Dual frequency antenna
First Claim
1. Apparatus for receiving microwave signals having first and second distinct frequencies, the apparatus comprising:
- a substrate of dielectric material having a selected substrate thickness and having opposed first and second surfaces;
a first grounded layer of electrically conducting material, positioned on the first surface of the substrate;
a first conducting layer of electrically conducting material, positioned on the first surface of the substrate and formed as an annular strip that surrounds and is spaced apart from the first grounded layer; and
a second conducting layer of electrically conducting material, positioned in the interior of the substrate, facing and spaced apart from the first grounded layer, and electrically connected to the first conducting layer, said second conducting layer forming a solid, closed, substantially planar geometrical figure.
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Accused Products
Abstract
Antenna apparatus for receiving two distinct frequencies in the MHz or GHz range. A resonator layer of electrically conducting material is positioned in the interior of a dielectric layer that has first and second opposed surfaces (front and back). First and second ground planes are positioned on the first and second opposed surfaces of the substrate. The resonator is electrically connected to an annular strip of conducting material, positioned on the first substrate surface and surrounding the first ground plane. Two receiver feed connections, positioned at selected first and second positions on the patch resonator, receive distinct first and second frequencies. This apparatus may be used to receive the two GPS operating frequencies, the two GLONASS operating frequencies or two wireless LAN operating frequencies.
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Citations
34 Claims
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1. Apparatus for receiving microwave signals having first and second distinct frequencies, the apparatus comprising:
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a substrate of dielectric material having a selected substrate thickness and having opposed first and second surfaces; a first grounded layer of electrically conducting material, positioned on the first surface of the substrate; a first conducting layer of electrically conducting material, positioned on the first surface of the substrate and formed as an annular strip that surrounds and is spaced apart from the first grounded layer; and a second conducting layer of electrically conducting material, positioned in the interior of the substrate, facing and spaced apart from the first grounded layer, and electrically connected to the first conducting layer, said second conducting layer forming a solid, closed, substantially planar geometrical figure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. Apparatus for receiving microwave signals having first and second distinct frequencies, the apparatus comprising:
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a first substrate of dielectric material having a selected substrate thickness and having opposed first and second surfaces; a second substrate of dielectric material having a selected substrate thickness and having opposed first and second surfaces, with the first surface of the second substrate and the second surface of the first substrate facing each other; a first grounded layer of electrically conducting material, positioned on the first surface of the first substrate; a first conducting layer of electrically conducting material, and formed as an annular strip that surrounds and is spaced apart from the first grounded layer; and a second conducting layer of electrically conducting material, positioned between and contiguous to the second surface of the first substrate and the first surface of the second substrate and electrically connected to the first conducting layer, said second conducting layer forming a solid, closed, substantially planar geometrical figure. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. Apparatus for receiving and transmitting microwave signals having first and second distinct frequencies, the apparatus comprising:
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a grounded layer of electrically conducting material, defining a first plane; a first conducting layer of electrically conducting material, positioned substantially within said first plane and formed as an annular strip that surrounds and is spaced apart from the grounded layer; a second, substantially solid conducting layer of electrically conducting material defining a second plane spaced apart and substantially parallel to said first plane, said second conducting layer being electrically connected to the first conducting layer; and substrate means made from a dielectric material which separates said grounded layer and said first conducting layer from said second conducting layer, said substrate means physically supporting said grounded layer, said first conducting layer, and said second conducting layer; such that said second conducting layer, in conjunction with said first conducting layer, enhances the reception and transmission of a signal comprising a first distinct frequency and a second distinct frequency.
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Specification