Spherical monopole antenna
First Claim
1. A spherical monopole antenna, comprising:
- a spherical conductor on a first side of a substrate, the spherical conductor electrically coupled to a connector via a tapered feeding line surrounded by a photopatternable die layer patternable by ultraviolet (UV) lithography, the photopatternable die layer located between the first side of the substrate and the spherical conductor, wherein a large end of the tapered feeding line is electrically coupled to the spherical conductor and surrounded by the photopatternable die layer, and a small end of the tapered feeding line is electrically coupled to the connector adjacent to the first side of the substrate, wherein a combined height of the photopatternable die layer and the spherical conductor disposed on the photopatternable die layer is approximately a quarter wavelength of a lowest operating frequency of the spherical monopole antenna; and
a ground plane disposed on the substrate, the ground plane surrounding at least a portion of the connector.
2 Assignments
0 Petitions
Accused Products
Abstract
Various examples are provided for spherical monopole antennas. In one example, among others, a spherical monopole antenna includes a spherical conductor on a first side of a substrate and a ground plane disposed on the substrate. The spherical conductor is electrically coupled to a connector via a tapered feeding line and the ground plane surrounds at least a portion of the connector on the second side of the substrate. In another example, among others, a method includes forming a tapered mold in a die layer disposed on a first side of a substrate, filling the tapered mold with a conductive paste, and disposing a spherical conductor on a large end of the tapered mold. The conductive paste is in contact with a signal line extending through the substrate into a small end of the tapered mold and in contact with the spherical conductor.
17 Citations
20 Claims
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1. A spherical monopole antenna, comprising:
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a spherical conductor on a first side of a substrate, the spherical conductor electrically coupled to a connector via a tapered feeding line surrounded by a photopatternable die layer patternable by ultraviolet (UV) lithography, the photopatternable die layer located between the first side of the substrate and the spherical conductor, wherein a large end of the tapered feeding line is electrically coupled to the spherical conductor and surrounded by the photopatternable die layer, and a small end of the tapered feeding line is electrically coupled to the connector adjacent to the first side of the substrate, wherein a combined height of the photopatternable die layer and the spherical conductor disposed on the photopatternable die layer is approximately a quarter wavelength of a lowest operating frequency of the spherical monopole antenna; and a ground plane disposed on the substrate, the ground plane surrounding at least a portion of the connector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification