Ethertronics, Inc.

Future Wei Technologies, Inc.

Huawei Technologies Co., Limited

Xiaomeng Su

Laurent Desclos

Sebastian Rowson

Jeffrey Shamblin

Chulmin Han

Alf Friman

Ting Ting Dong

Included is a mobile node (MN) comprising a first antenna configured to communicate with a wireless network, a second antenna configured to communicate with a wireless network, a first data line coupled to the first antenna, a second data line coupled to the second antenna, and a common ground trace coupled to the first data line and the second data line, wherein the first antenna and the second antenna are not directly connected to the common ground.

Two antennas in close proximity with signal isolation

A multi-frequency, noise optimized active antenna capable of transmit and receive operation consisting of one or several actively tuned antennas optimized over incremental bandwidths and capable of tuning over a large total bandwidth. One or several switches are integrated and provide the capability of operation of an active antenna for both transmit and receive functions. One or multiple impedance transformers are connected to the antennas at an optimal location, with the transformers acting to reduce the impedance for optimal coupling to a transceiver/receiver. Active components can be incorporated into the antenna structures to provide yet additional extension of the bandwidth along with increased optimization of antenna performance over the frequency range of the antenna. The radiating elements can be co-located with a ferrite material and/or active components coupled to the element to tune across a wide frequency range.

Transmit and receive low band antenna

A multi-frequency, noise optimized active antenna consisting of one or several actively tuned antennas optimized over incremental bandwidths and capable of tuning over a large total bandwidth. One or multiple impedance transformers are connected to the antennas at an optimal location, with the transformers acting to reduce the impedance for optimal coupling to a transceiver/receiver. Active components can be incorporated into the antenna structures to provide yet additional extension of the bandwidth along with increased optimization of antenna performance over the frequency range of the antenna. The radiating elements can be co-located with a ferrite material and/or active components coupled to the element to tune across a wide frequency range.

Multi-frequency, noise optimized active antenna

A spatial filter is developed for specific absorption rate (SAR) reduction in a wireless device. A conductive element is designed to modify the near field distribution of an antenna operating in a wireless device. This reduces SAR while minimizing degradation of antenna efficiency at one or several frequency bands that the antenna is designed to operate over. Lumped reactance can be designed into the conductive element to generate low pass, band pass, and/or high pass frequency characteristics. Distributed reactance can be designed into the conductive element to replace or to work in conjunction with the lumped reactance. Active components can be designed into the conductive element to provide dynamic tuning of the frequency response of the conductive element.

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San Diego, CA, United States of America

Xiaomeng Su