Low-profile parasitically-coupled patch antenna
AssigneeTrimble Inc.
InventorNuri Celik
Life of this patent
Estimating the term…
Abstract
A parasitically-coupled dual-band patch antenna is described. The antenna includes an inner conductor having one or more feed holes. The antenna also includes an outer conductor surrounding the inner conductor in a radial direction. The antenna further includes one or more feeds each having a vertical portion that passes through the feed holes and a horizontal portion that extends in an outward direction from the feed holes toward the outer conductor. The feeds are conductively connected to the outer conductor. The horizontal portion of each of the feeds is separated from and is conductively disconnected from a top surface of the inner conductor.
Claims20
An antenna structure comprising:
- an inner conductor having one or more feed holes, the inner conductor forming a high-frequency patch operable to receive radio waves at an upper frequency band;
- an outer conductor surrounding the inner conductor in a radial direction, the outer conductor forming a low-frequency patch operable to receive radio waves at a lower frequency band;
- and
- one or more feeds that respectively pass through one of the one or more feed holes in a vertical direction, the one or more feeds each including a horizontal portion that extends in an outward radial direction from the one or more feed holes toward the outer conductor and is conductively connected to the outer conductor, wherein the horizontal portion of each of the one or more feeds is tapered in the outward radial direction.
A global navigation satellite system (GNSS) receiver comprising:
- an antenna configured to receive radio waves at global navigation satellite system (GNSS) frequencies, the antenna comprising:
- an inner conductor having one or more feed holes, the inner conductor forming a high-frequency patch operable to receive radio waves at an upper frequency band;
- an outer conductor surrounding the inner conductor in a radial direction, the outer conductor forming a low-frequency patch operable to receive radio waves at a lower frequency band;
- and
- one or more feeds that respectively pass through one of the one or more feed holes in a vertical direction, the one or more feeds each including a horizontal portion that extends in an outward radial direction from the one or more feed holes toward the outer conductor and is conductively connected to the outer conductor, wherein the horizontal portion of each of the one or more feeds is tapered in the outward radial direction.
A method of receiving radio waves by an antenna structure, the method comprising:
- receiving, by a high-frequency patch of the antenna, radio waves at an upper frequency band, wherein the high-frequency patch is formed by an inner conductor having one or more feed holes;
- receiving, by a low-frequency patch of the antenna, radio waves at a lower frequency band, wherein the low-frequency patch is formed by an outer conductor surrounding the inner conductor in a radial direction;
- and
- carrying, using one or more feeds conductively connected to the outer conductor, the radio waves at the upper frequency band received by the high-frequency patch and the radio waves at the lower frequency band received by the low-frequency patch, wherein the one or more feeds respectively pass through one of the one or more feed holes in a vertical direction, the one or more feeds each including a horizontal portion that extends in an outward radial direction from the one or more feed holes toward the outer conductor and is conductively connected to the outer conductor, wherein the horizontal portion of each of the one or more feeds is tapered in the outward radial direction.
Dependencies are inferred from the claim text.