Antenna having polarization diversity
AssigneeBroadcom Corporation
InventorsAlfred Grau Besoli, Nick Alexopoulos, Jesus Alfonso Casteneda
Life of this patent
Estimating the term…
Abstract
A compact antenna includes a main antenna patch. A first feed point and a second feed point connect with the main antenna patch to provide current in the main antenna. Excitation of the first feed point produces polarization in a first direction along the main antenna patch and excitation of the second feed point produces polarization in a second direction different from the first direction.
Claims20
A compact antenna, comprising:
- a main antenna patch;
- a first feed point and a second feed point connected with the main antenna patch to provide current to the main antenna;
- wherein excitation of the first feed point produces polarization in a first direction along the main antenna patch and excitation of the second feed point produces polarization in a second direction different from the first direction;
- and
- an auxiliary antenna patch, the auxiliary antenna patch positioned adjacent to the main antenna patch, an open space formed between the main antenna patch and the auxiliary antenna patch, the auxiliary antenna patch parasitically loads the main antenna patch to broaden a bandwidth of the antenna.
An endpoint device in communication with an other endpoint device, comprising:
- an antenna connected with the endpoint device to send communication signals to the other endpoint device and receive communication signals from the other endpoint device, the antenna having a first feed point and a second feed point, the antenna comprising a main patch and at least one auxiliary patch, an open space being formed between the main patch and the auxiliary patch, the auxiliary patch parasitically loading the main antenna patch to broaden a bandwidth of the antenna;
- an first electrical connector connected with the first feed point and a second electrical connector connected with the second feed point;
- and
- a controller connected with the endpoint device, the controller to direct excitation current to the first feed point and the second feed point, wherein excitation of the first feed point produces polarization in a first direction along the main patch and excitation of the second feed point produces polarization in a second direction different from the first direction.
A method for setting a desired direction of polarization of an antenna, comprising:
- exciting a first feed point with a current;
- exciting a second feed point with a current separately or together with the excitation of the first feed point;
- and
- wherein excitation of the first feed point produces polarization in a first direction along the antenna, excitation of the second feed point produces polarization in a second direction different from the first direction, and excitation of the first feed point and the second feed point together produces polarization in a third direction different than both the first direction and the second direction;
- and
- parasitically loading a main antenna patch included in the antenna using an auxiliary antenna patch included in the antenna to broaden a bandwidth of the antenna, the auxiliary antenna patch positioned adjacent to the main antenna patch so that an open space is formed between the main antenna patch and the auxiliary antenna patch.
The method of 19, wherein the four side patches are symmetrically shaped and symmetrically positioned around the main antenna patch.
Dependencies are inferred from the claim text.