Primary radiator suitable for miniaturization
First Claim
1. A primary radiator comprising:
- a waveguide having a closed end and an open end;
a probe which protrudes from an internal surface of said waveguide towards a central axis thereof; and
a dielectric feeder, which is held by said waveguide, wherein said dielectric feeder includes a radiation part which widens from an aperture of said waveguide, a phase-conversion part which has a plate shape and which is disposed at an angle of substantially 45 degrees from said probe, and an impedance-conversion part which is disposed between the radiation part and the phase-conversion part, said impedance-conversion part becoming narrower while arching towards an interior part of said waveguide, said phase-conversion part, said impedance-conversion part, and said radiation part being formed integrally.
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Accused Products
Abstract
A primary radiator includes a waveguide holding a dielectric feeder on which a radiation part, an impedance-conversion part, and a phase-conversion part are integrally formed. The radiator part widens from the aperture of the waveguide, and the phase-conversion part intersects a probe at an angle of substantially 45 degrees. Also, on the impedance-conversion part, a pair of curved surfaces are formed converging in the direction from the radiator part to the phase-conversion part, the impedance-conversion part has a cross-sectional shape which includes an approximately quadratic curve, and the thickness of the dielectric feeder converges such that the thickness gradually decreases in the direction from the radiator part to the phase-conversion part.
5 Citations
26 Claims
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1. A primary radiator comprising:
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a waveguide having a closed end and an open end;
a probe which protrudes from an internal surface of said waveguide towards a central axis thereof; and
a dielectric feeder, which is held by said waveguide, wherein said dielectric feeder includes a radiation part which widens from an aperture of said waveguide, a phase-conversion part which has a plate shape and which is disposed at an angle of substantially 45 degrees from said probe, and an impedance-conversion part which is disposed between the radiation part and the phase-conversion part, said impedance-conversion part becoming narrower while arching towards an interior part of said waveguide, said phase-conversion part, said impedance-conversion part, and said radiation part being formed integrally. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A primary radiator comprising:
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a waveguide; and
a dielectric feeder disposed in the waveguide and including;
a radiation part, a phase-conversion part, and an impedance-conversion part that connects the radiation part with the phase-conversion part, the impedance-conversion part tapering from the radiation part to the phase-conversion part and having a portion with a concave inner surface.- View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of decreasing a cost of a primary radiator having a dielectric feeder with a phase-conversion part, an impedance-conversion part, and a radiation part, the method comprising:
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integrally forming the phase-conversion part, the impedance-conversion part, and the radiation part; and
shaping the impedance-conversion part to taper and arch from the radiation part to the phase-conversion part. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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Specification