Antenna device
AssigneeYokowo Co., Ltd.
InventorsNoritaka Terashita, Motohisa Ono, Yuki Kato
Life of this patent
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Abstract
An antenna device includes: a planar antenna; and a metal body arranged a predetermined distance above the planar antenna, wherein the metal body is shifted in a predetermined direction with respect to the planar antenna, wherein the metal body is a metal plate and/or a parasitic element. The antenna device further includes an antenna which corresponds to a frequency band different from that of the planar antenna and a holder configured to maintain the predetermined distance between the planar antenna and the metal body, wherein the antenna is arranged in the predetermined direction.
Claims10
An antenna device configured to be attached to a vehicle, comprising:
- a case having an accommodating space formed therein and having a radio wave permeability;
- and
- an antenna portion configured to be accommodated in the accommodating space,
- wherein the antenna portion comprises:
- an antenna having a capacitance loading element;
- and
- two communication system antennas arranged such that the antenna having the capacitance loading element is interposed between the two communication system antennas,
- wherein at least one of the two communication system antennas is arranged below the capacitance loading element, and
- wherein the bandwidth of the frequencies used by the communication system antenna arranged below the capacitance loading element is narrow.
Dependencies are inferred from the claim text.