US 11,990,670 B2
Direct air-to-ground antenna systems for aircraft
Leslie Smith, Leguevin (FR)
Assigned to Airbus SAS, Blagnac (FR)
Appl. No. 17/439,086
Filed by Airbus SAS, Blagnac (FR)
PCT Filed Mar. 13, 2020, PCT No. PCT/IB2020/052330
§ 371(c)(1), (2) Date Sep. 14, 2021,
PCT Pub. No. WO2020/188450, PCT Pub. Date Sep. 24, 2020.
Claims priority of provisional application 62/818,973, filed on Mar. 15, 2019.
Prior Publication US 2022/0158333 A1, May 19, 2022
Int. Cl. H01Q 1/28 (2006.01); H01Q 3/44 (2006.01); H01Q 9/42 (2006.01); H01Q 19/32 (2006.01); H01Q 21/26 (2006.01); H01Q 21/29 (2006.01)
CPC H01Q 1/28 (2013.01) [H01Q 3/446 (2013.01); H01Q 9/42 (2013.01); H01Q 19/32 (2013.01); H01Q 21/26 (2013.01); H01Q 21/29 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A vehicle comprising:
a body, and
an antenna system, the antenna system comprising:
a plurality of crossed dipole antennas arranged in an array and mounted to the body of the vehicle, configured and arranged to provide two orthogonal polarizations and supporting two spatial data streams, with a gain of at least +10 dB,
two switched Yagi antenna arrays mounted to the body of the vehicle, configured and arranged to provide a third orthogonal polarization, and with each Yagi antenna array providing 180° azimuth coverage, with more than a +5 dB gain at an 5° elevation, and with each Yagi antenna array providing one data stream,
wherein each switched Yagi antenna comprises:
a folded monopole extending from a body of the vehicle, which body is configured and arranged to act as a groundplane,
a reflector positioned to one side of the folded monopole and also extending from the body of the vehicle,
a set of one or more directors positioned opposite the one side of the folded monopole where the reflector is positioned,
wherein the one or more directors, the folded monopole and the reflector form a linearly aligned array.