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In this paper we first list some of the features that are widely accepted as being facts regarding materials with simultaneously negative mu and epsiv, namely: (a) negative index of refraction; (b) advance of the phase of a signal as it moves away from the source; (c) an increase of the evanescent waves as they get further away from the source; and (d) while the E-and H-field in an ordinary material...
We compare design and measurements for a single-layer meanderline quarter-wave phase retarder, operating across the wavelength range from 8 to 12 micrometers (25 to 37.5 THz) in the infrared. The structure was fabricated using direct-write electron-beam lithography. With measured frequency-dependent material properties incorporated into a periodic-moment-method model, reasonable agreement is obtained...
To the authors' knowledge this paper is the first proof of concept of using meander line structures in the infrared domain. We have fabricated a single layer gold meander line on a high resistivity silicon substrate capable of changing the polarization state of the radiation from linear polarization at 43.5 plusmn 0.4 degrees to elliptical polarization with an eccentricity of .398 plusmn .008 and...
In this paper, an array of closely spaced slot elements has been designed to provide good wide angle scan performance with large bandwidth. The results are stable for a wide range of scan angles and frequencies. The calculated return loss for the design is less than 10 dB for scan angles from 45deg 70deg and for a bandwidth of 40%
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