Huawei Technologies Co., Limited

Xiangen Xu

Shiyong Fu

Donghui Wang

Yan Zhuang

Xueqi Chen

Yu Ding

Qi Dong

Houcun Zhu

Zhaojin Li

A filtering-based power supply apparatus used in a power sourcing equipment (PSE) includes a power supply control circuit and an adaptive filter circuit. The power supply control circuit includes a power supply channel and a detection module. The power supply channel includes a control switch configured to control on and off of the power supply channel. The detection module is configured to send a detection signal to the power supply channel to detect whether a peer device connected to the power supply channel is a valid powered device. The control switch is turned off in a detection process of the power supply channel. The adaptive filter circuit is configured to filter noise in the detection signal in the detection process of the power supply channel.

Filtering-based power supply apparatus, power sourcing equipment, and power supply system

Power sourcing equipment for power over Ethernet (PoE) includes a power supply control circuit, an Ethernet port, and a surge protection circuit. The surge protection circuit includes a first circuit, a second circuit, and a common discharge circuit. The first circuit is connected to a power supply pin group of the Ethernet port, the power supply control circuit, and the common discharge circuit. The second circuit is connected to a non-power supply pin group of the Ethernet port and the common discharge circuit. The first circuit transmits, to the common discharge circuit, a first surge that is input from the power supply pin group. The second circuit transmits, to the common discharge circuit, a second surge that is input from the non-power supply pin group. The common discharge circuit discharges the first surge and the second surge to ground.

Power sourcing equipment and power over ethernet system

The present invention provides a radio frequency front-end module, and a radio access network device and a control method thereof. The radio frequency front-end module includes a phase-shifting and attenuating unit, a radio frequency unit, and an antenna, where the radio frequency unit is respectively connected to the phase-shifting and attenuating unit and the antenna; the phase-shifting and attenuating unit is configured to receive a control signal and a radio frequency signal sent by a radio access network device and perform phase-shifting processing, or attenuating processing, or phase-shifting and attenuating processing on the radio frequency signal according to the control signal. The technical solution according to the embodiments of the present invention can be used to implement an operation mode of an intelligent antenna having multiple antennas cooperating with each other.

Radio frequency front-end module, and radio access network device and control method

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Nanjing, China

Xiangen Xu