Meny

Javascript is not activated in your browser. This website needs javascript activated to work properly.
Du är här

On the physical limit of radar absorbers

Författare:
Publiceringsår: 2010
Språk: Engelska
Sidor: 10
Publikation/Tidskrift/Serie: Technical Report LUTEDX/(TEAT-7191)/1-10/(2010)
Dokumenttyp: Rapport

Sammanfattning

A previous investigation has shown that at normal angle of incidence, the integral of the reflectance over wavelength is bounded for a flat metal backed absorber. The bound is applicable to any absorber made of linear, time-invariant, causal and passive materials. We generalize the physical bound to arbitrary angle of incidence and polarization. Different design examples and numerical calculations are provided to investigate the inequalities. It is shown that the theoretical limit for TE polarization results in fair approximations of the integral of the reflectance over wavelength but the TM polarization overestimates the integral value. A simple relation for estimating the optimal thickness of a nonmagnetic absorber is suggested for arbitrary angle of incidence.

Disputation

Nyckelord

  • Technology and Engineering

Övriga

Published
TEAT-7191
  • Electromagnetic theory

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen