Antenna device
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsToshiki MORI, Ken TAKAHASHI, Koji TAKINAMI, Kosei NAKANO
Life of this patent
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Abstract
This antenna device comprises: a substrate; an antenna element formed on the surface of the substrate; a line which is formed on the surface of the substrate and connects the antenna element and a control circuit for controlling the impedance characteristics of the antenna element; and a circuit that is formed on the surface of the substrate and suppresses a high-frequency signal superposed on the line. A first electrical length in the thickness direction of the substrate in a section where the antenna element is formed and a second electrical length in the thickness direction of the substrate in a section where the circuit is formed are different.
Claims11
An antenna apparatus, comprising:
- a board;
- an antenna element that is formed on a front surface of the board;
- a line that is formed on the front surface of the board and connects the antenna element and a control circuit, the control circuit controlling an impedance characteristic of the antenna element;
- and
- a circuit that is formed on the front surface of the board and suppresses a high-frequency signal superposed on the line, wherein
- a first electrical length and a second electrical length are different from each other, the first electrical length being an electrical length in a thickness direction of the board in a portion where the antenna element is formed, the second electrical length being an electrical length in the thickness direction of the board in a portion where the circuit is formed.
Dependencies are inferred from the claim text.