|Table of Contents|

New Microwave Absorber Based on Resonant High-impedance Surface

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2010年01期
Page:
136-140
Research Field:
Publishing date:

Info

Title:
New Microwave Absorber Based on Resonant High-impedance Surface
Author(s):
ZHAO De-lin12SONG Yao-liang1ZHU Yan-ping13
1.School of Electronic Engineering and Optoelectronic Technology,NUST,Nanjing 210094,China;2.College of Mathematics and Physics,Nanjing University of Information Science and Technology,Nanjing 210044,China;3.College of Electronic & Information Engineering
Keywords:
microwave absorbers high-impedance surfaces resonance reflection coefficients
PACS:
TB34
DOI:
-
Abstract:
According to the electromagnetic propagation rule and the calculation methods of equivalent surface impedance,a new microwave absorber based on resonant high-impedance surface is proposed and designed.The theoretic analysis shows that the resonant surface without electric loss-sheet takes on a property of high-impedance in the frequency range of 2.95 to 4.15 GHz.But in this frequency range,it is a perfect absorber while the resonant surface is loaded with an ultra-thin electric loss-sheet with impedance matching to the free space.The bandwidth with the reflection coefficient of-10 dB or less is about 700 MHz,and the maximum absorption peak is at 3.55 GHz.The simulated results agree well with the analysis results.The design of the absorber is not only simple in structure,but also has characteristics of ultra-thin(1.5 mm thickness),ultra-light and wider bandwidth.

References:

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Last Update: 2012-11-02