Multiple band printed monopole antenna
First Claim
1. A printed monopole antenna having a ground plane defined substantially perpendicular thereto and being operable within a first specified frequency band and a second specified frequency band, comprising:
- (a) a first 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;
(b) a monopole radiating element comprising a conductive trace formed on said printed circuit board first side, said conductive trace having an electrical length so as to have a primary resonance within said first specified frequency band;
(c) a feed port including a signal feed portion and a ground portion, said signal feed portion being coupled only to the feed end of said conductive trace; and
(d) a parasitic element formed on said printed circuit board second side, wherein no direct electrical connection exists between said monopole radiating element and said parasitic element, said parasitic element covering a specified area so as to tune said conductive trace to have a secondary resonance within said second specified frequency band.
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Accused Products
Abstract
A printed monopole antenna is disclosed including a printed circuit board having a first side and a second side, a monopole radiating element in the form of a conductive trace formed on one side of the printed circuit board, wherein the conductive trace has an electrical length in which primary resonance occurs within a first specified frequency band, and a parasitic element formed on the opposite side of the printed circuit board, wherein the parasitic element is designed to tune the conductive trace to a secondary resonance within a second specified frequency band. No direct electrical connection between the monopole radiating element and the parasitic element exists, but the coupling between such elements causes the secondary resonance of the radiating element to occur within the second frequency band.
24 Citations
32 Claims
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1. A printed monopole antenna having a ground plane defined substantially perpendicular thereto and being operable within a first specified frequency band and a second specified frequency band, comprising:
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(a) a first 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; (b) a monopole radiating element comprising a conductive trace formed on said printed circuit board first side, said conductive trace having an electrical length so as to have a primary resonance within said first specified frequency band; (c) a feed port including a signal feed portion and a ground portion, said signal feed portion being coupled only to the feed end of said conductive trace; and (d) a parasitic element formed on said printed circuit board second side, wherein no direct electrical connection exists between said monopole radiating element and said parasitic element, said parasitic element covering a specified area so as to tune said conductive trace to have a secondary resonance within said second specified frequency band. - 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. A printed monopole antenna having a ground plane defined substantially perpendicular thereto and being operable within a first specified frequency band and a second specified frequency band, comprising:
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(a) a substantially planar 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; (b) a monopole radiating element comprising a conductive trace formed on said printed circuit board first side, said conductive trace having an electrical length so as to have a primary resonance within said first specified frequency band; (c) a feed port including a signal feed portion and a ground portion, said signal feed portion being coupled only to the feed end of said first conductive trace; and (d) a non-resonant parasitic element formed on said printed circuit board second side, wherein no direct electrical connection exists between said monopole radiating element and said parasitic element, said parasitic element being positioned and configured to tune a secondary or higher mode resonant response of said conductive trace to said second specified frequency band which does not include an integer multiple of a frequency within said first specified frequency band.
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21. A printed monopole antenna having a ground plane defined substantially perpendicular thereto and being operable within a plurality of specified frequency bands, comprising:
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(a) a substantially planar printed circuit board having a first side, a second side, a feed end, and an open end, said printed circuit board lying in a plane substantially perpendicular to said ground plane; (b) a plurality of monopole radiating elements, each said monopole radiating element comprising a conductive trace formed on said printed circuit board first side, wherein each conductive trace has a specified electrical length so as to have a primary resonance within a first specified frequency band; and (c) a feed port including a signal feed portion and a ground portion, said signal feed portion being coupled only to the feed end of one said conductive trace; (d) a parasitic element formed on said printed circuit board second side, wherein no direct electrical connection exists between said monopole radiating elements and said parasitic element, said parasitic element covering a specified area so as to tune each of said conductive traces to have a secondary resonance within a second designated frequency band. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification