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US 2001/0043157 A1Published application
Wideband patch antenna with L-shaped probe
AssigneeCity University of Hong Kong
InventorsKwai Man Luk, Yung Chow, Chi Lun Mak
Life of this patent
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AssigneeCity University of Hong Kong
InventorsKwai Man Luk, Yung Chow, Chi Lun Mak
Estimating the term…
An antenna design comprises a patch that may be rectangular, circular, triangular or any other geometric shape and which is disposed by a dielectric a distance above a ground plane. The patch is driven by an L-shaped probe disposed between the patch and the ground plane. The probe has a first portion normal to both the patch and the ground plane, and a second portion parallel to the patch and the ground plane. The lengths of the two portions are selected so that the inductive reactance of the first portion is cancelled by the capacitive reactance of the second portion. In alternative embodiments a plurality of such patch antennas may be connected together via a single transmission network to form an antenna array.
An antenna comprising a patch disposed above a ground plane and spaced therefrom by a dielectric material, and an L-shaped probe disposed between said patch and said ground plane, said L-shaped probe having a first portion normal to said ground plane and said patch, and a second portion parallel to said ground plane and said patch, said antenna further comprising means for connecting said probe to means for transmitting a signal to or from said antenna, and said first portion of said L-shaped probe extending through said ground plane, wherein both said first portion and said second portion of said L-shaped probe are adapted to be electromagnetically coupled to said patch.
An antenna comprising a rectangular patch of dimensions Wx by Wy disposed above a ground plane and spaced therefrom by a dielectric material by a distance H, and an L-shaped probe disposed between said patch and said ground plane, said L-shaped probe having a first portion of length Lh normal to said ground plane and said patch, and a second portion of length Lv parallel to said ground plane and said patch and spaced from one edge of the patch by a distance S, said antenna or comprising means for connecting said probe to means for transmitting a signal to or from said antenna, wherein said antenna has the dimensions:
An antenna array comprising a plurality of patches disposed above a ground plane and spaced therefrom by a dielectric material, each said patch having a respective L-shaped probe disposed between said patch and said ground plane, each said L-shaped probe having a first portion normal to said ground plane and said patch, and a second portion parallel to said ground plane and said patch, said antenna array further comprising a transmission network connecting said probes to each other and to means for transmitting a signal to or from said antenna array.
An antenna array comprising two rectangular patches having dimensions W×L disposed above a ground plane and spaced a distance H1 therefrom by a dielectric material, each said patch having a respective L-shaped probe disposed between said patch and said ground plane, each said L-shaped probe having a first portion normal to said ground plane and said patch, and a second portion parallel to said ground plane spaced by a distance H2 therefrom and having a length D, said antenna array further comprising a transmission line connecting said probes to each other and to means for transmitting a signal to or from said antenna array, said transmission line being parallel to said ground plane and spaced therefrom by a distance H3, said transmission line having a width S and a thickness S and a length λ/2, and wherein
A wideband antenna comprising a patch disposed above a ground plane and spaced therefrom by a dielectric material having a thickness (H) in the range of from 0.08λ to 0.12λ (where λ is the wavelength of the electromagnetic radiation the antenna is adapted to receive), and an L-shaped probe disposed between said patch and said ground plane, said L-shaped probe having a first portion having a length (Lh) normal to said ground plane and said patch, and a second portion having a length (Lv) parallel to said ground plane and said patch, said antenna further comprising means for connecting said probe to means for transmitting a signal to or from said antenna, and said first portion of said L-shaped probe having a length extending through said ground plane, wherein both said first portion and said second portion of said L-shaped probe are adapted to be electromagnetically coupled to said patch, and wherein the first portion has an inductive reactance (XL) and the second portion has a capacitive reactance (Xc) such that XL+Xc≈0.
Dependencies are inferred from the claim text.