High-efficiency broadband antenna
First Claim
1. An antenna system, comprising:
- a D-plate including a D-plate feed conductor, wherein the D-plate is a horizontal conductor raised above and insulated from a ground plane;
an E-cylinder including an E-cylinder feed conductor, wherein the E-cylinder is a vertical hollow conductive cylinder of smaller diameter than the D-plate, which is mounted concentrically above and insulated from the D-plate;
a transmitter tuning circuit configured to receive a signal from a transmitter;
an E-cylinder tuning circuit operably coupled to the transmitter tuning circuit and the E-cylinder feed conductor; and
a D-plate tuning circuit operably coupled to the transmitter tuning circuit and the D-plate feed conductor;
wherein an E-cylinder tuning circuit reactance and a D-plate tuning circuit reactance are set such that approximately equal power is provided to the E-cylinder and the D-plate, and a transmitter tuning circuit reactance is set based at least in part on the E-cylinder tuning circuit reactance and the D-plate tuning circuit reactance.
1 Assignment
0 Petitions
Accused Products
Abstract
Techniques for tuning a crossed-field antenna are provided. An example of an antenna system includes a D-plate with a D-plate feed conductor, such that the D-plate is a horizontal conductor raised above and insulated from a ground plane, an E-cylinder with an E-cylinder feed conductor, such that the E-cylinder is a vertical hollow conductive cylinder of smaller diameter than the D-plate, which is mounted concentrically above and insulated from the D-plate, a transmitter tuning circuit configured to receive a signal from a transmitter, an E-cylinder tuning circuit operably coupled to the transmitter tuning circuit and the E-cylinder feed conductor, and a D-plate tuning circuit operably coupled to the transmitter tuning circuit and the D-plate feed conductor.
6 Citations
20 Claims
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1. An antenna system, comprising:
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a D-plate including a D-plate feed conductor, wherein the D-plate is a horizontal conductor raised above and insulated from a ground plane; an E-cylinder including an E-cylinder feed conductor, wherein the E-cylinder is a vertical hollow conductive cylinder of smaller diameter than the D-plate, which is mounted concentrically above and insulated from the D-plate; a transmitter tuning circuit configured to receive a signal from a transmitter; an E-cylinder tuning circuit operably coupled to the transmitter tuning circuit and the E-cylinder feed conductor; and a D-plate tuning circuit operably coupled to the transmitter tuning circuit and the D-plate feed conductor; wherein an E-cylinder tuning circuit reactance and a D-plate tuning circuit reactance are set such that approximately equal power is provided to the E-cylinder and the D-plate, and a transmitter tuning circuit reactance is set based at least in part on the E-cylinder tuning circuit reactance and the D-plate tuning circuit reactance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of tuning a crossed-field antenna including an E-cylinder and D-plate, wherein the E-cylinder and the D-plate are operably coupled to a tuning network including a transmitter feed tuning circuit, an E-cylinder tuning circuit, and a D-plate tuning circuit, the method comprising:
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determining a current ratio to provide approximately equal power to the E-cylinder and the D-plate; setting a reactance of the E-cylinder tuning circuit and a reactance of the D-plate tuning circuit based on the current ratio; determining a combined impedance value based at least in part on the reactance of the E-cylinder tuning circuit and the reactance of the D-plate tuning circuit; and setting a reactance of the transmitter feed tuning circuit based on the combined impedance value. - View Dependent Claims (10, 11, 12, 13)
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14. A tuning system for coupling a transmitter with a crossed-field antenna, the crossed-field antenna including an E-cylinder and a D-plate, the tuning system comprising:
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an E-cylinder tuning circuit operably coupled to the E-cylinder; a D-plate tuning circuit operably coupled to the D-plate; a transmitter feed tuning circuit operably coupled to the transmitter, the E-cylinder tuning circuit, and the D-plate tuning circuit; and a controller operably coupled to the transmitter feed tuning circuit, the E-cylinder tuning circuit, and the D-plate tuning circuit, the controller including at least one processor configured to; set an E-cylinder tuning circuit reactance and a D-plate tuning circuit reactance such that approximately equal power is provided to the E-cylinder and the D-plate; and set a transmitter feed tuning circuit reactance based at least in part on the E-cylinder tuning circuit reactance and the D-plate tuning circuit reactance. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification