Broadband antenna and processes for manufacturing such an antenna
AssigneeThomson Licensing
InventorsJean-François Pintos, Olivier Mocquard, Jean-Luc Robert, Franck Thudor, Corinne Nicolas
Life of this patent
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Abstract
The present invention relates to a broadband monopole antenna comprising a “cup”-shaped radiating element mounted on an earth plane forming support of annular shape. This antenna can be used in the field of portable television apparatuses.
Claims8
Broadband monopole antenna, comprising a radiating element mounted on an earth plane forming support of annular shape, wherein the radiating element is constituted by a hollow element having a “cup” shape integral with the earth plane forming support, said radiating element and said support being made on the basis of a metallizable plastic or foam, the external profile of the “cup”-shaped radiating element being given by the following equations:
- For
-
-
- 1.3
- <
- t
- <
- 4.075
- x
-
- (
- t
- )
- =
- 8
- +
- 1.9
- *
- t
- *
- Cos
-
- (
- t
- -
- 7
- )
- z
-
- (
- t
- )
- =
- 2.5
- +
- 12.5
-
-
- Sin
-
- (
- t
- )
- t
- with t being a number varying between 1.3 and 4.075 and coordinates (x(t),z(t)) representing points along the profile.
Process for manufacturing a broadband monopole antenna comprising radiating element constituted by a hollow element having a “cup” shape, said radiating element being mounted on an earth plane forming support, said process comprising a step of making the “cup”-shaped radiating element integral with the earth plane forming support by injection moulding of a plastic followed by a step of metallizing at least the exterior surface of the “cup”-shaped element and of the part forming earth plane, the profile of the “cup” shaped element being given by the following equations:
- For
-
-
- 1.3
- <
- t
- <
- 4.075
- x
-
- (
- t
- )
- =
- 8
- +
- 1.9
- *
- t
- *
- Cos
-
- (
- t
- -
- 7
- )
- z
-
- (
- t
- )
- =
- 2.5
- +
- 12.5
-
-
- Sin
-
- (
- t
- )
- t
- with t being a number varying between 1.3 and 4.075 and coordinates (x(t),z(t)) representing points along the profile.
Process for manufacturing a broadband monopole antenna comprising a radiating element constituted by a hollow element having a “cup” shape, said radiating element being mounted on an earth plane, comprising a step of making the “cup”-shaped radiating element integral with the earth plane forming support by machining a single block of metallizable foam followed by a step of metallizing at least the hollow surface of the “cup”-shaped element and of the part forming earth plane, the profile of the “cup” shaped element being given by the following equations:
- For
-
-
- 1.3
- <
- t
- <
- 4.075
- x
-
- (
- t
- )
- =
- 8
- +
- 1.9
- *
- t
- *
- Cos
-
- (
- t
- -
- 7
- )
- z
-
- (
- t
- )
- =
- 2.5
- +
- 12.5
-
-
- Sin
-
- (
- t
- )
- t
- with t being a number varying between 1.3 and 4.075 and coordinates (x(t),z(t)) representing points along the profile.
Dependencies are inferred from the claim text.