AAWSAP DIRD, Metamaterials for Aerospace Applications, April 2010

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UNCLASSIFIED/ (EOR OFFICit.k W&E 8Htt
C I.
r
I.Lr
I
0.260
1.654
0.003
2
0.254
1.677
.023
3
0.-45
1.71
.052
4
0. 0
1.771
.0
0.20
I. 25
.1..0
6
0.190
I. 6
.1
7
0.17
1.9 I
. I
0.148
2.027
.220
9
0.129
2.110
.2 0
10
0.116
2.
0.279
-,-........,. _____.,___, ,---··, _ _ _ ,,.... .. ,~
in-plane lattice parameters are av= a,= 10/3 mm, The ring is square, with edge length I =3 mm and tracewidth w
= 0. 2 mm. The substrate is 381 µm-thick Duroid 5870 (E = 2.33, td = 0.0012 at 10 GHz, where td is the loss
ta ngent). The Cu film, from which t he SRRs are patterned, is 17 µm thick. The parameters rand s are given in the
ta ble together with the associated value of µ,. (Reference 6)
Electric properties of metamaterials can be similarly controlled. An example of a planar
electrically-active metamaterial is shown in Figure 2.
r1yun: .L , cxc1mp1t: u, i:I r111::cc1 mc1 c11::nc11 1.,umpun 11::nc; 1 n -
,.,_,..,_., _
--
Figure 2. Example of Another Metamaterial Component: Electric
Ring Resonator (ERR). This component provides tunable resonant
electric response to the incident electromagnetic field, and can be
utilized for engineering the frequency-dependent dielectric
permittivity &(w) . Possi ble application : THz and microwave absorbers,
(Reference 7)
UNCLASSIFIED/ {EAR OFFICIAk W81!!! Bflti
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