Antenna and method for steering antenna beam direction for WiFi applications
First Claim
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1. A dual-band active steering antenna assembly comprising:
- a ground plane;
an antenna radiating element forming an antenna volume between the antenna radiating element and the ground plane;
a first parasitic element positioned outside the antenna volume of the antenna radiating element and configured to tune the antenna radiating element in a first Wi-Fi frequency band; and
a second parasitic element positioned outside the antenna volume of the antenna radiating element and configured to tune the antenna radiating element in a second Wi-Fi frequency band;
an active component configured to vary a current flow through at least one of the first parasitic element or the second parasitic element.
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Abstract
An antenna comprising an IMD element and one or more parasitic and active tuning elements is disclosed. The IMD element, when used in combination with the active tuning and parasitic elements, allows antenna operation at multiple resonant frequencies. In addition, the direction of antenna radiation pattern may be arbitrarily rotated in accordance with the parasitic and active tuning elements. Unique antenna architectures for beam steering in Wi-Fi band applications is further described.
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Citations
18 Claims
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1. A dual-band active steering antenna assembly comprising:
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a ground plane; an antenna radiating element forming an antenna volume between the antenna radiating element and the ground plane; a first parasitic element positioned outside the antenna volume of the antenna radiating element and configured to tune the antenna radiating element in a first Wi-Fi frequency band; and a second parasitic element positioned outside the antenna volume of the antenna radiating element and configured to tune the antenna radiating element in a second Wi-Fi frequency band; an active component configured to vary a current flow through at least one of the first parasitic element or the second parasitic element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A dual-band active steering antenna assembly comprising:
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a ground plane; an antenna radiating element positioned adjacent to the ground plane, the antenna radiating element forming an antenna volume between the antenna radiating element and the ground plane; a first parasitic element positioned on a first side of the antenna radiating element and outside the antenna volume of the antenna radiating element, and configured to tune the antenna radiating element; and a second parasitic element positioned on a second side of the antenna radiating element that is opposite the first side, the second parasitic element positioned outside the antenna volume of the antenna radiating element and configured to tune the antenna radiating element; wherein the antenna assembly is tuned to radiate in a 2.4 GHz and a 5 GHz band; wherein the antenna radiating element comprises at least one loop region that is open toward the first parasitic element. - View Dependent Claims (16, 17)
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18. A dual-band active steering antenna assembly comprising:
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a ground plane; an antenna radiating element forming an antenna volume between the antenna radiating element and the ground plane; a first parasitic element positioned outside the antenna volume of the antenna radiating element and configured to tune the antenna radiating element in a first Wi-Fi frequency band; and a second parasitic element positioned outside the antenna volume of the antenna radiating element and configured to tune the antenna radiating element in a second Wi-Fi frequency band a lumped reactance component coupled between a first portion and a second portion of the first parasitic element.
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Specification