Low cost antenna design for wireless communications
First Claim
Patent Images
1. An antenna, comprising:
- a ground plane;
a radiating element mounted to the ground plane and having first and second branches spaced above the ground plane, wherein the first and second branches form a generally L shaped planar structure spaced above the ground plane;
a feeding leg supporting the first branch of the radiating element above the ground plane and electrically coupling the first branch to an RF feeding port; and
a grounding leg supporting the second branch of the radiating element above the ground plane and electrically coupling the second branch to the ground plane.
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Abstract
A low cost and multi-featured antenna is disclosed. The antenna employs a radiating element mounted to a ground plane and having first and second branches spaced above the ground plane forming a generally L shaped planar radiating structure. The antenna can be either linear or circular polarization, and can be either single band or dual band, and only one feeding port is needed to obtain circular polarization. The antenna can be easily applied to various frequency bands.
63 Citations
20 Claims
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1. An antenna, comprising:
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a ground plane; a radiating element mounted to the ground plane and having first and second branches spaced above the ground plane, wherein the first and second branches form a generally L shaped planar structure spaced above the ground plane; a feeding leg supporting the first branch of the radiating element above the ground plane and electrically coupling the first branch to an RF feeding port; and a grounding leg supporting the second branch of the radiating element above the ground plane and electrically coupling the second branch to the ground plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An antenna adapted for circularly polarized operation, comprising:
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a circuit board; a ground plane generally parallel to the circuit board; a radiating element coupled to the circuit board and ground plane and having first and second branches, wherein the first and second branches form a generally L shaped planar structure spaced above the circuit board; an RF feeding network formed on the circuit board having first and second branches; a first feeding leg supporting the first branch of the radiating element above the circuit board and ground plane and electrically coupled to the first branch of the RF feeding network; a second feeding leg supporting the second branch of the radiating element above the circuit board and ground plane and electrically coupled to the second branch of the RF feeding network; and a grounding leg coupled to the radiating element between the first and second feeding legs and electrically coupling the radiating element to the ground plane. - View Dependent Claims (14, 15, 16, 17)
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18. An antenna assembly, comprising:
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a ground plane; a first radiating element mounted to the ground plane and having first and second branches spaced above the ground plane, wherein the first and second branches form a generally L shaped planar structure spaced above the ground plane; a first feeding leg supporting the first branch of the first radiating element above the ground plane and electrically coupling the first branch to an RF feeding port; a first grounding leg supporting the second branch of the first radiating element above the ground plane and electrically coupling the second branch to the ground plane; a second radiating element mounted to the ground plane and having first and second branches spaced above the ground plane, wherein the first and second branches form a generally L shaped planar structure spaced above the ground plane; a second feeding leg supporting the first branch of the second radiating element above the ground plane and electrically coupling the first branch to an RF feeding port; and a second grounding leg supporting the second branch of the first radiating element above the ground plane and electrically coupling the second branch to the ground plane. - View Dependent Claims (19, 20)
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Specification