DocumentCode
1067974
Title
The two-sheet capacitive Jaumann absorber
Author
Knott, E.F. ; Lunden, C.D.
Author_Institution
Concrete, WA, USA
Volume
43
Issue
11
fYear
1995
fDate
11/1/1995 12:00:00 AM
Firstpage
1339
Lastpage
1343
Abstract
Many Jaumann absorber designs rely on purely resistive sheets spaced λ/4 apart, and the designs are based on the requirement that the voltage reflection coefficient and its derivatives vanish at the center frequency. The thickness of the absorber can be reduced and its bandwidth considerably expanded if the sheets are allowed to have capacitive reactances in addition to pure resistance. The bandwidth can be expanded even more by imposing different design criteria. We illustrate those advantages by invoking what we call a double-notch design process for a simple two-sheet absorber
Keywords
electric reactance; electromagnetic wave absorption; absorber thickness; bandwidth; capacitive reactances; center frequency; design; double-notch design process; purely resistive sheets; two-sheet capacitive Jaumann absorber; voltage reflection coefficient; Antenna theory; Antennas and propagation; Bandwidth; Current distribution; Electromagnetic scattering; Frequency; Reflection; Resonance; Surface impedance; Surface resistance;
fLanguage
English
Journal_Title
Antennas and Propagation, IEEE Transactions on
Publisher
ieee
ISSN
0018-926X
Type
jour
DOI
10.1109/8.475112
Filename
475112
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