Antenna element and mobile telephone device
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorHideyuki Soutome
Life of this patent
Estimating the term…
Abstract
A monopole antenna and a plurality of linear antennas each having its own predetermined electrical length are connected with a plate antenna, which is connected with a grounding plate via a single feeding point thereof, in such a way that they are connected in series to the feeding point, thereby, each of the feeding points of the antennas is united in one single point; consequently, an antenna device having broad band characteristics and multiple resonance characteristics is obtained.
Claims8
An antenna device comprising:
- a plate antenna formed of a metal plate having a predetermined electrical length and connected via a feeding point thereof with a grounding plate;
- a monopole antenna having an electrical length different from the electrical length of the plate antenna and being connected with the plate antenna;
- and
- a plurality of linear antennas connected with the plate antenna and each having an electrical length different from the other and different from both the electrical length of the plate antenna and the monopole antenna.
An antenna device comprising:
- a plate antenna formed of a metal plate having a predetermined electrical length and connected via a feeding point thereof with a grounding plate;
- a helical antenna having an electrical length different from the electrical length of the plate antenna and being connected with the plate antenna;
- and
- a plurality of linear antennas connected with the plate antenna and each having an electrical length different from the other and different from both the electrical length of the plate antenna and the helical antenna.
A portable telephone including an antenna device, the antenna device comprising:
- a plate antenna formed of a metal plate having a predetermined electrical length and connected via a feeding point thereof with a grounding plate;
- a monopole antenna having an electrical length different from the electrical length of the plate antenna and being connected with the plate antenna;
- and
- a plurality of linear antennas connected with the plate antenna and each having an electrical length different from the other and different from both the electrical length of the plate antenna and the monopole antenna.
Dependencies are inferred from the claim text.