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This page displays all 「FI」 in main group H01Q19/00. |
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Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic | HB | CC | 5J020 | |
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.Details | HB | CC | 5J020 | |
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..Means for collapsing H-antennas or Yagi antennas | HB | CC | 5J020 | |
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.using refracting or diffracting devices, e.g. lens | HB | CC | 5J020 | |
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..for modifying the radiation pattern of a radiating horn in which it is located | HB | CC | 5J020 | |
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..wherein the primary active element is coated with or embedded in a dielectric or magnetic material (protective material H01Q 1/40; with variable characteristics H01Q 3/44) [3] | HB | CC | 5J020 | |
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.using reflecting surfaces | HB | CC | 5J020 | |
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..wherein the surfaces are concave (H01Q 19/18 takes precedence) [3] | HB | CC | 5J020 | |
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...the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination (H01Q 19/15 takes precedence) [3] | HB | CC | 5J020 | |
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...the primary radiating source being a line source, e.g. leaky waveguide antennas [3] | HB | CC | 5J020 | |
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...the primary radiating source comprising two or more radiating elements (H01Q 19/15, H01Q 25/00 take precedence) [3] | HB | CC | 5J020 | |
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..having two or more spaced reflecting surfaces (producing pencil beam by two cylindrical reflectors with their focal lines orthogonally disposed H01Q 19/20) | HB | CC | 5J020 | |
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...wherein the surfaces are plane [3] | HB | CC | 5J020 | |
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...comprising one main concave reflecting surface associated with an auxiliary reflecting surface [3] | HB | CC | 5J020 | |
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....wherein a reflecting surface acts also as a polarisation filter or a polarising device [3] | HB | CC | 5J020 | |
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.Producing pencil beam by two cylindrical focusing devices with their focal lines orthogonally disposed | HB | CC | 5J020 | |
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.using a secondary device in the form of a single substantially straight conductive element | HB | CC | 5J020 | |
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..the primary active element being centre-fed and substantially straight, e.g. H-antenna | HB | CC | 5J020 | |
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..the primary active element being end-fed and elongated | HB | CC | 5J020 | |
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.using a secondary device in the form of two or more substantially straight conductive elements (log-periodic antennas H01Q11/10; constituting a reflecting surface H01Q19/10) | HB | CC | 5J020 | |
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..the primary active element being centre-fed and substantially straight, e.g. Yagi antenna | HB | CC | 5J020 | |
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..the primary active element being end-fed and elongated | HB | CC | 5J020 | |