Composite antenna
An object of the present invention is to provide a small composite antenna that is capable of operating in a plurality of different frequency bands. A GPS first loop antenna 2 is formed on a dielectric substrate 10 . A VICS radio wave beacon second loop antenna 3 is formed on substantially the same...
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| Main Author | |
|---|---|
| Format | Patent |
| Language | English |
| Published |
04.11.2004
|
| Online Access | Get full text |
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| Abstract | An object of the present invention is to provide a small composite antenna that is capable of operating in a plurality of different frequency bands. A GPS first loop antenna
2
is formed on a dielectric substrate
10
. A VICS radio wave beacon second loop antenna
3
is formed on substantially the same axis within the first loop antenna
2
. In addition, an ETC patch antenna
4
is formed in the bottom face of a recess
12
provided substantially in the center of the dielectric substrate
10
. An earth pattern is formed over the whole of the underside of the dielectric substrate
10
. An arc-shaped first feed pattern is electromagnetically coupled to the first loop antenna
2
so as to supply electricity thereto and cause same to operate as a right-handed circularly polarized antenna. An arc-shaped second feed pattern is electromagnetically coupled to the second loop antenna
3
so as to supply electricity thereto. Electricity is supplied by a coaxial cable to the patch antenna
4
to cause same to operate as a right-handed circularly polarized antenna. |
|---|---|
| AbstractList | An object of the present invention is to provide a small composite antenna that is capable of operating in a plurality of different frequency bands. A GPS first loop antenna
2
is formed on a dielectric substrate
10
. A VICS radio wave beacon second loop antenna
3
is formed on substantially the same axis within the first loop antenna
2
. In addition, an ETC patch antenna
4
is formed in the bottom face of a recess
12
provided substantially in the center of the dielectric substrate
10
. An earth pattern is formed over the whole of the underside of the dielectric substrate
10
. An arc-shaped first feed pattern is electromagnetically coupled to the first loop antenna
2
so as to supply electricity thereto and cause same to operate as a right-handed circularly polarized antenna. An arc-shaped second feed pattern is electromagnetically coupled to the second loop antenna
3
so as to supply electricity thereto. Electricity is supplied by a coaxial cable to the patch antenna
4
to cause same to operate as a right-handed circularly polarized antenna. |
| Author | Inoue, Jinichi |
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| Snippet | An object of the present invention is to provide a small composite antenna that is capable of operating in a plurality of different frequency bands. A GPS... |
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| Title | Composite antenna |
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