Design of H-shaped fractal antenna for microbolometer and its thermal performance estimation

In this paper, the design results of an H-shaped fractal antenna for application in multi-band microbolometers and the thermal performance estimation result of the microbolometer are reported. The H-shaped fractal antenna has been designed for wavelengths of 25 and 150 μm based on a dipole antenna f...

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Published in:Electronics letters 2014-09, Vol.50 (20), p.1-1
Main Authors: Takebe, K, Ikeshima, Y, Miyashita, H, Takano, K, Hangyo, M, Lee, S-S
Format: Article
Language:English
Subjects:
Antennas
Computer simulation
Dipping
Finite element method
Fractal analysis
Fractals
Incident waves
Voltage
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container_issue 20
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creator Takebe, K
Ikeshima, Y
Miyashita, H
Takano, K
Hangyo, M
Lee, S-S
description In this paper, the design results of an H-shaped fractal antenna for application in multi-band microbolometers and the thermal performance estimation result of the microbolometer are reported. The H-shaped fractal antenna has been designed for wavelengths of 25 and 150 μm based on a dipole antenna formula and finite element method (FEM) simulation. The simulation results show that the absorption peaks exist at 27 and 150 μm. To verify the absorption characteristics of the designed antenna, the antenna was fabricated and the absorption characteristics for the x-polarised incident wave radiated from the + z-direction were measured. The measured transmittance dips at 27 and 146 μm almost agreed with the absorption peaks of the simulation results. The thermal performance estimation of an H-shaped fractal antenna-coupled VO2 microbolometer and obtained voltage sensitivities of 0.63 and 4.81 mV/(W/m^sup 2^) at 27 and 150 μm absorption peaks, respectively, are also presented.
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source IET Digital Library Journals Archive 1872-2012; Wiley Open Access
subjects Antennas
Computer simulation
Dipping
Finite element method
Fractal analysis
Fractals
Incident waves
Voltage
title Design of H-shaped fractal antenna for microbolometer and its thermal performance estimation
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