Amazon Technologies, Inc.

Deepak Pai Hosadurga

Jagan Vaidyanathan Rajagopalan

Akshay Mohan

In Chul Hyun

Mohammed Ziaul Azad

Yue Zheng

Chen Chen

Amit Shailesh Gaikwad

Sudheep Thota

Peruvemba Ranganath Sai Ananthanarayanan

Ming-Wei Liu

Amit Galkwad

A device such as an autonomous mobile device may include an extensible mast or other structure that changes length during operation. A cable between electronics at the ends of the structure includes a data line for signals and a power line for electrical power. A deployed length of the cable is determined and used to determine the phase of an antinoise signal that is radiated using the power line. The antinoise signal destructively interferes with at least a portion of the radiated noise from the data line, reducing the overall amplitude of the radiated noise. The deployed length may also be used to adjust other parameters, such as equalizer settings for one or more of a transmitter or receiver that is connected to the data line.

Electromagnetic noise cancellation apparatus for cable deployed at varying length

Technologies for dynamic noise cancelation using noise patterns are described. One device includes a moveable assembly having first and second degrees of freedom. A component within the base assembly radiates electromagnetic energy in a radiation pattern as a noise source when operating and an antenna, coupled to a receiver, is disposed on the support member. The processing device, using noise profile data about the radiation pattern of the noise source, determines that the component is operating and a current angle between the component and the antenna. The processing device determines a difference value between the current angle and the first angle and causes the moveable assembly to move at least one of the antenna or the base assembly according to the difference value.

Dynamic noise cancellation using noise patterns

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.

Media device with on-board patch antennas

High-speed data connectors having a variety of different implementations to address unwanted electromagnetic radiation and interference are described. In some instances, resonant unit structures are added within the existing connector cavity that absorb and dampen unwanted electromagnetic radiation. In other instances, resonant unit structures are added to the exterior of the connector to reduce and eliminate surface currents that can occur on the solid metal shield of the connector. In these and other instances, the resonant unit structure can be formed from a stacked structure having a resonant structure arranged in close proximity to some of the connector pins to absorb unwanted radiation from those pins. The absorbed energy is transferred to ground through other components in the stack. In still other instances, various different materials are provided to replace the conventional plastic material that is used to keep the connector pins in place and in alignment. The different materials can absorb unwanted electromagnetic radiation, and can be selected to address particular frequency ranges.

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Santa Clara, CA, United States of America

Deepak Pai Hosadurga