REFLECTING MATERIAL FOR ANTENNAS USABLE FOR HIGH FREQUENCIES

Title:

REFLECTING MATERIAL FOR ANTENNAS USABLE FOR HIGH FREQUENCIES

Document Type and Number:

WIPO Patent Application WO/1999/014821

Kind Code:

A1

Abstract:

A reflecting material for antennas containing a three-axis woven fabric usable for high frequency band ranging from 20 to 60 [GHz]. A reflecting material (1) for high-frequency band is fabricated by adjusting the weave density n, volume resistivity $g(r) and denier $g(h) of the three-axis woven fabric (2), without marring the merits of the three-axis woven fabric (2). In particular, parameters are set according to the composite model reflection factor $g(G), which is the sum of a first reflection factor $g(G)s based on the surface resistance of the three-axis woven fabric and a second reflection factor $g(G)p based on the aperture portion of the three-axis woven fabric. It is preferable that the weave density n is about 5 to 28 [yarns/in], the denier $g(h) is about 10 to 460 tex (g/1000 m), and the volume resistivity $g(r) is about 0.7 to 2.0 x 10?-3¿ [$g(V).cm].

Inventors:

WATANABE AKIHITO (JP)

Application Number:

PCT/JP1998/004233

Publication Date:

March 25, 1999

Filing Date:

September 18, 1998

Export Citation:

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Assignee:

SAKASE ADTECH CO LTD (JP)
WATANABE AKIHITO (JP)

International Classes:

H01Q15/14; (IPC1-7): H01Q15/14

Foreign References:

JPH07226619A	1995-08-22
JPH08307146A	1996-11-22
JPH08130409A	1996-05-21

Other References: