Back to results
US 6,486,847 B1Granted
Monopole antenna
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsAtsushi Yamamoto, Toshimitsu Matsuyoshi, Koichi Ogawa
Life of this patent
Estimating the term…
Abstract
The ground conductor, the side conductor, and the ceiling conductor surround the antenna element, which is connected to the coaxial power supply part arranged on the surface of the ground conductor. The ceiling conductor is arranged to face the ground conductor with the antenna element therebetween. The ceiling conductor is provided with an opening whose size, shape, and position are changed to vary the directivity of radio waves.
Claims22
A monopole antenna comprising:
- a ground conductor;
- a power supply part arranged on a surface of said ground conductor;
- an antenna element connected to said power supply part;
- a side conductor surrounding a space including said antenna element apart from said antenna element, said side conductor contacts said ground conductor;
- and
- a ceiling conductor facing said ground conductor with said antenna element therebetween, wherein an edge portion of said ceiling conductor contacts said side conductor and said ceiling conductor has at least one opening for radiating electromagnetic waves, said at least one opening being arranged in number and size in accordance with directivity of said electromagnetic waves to be radiated from said monopole antenna.
3 more elements
A monopole antenna comprising:
- a ground conductor;
- a power supply part arranged on a surface of said ground conductor;
- an antenna element connected to said power supply part;
- a side conductor surrounding a space including said antenna element apart from said antenna element;
- and
- a ceiling conductor facing said ground conductor with said antenna element therebetween,
- wherein an edge portion of said ceiling conductor is electrically connected to said side conductor,
- wherein said ceiling conductor has a circular central portion.
5 more elements
A monopole antenna comprising:
- a ground conductor;
- a power supply part arranged on a surface of said ground conductor;
- an antenna element connected to said power supply part;
- a side conductor surrounding a space including said antenna element apart from said antenna element;
- and
- a ceiling conductor facing said ground conductor with said antenna element therebetween, wherein at least one of said ground conductor, said side conductor, and said ceiling conductor has an opening;
- said monopole antenna
- further comprising means for adjusting the size of said opening.
5 more elements
A monopole antenna comprising:
- a ground conductor;
- a power supply part arranged on a surface of said ground conductor;
- an antenna element connected to said power supply part;
- a side conductor surrounding a space including said antenna element apart from said antenna element;
- and
- a ceiling conductor facing said ground conductor with said antenna element therebetween, wherein said ground conductor, side conductor and ceiling conductor operate as a transmitter or receiver of electromagnetic waves,
- wherein a dielectric member having permittivity higher than air is provided in a space surrounded by said ground conductor and said side conductor.
4 more elements
A monopole antenna comprising:
- a ground conductor;
- a power supply part arranged on a surface of said ground conductor;
- an antenna element connected to said power supply part;
- a side conductor surrounding a space including said antenna element apart from said antenna element, wherein a dielectric member having permittivity higher than air is provided in a space surrounded by said ground conductor and said side conductor, wherein said side conductor is made of a via hole formed in said dielectric member.
1 more element
A monopole antenna comprising:
- a ground conductor;
- a power supply part arranged on a surface of said ground conductor;
- an antenna element connected to said power supply part;
- a side conductor surrounding a space including said antenna element apart from said antenna element;
- a ceiling conductor facing said ground conductor with said antenna element therebetween;
- and
- at least one matching element arranged apart from said antenna element, said matching element being electrically connected to said ground conductor,
- wherein at least one said matching element is electrically connected to and contacts said ceiling conductor.
5 more elements
A radio device comprising:
- a monopole antenna;
- amplification means for amplifying transmission signals supplied to said monopole antenna and reception signals supplied from said monopole antenna;
- frequency selection means for selecting frequencies of the transmission signals and reception signals;
- and
- a cabinet for storing said monopole antenna, said amplification means, and said frequency selection means, wherein
- said monopole antenna comprises:
- a ground conductor, a power supply part arranged on a surface of said ground conductor;
- an antenna element connected to said power supply part;
- a side conductor surrounding a space including said antenna element, apart from said antenna element;
- a ceiling conductor facing said ground conductor with said antenna element therebetween;
- a dielectric member having permittivity higher than air provided in a space surrounded by said ground conductor and said side conductor;
- and an opening provided in at least one of said ground conductor, said side conductor, and said ceiling conductor, and
- said cabinet is provided with a concave portion on a surface thereof for storing said monopole antenna inside.
10 more elements
An arrangement structure of a monopole antenna comprising:
- a plurality of monopole antennas each comprising a ground conductor, a power supply part arranged on a surface of said ground conductor;
- an antenna element connected to said power supply part;
- a side conductor surrounding a space including said antenna element, apart from said antenna element;
- and a ceiling conductor facing said ground conductor with said antenna element therebetween, wherein
- said monopole antennas are arranged in a manner to conform the direction for minimizing the directivity of the horizontal plane of each of said monopole antennas.
2 more elements
A monopole antenna comprising:
- a ground conductor;
- a power supply part arranged on a surface of said ground conductor;
- an antenna element connected to said power supply part;
- a side conductor surrounding a space including said antenna element apart from said antenna element, said side conductor contacts said ground conductor;
- a ceiling conductor facing said ground conductor with said antenna element therebetween, wherein an edge portion of said ceiling conductor contacts said side conductor and said ceiling conductor has at least one opening for radiating electromagnetic waves, said at least one opening being arranged in number and size in accordance with directivity of said electromagnetic waves to be radiated from said monopole antenna;
- and
- at least one matching element arranged apart from said antenna element, said matching element being electrically connected to said ground conductor.
4 more elements
Dependencies are inferred from the claim text.