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US 10,256,533 B2Granted
Antenna device
AssigneeSony Corporation
InventorsTakayuki Hirabayashi, Hiroyuki Shigei, Rikiya Ishikawa, Yu Togasaki, Osamu Kozakai
Life of this patent
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Abstract
An antenna device includes at least one antenna that transmits and receives communication signals, and a helix ground plate connected to the at least one antenna. The helix ground plate includes an overlapping part, and has a length of at least one-quarter of a wavelength of a lowest-frequency in the communication signals.
Claims17
An antenna device, comprising:
- at least one antenna configured to transmit and receive communication signals;
- and
- a helix ground plate connected to the at least one antenna, wherein
- the at least one antenna extends from an end of the helix ground plate in a longitudinal direction,
- the helix ground plate includes an overlapping part, and has a length of at least one-quarter of a wavelength of a lowest-frequency in the communication signals, and
- the helix ground plate and the at least one antenna form a helical shape, wherein
- at least one circuit interconnects the portions of the helix ground plate in the overlapping part,
- the at least one circuit includes a switch that selectively connects one of a parallel resonant circuit and a series resonant circuit, and
- the parallel resonant circuit includes a trap structure and the series resonant circuit includes a filter structure.
6 more elements
A device comprising:
- at least one antenna configured to transmit and receive communication signals;
- a helix ground plate connected to the at least one antenna, the at least one antenna extending from an end of the helix ground plate in a longitudinal direction, the helix ground plate including an overlapping part and having a length of at least one-quarter of a wavelength of a lowest-frequency in the communication signals, and the helix ground plate and the at least one antenna forming a helical shape, wherein
- at least one circuit interconnects the portions of the helix ground plate in the overlapping part,
- the at least one circuit includes a switch that selectively connects one of a parallel resonant circuit and a series resonant circuit, and
- the parallel resonant circuit includes a trap structure and the series resonant circuit includes a filter structure;
- and
- a display.
4 more elements
Dependencies are inferred from the claim text.