A controller area network including one or more first network nodes biased from a first power supply voltage, and a second network node biased from a second, lower, power supply voltage. The second network node includes a transmitter driving a differential voltage onto bus lines to communicate a dominant bus state at a second dominant state common mode voltage, a receiver coupled to the bus lines, sense circuitry to sense a common mode voltage at the bus lines, and control circuitry to control a recessive state common mode voltage in response to the sensed dominant state common mode voltage.

A simultaneous transmit and receive (STAR) system comprises a plurality of radiating elements and a plurality of antenna transmit/receive (T/R) elements. The plurality of antenna T/R elements are each in operable communication with a respective radiating element. Each T/R element comprises a transmit channel, a receive channel, a switch, and a directional coupler. The directional coupler comprises an RF input in operable communication with an antenna array receiving signals, an RF output coupling the received signals to an input of the receive channel, and a coupled input operably coupled to the switch. If the switch is set to a predetermined state, the respective transmit channel couples an active cancellation signal to the coupled input of the directional coupler to cancel at least some coupling effects arising on an input to the receive channel, arising from operation of at least some of the T/R elements in the array.

A simultaneous transmit and receive (STAR) system comprises a plurality of radiating elements and a plurality of antenna transmit/receive (T/R) elements. The plurality of antenna T/R elements are each in operable communication with a respective radiating element. Each T/R element comprises a transmit channel, a receive channel, a switch, and a directional coupler. The directional coupler comprises an RF input in operable communication with an antenna array receiving signals, an RF output coupling the received signals to an input of the receive channel, and a coupled input operably coupled to the switch. If the switch is set to a predetermined state, the respective transmit channel couples an active cancellation signal to the coupled input of the directional coupler to cancel at least some coupling effects arising on an input to the receive channel, arising from operation of at least some of the T/R elements in the array.

Systems, methods, and apparatuses, including electronic devices and computer-readable storage media, for adaptively switching wireless connections between antennas of a wearable electronic device and a host electronic device. One device includes a wearable electronic device with a first and second housing, each housing including two or more antennas. The wearable electronic device is configured to establish and monitor a wireless cross-link between two antennas in different housings, or between antennas in one housing and antennas of a host electronic device. The wearable electronic device can monitor the integrity of the wireless cross-link, and establish an updated cross-link in response to the wireless cross-link not meeting a predetermined integrity threshold. The wearable electronic device can monitor a wireless cross-head link between housings of a wearable electronic device at the same time as a wireless cross-body link between the wearable electronic device and the host electronic device.

Systems, methods, and apparatuses, including electronic devices and computer-readable storage media, for adaptively switching wireless connections between antennas of a wearable electronic device and a host electronic device. One device includes a wearable electronic device with a first and second housing, each housing including two or more antennas. The wearable electronic device is configured to establish and monitor a wireless cross-link between two antennas in different housings, or between antennas in one housing and antennas of a host electronic device. The wearable electronic device can monitor the integrity of the wireless cross-link, and establish an updated cross-link in response to the wireless cross-link not meeting a predetermined integrity threshold. The wearable electronic device can monitor a wireless cross-head link between housings of a wearable electronic device at the same time as a wireless cross-body link between the wearable electronic device and the host electronic device.

Various embodiments disclosed herein enable steerable, time division duplex (“TDD”) communications channels at millimeter-wave frequency bands. Among other things, embodiments disclosed herein provide improved steering accuracy and power distribution, lower power consumption, and potentially longer service life than previous transceiver systems.

Disclosed is an electronic device and control method for changing an antenna setting according to a bandwidth of a signal. An electronic device according to various embodiments of the present document may comprise at least one antenna, an antenna tuning circuit, and a processor, wherein the processor is configured to: receive signals from a plurality of external devices according to a first antenna setting by using the at least one antenna, respectively; check received power intensities of the received signals, respectively; when the checked received power intensities are equal to or greater than a predesignated threshold intensity, identify a ratio of a signal having a maximum bandwidth from among the signals received from the plurality of external devices; and at least partially on the basis of the identified ratio, change the first antenna setting to a second antenna setting by using the antenna tuning circuit.

Disclosed is an electronic device and control method for changing an antenna setting according to a bandwidth of a signal. An electronic device according to various embodiments of the present document may comprise at least one antenna, an antenna tuning circuit, and a processor, wherein the processor is configured to: receive signals from a plurality of external devices according to a first antenna setting by using the at least one antenna, respectively; check received power intensities of the received signals, respectively; when the checked received power intensities are equal to or greater than a predesignated threshold intensity, identify a ratio of a signal having a maximum bandwidth from among the signals received from the plurality of external devices; and at least partially on the basis of the identified ratio, change the first antenna setting to a second antenna setting by using the antenna tuning circuit.

Isolation between the first path and second path is increased. A radio frequency module includes a first inductor, a second inductor, a third inductor, and a switch. The first inductor is provided in a first path through which a first communication signal travels. The second inductor is provided in a second path through which a second communication signal travels, the second path being used simultaneously with the first path. The third inductor is provided in a third path through which a third communication signal travels, the third path not being used simultaneously with the first path. The switch is provided between ground and a node in the third path and is connected to the third inductor. The third inductor is arranged between the first inductor and the second inductor.

Isolation between the first path and second path is increased. A radio frequency module includes a first inductor, a second inductor, a third inductor, and a switch. The first inductor is provided in a first path through which a first communication signal travels. The second inductor is provided in a second path through which a second communication signal travels, the second path being used simultaneously with the first path. The third inductor is provided in a third path through which a third communication signal travels, the third path not being used simultaneously with the first path. The switch is provided between ground and a node in the third path and is connected to the third inductor. The third inductor is arranged between the first inductor and the second inductor.