Abstract: Portable communication devices and related methods for use in supporting voice and/or data communication are provided. One example portable communication device includes a housing, an interface connector disposed at the housing. The interface connector is configured to couple to an accessory module configured to provide at least one accessory function. The example portable communication device also includes a processor disposed at least partially within the housing. The processor is coupled to the interface connector and is configured to determine whether a coupled accessory module is an approved module for use with the portable communication device, based on an identity of the accessory module, and if the accessory module is an approved module, enable power at the interface connector such that communication between the portable communication device and the accessory module is permitted.

Abstract: Described herein are techniques related one or more systems, apparatuses, methods, etc. for reducing induced currents in a apparatus chassis. For example, a fractal slot is constructed in the apparatus chassis to reduce the induced currents, and enhance passage of magnetic fields through the apparatus chassis. In this example, the fractal slot may include a no-self loop fractal space filling curve shape to provide high impedance to the induced currents.

Abstract: A multi-mixer system comprising a plurality of mixers and a filter module is provided. Each of the mixers is selectively enabled to mix an input signal with a corresponding oscillation signal to generate an output signal at an output node; and the filter module provides different frequency responses for the output signals from at least two of the output nodes of the mixers, wherein the at least two of the output nodes of the mixers are connected to different internal nodes of the filter module.

Abstract: The disclosure provides a circuit. The circuit includes a gain stage block. The gain stage block is coupled to an input voltage through a first switch. A first capacitor is coupled between the first switch and a ground terminal. A second capacitor is coupled between the first switch and a second switch. A third switch is coupled between the second capacitor and a fixed terminal of the gain stage block.

Abstract: Embodiments relate to a computer system and computer program product for allocating resources and settings in order to optimize application satisfaction in view of hardware resources and adjustable software configurations. As applications are executed on a computing device, usage data is tracked, adjustable settings are identified, and power consumption of each application under different settings is measured. The usage data is then compiled, an optimal configuration setting is assessed for each application, and the setting is conveyed and applied to one or more applications.

Abstract: A passively re-radiating cell phone sleeve assembly capable of receiving a nested cell phone provides signal boosting capabilities. Signal boosting is enabled by use of an additional antenna, a pass-through repeater, dual antenna isolation capability and other features.

Abstract: A smart laser phone includes a main body with a mobile communication module, a band connected to the main body, an optical member, on a side surface of the main body to which the band is not connected, for projecting a laser image, a speaker on the same side surface as the optical member but separated by a set distance therefrom, a sensor unit on the surface between the optical member and the speaker, and a microphone on the outer side of the optical member. When the smart laser phone is worn on the wrist, the microphone and the optical member, the sensor unit and the speaker are sequentially equipped on the side surface of the smart laser phone main body oriented toward the palm, and thus, as the phone is used with an enlarged image, using the phone is convenient, and communication can be carried out with clear sound.

Abstract: Embodiments of the present disclosure provide a base station and a beam coverage method, which can improve a service capacity of a communications system. The base station includes: an antenna and at least two data transmission paths, where a data converter and a beamformer are disposed on each data transmission path; the antenna includes a beam aggregation structure and at least one antenna bay, the beam aggregation structure includes at least one antenna aperture, one beamformer is correspondingly connected to one antenna bay, one antenna bay uses at least one antenna aperture in the beam aggregation structure to receive and send a beam, and a multiplexer is further disposed on the at least two data transmission paths; and the multiplexer is configured to set a data transmission path of a to-be-transmitted signal or a radiation signal. The embodiments of the present disclosure are used for beam coverage.

Abstract: A signal processing method and apparatus are disclosed. The signal processing method includes: receiving, by a first signal processing apparatus, a mixed signal; acquiring, by the first signal processing apparatus, an energy strength ratio of the mixed signal, where the energy strength ratio includes a ratio of energy strength of a signal sent by a first signal source and received by the first signal processing apparatus to energy strength of a signal sent by a second signal source and received by the first signal processing apparatus; and if the energy strength ratio is less than a first preset threshold, using, by the first signal processing apparatus, the signal sent by the second signal source in the mixed signal as an interference signal and separating the interference signal, and determining that a mixed signal obtained after the separation processing is the desired signal sent by the first signal source.

Abstract: According to one embodiment, a wireless communication device includes a receiver configured to receive signals via a plurality of antennas and processing circuitry configured to segment each of signals received by a plurality of antennas into a plurality of elements each defined by a time width and a bandwidth, and measure signal intensities of the elements or groups into which the plurality of elements are divided; select one of the plurality of antennas per element or per group by comparing the signal intensities between the plurality of antennas; and analyze a distribution of the selected antennas to determine an identity of a signal source of the signals.

Abstract: Tunable filters, cancellers, and duplexers based on passive mixers. A tunable delay cell includes passive mixers electrically coupled together for receiving an input signal and outputting a delayed signal, each passive mixer comprising a plurality of mixer switches. The tunable delay includes a control circuit for providing, to each passive mixer, a respective plurality of local oscillator (LO) signals, one to each mixer switch of each passive mixer. The control circuit is configured to vary the LO signals to cause a target frequency band of the input signal to be delayed by a target delay time in propagating through the passive mixers.

