Low profile smart antenna for wireless applications and associated methods
First Claim
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1. A smart antenna comprising:
- a dielectric substrate;
an active antenna element carried by said dielectric substrate and having a T-shape;
at least one passive antenna element carried by said dielectric substrate and comprising an inverted L-shaped portion laterally adjacent said active antenna element; and
at least one impedance element selectively connectable to said at least one passive antenna element for antenna beam steering.
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Abstract
A low profile smart antenna includes an active antenna element carried by a dielectric substrate, and active antenna element has a T-shape. Passive antenna elements are carried by the dielectric substrate, and they have an inverted L-shaped portion laterally adjacent the active antenna element. Impedance elements are selectively connectable to the passive antenna elements for antenna beam steering.
24 Citations
37 Claims
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1. A smart antenna comprising:
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a dielectric substrate;
an active antenna element carried by said dielectric substrate and having a T-shape;
at least one passive antenna element carried by said dielectric substrate and comprising an inverted L-shaped portion laterally adjacent said active antenna element; and
at least one impedance element selectively connectable to said at least one passive antenna element for antenna beam steering. - View Dependent Claims (2, 4, 5, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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3. A smart antenna according to claim 3 wherein the top portion is symmetrically arranged with respect to the first portion, and includes a pair of inverted L-shaped ends.
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6. A smart antenna according to claim 6 wherein each impedance element is associated with a respective passive antenna element, each impedance element comprising an inductive load and a capacitive load, with said inductive load and said capacitive load being selectively connectable to the respective passive antenna element.
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18. A mobile subscriber unit comprising:
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a smart antenna for generating a plurality of antenna beams;
a beam selector controller connected to said smart antenna for selecting one of said plurality of antenna beams; and
a transceiver connected to said beam selector and to said smart antenna;
said smart antenna comprising a dielectric substrate, an active antenna element carried by said dielectric substrate and having a T-shape, at least one passive antenna element carried by said dielectric substrate and laterally adjacent said active antenna element, and at least one impedance element selectively connectable to said at least one passive antenna element for antenna beam steering. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method for making a smart antenna comprising:
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forming an active antenna element on a dielectric substrate, the active antenna element having a T-shape;
forming at least one passive antenna element on the dielectric substrate, the at least one passive antenna element comprising an inverted L-shaped portion laterally adjacent the active antenna element; and
forming at least one impedance element on the dielectric substrate that is selectively connectable to the at least one passive antenna element for antenna beam steering. - View Dependent Claims (32, 33, 34, 35, 36, 37)
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Specification