Glass antenna for an automobile
AssigneeAsahi Glass Company, Limited
InventorsAkiko Matsuoka, Hijiri Ichihara
Life of this patent
Estimating the term…
Abstract
A glass antenna for an automobile, comprising an antenna strip obtained by forming a linear silver paste on an automobile window glass sheet and firing the silver paste layer, wherein the electric resistance per unit length of the antenna strip is 0.2 Ω/cm or less, and in the coordinate plane defined by an ordinate which indicates a thickness t(μm) of antenna strip and an abscissa which indicates a width w(mm) of antenna strip, w and t exist in the region surrounded by the following curved line A1, straight line B1, straight line C1 and straight line C4: t=2.5/w . . . curved line A1, t=100 . . . straight line B1, w=0.05 . . . straight line C1 and w=0.41 . . . straight line C4
Claims12
A glass antenna for an automobile including an antenna strip, said antenna strip including a linear silver paste layer fired on an automobile window glass sheet, said antenna strip comprising:
- an electric resistance per unit length of the antenna strip of 0.2 Ω/cm or less;
- and
- an electric resistivity ρ of the silver paste of 5.0 μΩcm or more,
- wherein said antenna strip is defined by a curved line A1 with a thickness tA1 and a width wA1, a straight line B1 with a thickness tB1, a straight line C1 with a width wC1, and a straight line C4 with a width wC4, arranged to form antenna strip thicknesses t (μm) and antenna widths w (mm) as follows
- tA1=2.5/wA1,
- tB1=100,
- wC1=0.05, and
- wC4=0.41.
A glass antenna for an automobile including an antenna strip, said antenna strip including a linear silver paste layer fired on an automobile window glass sheet, said antenna strip comprising:
- an electric resistance per unit length of the antenna strip of 0.1 Ω/cm or less;
- and
- an electric resistivity ρ of the silver paste of 5.0 μΩcm or more,
- wherein said antenna strip is defined by a curved line D1 with a thickness tD1 and width wD1, a straight line B1 with a thickness tB1, and a straight line C4 with a width wC4, arranged to form antenna strip thicknesses t (μm) and antenna widths w (mm) as follows
- tD1=5.0/wD1,
- tB1=100, and
- wC4=0.41.
A glass antenna for an automobile including an antenna strip, said antenna strip including a linear silver paste layer fired on an automobile window glass sheet, said antenna strip comprising:
- an electric resistance per unit length of the antenna strip of 0.2 Ω/cm or less;
- and
- an electric resistivity ρ of the silver paste of 5.0 μΩcm or more,
- wherein said antenna strip is defined by a curved line A1 with a thickness tA1 and a width wA1, a straight line E with a thickness tE and a width wE and a straight line C4 with a width wC4 arranged to form antenna strip thicknesses t (μm) and antenna widths w (mm) as follows
- tA1=2.5/wA1 for curved line A1,
- tE=(40/0.3)wE+30, and
- wC4=0.41.
A glass antenna for an automobile including an antenna strip, said antenna strip including a linear silver paste layer fired on an automobile window glass sheet, said antenna strip comprising:
- an electric resistance per unit length of the antenna strip of 0.1 Ω/cm or less;
- and
- an electric resistivity ρ of the silver paste of 5.0 μΩcm or more,
- wherein said antenna strip is defined by a curved line D1 with a thickness tD1 and a width wD1, a straight line E with a thickness tE and a width wE and a straight line C4 with a width wC4, arranged to form antenna strip thicknesses t (μm) and antenna widths w (mm) as follows
- tD1=5.0/wD1,
- tE=(40/0.3)wE+30, and
- wC4=0.41.
Dependencies are inferred from the claim text.