Arris Enterprises LLC

Qualcomm Incorporated

Commscope Technologies LLC

Anand Krishnamachari

Douglas Blake Kough

Craig Owens

William Buel

Eran Dor

Peter H Liu

Manjunath Anandarama Krishnam

Hassan Kaywan Afkhami

Purva Rameshchandra Rajkotia

Karl-Heinz Fackler

Rainer Friedrich

Syed Adil Hussain

James W Jervis

Rajesh Koganti

Edmund W Chen

Antenna systems for access points and other wireless radio units include an RF ground plane, a radiating element mounted in front of the RF ground plane, and a coaxial feed cable coupled to the radiating element. The cable jacket includes a first opening that exposes a first portion of an outer conductor of the coaxial feed cable so that the cable jacket is on either side of the first opening along a longitudinal direction of the coaxial feed cable. The first portion of the outer conductor is galvanically connected to the RF ground plane via a first direct galvanic connection.

Wireless radio units that include antenna systems having coaxial feed cables that are selectively connected to an RF ground plane

Systems and methods for RF hazard protection are provided. In one embodiment, a RF protection coupler comprises: a first port to couple to an output of an RF source circuit; a second port to couple to an external RF load; a source side and load side RF switches, wherein the source side RF switch and the load side RF switch are each switch between a first and second states in response to a detected matting. In the first state the source and load side RF switches establish an electrical path between the first and second ports. In the second state: the source side RF switch couples the first port to an impedance load that is impedance matched to the output of the RF source circuit; the load side RF switch couples the second port to an electrical ground; and a gap between the switches electrically isolates the ports.

Systems and methods for radio frequency hazard protection for external load connections

An access point includes a data encoder, a first transmit/receive chain coupled to the data encoder, the first transmit/receive chain including a first radio and a first antenna that are configured to transmit RF signals in a first frequency band, a second transmit/receive chain coupled to the data encoder, the second transmit/receive chain including a second radio and a second antenna that are configured to transmit RF signals in the first frequency band, and a switchable ground element that comprises a conductive member that is connected to a ground reference via a switch. The first antenna is separated from the second antenna by a distance that is less than one wavelength of a center frequency of the first operational frequency band.

Multi-input-multi-output access points having switchable ground elements for improved isolation and related methods

An electronic device that provides modified electrical signals is described. An interface circuit in the electronic device may provide electrical signals for an antenna module, which may be coupled to the interface circuit by a cable, and the electrical signals may correspond to or may specify an output transmit-power level at the interface circuit. Then, the interface circuit may receive feedback about an input transmit-power level at the antenna module. Based on the feedback, a data rate and/or a modulation and coding scheme, the interface circuit may provide the modified electrical signals for the antenna module, where the modified electrical signals correspond to a modified output transmit-power level at the interface circuit. In some embodiments, the feedback is provided by repurposing, during a different operating mode, signal lines that otherwise specify an antenna pattern.

Antenna-parameter control in a distributed system

A network device may include a plug that couples with a socket to couple the network device to a PLC network. A position of the plug may be interchanged when the plug is coupled with the socket. In one example, the network device may determine a coupling orientation of the plug that indicates the position of the plug with respect to the socket. The plug includes a first plug terminal, a second plug terminal, a first ground plug terminal, and a second ground plug terminal. The network device may select a signal polarity for the plug based, at least in part, on the coupling orientation. The signal polarity indicates over which of the plug terminals data is to be transmitted for communication over the PLC network.

Switching signal polarity of a network device plug for use in a powerline communication network

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San Jose, CA, United States of America

Anand Krishnamachari