Abstract: Provided are a low noise amplifier and a receiver. The low noise amplifier comprises at least one input port configured to receive an input signal including a carrier, first to third output ports connected to first to third load circuits, respectively, and configured to transmit an output signal, a first amplifier stage comprising a first type gain stage connected to the input port and first to third first type drive stages connected to the first to third output ports, respectively and second to third amplifier stages, each comprising a second type gain stage and a second type drive stage, wherein the low noise amplifier is configured to vary an impedance of an input transistor included in each of the first type gain stage and the second type gain stage, so that an input impedance is uniform even when operating in a plurality of operation modes.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The disclosure provides a method and a device for controlling transmission power of an uplink signal in consideration of multiple transmission points/panels/beams by a terminal for cooperative communication between the multiple transmission points/panels/beams.

Abstract: An envelope tracking (ET) power amplifier apparatus is provided. The multi-mode power amplifier apparatus includes a pair of power amplifiers configured to amplify a radio frequency (RF) signal(s) and an output circuit that outputs the amplified RF signal(s) to a signal output(s). In examples disclosed herein, a control circuit can cause the multi-mode power amplifier apparatus to operate in different power management modes by changing a load impedance coupled to the signal output(s). In a non-limiting example, the control circuit can change a power management mode of the multi-mode power amplifier apparatus based on modulation bandwidth of the RF signal(s). As a result, the multi-mode power amplifier apparatus can operate across a wide range of modulation bandwidth without compromising efficiency and performance.

Abstract: Methods and devices addressing design of wideband LNAs with gain modes are disclosed. The disclosed teachings can be used to reconfigure RF receiver front-end to operate in various applications imposing stringent and conflicting requirements. Wideband and narrowband input and output matching with gain modes using a combination of the same hardware and a switching network are also disclosed. The described methods and devices also address carrier aggregation requirements and provide solutions that can be used both in single-mode and split-mode operations.

Abstract: An exterior cover of an electronic device is provided. the exterior cover includes a cover portion including a front surface facing in a first direction, a rear surface facing in a second direction opposite to the first direction, and a recess formed on the rear surface; and a support member having a shape corresponding to the recess and including a magnetic material accommodated therein to be detachably provided on the rear surface of the cover portion. The cover portion includes at least one metallic member disposed inside thereof, and the at least one metallic member at least partially overlaps the recess.

Abstract: Techniques for providing low-cost and effective jammer rejection for an amplifier is disclosed. The amplifier includes an input node and an output node, a first transistor and a second transistor, a load circuitry, an inductor, and a capacitor. A first terminal of the first transistor is coupled to a ground. A second terminal of the first transistor is coupled to a first terminal of the second transistor. A second terminal of the second transistor is coupled to the output node. The load circuitry is coupled between a power supply and the second terminal of the second transistor. A first terminal of the inductor is coupled to the ground through a first switch. A first terminal of the capacitor is coupled to the first terminal of the second transistor and a second terminal of the capacitor is coupled to a second terminal of the inductor.

Abstract: Power amplifiers with adaptive bias for envelope tracking applications are provided herein. In certain embodiments, an envelope tracking system includes a power amplifier that amplifies a radio frequency (RF) signal and that receives power from a power amplifier supply voltage, and an envelope tracker that controls a voltage level of the power amplifier supply voltage based on an envelope of the RF signal. The power amplifier includes a current mirror having an input that receives a reference current, an output electrically connected to the power amplifier supply voltage, and a node that outputs a gate bias voltage. The power amplifier further includes a field-effect transistor that amplifies the radio frequency signal and a first depletion-mode transistor having a gate connected to the node of the current mirror and a source connected to a gate of the field-effect transistor.

Abstract: Antenna arrays with multiple feeds and varying pitch are disclosed. In certain embodiments, a radio frequency (RF) module includes a module substrate, a semiconductor die attached to the module substrate, and an antenna array attached to the module substrate. The semiconductor die includes a plurality of power amplifiers configured to amplify a corresponding plurality of RF signals to generate a plurality of amplified RF signals. The antenna array is configured to receive the plurality of amplified RF signals from the plurality of power amplifiers, and includes a plurality of antenna elements arranged with a varying pitch. Each of the plurality of antenna elements includes two or more signal feeds.

Abstract: A radio-frequency module includes a mounting substrate, a first power amplifier, a second power amplifier, a circuit component (IC chip), and an external connection terminal. The mounting substrate has a first main surface and a second main surface on opposite sides of the mounting substrate. The first power amplifier is mounted on the first main surface of the mounting substrate. The second power amplifier is mounted on the first main surface of the mounting substrate. The circuit component is mounted on the second main surface of the mounting substrate. The external connection terminal is disposed on the second main surface of the mounting substrate. The external connection terminal is connected to a power supply that supplies a power supply voltage to the first power amplifier and the second power amplifier.

Abstract: An air interface plane (AIP) of a radio frequency (RF) aperture includes: a circuit board having a first side and a second side opposite the first side; and a matrix of tapered elements arranged on the first side of the circuit board and secured to the circuit board, the matrix of tapered elements cooperating to at least one of receive or transmit an over-the-air RF signal. Suitably, each tapered element of the matrix has: a central hub extending along a longitudinal axis from a hub base which is proximate to the first side of the circuit board to an apex of the tapered element which is distal from the first side of the first circuit board; and a plurality of arms extending from the central hub at the apex of the tapered element, each of the plurality of arms including a first portion that projects the arm radially away from the longitudinal axis and a second portion that projects the arm longitudinally toward the first side of the circuit board.

