| 摘要 |
PCT No. PCT/JP98/04233 Sec. 371 Date May 18, 1999 Sec. 102(e) Date May 18, 1999 PCT Filed Sep. 18, 1998 PCT Pub. No. WO99/14821 PCT Pub. Date Mar. 25, 1999An antenna-oriented reflecting material using triaxial woven fabric is usable for frequency bands as high as 20-60 GHz. A reflecting material 1 usable for the high frequency bands is manufactured without spoiling advantages of triaxial woven fabric 2 by controlling mainly a construction n, a volume resistivity rho and a mass per unit length eta of the triaxial woven fabric. Particularly the setting of each parameter is determined by a composite model reflection ratio GAMMA obtained from a sum of a first reflection ratio GAMMA 's based on a surface resistance of the triaxial woven fabric and a second reflection ratio GAMMA p based on opening, holes of the triaxial woven fabric. It is preferable that a construction be 5-28 yards/in a mass per unit length eta be 10-460 tex g/1000 m, and a volume resistivity rho be 0.7 to 2.0x10-3 OMEGA xcm.
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