Antenna structure
AssigneeBAE SYSTEMS pc
InventorsRobert Ian Henderson, James Christopher Gordon Matthews
Life of this patent
Estimating the term…
Abstract
A wearable antenna assembly incorporates a coplanar waveguide feed in one of the arms of a two-arm spiral antenna. The antenna has relatively high impedance compared with the feed line from a suitable radio but the coplanar waveguide feed is simply modified to provide a quarter-wave transformer adjacent to the feed connection to the antenna and at least one further impedance transformation step on a tangential extension of the feed at the outer edge of the spiral antenna.
Claims16
1-14. (canceled)
An antenna assembly for use as a wearable antenna, the antenna comprising at least two spiral arms, one of the arms being constructed to provide a feed structure to a feed connection to at least one other arm in the central region of the spiral antenna, the feed structure comprising a coplanar waveguide.
An antenna assembly comprising at least two spiral arms, one of the arms being constructed to provide a feed structure to a feed connection to at least one other arm in the central region of the spiral antenna, the feed structure comprising a coplanar waveguide, for use at radio frequencies.
An antenna assembly comprising at least two spiral arms, one of the arms being constructed to provide a feed structure to a feed connection to at least one other arm in the central region of the spiral antenna, the feed structure comprising a coplanar waveguide, constructed from a conductive, flexible material for attachment to a wearable fabric.
A garment comprising an antenna assembly, the antenna assembly comprising at least two spiral arms, one of the anus being constructed to provide a feed structure to a feed connection to at least one other arm in the central region of the spiral antenna, the feed structure comprising a coplanar waveguide.
Dependencies are inferred from the claim text.