Abstract: In an electronic apparatus, a processor executes a program stored in memory to perform essential functions. In the event of an error related to these functions, a self-test application is triggered. The processor may identify a relevant test routine from a set of routines, conduct tests on the function using the identified routine, and communicate the test results to a display. Accordingly, when an error occurs while the electronic apparatus is operating, the electronic apparatus can inform a user and a manufacturer of a cause of the error.

Abstract: The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transmission rate than a 4th generation (4G) communication system such as Long-Term Evolution (LTE). The present disclosure provides a device for variable signal attenuation equipped in a stack-up structure inside an RFIC. The device for signal attenuation comprises: a first transmission line positioned on a first layer inside the RFIC; a second transmission line positioned on a second layer, which is adjacent to the first layer, and electromagnetically coupled to the first transmission line; and a control unit. The first transmission line comprises an impedance control unit on one side. The control unit can variably control the impedance control unit.

Abstract: The disclosure relates to an RFIC apparatus, and more particularly, to an RFIC circuit having a test circuit, a test apparatus, and a test method thereof. Further, the disclosure relates to a method for estimating or determining a DC gain using a test apparatus and an RF circuit in a DC/AC test stage, and detecting defects of the RF circuit based on the estimated or determined DC gain.

Abstract: A 5th generation (5G) or pre-5G communication system for supporting a higher data rate than previous 4th generation (4G) communication systems is provided. A switching circuit in a wireless communication system is provided. The switching circuit includes a first coil, a second coil electrically coupled to the first coil, a first switch electrically connected to the second coil, a third coil electrically coupled to the first coil, a second switch electrically connected to the third coil, and a control unit configured to control the opening or closing of the first switch and the second switch. The control unit can be configured to close the first switch and open the second switch to form a first path using the first coil and the second coil, and open the first switch and close the second switch to form a second path using the first coil and the third coil.

Abstract: An apparatus is provided. The apparatus includes an electronic circuit for processing a differential signal. A device including an electronic circuit may include a first inductor and a second inductor that process a differential signal, a first circuit connected to the first inductor in parallel, a second circuit connected to the second inductor in parallel, and lines connecting the first inductor and the first circuit, the lines being disposed to pass through an area defined by the first inductor and the second inductor. The first inductor and the second inductor have symmetrical differential structures.

Abstract: Disclosed is a 5G or pre-5G communication system for supporting a data transmission rate higher than that of a 4G communication system such as LTE. The present invention relates to a technique for implementing, in a compact form, a four-way power divider and combiner for a phased array system. More particularly, according to one embodiment of the present invention, a power divider including one input port and four output ports comprises an input terminal inductor having one end connected to the input port and the other end connected to the ground, an inductor group including four output terminal inductors, and four connection units for connecting the input port and the inductor group, wherein four secondary inductors are respectively connected to the four connection units so that four nodes are formed between the four connection units and the inductor group, and the output ports are respectively disposed on the four connection units between the input port and the inductor group.

Abstract: The disclosure relates to an RFIC apparatus, and more particularly, to an RFIC circuit having a test circuit, a test apparatus, and a test method thereof. Further, the disclosure relates to a method for estimating or determining a DC gain using a test apparatus and an RF circuit in a DC/AC test stage, and detecting defects of the RF circuit based on the estimated or determined DC gain.

Abstract: A method and apparatus capable of adjusting a signal level in a wireless communication system are provided. An electronic device includes an oscillator configured to output a local oscillator (LO) signal, a mixer configured to convert a frequency band of a first signal based on the LO signal and output a third signal, and a feedback circuit configured to output a feedback signal for adjusting a magnitude of the LO signal, wherein the mixer is further configured to adjust a magnitude of LO signal based on the feedback signal.

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). An amplifier is provided. The amplifier includes a first resistor electrically connected to the input terminal, a second resistor electrically connected to the output terminal, a switch including a metal-oxide-semiconductor field-effect transistor (MOSFET) and electrically connected to one end of the second resistor, and a switch control processor configured to electrically connect the gate terminal of the MOSFET constituting the switch and the bulk terminal of the MOSFET constituting the switch to an impedance having an impedance value higher than a preset first threshold.

