Antenna device and portable radio using the same
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorKouta Aoki
Life of this patent
Estimating the term…
Abstract
An antenna device has an antenna element 1 with a feeding point 3 which is provided in the casing 3 of a portable radio. Furthermore, a conductor element is provided in the casing, supplied with power from the same feeding point as what is connected to the antenna element and excited in phase with the antenna element and in the positive polarity. The antenna element and the conductor element both function as antennas and even when radiation from the antenna element is restrained because the antenna element is situated close to or brought into contact with the human body, the radiation from the conductor element is made possible, whereby the gain of the antenna is prevented from deteriorating.
Claims14
An antenna device comprising:
- an antenna element having a feeding point which is provided in a casing of a portable radio;
- and
- a conductor element provided in said casing, to which a power is supplied from said feeding point;
- wherein said conductor element extends longitudinally from the feeding point in one direction and said antenna element extends longitudinally from the feeding point in an opposite direction;
- and
- wherein said conductor element is excited in phase with said antenna element and in the positive polarity.
A portable radio comprising:
- a casing;
- an antenna element having a feeding point which is provided in said casing;
- and
- a conductor element provided in said casing, to which power is supplied from said feeding point;
- wherein said conductor element extends longitudinally from the feeding point in one direction and said antenna element extends longitudinally from the feeding point in an opposite direction;
- and
- wherein said conductor element is excited in phase with said antenna element and in the positive polarity.
Dependencies are inferred from the claim text.