Plane antenna and method for manufacturing the same
First Claim
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1. A method for manufacturing a plane antenna that coats dielectric with conductor and forms a pattern free of the conductor using a surface of the dielectric which is otherwise coated with conductor and is made of material having a coefficient of water absorption of 0.01% or less, said method comprising the step of:
- molding the dielectric to form the pattern therein through injection molding using a mold that includes the pattern, forming a first conductor film on the dielectric formed by said molding step, using electroless plating, evaporation or sputtering; and
forming a second conductor film on the dielectric on which the first conductor film has been formed by said step of forming a first conductor film.
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Abstract
A method for manufacturing a plane antenna that coats dielectric with conductor and forms a pattern free of the conductor on a surface of the dielectric which is otherwise coated with conductor includes the step of molding the dielectric and the pattern through injection molding using a mold that has the pattern.
13 Citations
8 Claims
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1. A method for manufacturing a plane antenna that coats dielectric with conductor and forms a pattern free of the conductor using a surface of the dielectric which is otherwise coated with conductor and is made of material having a coefficient of water absorption of 0.01% or less, said method comprising the step of:
molding the dielectric to form the pattern therein through injection molding using a mold that includes the pattern, forming a first conductor film on the dielectric formed by said molding step, using electroless plating, evaporation or sputtering; and
forming a second conductor film on the dielectric on which the first conductor film has been formed by said step of forming a first conductor film. - View Dependent Claims (2, 3, 4)
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5. A plane antenna comprising a plate dielectric and a conductor that coats a surface of the dielectric, the plate antenna forming a resonant slot of a predetermined pattern at a predetermined position uncovered with the conductor,
wherein the dielectric is made of a material having a coefficient of water absorption of 0.01% or less, and has a convex section forming the pattern at the predetermined position, wherein the conductor is arranged approximately as high as the dielectric around the dielectric having the convex section and forms a convex section together with the dielectric having the convex section; - and
wherein said plane antenna serves as a high frequency wave array antenna for use with 50 GHz or higher.
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6. A plane antenna comprising a plate dielectric and a conductor that coats a surface of the dielectric, the plate antenna forming a resonant slot of a predetermined pattern at a predetermined position on the dielectric uncovered with the conductor,
wherein the dielectric is made of material having a coefficient of water absorption of 0.01% or less, and has a convex section forming the pattern at the predetermined position, wherein the conductor is arranged approximately as high as the dielectric around the dielectric having the convex section, and forms a convex section together with the dielectric having the convex section, and wherein d≦ - h≦
λ
g/10 is satisfied where d is a thickness of the conductor at a location other than the predetermined position, λ
g is a wavelength of an electric wave, and h is a height of the dielectric having the convex section. - View Dependent Claims (7)
- h≦
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8. A plane antenna comprising a plate dielectric and a conductor that coats a surface of the dielectric, the plate antenna forming a resonant slot of a predetermined pattern at a predetermined position on the dielectric uncovered with the conductor,
wherein the dielectric is made of material having a coefficient of water absorption of 0.01% or less, and has a convex section forming the pattern at the predetermined position, wherein the conductor is arranged approximately as high as the dielectric around the dielectric having the convex section, and forms a convex section together with the dielectric having the convex section, and wherein 25 μ - m≦
h≦
250 μ
m is satisfied where h is a height of the dielectric having the convex section.
- m≦
Specification