Reflecting material for antennas usable for high frequencies
US6154185A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 18, 1999 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | May 18, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S343/02
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An 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 2.0.times.10.sup.-3 .OMEGA..multidot.cm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.