Abstract: A method of forming an integrated microstrip circulator includes translating a ferrite disc into an aperture in a dielectric substrate, securing the ferrite disc in the dielectric substrate with an adhesive to form a composite structure, and forming circuitry on an upper surface of the composite structure and forming surface mount contacts on a lower surface of the composite structure by metallizing the upper and lower surfaces of the composite structure.

Abstract: The present disclosure provides communication methods and apparatuses, a power transmitting device, a power receiving device, and computer readable storage mediums. The communication method includes: transmitting a broadcast signal when detecting a load change of the PTX, where the broadcast signal carries a communication mode supported by the PTX and a current load state; charging a first PRX after a handshake communication with the first PRX; receiving a communication state reported by the first PRX according to the broadcast signal; and communicating with the first PRX according to the communication state. In examples of the present disclosure, by transmitting a broadcast signal after detecting a load change, receiving a communication state reported by the first PRX according to the broadcast signal, and communicating with the first PRX according to the communication state, the PTX may communicate with the PRX without affecting the charging efficiency.

Abstract: An electronic device is provided, which includes a housing, a display, and a sensor panel that is disposed between the display and the housing and that senses input information of a stylus pen, in which the sensor panel includes a first sensor panel including an opening area and a second sensor panel disposed to cover at least part of the opening area and electrically connected with the first sensor panel, and the second sensor panel includes a first circuit board including a first sub-board and a second sub-board, at least part of the first sub-board and at least part of the second sub-board being spaced apart from each other to form a receiving space and a second circuit board, at least part of which being accommodated in the receiving space and surrounded by the first circuit board.

Abstract: A system is presented for tracking user devices in a facility. Wireless signals and user information are communicated from user devices to a wireless device and a queue management server. The system determines location information for the user devices within a defined space at points in time. The system tracks the movement of the user devices within the defined space over a period based upon the location information. The system determines when user devices are within a threshold distance of corresponding resource devices based upon the determined location information. The system communicates user preference and profile information to the resource devices indicating that the user devices are within a threshold distance of the resource devices. The resource devices display customized information for user devices based upon user preference and profile information.

Abstract: A computer comprises a processor and a memory. The memory stores instructions executable by the processor to input a frequency spectrum distribution to a machine learning program to obtain carrier data as output from the machine learning program satellite communication. The machine learning program is trained with a plurality of frequency spectrum distributions of a wireless satellite communication signal and metadata specifying one or more satellite communication carriers for respective ones of the frequency spectrum distributions, wherein the metadata for each satellite communication carrier includes a respective center frequency and a respective symbol rate.

Abstract: The present invention provides a design method of a high energy efficiency Unmanned Aerial Vehicle (UAV) communication system assisted by an intelligent reflecting surface, and belongs to the technical field of UAV communication network energy efficiency optimization. A communication process comprises two transmission links, one link is directly sent from an information source to an information sink, and the other link is reflected and transmitted by an intelligent reflecting surface attached to a UAV. The two links exist simultaneously. Based on an idea of block iteration, an original problem is decomposed into three sub-problems, and a non-convex optimization problem is transformed into solvable concave-convex fractional program problems by a continuous convex approximation technique. The present invention provides a design method for joint optimization of a passive beamforming of the intelligent reflecting surface, an active beamforming of a base station and a flight trajectory of the UAV.

Abstract: A power control method and apparatus, a computer device, and a storage medium are provided. A UE receives SUL carrier information sent by an NR normal base station. Power control information is obtained according to the SUL carrier information. An uplink transmission power of the UE is adjusted according to the power control information. The SUL carrier information is used to indicate that an SUL band and an NR normal band are deployed in different station sites and whether there is a target band deployed in a co-station with the SUL band. A spectrum interval between the target band and the SUL band is less than or equal to a preset threshold value. When the SUL band and the NR normal band are deployed in different station sites, the UE may determine the power control information through the SUL carrier information, thereby adjusting an uplink power control of the UE.

Abstract: Embodiments provide a method for transmitting data between a user terminal and another apparatus. The method has a step of generating a signal for driving an electromagnetic functional unit, the electromagnetic functional unit being an actuator of a loudspeaker of the user terminal or the electromagnetic functional unit being an electromagnetic oscillating circuit connected to the user terminal. Additionally, the method has a step of driving the electromagnetic functional unit by the generated signal to produce, by the electromagnetic functional unit, a magnetic signal which carries first data to be transmitted from the user terminal to the other apparatus. Additionally, the method has a step of detecting another signal output by the other apparatus, the other signal carrying second data to be transmitted from the other apparatus to the user terminal. Thus, the magnetic signal and the other signal differ in the physical signal type.

Abstract: Apparatus and methods for power amplifier power management are disclosed. In certain embodiments, a mobile device includes a transceiver that generates a radio frequency signal, a front-end system including a first power amplifier module that amplifies the radio frequency signal, and a power management system including an envelope tracking power management unit that provides an envelope tracking supply voltage to the first power amplifier module, and a first average power tracking power management unit that provides an average power tracking supply voltage to the first power amplifier module. The first power amplifier module is configured to selectively switch between the envelope tracking supply voltage and the average power tracking supply voltage.

Abstract: Managing use of dynamic power sharing for dual carrier operation is provided. A power head room report is received (902) from the master cell group. An allowed tolerance is identified (904) from the received power head room report, which includes a maximum expected possible deviation between a power level at which the user equipment requests that a communication be set and an actual power level at which the corresponding communication is transmitted. A lower bound of a maximum configured power of the secondary cell group is determined (906), which enables the user equipment to meet emission requirements during the dual carrier operation, as well as the total power constraints, while accounting for the allowed tolerance identified. The lower bound of the maximum configured power for the carrier of the secondary cell group is set (908) at the determined level.