Antenna element and antenna module, and electronic equipment using same
An antenna element, an antenna module, and an electronic equipment using these, are small-sized, high in transmitting and receiving performance, and capable of transmitting and receiving electric waves at a plurality of frequencies. The antenna element includes two antennas having at least a feeder portion and an open portion, and current is fed to each feeder portion. The antenna module includes at least an antenna and a mounting body in which the antenna is mounted, and current is fed to each feeder portion. The electronic equipment includes at least the antenna element or antenna module, a signal modulator, a signal demodulator, a controller, a man-machine interface, and a casing.
1. An electronic device comprising:
a mounting body having a conductive area and a non-conductive area;
an antenna element mounted on the mounting body, the antenna element including a first antenna having a feeder portion and a conductor having a feeder portion, wherein the feeder portions are adapted to receive a common current;
a signal modulator for modulating transmitting signals;
a signal demodulator for demodulating receiving signals;
a controller operable to control processing of at least one of the signal modulator and the signal demodulator;
a man-machine interface for handling commands and displaying; and
a casing holding at least the antenna element, the signal modulator, the signal demodulator, and the controller,
wherein the antenna element is mounted on the non-conductive area such that the conductor is located between the first antenna and the conductive area.
2. The electronic device of claim 1 ,
wherein the conductor is a second antenna.
3. The electronic device of claim 2 ,
wherein the first and second antennas are disposed at an acute angle with respect to each other.
4. The electronic device of claim 3 ,
wherein the acute angle is in a range from 5 degrees to 60 degrees.
5. The electronic device of claim 2 ,
wherein at least one of the first and second antennas is a helical antenna.
6. The electronic device of claim 5 ,
wherein the helical antenna comprises:
a substrate;
a helical conductor provided on the substrate; and
a pair of terminals provided at the substrate.
7. The electronic device of claim 6 ,
wherein the helical conductor is a trimming groove formed in the substrate covered with a conductive layer.
8. The electronic device of claim 6 , further comprising:
a protective layer formed so as to cover at least the helical conductor.
9. The electronic device of claim 2 ,
wherein one of the first and second antennas is adapted to be fed current having a different phase than another of the first and second antennas.
10. The electronic device of claim 1 ,
wherein the conductor is disposed adjacent to an edge of the conductive area.
11. The electronic device of claim 2 , further comprising:
an additional conductor formed at an open end of one of the first and second antennas.