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). An amplifier is provided. The amplifier includes a first resistor electrically connected to the input terminal, a second resistor electrically connected to the output terminal, a switch including a metal-oxide-semiconductor field-effect transistor (MOSFET) and electrically connected to one end of the second resistor, and a switch control processor configured to electrically connect the gate terminal of the MOSFET constituting the switch and the bulk terminal of the MOSFET constituting the switch to an impedance having an impedance value higher than a preset first threshold.

Abstract: An apparatus including an electronic circuit. The apparatus includes a path unit configured to form a first impedance for controlling a gain of an input signal. The apparatus also includes a shunt unit configured to form a second impedance for performing attenuation between the path unit and a ground, wherein the path unit forms the first impedance using an on-resistance of at least one transistor.

Abstract: A communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT) are provided. The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. An amplifier includes a first transistor for amplifying the fundamental signal applied to a gate terminal, and a second transistor having a source terminal electrically connected to the drain terminal of the first transistor and a drain terminal electrically connected to a bias voltage. The current flowing through the second transistor may be determined based on the current flowing in the drain terminal of the first transistor.

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). An electronic device and an operation method thereof are provided for testing performance of a radio frequency integrated circuit (RFIC) in a wireless communication system. The method includes checking a connection state of elements operable as combiners and a plurality of RF chains of the RFIC; performing control to output RF signals from the plurality of RF chains; acquiring an integrated signal by combining the RF signals via the combiners; and determining a quality indicator for the RFIC based the integrated signal.

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). An amplifier is provided. The amplifier includes a first resistor electrically connected to the input terminal, a second resistor electrically connected to the output terminal, a switch including a metal-oxide-semiconductor field-effect transistor (MOSFET) and electrically connected to one end of the second resistor, and a switch control processor configured to electrically connect the gate terminal of the MOSFET constituting the switch and the bulk terminal of the MOSFET constituting the switch to an impedance having an impedance value higher than a preset first threshold.

Abstract: A communication technique for converging internet of everything (IoT) technology with a 5th generation (5G) communication system for supporting a higher data transfer rate beyond a 4G system is provided. The communication technique can be applied to intelligent services, based on 5G communication technology and IoT-related technology. In an embodiment, an electronic device includes a first processor configured to output a first signal for generating a first frequency signal, a second processor configured to output a second signal for generating a second frequency signal, a first radio frequency (RF) chip configured to output the first frequency signal, based on the first signal received from the first processor and a baseband signal, and a second RF chip configured to output the second frequency signal, based on the second signal received from the second processor and the first frequency signal outputted from the first RF chip.

Abstract: An apparatus is provided. The apparatus includes an electronic circuit for processing a differential signal. A device including an electronic circuit may include a first inductor and a second inductor that process a differential signal, a first circuit connected to the first inductor in parallel, a second circuit connected to the second inductor in parallel, and lines connecting the first inductor and the first circuit, the lines being disposed to pass through an area defined by the first inductor and the second inductor. The first inductor and the second inductor have symmetrical differential structures.

Abstract: An apparatus including an electronic circuit. The apparatus includes a path unit configured to form a first impedance for controlling a gain of an input signal. The apparatus also includes a shunt unit configured to form a second impedance for performing attenuation between the path unit and a ground, wherein the path unit forms the first impedance using an on-resistance of at least one transistor.

Abstract: A communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT) are provided. The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. An amplifier includes a first transistor for amplifying the fundamental signal applied to a gate terminal. and a second transistor having a source terminal electrically connected to the drain terminal of the first transistor and a drain terminal electrically connected to a bias voltage. The current flowing through the second transistor may be determined based on the current flowing in the drain terminal of the first transistor.

Abstract: A method and apparatus capable of adjusting a signal level in a wireless communication system are provided. An electronic device includes an oscillator configured to output a local oscillator (LO) signal, a mixer configured to convert a frequency band of a first signal based on the LO signal and output a third signal, and a feedback circuit configured to output a feedback signal for adjusting a magnitude of the LO signal, wherein the mixer is further configured to adjust a magnitude of LO signal based on the feedback signal.

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). An electronic device and an operation method thereof are provided for testing performance of a radio frequency integrated circuit (RFIC) in a wireless communication system. The method includes checking a connection state of elements operable as combiners and a plurality of RF chains of the RFIC; performing control to output RF signals from the plurality of RF chains; acquiring an integrated signal by combining the RF signals via the combiners; and determining a quality indicator for the RFIC based the integrated signal.