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Transparent wave absorber using resistive thin film at V-band frequency

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2 Author(s)
Takizawa, Koji ; TDK, Chiba, Japan ; Hashimoto, O.

We present a realization of a transparent wave absorber effective for use at V-band frequency. First, we propose a structure of the transparent wave absorber consisting of spacer (polycarbonate) and two transparent resistive sheets (polyethylene-terephthalate deposited with indium-tin-oxide) used as reflection and absorption films. Second, a design chart for this type of wave absorber is shown. Third, a design method and manufacturing process of the transparent wave absorber are described, particularly for V-band frequency. As a result, the measurement of reflection loss of the absorber indicates that a peak absorption of 32-38 dB is attained at a target frequency of 60 GHz

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:47 ,  Issue: 7 )