Abstract: An apparatus and method for controlling wireless transmission. The apparatus, which controls a transmitter that provides an output signal by upconverting and amplifying an input signal, includes a memory configured to store first calibration data representing a saturation power and a linear gain of a reference transmitter as functions of operating conditions of the reference transmitter. A controller may be configured to estimate a saturation power and a linear gain of the transmitter of the apparatus based on operating conditions of the transmitter and the first calibration data. The controller may generate at least one control signal for controlling an operation of the transmitter based on a saturation power difference between the estimated saturation power and a target saturation power and a linear gain difference between the estimated linear gain and a target linear gain.

Abstract: A mobile phone proofed against water, dust, and physical shocks (tri-proofed) has a structure comprising a first casing, a second casing, and a third casing. The first casing is provided with protrusions, and the third casing is provided with convex blocks. The second casing is provided with a first groove for a protrusion, and is provided with a second groove for a convex block. The protrusions and the convex blocks are both interference fits in the grooves. Moreover, the second casing also includes cosmetic surfaces. The first casing and the third casing have outer surfaces and each cosmetic surface protrudes out of the outer surfaces. The cosmetic surfaces are in first contact when the mobile phone is dropped. Waterproofing, dustproofing, and shockproofing are simultaneously achieved with the single second casing structure.

Abstract: A variable filter circuit includes a serial arm connected between ports (P1-P2), a parallel arm having a resonator connected in series between ports (P1-P3), and another parallel arm having another resonator connected in series between ports (P2-P3). The serial arm includes a capacitor connected between the ports (P1-P2), and the parallel arms include variable capacitances connected in series to the resonators.

Abstract: An electronic device may include a dielectric substrate, an electronic circuit supported by the substrate, for processing data, and a communication unit having an antenna. The communication unit may be mounted to the substrate in communication with the electronic circuit for converting between a first EHF electromagnetic signal containing digital information and a data signal conducted by the electronic circuit. The electromagnetic signal may be transmitted or received along a signal path by the antenna. An electromagnetic signal guide assembly may include a dielectric element made of a dielectric material disposed proximate the antenna in the signal path. The electromagnetic signal guide may have sides extending along the signal path. A sleeve element may extend around the dielectric element along sides of the dielectric element. The sleeve element may impede transmission of the electromagnetic signal through the sides of the dielectric element.

Abstract: A variable filter circuit includes a serial arm connected between ports (P1-P2), a parallel arm having a resonator connected in series between ports (P1-P3), and another parallel arm having another resonator connected in series between ports (P2-P3). The serial arm includes an inductor connected between the ports (P1-P2), and the parallel arms include variable capacitances connected in series to the resonators.

Abstract: Provided is a remote broadcast system including an audio amplifier activation device configured to turn on when a level of input sound via a smartphone mobile unit exceeds a threshold, a power source for an audio amplifier configured to amplify a signal of the input sound into a broadcast audio signal, and output the broadcast audio signal to a broadcast loudspeaker, the audio amplifier activation device being configured also to turnoff the power source for the audio amplifier when the level of the input sound remains lower than the threshold for a predetermined time period. A broadcaster carrying a smartphone base unit can select a smartphone mobile station via the smartphone base unit, and establish a communication link between the smartphone base unit and the smartphone mobile station. With this, the broadcaster is allowed to broadcast evacuation guidance information even while evacuating.

Abstract: Embodiments of the present invention disclose a pre-distortion system, including a pre-distortion circuit, a transmission circuit, a power amplifier, a feedback circuit, and a learning circuit. The pre-distortion circuit acquires an in-band intermodulation distortion model coefficient vector, a cross-band modulation distortion model coefficient vector, and an out-of-band intermodulation distortion model coefficient vector that are learned by the learning circuit according to an output signal of the power amplifier, and performs pre-distortion processing on an input digital intermediate frequency signal. Correspondingly, the embodiments of the present invention further disclose a pre-distortion method, which can eliminate impact caused by out-of-band intermodulation distortion on the power amplifier.

Abstract: A transceiver in a wireless device supporting carrier aggregation may include a correction module to generate a correction signal to attenuate intermodulation distortion associated with a first transmitted communication signal. In one embodiment, the correction signal may be added to the first transmitted communication signal (a victim signal) to reduce the intermodulation distortion caused by a second transmitted communication signal (an aggressor signal). The correction signal may be generated based on the aggressor signal. In another embodiment, the correction signal may equalize or pre-distort the first transmitted communication signal.

Abstract: A radio frequency receiver comprises a plurality of parallel receiving paths, wherein each path can receive a radio frequency signal in one of a plurality of radio frequency bands and amplify the received signal in a low noise amplifier. The amplified signals from the plurality of parallel paths are combined to one combined radio frequency signal in a common summation node and down-converted to a lower frequency signal in a mixer circuit. Each low noise amplifier comprises a low noise transconductance circuit providing a current signal to drive the common summation node, and an automatic gain control circuit in each path compensates for variations in signal strength independently of signal strengths of signals received by the other receiving paths. The receiver is suitable for simultaneous multiple band reception, where received signal strength can vary between the frequency bands.