Circuits, devices, and methods related to setting a drive power of a power amplifier to a first power level, switching an input of the power amplifier to an isolation state, switching an antenna selection state of an antenna network, and switching the input of the power amplifier to an active state.

Circuits, devices, and methods related to setting a drive power of a power amplifier to a first power level, switching an input of the power amplifier to an isolation state, switching an antenna selection state of an antenna network, and switching the input of the power amplifier to an active state.

An electronic device is provided. The electronic device includes a housing including a first surface, a second surface disposed facing an opposite side of the first surface, and a side surface configured to surround at least a portion of a space between the first surface and the second surface, a first elongated metal member configured to form a first portion of the side surface and including a first end and a second end, at least one communication circuit electrically connected to a first point of the first elongated metal member through a capacitive element, at least one ground member disposed in an interior of the housing, and a first conductive member configured to electrically connect a second point of the first elongated metal member to the ground member. The second point of the first elongated metal member is disposed closer to the second end than to the first point.

An apparatus is provided that includes a set of antenna elements and switching nodes. Each switching node has physical interconnects to a sub-set of the antenna elements for transferring communication signals and the switching nodes have physical interconnects to other switching nodes forming a network of switching nodes for transferring communication signals between switching nodes. The apparatus also includes a controller for controlling operation of switching nodes to control use of the physical interconnects between switching nodes and control creation of different patterns of antenna elements operationally interconnected via multiple operationally interconnected switching nodes.

An apparatus is provided that includes a set of antenna elements and switching nodes. Each switching node has physical interconnects to a sub-set of the antenna elements for transferring communication signals and the switching nodes have physical interconnects to other switching nodes forming a network of switching nodes for transferring communication signals between switching nodes. The apparatus also includes a controller for controlling operation of switching nodes to control use of the physical interconnects between switching nodes and control creation of different patterns of antenna elements operationally interconnected via multiple operationally interconnected switching nodes.

In described examples, an integrated circuit includes an on-off keying (OOK) digital isolator, which includes a first circuitry, a multiplexer, an OOK modulator, an isolation barrier, an OOK envelope detector, and a second circuitry. The first circuitry generates and outputs a calibration signal. The multiplexer has a data signal input, and an input coupled to a first circuitry output. An OOK modulator input is coupled to a multiplexer output. An isolation barrier input is coupled to an OOK modulator output. An OOK envelope detector input is coupled to an isolation barrier output. The second circuitry includes an input coupled to an OOK envelope detector output, and an output coupled to an OOK envelope detector control input. The second circuitry detects a duty cycle distortion (DCD) of the OOK envelope detector output, and outputs a control signal to change the OOK envelope detector output's duty cycle based on the detected DCD.

In described examples, an integrated circuit includes an on-off keying (OOK) digital isolator, which includes a first circuitry, a multiplexer, an OOK modulator, an isolation barrier, an OOK envelope detector, and a second circuitry. The first circuitry generates and outputs a calibration signal. The multiplexer has a data signal input, and an input coupled to a first circuitry output. An OOK modulator input is coupled to a multiplexer output. An isolation barrier input is coupled to an OOK modulator output. An OOK envelope detector input is coupled to an isolation barrier output. The second circuitry includes an input coupled to an OOK envelope detector output, and an output coupled to an OOK envelope detector control input. The second circuitry detects a duty cycle distortion (DCD) of the OOK envelope detector output, and outputs a control signal to change the OOK envelope detector output's duty cycle based on the detected DCD.

A communication circuit includes: a first radio frequency (RF) chain configured to output and/or receive a signal of a first frequency band through an antenna port; a second RF chain configured to output and/or receive a signal of a second frequency band through the antenna port; and a switch comprising a first terminal electrically connected to the first RF chain, a second terminal electrically connected to the second RF chain, and a third terminal electrically connected to a ground. The switch is configured to operate in a first operation mode or a second operation mode. In the first operation mode, the first terminal is electrically connected to the second terminal. In the second operation mode, the first terminal is electrically connected to the third terminal.

Disclosed are one or more preferred geometric configurations for a device communicably coupled to a power transmission line and capable of launching transverse electromagnetic waves onto the transmission line. The waves propagate data received from a data source and may include a reflector and a coupler adjacent to each other through a transverse magnetic wave that propagates longitudinally along the surface of the transmission line.

Disclosed are one or more preferred geometric configurations for a device communicably coupled to a power transmission line and capable of launching transverse electromagnetic waves onto the transmission line. The waves propagate data received from a data source and may include a reflector and a coupler adjacent to each other through a transverse magnetic wave that propagates longitudinally along the surface of the transmission line.