scholarly journals Design and Analysis of Sierpinski Carpet Fractal Antenna for UHF Spaced Antenna Wind Profiler Radar

2019 ◽  
Vol 9 (1) ◽  
pp. 839-842
Keyword(s):  
Loss Tangent ◽  
High Frequency ◽  
Dielectric Substrate ◽  
Wind Profiler ◽  
Fractal Antenna ◽  
Sierpinski Carpet ◽  
High Frequency Structure Simulator ◽  
Wind Profiler Radar ◽  
Sierpiński Carpet ◽  
Coaxial Probe

This paper emphasizes the design of Sierpinski carpet fractal antenna to miniaturize the antenna array of UHF Spaced antenna Wind profiler radar that operates at 445 MHz. The proposed antenna is designed using High Frequency Structure Simulator (HFSS) where aluminium is used as a patch and ground with air as dielectric substrate due to it’s zero loss tangent .patch is separated from ground with help of hinges and fed with 50 ohm coaxial probe. The Sierpinski fractal antenna is designed till third iteration so as to reduce its size and weight by 33 percent

CPW-Fed Wide Band Micro-machined Fractal Antenna with Band-notched Function

2020 ◽  
Vol 35 (8) ◽  
pp. 929-935
Author(s):  
Ashwini Kumar ◽  
Amar Pharwaha
Keyword(s):  
Integrated Circuits ◽  
Low Cost ◽  
Wide Band ◽  
Impedance Bandwidth ◽  
Fractal Antenna ◽  
Sierpinski Carpet ◽  
Antenna Structure ◽  
High Frequency Structure Simulator ◽  
Novel Structure ◽  
Sierpiński Carpet

In this paper, a straightforward yet effective design methodology to design wideband antenna with band notched characteristics has been proposed. Sierpinski carpet fractal geometry has been used to realize the antenna structure. Co-planar waveguide feed is used with a novel structure to achieve larger impedance bandwidth and band notching characteristics. Proposed antenna is designed using High Frequency Structure Simulator (HFSS) on a low cost FR4 substrate (ɛr=4.4) which resonates at three frequencies 1.51 GHz (1.19-2.06GHz), 6.53 GHz and 8.99 GHz (4.44-9.54 GHz) while a band is notched at 10.46 GHz (9.32-11.92 GHz). The proposed antenna has an electrical dimension of 0.36 λm× 0.24 λm, here λm is the wavelength with respect to lowest resonating frequency of the antenna. The resonating and radiation characteristics of the antenna are verified experimentally. Further, investigations are made to achieve easy integration of the antenna to the monolithic microwave integrated circuits. For that the antenna has been designed on micro-machined high index Silicon substrate which improve matching and gain of the antenna. The results of the micro-machined Sierpinski carpet fractal antenna are highly convincing over the conventional FR4 based antenna.

scholarly journals Antena UHF multifuncional del tipo fractal microstrip basada en la alfombra de Sierpinski

2021 ◽  
Vol 9 (17) ◽  
pp. 4-16
Author(s):  
Pablo Lupera Morillo ◽  
Gary Flores ◽  
Amanda Montaluisa
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Digital Tv ◽  
Area Network ◽  
Fractal Antenna ◽  
Sierpinski Carpet ◽  
Broadband Wireless ◽  
Rectangular Patch ◽  
Sierpiński Carpet

The use of multifunctional devices increases day by day. Mentioned devices, as smart tv, need appropriate and unified antennas which can meet required frequencies. Therefore, in this paper, a Sierpinski carpet microstrip fractal antenna in the second iteration is designed and fabricated for Digital Tv in UHF band and wireless wideband networks. It was verified that that the design of a fractal antenna based on the Sierpinski carpet is possible from a rectangular patch on iteration 0; however, it must be taken into account that the patch design must be carried out at a specific resonance frequency. Simulation is carried out using ADS simulator, and it was verified using a vector network analyzer. The proposed fractal antenna operates in the UHF digital TV range from 470 MHz to 683 MHz and in the 2.45 GHz to 2.4835 GHz range of broadband wireless local area network.

Optimum Patch Dimension Ratio of T-Shaped Microstrip Antenna

2013 ◽  
Vol 684 ◽  
pp. 303-306
Author(s):  
Eugene Rhee ◽  
Ji Hoon Lee
Keyword(s):  
High Frequency ◽  
Microstrip Antenna ◽  
Microstrip Line ◽  
Return Loss ◽  
Impedance Matching ◽  
Feeding Method ◽  
High Frequency Structure Simulator ◽  
Feeding Methods ◽  
Coaxial Probe ◽  
Dimension Ratio

There are various feeding methods of antenna like as coaxial probe, coupling, parasitic elements, and impedance matching. This paper adopted the microstrip line method as the feeding method of the antenna. The high frequency structure simulator is used to analyze the characteristics of the T-shaped microstrip antenna with various patch dimensions. In comparison with the basic microstrip antenna, this proposed T-shaped microstrip antenna with 40.38 % of patch dimensions has the optimum characteristics of resonant frequency, return loss, and radiation pattern at 2.0 GHz band.

Sierpinski Carpet Fractal Antenna with Harmonic Suppression Capability

2016 ◽  
Author(s):  
Nordalyana Murni Fadzil ◽  
Shipun Anuar Hamzah ◽  
Abdirahman Mohamud Shire ◽  
Khairun Nidzam Ramli ◽  
Fauziahanim Che Seman ◽  
...  
Keyword(s):  
Harmonic Suppression ◽  
Fractal Antenna ◽  
Sierpinski Carpet ◽  
Sierpiński Carpet
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