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US 7,460,068 B2Granted
Distributed phase type circular polarized wave antenna, high-frequency module using the same, and portable radio communication terminal using the same
AssigneeHitachi Cable, Ltd.
InventorsKen Takei, Tomoyuki Ogawa
Life of this patent
Estimating the term…
Abstract
A distributed phase type circular polarized wave antenna provided with a plane, a power feed point 4 formed on the plane; and narrow conductor groups 1, 2 composed of narrow conductors 101 having a substantially one-dimensional current distribution, the narrow conductor groups being distributed in two dimension on the plane, and sums of projections of complex vectors of current distributions induced on the narrow conductors in first and second directions orthogonal to each other defined on the plane are determined in amplitude and phase, such that amplitudes are approximately equal to each other and a phase difference is approximately 90°.
Claims13
A distributed phase circular polarized wave antenna, comprising:
- a power feed point;
- a first conductor plate comprising a plurality of narrow conductors having a substantially one-dimensional current distribution and distributed in two dimensions;
- a second conductor plate comprising a plurality of narrow conductors having the substantially one-dimensional current distribution and distributed in the two dimensions;
- and
- a coupling conductor for connecting the first conductor plate and the second conductor plate,
- wherein the power feed point is provided such that a grounding potential is connected to one of the narrow conductors composing the first and second conductor plates and an excitation potential is connected to another of the narrow conductors composing the first and second conductor plates, and
- wherein sums of projections of complex vectors of current distributions induced on the narrow conductors in first and second directions orthogonal to each other defined on the first conductor plate and second conductor plate are determined in amplitude and phase, such that amplitudes are approximately equal to each other and a phase difference is approximately 90°.
4 more elements
A high-frequency module, comprising:
- a distributed phase circular polarized wave antenna which comprises:
- a power feed point;
- a first conductor plate comprising a plurality of narrow conductors having a substantially one-dimensional current distribution and distributed in two dimensions;
- a second conductor plate comprising a plurality of narrow conductors having the substantially one-dimensional current distribution and distributed in the two dimensions;
- and
- a coupling conductor for connecting the first conductor plate and the second conductor plate,
- wherein the power feed point is provided such that a grounding potential is connected to one of the narrow conductors composing the first and second conductor plates and an excitation potential is connected to another of the narrow conductors composing the first and second conductor plates, and
- wherein sums of projections of complex vectors of current distributions induced on the narrow conductors in first arid second directions orthogonal to each other defined on the first conductor plate and the second conductor plate are determined in amplitude and phase, such that amplitudes are approximately equal to each other and a phase difference is approximately 90°.
5 more elements
A portable radio communication terminal, comprising:
- a distributed phase circular polarized wave antenna which comprises:
- a power feed point;
- a first conductor plate comprising a plurality of narrow conductors having a substantially one-dimensional current distribution and distributed in two dimensions;
- a second conductor plate comprising a plurality of narrow conductors having the substantially one-dimensional current distribution and distributed in the two dimensions;
- and
- a coupling conductor for connecting the first conductor plate and the second conductor plate,
- wherein the power feed point is provided such that a grounding potential is connected to one of the narrow conductors composing the first and second conductor plates and an excitation potential is connected to another of the narrow conductors composing the first and second conductor plates, and
- wherein sums of projections of complex vectors of current distributions induced on the narrow conductors in first and second directions orthogonal to each other defined on the first conductor plate and the second conductor plate are determined in amplitude and phase, such that amplitudes are approximately equal to each other and a phase difference is approximately 90°.
5 more elements
A portable radio communication terminal, comprising:
- a high-frequency module including a distributed phase circular polarized wave antenna which comprises:
- a power feed point;
- a first conductor plate comprising a plurality of narrow conductors having a substantially one-dimensional current distribution and distributed in two dimensions;
- a second conductor plate comprising a plurality of narrow conductors having the substantially one-dimensional current distribution and distributed in the two dimensions;
- and
- a coupling conductor for connecting the first conductor plate and the second conductor plate,
- wherein the power feed point is provided such that a grounding potential is connected to one of the narrow conductors composing the first and second conductor plates and an excitation potential is connected to another of the narrow conductors composing the first and second conductor plates, and
- wherein sums of projections of complex vectors of current distributions induced on the narrow conductors in first and second directions orthogonal to each other defined on the first conductor plate and the second conductor plate are determined in amplitude and phase, such that amplitudes are approximately equal to each other and a phase difference is approximately 90°.
5 more elements
Dependencies are inferred from the claim text.