

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“…A Koch fractal snowflake annular ring slot antenna size is 40 × 40 mm 2 , and the resonance frequency is 2.38 to 3.03 and 4.45 to 5.06 GHz. Applying the third iteration in the work of Yassen et al 4 produced the fractal-shaped annular slot, and also it obtained the return loss of (approximately 20 dB). The coplanar waveguide-fed monopole antenna is used in the Hsieh et al 5 dual-band operation.…”

Section: Introductionmentioning

confidence: 98%