Abstract:
Disclosed is an electronic device including a battery; an interface that receives an external power; a system circuit including a processor; and a power management circuit, wherein the power management circuit is configured to detect an input of the external power through the interface; identify a voltage of the battery in response to the detection of the input of the external power; when the voltage of the battery belongs to a first designated voltage range, avoid charging the battery using the input external power and supply the input external power to the system circuit; and when the voltage of the battery belongs to a second designated voltage range, charge the battery using at least some of the input external power.
Abstract:
Various embodiments relating to an electronic device and a method based on a battery leakage state have been described. According to an example embodiment, an electronic device includes a display; a communication circuit; a battery; a current sensor configured to measure a charge current used for charging the battery; and a processor, wherein the processor may be configured to measure a charge current using the current sensor, to determine a leakage state of the battery based on at least a part of the charge current, and to provide a notification corresponding to the leakage state through the display and/or perform a specified function corresponding to the leakage state based on at least a part of the leakage state.
Abstract:
Disclosed is a power divider circuit providing a mutual inductance and including a first primary inducing element having a first terminal connected with a first output port and a second terminal connected with a second primary inducing element having a first terminal connected with a second output port and a second terminal connected with the first primary inducing element and magnetically and mutually coupled with the first primary inducing element, a sub inducing element having a first terminal connected with an input port and a second terminal connected with the second terminal of the first primary inducing element and the second terminal of the second primary inducing element, and an isolation network connected between the first output port and the second output port. The sub inducing element is magnetically and mutually coupled with each of the first primary inducing element and the second primary inducing element.
Abstract:
An apparatus and a method for phase calibration in an radio frequency (RF) module that constitutes a wireless communication device are provided. The apparatus and method include a test signal is emitted by a forward transmission antenna array of a first antenna array, and the emitted test signal, which is transferred by a member that covers the first and second antenna arrays, is received through a forward reception antenna array of the second antenna array. On the basis of the received test signal, a phase value is calibrated with regard to each of chain combinations formed by the first and second antenna arrays. Forward chain combinations that constitute the chain combination may be determined by a combination of forward transmission chains, which correspond to respective transmission antennas that constitute the forward transmission antenna array, and forward reception chains, which correspond to respective reception antennas that constitute the forward reception antenna array.
Abstract:
A method of allowing a local Driving Assistance Service (DAS) center within a base station to provide a DAS to a vehicle by using a communication network is provided. The method includes receiving, from a vehicle terminal, local DAS information and surrounding information of the vehicle, generating Analyzed-local (A-local) DAS information by using the received local DAS information, and transmitting, when the DAS is provided by using the generated A-local DAS information, the A-local DAS information to the vehicle terminal.