US 12,665,308 B2 · Broadband low profile antenna devices and methods

Abstract

Competing tradeoffs of overall footprint, weight, and performance impact the design of antennas for many applications. However, those for compact portable devices or mobile platforms exploiting global navigation satellite systems these are further compounded by seeking good performance over a wide angular range. Accordingly, it would be beneficial to provide designers of a wide range of electrical devices and systems with compact broadband antennas which offer a low vertical profile relative to that provided by the common filar element approaches for high precision applications. Accordingly, through a combination of a dipole, a parasitic element, and additional ground elements to a convention ground plane the inventors provide broadband high performance antenna designs with low profile and low overall footprint.

Claims27

Dependent claims

An antenna comprising:

a ground plane;
a dipole comprising a first element and a second element;
a feed point centrally disposed between a first end of the first element and a first end of the second element coupled to the first end of the first element and the first end of the second element;
a parasitic element disposed parallel to the dipole having a first end disposed proximate a second distal end of the first element and a second distal end disposed proximate a second distal end of the second element;
a first ground element coupled at a first end to the ground plane disposed proximate the second distal end of the first element and proximate the first end of the parasitic element;
a second ground element coupled at a first end to the ground plane disposed proximate the second distal end of the second element and proximate the second end of the parasitic element.

3 more elements

A magnetic dipole responsive to a linear magnetic field comprising:

a ground plane;
a dipole comprising a first element and a second element disposed above the ground plane;
a feed point centrally disposed between a first end of the first element and a first end of the second element coupled to the first end of the first element and the first end of the second element;
a parasitic element disposed parallel to the dipole having a first end disposed proximate a second distal end of the first element and a second distal end disposed proximate a second distal end of the second element;
a first ground element coupled at a first end to the ground plane disposed proximate the second distal end of the first element and proximate the first end of the parasitic element;
a second ground element coupled at a first end to the ground plane disposed proximate the second distal end of the second element and proximate the second end of the parasitic element.

3 more elements

An electric dipole responsive to a linear electric field comprising:

a ground plane;
a dipole comprising a first element and a second element disposed above the ground plane;
a feed point centrally disposed between a first end of the first element and a first end of the second element coupled to the first end of the first element and the first end of the second element;
a parasitic element disposed parallel to the dipole having a first end disposed proximate a second distal end of the first element and a second distal end disposed proximate a second distal end of the second element;
a first ground element coupled at a first end to the ground plane disposed proximate the second distal end of the first element and proximate the first end of the parasitic element;
a second ground element coupled at a first end to the ground plane disposed proximate the second distal end of the second element and proximate the second end of the parasitic element.

3 more elements

An antenna responsive to circularly polarized signals comprising:

a ground plane;
a first antenna element disposed upon a first side of the ground plane;
and
a second antenna element disposed upon the first side of the ground plane orthogonal to the first antenna element;
wherein
the antenna is responsive at any positive elevation above the first side of the ground plane;
and
each of the first antenna element and the second antenna element comprise:
a dipole comprising a first element and a second element disposed above the ground plane;
a feed point centrally disposed between a first end of the first element and a first end of the second element coupled to the first end of the first element and the first end of the second element;
a parasitic element disposed parallel to the dipole having a first end disposed proximate a second distal end of the first element and a second distal end disposed proximate a second distal end of the second element;
a first ground element coupled at a first end to the ground plane disposed proximate the second distal end of the first element and proximate the first end of the parasitic element;
a second ground element coupled at a first end to the ground plane disposed proximate the second distal end of the second element and proximate the second end of the parasitic element.

10 more elements

An antenna comprising:

a ground plane;
a dipole comprising a first element and a second element disposed above the ground plane;
a feed point centrally disposed between a first end of the first element and a first end of the second element coupled to the first end of the first element and the first end of the second element;
an annular parasitic element disposed parallel to the dipole having a first end disposed proximate a second distal end of the first element and a second distal end disposed proximate a second distal end of the second element where the annular parasitic element is electrically coupled to the dipole, a first ground element and a second ground element;
the first ground element being coupled at a first end to the ground plane disposed proximate the second distal end of the first element and proximate an outer periphery of the annular parasitic element;
the second ground element being coupled at a first end to the ground plane disposed proximate the second distal end of the second element and proximate the outer periphery of the annular parasitic element wherein
a center of the annular parasitic element is aligned with a center of the dipole.

4 more elements

An antenna to receive or generate circularly polarized signals comprising:

a ground plane;
a first antenna element disposed upon a first side of the ground plane;
and
a second antenna element disposed upon the first side of the ground plane orthogonal to the first antenna element;
wherein
the antenna is responsive at any positive elevation above the first side of the ground plane;
and
each of the first antenna element and the second antenna element comprise:
a ground plane;
a dipole comprising a first element and a second element each disposed parallel to the ground plane;
a feed point centrally disposed between a first end of the first element and a first end of the second element coupled to the first end of the first element and the first end of the second element;
a first ground element coupled at a first end to the ground plane disposed proximate the second distal end of the first element and having a portion extending vertically from the ground plane to a defined height above the ground plane directly connected to another portion extending over the first element for a defined distance from the second distal end of the first element with a constant separation from the first element;
and
a second ground element coupled at a first end to the ground plane disposed proximate the second distal end of the second element and having a portion extending vertically from the ground plane to a defined height above the ground plane directly connected to another portion extending over the second element for a defined distance from the second distal end of the second element with a constant separation from the second element;
the first element is absent any portion of the first ground element over the any remaining portion of the first element from the defined distance from the second distal end of the first element;
the second element is absent any portion of the second ground element over the any remaining portion of the second element from the defined distance from the second distal end of the second element;
and
neither the first element nor second element are electrically coupled to a parasitic element disposed along a portion of the dipole.

15 more elements

Dependencies are inferred from the claim text.

Broadband low profile antenna devices and methods

Life of this patent

Broadband low profile antenna devices and methods

Life of this patent

Abstract

Claims27