IP Library › Granted Patent US 12665308

Granted Patent B2

US 12665308 · App. 18/709,277 · Granted Jun 23, 2026

Broadband low profile antenna devices and methods

Inventors: Gyles Panther (Ottawa, CA); Julien Hautcoeur (Gatineau, CA); Joseph Botros (Ottawa, CA); Reza Movahedinia (Stittsville, CA)

Assignee: Calian GNSS Ltd.

H01Q9/0428 G01S19/36 H01Q1/48 H01Q9/16

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Quick Facts

Patent No.: US 12665308
App. No.: 18/709,277
Granted: Jun 23, 2026
Kind: B2

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USPTO Patent Center↗ Full Patent PDF↗

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.

Claims (155)

1 . 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.

2 . The antenna according to claim 1 , wherein

the first element and second element of the dipole are aligned along an axis parallel to the ground plane; and

the first element and second element have a width of their metallization greater than a thickness of the metallization; and

the first element and second element are orientated such that either their width is along an axis orthogonal to the ground plane or along an axis parallel to the ground plane.

3 . The antenna according to claim 1 , wherein

the second distal end of the first element is separated from the first ground element by a first gap;

the first end of the parasitic element is separated from the first ground element by a second gap;

the second distal end of the second element is separated from the second ground element by a third gap;

the second end of the parasitic element is separated from the second ground element by a fourth gap; and

the parasitic element extends along the length of dipole from the second distal end of the first element to the second distal end of the second element.

4 . The antenna according to claim 1 , wherein

the parasitic element is disposed closer to the ground plane than the first element and second element of the dipole.

5 . The antenna according to claim 1 , wherein

either:

a portion of the first ground element is disposed between the second distal end of the first element and the first end of the parasitic element; and

a portion of the second ground element is disposed between the second distal end of the second element and the second end of the parasitic element;

or:

the first end of the parasitic element is disposed between the second distal end of the first element and a portion of the first ground element; and

the second end of the parasitic element is disposed between the second distal end of the second element and a portion of the second ground element.

6 . 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 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.

7 . The magnetic dipole according to claim 6 , wherein

the first element and second element of the dipole are aligned along an axis parallel to the ground plane; and

the first element and second element have a width of their metallization greater than a thickness of the metallization; and

the first element and second element are orientated such that either their width is along an axis orthogonal to the ground plane or along an axis parallel to the ground plane.

8 . The magnetic dipole according to claim 6 , wherein

the second distal end of the first element is separated from the first ground element by a first gap;

the first end of the parasitic element is separated from the first ground element by a second gap;

the second distal end of the second element is separated from the second ground element by a third gap;

the second end of the parasitic element is separated from the second ground element by a fourth gap; and

the parasitic element extends along the length of dipole from the second distal end of the first element to the second distal end of the second element.

9 . The antenna according to claim 6 , wherein

the parasitic element is disposed closer to the ground plane than the first element and second element of the dipole.

10 . The antenna according to claim 6 , wherein

either:

a portion of the first ground element is disposed between the second distal end of the first element and the first end of the parasitic element; and

a portion of the second ground element is disposed between the second distal end of the second element and the second end of the parasitic element;

or:

the first end of the parasitic element is disposed between the second distal end of the first element and a portion of the first ground element; and

the second end of the parasitic element is disposed between the second distal end of the second element and a portion of the second ground element.

11 . 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 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.

12 . The electric dipole according to claim 11 , wherein

the first element and second element of the dipole are aligned along an axis parallel to the ground plane; and

the first element and second element have a width of their metallization greater than a thickness of the metallization; and

the first element and second element are orientated such that either their width is along an axis orthogonal to the ground plane or along an axis parallel to the ground plane.

13 . The electric dipole according to claim 11 , wherein

the second distal end of the first element is separated from the first ground element by a first gap;

the first end of the parasitic element is separated from the first ground element by a second gap;

the second distal end of the second element is separated from the second ground element by a third gap;

the second end of the parasitic element is separated from the second ground element by a fourth gap; and

the parasitic element extends along the length of dipole from the second distal end of the first element to the second distal end of the second element.

14 . The antenna according to claim 11 , wherein

the parasitic element is disposed closer to the ground plane than the first element and second element of the dipole.

15 . The antenna according to claim 11 , wherein

either:

a portion of the first ground element is disposed between the second distal end of the first element and the first end of the parasitic element; and

a portion of the second ground element is disposed between the second distal end of the second element and the second end of the parasitic element;

or:

the first end of the parasitic element is disposed between the second distal end of the first element and a portion of the first ground element; and

the second end of the parasitic element is disposed between the second distal end of the second element and a portion of the second ground element.

16 . 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 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.

17 . The antenna according to claim 16 , wherein

the first element and second element of the dipole are aligned along an axis parallel to the ground plane; and

the first element and second element have a width of their metallization greater than a thickness of the metallization; and

the first element and second element are orientated such that either their width is along an axis orthogonal to the ground plane or along an axis parallel to the ground plane.

18 . The antenna according to claim 16 , wherein

the second distal end of the first element is separated from the first ground element by a first gap;

the first end of the parasitic element is separated from the first ground element by a second gap;

the second distal end of the second element is separated from the second ground element by a third gap;

the second end of the parasitic element is separated from the second ground element by a fourth gap; and

the parasitic element extends along the length of dipole from the second distal end of the first element to the second distal end of the second element.

19 . The antenna according to claim 16 , wherein

the parasitic element is disposed closer to the ground plane than the first element and second element of the dipole.

20 . The antenna according to claim 16 , wherein

either:

a portion of the first ground element is disposed between the second distal end of the first element and the first end of the parasitic element; and

a portion of the second ground element is disposed between the second distal end of the second element and the second end of the parasitic element;

or:

the first end of the parasitic element is disposed between the second distal end of the first element and a portion of the first ground element; and

the second end of the parasitic element is disposed between the second distal end of the second element and a portion of the second ground element.

21 . 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.

22 . The antenna according to claim 21 , wherein

the outer periphery of the annular parasitic element is disposed above the dipole and extends below a portion of the first ground element; and

the outer periphery of the annular parasitic element is disposed above the dipole and extends below a portion of the second ground element.

23 . The antenna according to claim 21 , wherein

the first ground element extends towards the center of the antenna to a first distance from the center of the dipole;

the second ground element extends towards the center of the antenna to the same first distance from the center of the dipole; and

the annular parasitic element comprises:

an annular ring having an outer radius less than the first distance;

a first tab extending outward from an outer periphery of the annular ring by a second distance such that the first tab extends out beyond the first distance and is disposed above the dipole and under a portion of the first ground element; and

a second tab extending outward from the outer periphery of the annular ring by the second distance such that the second tab extends out beyond the first distance and is disposed above the dipole and under a portion of the first ground element.

24 . The antenna according to claim 21 , wherein

the first element and second element of the dipole are aligned along an axis parallel to the ground plane; and

the first element and second element have a width of their metallization greater than a thickness of the metallization; and

the first element and second element are orientated such that either their width is along an axis orthogonal to the ground plane or along an axis parallel to the ground plane.

25 . The antenna according to claim 21 , wherein

the annular parasitic element is disposed closer to the ground plane than the first element and second element of the dipole.

26 . An antenna comprising:

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; wherein

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.

27 . 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;

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;

neither the first element nor second element are electrically coupled to a parasitic element disposed along a portion of the dipole.