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US 6,906,674 B2Granted
Aperture antenna having a high-impedance backing
Assigneee-tenna Corporation
InventorsWilliam E. McKinzie, III, James T. Aberle
Life of this patent
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Abstract
An antenna comprises a conductive member having an opening for radiating an electromagnetic signal. A circuit board is spaced apart from the conductive member by less than one-quarter wavelength of the electromagnetic signal. The circuit board has a series of conductive cells for suppressing at least one propagation mode propagating between the conductive member and circuit board over a frequency bandwidth range defined by a geometric arrangement of the conductive cells.
Claims32
An antenna comprising:
- a conductive member having an opening for radiating an electromagnetic signal, the conductive member having a first surface area bounded by a first perimeter;
- and
- a high-impedance backing spaced apart from the conductive member by less than one quarter of a free space wavelength of the electromagnetic signal, the high-impedance backing having a second surface area, bounded by a second perimeter, commensurate in size with the first surface area, the high-impedance backing having an array of conductive cells arranged for suppressing at least one propagation mode from propagating between the conductive member and the high-impedance backing over a certain frequency range.
A circuit board assembly comprising:
- a conductive member having an opening for radiating an electromagnetic signal;
- a substrate for supporting a series of conductive cells and vias for suppressing at least one propagation mode from propagating between the conductive member and the substrate over a certain frequency range;
- and
- a ground plane of the substrate spaced apart from the conductive member by less than one quarter free space wavelength of the electromagnetic signal.
1 more element
Dependencies are inferred from the claim text.