Amazon Technologies, Inc.

Mohammed Ziaul Azad

In Chul Hyun

Chen Chen

Amit Shailesh Gaikwad

Jagan Vaidyanathan Rajagopalan

Deepak Pai Hosadurga

Sudheep Thota

Ming-Wei Liu

Peruvemba Ranganath Sai Ananthanarayanan

Amit Galkwad

Devices, systems, and methods are provided for improving antenna isolation for collocated antennae. A device may include a first radio associated with a first antenna to transmit and receive first wireless signals using a first wireless communication technique. The device may include associated with a second antenna to transmit and receive second wireless signals using a second wireless communication technique. The device may include a multi-antenna isolation structure having a first portion and a second portion separated from the first portion, the first portion and the second portion are able to prevent the first antenna from receiving a portion of current associated with the second antenna.

Collocated radios with improved antenna isolation

Technologies directed to cylindrical antenna structures. One metallic cylindrical antenna structure includes a first surface, a second surface, and a side wall with a first height. The cylindrical antenna structure can have a low profile with the first height being less than 20 millimeters (mm). The side wall includes first and second slots, the first being centered at a first point on the side wall at a second height and oriented longitudinally along an azimuthal direction of the cylindrical antenna structure and the second being centered at a second point on the side wall at the second height and oriented longitudinally along the azimuthal direction. A feed structure is located on the center axis and is physically separated from the first and second surfaces. The cylindrical antenna structure radiates electromagnetic energy in an omnidirectional radiation pattern, responsive to a radio frequency (RF) signal being applied to the feed structure.

Low profile omnidirectional antenna

A streaming media player includes a printed circuit board, a video processor, a wireless communications processor, and a patch antenna. The patch antenna includes dielectric material, a conductive patch, and a first antenna feed in a first position with respect to the conductive patch. The patch antenna includes a second antenna feed in a second position with respect to the conductive patch. The first position is orthogonal to the second position. In an embodiment, the second position is rotationally offset from the first position by 90 degrees around an axis through a center of the conductive patch. The streaming media player includes a connector coupled to the video processor and configured to removably couple to a connection port on a display device.

Media device with on-board patch antenna with dual antenna feeds

A device includes a substrate and a video processor on the substrate. A first patch antenna is mounted to the substrate and configured to transmit and receive radio frequency signals in a frequency range. The first patch antenna is closer to a first end of the substrate than a second end of the substrate. A second patch antenna is mounted to the substrate and is configured to transmit and receive radio frequency signals in the frequency range. The second patch antenna is closer to the first end of the substrate than the second end of the substrate. The substrate includes a ground isolation region between at least one of the first patch antenna and the second patch antenna and the video processor. A media connector is on the substrate and electrically connected to the video processor.

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Pleasanton, CA, United States of America

Mohammed Ziaul Azad