Printed monopole antenna
First Claim
1. A printed monopole antenna having a ground plane defined substantially perpendicular thereto, comprising:
- (a) a first printed circuit board having a first side and a second side, said first printed circuit board lying in a plane substantially perpendicular to said ground plane;
(b) a monopole radiating element comprising a first conductive trace formed on said first printed circuit board first side, said first conductive trace having a physical length from a feed end to an opposite end; and
(c) a conductive element comprising a second conductive trace formed on said printed circuit board adjacent said first conductive trace, said second conductive trace having a physical length from a grounding end to an opposite end;
wherein said second conductive trace serves to extend said ground plane and prevents currents from radiating over that portion of said first conductive trace aligned with said second conductive trace, whereby said opposite end of said second conductive trace defines a virtual feedpoint for said first conductive trace.
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Accused Products
Abstract
A printed monopole antenna is disclosed having a printed circuit board with a first side and a second side, a monopole radiating element comprising a first conductive trace formed on the printed circuit board first side, and a conductive element comprising a second conductive trace formed on the printed circuit board adjacent the first conductive trace. The second conductive trace defines an extended ground plane which prevents the radiation of currents from that portion of the first conductive trace aligned with the second conductive trace. The second conductive trace may be formed on either side of the printed circuit board. The printed monopole antenna may be modified to operate within two separate frequency bandwidths.
53 Citations
24 Claims
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1. A printed monopole antenna having a ground plane defined substantially perpendicular thereto, comprising:
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(a) a first printed circuit board having a first side and a second side, said first printed circuit board lying in a plane substantially perpendicular to said ground plane; (b) a monopole radiating element comprising a first conductive trace formed on said first printed circuit board first side, said first conductive trace having a physical length from a feed end to an opposite end; and (c) a conductive element comprising a second conductive trace formed on said printed circuit board adjacent said first conductive trace, said second conductive trace having a physical length from a grounding end to an opposite end;
wherein said second conductive trace serves to extend said ground plane and prevents currents from radiating over that portion of said first conductive trace aligned with said second conductive trace, whereby said opposite end of said second conductive trace defines a virtual feedpoint for said first conductive trace. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An antenna for a communication device, a housing for said communication device defining a ground plane, comprising:
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(a) a feed port including a signal feed portion and a ground portion; (b) a printed circuit board having a first side and a second side, said printed circuit board lying in a plane substantially perpendicular to said ground plane; (c) a monopole radiating element comprising a first conductive trace formed on said printed circuit board first side, said first conductive trace having a physical length from a feed end coupled to said signal feed portion of said feed port to an opposite end; and (d) a conductive element comprising a second conductive trace formed on said printed circuit board adjacent said first conductive trace, said second conductive trace having a physical length from a grounding end coupled to said ground portion of said feed port to an opposite end, wherein said grounding end of said second conductive trace is located at the same end as said feed end of said first conductive trace; wherein said second conductive trace extends said ground plane and prevents currents from radiating over that portion of said first conductive trace aligned with said second conductive trace, whereby said opposite end of said second conductive trace defines a virtual feedpoint for said first conductive trace. - View Dependent Claims (21, 22, 23, 24)
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Specification