Antenna

• US 20060139212A1
• Filed: 11/16/2005
• Published: 06/29/2006
• Est. Priority Date: 11/17/2004
• Status: Active Grant

• Current Assignee: Jasco Trading (Proprietary) Limited
• Original Assignee: Jasco Trading (Proprietary) Limited
• Inventors: Reuss, Terry
• Granted Patent: US 7,221,321 B2
• Time in Patent Office: Days
• US Class Current: 343/700.MS
• CPC Class Codes: H01Q 5/364 Creating multiple current paths
• CPC Class Codes: H01Q 9/0407 Substantially flat resonant element parallel to ground plane, e.g. patch antenna dipole H01Q9/285; monopole H01Q9/40
• CPC Class Codes: H01Q 9/0428 radiating a circular polarised wave
• CPC Class Codes: H01Q 9/0442 with particular tuning means

Abstract

An antenna includes a multi sided electrical conductor forming a ground plane has two diagonals of different lengths. A multi sided electrical conductor forming a radiator has two diagonals of different lengths and a dielectric substrate is connected to the ground plane and to the radiator thereby to separate the ground plane from the radiator.

Claims

1. An antenna including:

a multi sided electrical conductor forming a ground plane, wherein two diagonals of the ground plane are of different lengths;

a multi sided electrical conductor forming a radiator wherein two diagonals of the radiator are of different lengths; and

a dielectric substrate connected to the ground plane and to the radiator thereby to separate the ground plane from the radiator.

2. An antenna according to claim 1 wherein the dielectric substrate is of a constant thickness.

3. An antenna according to claim 1 wherein the ground plane, radiator and dielectric substrate are of substantially the same shape.

4. An antenna according to claim 1 wherein a co-axial feed point is connected to the radiator in the centre a shorter side of the radiator.

5. An antenna according to claim 1 wherein the electrical conductor forming the radiator has four non-conductive slots formed therein.