Abstract: Front end systems with switched termination for enhanced intermodulation distortion performance are provided herein. The switched termination can be used on transmit paths and/or receive paths of the front end system to suppress impedance variation when the signal paths are inactive. For example, with respect to switched termination for transmit paths, a front end system can include a frequency multiplexing circuit connected to a band switch by a first radio frequency (RF) signal path and by a second RF signal path. The band switch selectively provides the frequency multiplexing circuit with a first transmit signal over the first RF signal path and with a second transmit signal over the second RF signal path. The front end system further includes a switched termination circuit in shunt with the first RF signal path and operable to turn on to suppress impedance variation when the first RF signal path is inactive.

Abstract: A mobile terminal is disclosed to solve a problem of a control method of the related art for controlling an external device, which is not intuitive and inconvenient. The mobile terminal comprises a camera configured to receive a preview image including at least one external device; a display unit configured to display the preview image; and a controller operably coupled with the camera and the display unit, and configured to control the display unit to display a control menu for the external device included in the preview image, and generate a control signal corresponding to a user input signal for the control menu in response to the user input signal.

Abstract: A traffic collision avoidance system (TCAS), configured to transmit a wide transmit beam of approximately 180 degrees. The wide transmit beam may be, for example at the interrogation frequency or a transponder response frequency. The TCAS of this disclosure includes a directional antenna system with two signal input ports and two or more antenna elements. In some examples, the direction of the 180 degree beam may be controlled by the phase relationship between the signals input to the two port antenna. In other examples, the direction of the transmit beam from the antenna system is predefined to be in two complementary directions (e.g., forward and aft).

Abstract: A latch assembly for latching a battery to a portable communication device includes a latch holder having an elongate body defining an axis, and a latch catch configured to be coupled to the latch holder and to slide linearly relative to the latch holder along the axis. The latch assembly additionally includes a latch spring configured to be coupled to both the latch holder and the latch catch to bias the latch catch along the axis, and a latch button configured to be coupled to the latch holder. The latch assembly additionally includes a latch pin configured to removably engage and disengage the latch holder to retain the latch assembly inside the portable communication device and allow removal of the latch assembly.

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). According to various embodiments of the present disclosure, an apparatus of a transmitter in a wireless communication system may include an oscillating circuit for providing an oscillating signal, and a radio frequency (RF) circuit for converting a frequency of a transmit signal using the oscillating signal, and transmitting the transmit signal. The oscillating circuit may generate a base oscillating signal of a differential signal form, by multiplying a first signal and a second signal which constitute the different signal, generate a first signal set from the first signal and a second signal set from the second signal, and generate a signal in which at least one harmonic component adjacent to an intended frequency component is suppressed using the first signal set and the second signal set.

Abstract: A communication device includes a control device and a compensation device. The control device communicates with another device using an antenna. The compensation device is connected to the control device via a first transmission line. The compensation device is connected to the antenna via a second transmission line. The compensation device compensates a loss in an RF signal bidirectionally transmitted between the control device and the antenna via the first and second transmission lines.

Abstract: Methods and circuits for reducing power dissipation in wireless transceivers and other electronic circuits and systems. Embodiments of the present invention use bias current reduction, impedance scaling, and gain changes either separately or in combination to reduce power dissipation. For example, bias currents are reduced in response to a need for reduced signal handling capability, impedances are scaled thus reducing required drive and other bias currents in response to a strong received signal, or gain is increased and impedances are scaled in response to a low received signal in the presence of no or weak interfering signals.

Abstract: Disclosed in the present invention are a multimode and multi-frequency radio frequency front end module, a chip, and a communication terminal. The radio frequency front end module comprises an input matching unit, an amplification unit, a first output matching module, a first switch module, a second matching module, and a control unit. The control unit is connected to the first switch module and is used for controlling a switch state of the first switch module, so as to input a radio frequency signal to one or more radio frequency transmission paths.

Abstract: A method for receiving a radiofrequency signal in a system having an emitter, a satellite and at least one characterization receiver implementing a characterization phase of the satellite. The method includes: transmitting to the emitter, over a first transmission link, at least one transmission command of at least one reference signal, receiving the at least one reference signal, emitted by the emitter over a second transmission link via the satellite, termed the received signal, estimating at least one distortion generated by the satellite, from the at least one reference signal, delivering at least one piece of information on compensation of the distortions affecting the received signal, and transmitting to the emitter, over the first transmission link, the at least one piece of distortion compensation information.

Abstract: Various embodiments of the present invention disclose a method and a device for managing an operation mode of an electronic device which uses a low power wide area network (LPWAN).

Abstract: One example discloses a near-field wireless device, including: a coil, including a first feed-point and a second feed-point, and configured to carry non-propagating quasi-static near-field magnetic-induction wireless signals; a conductive surface, including a third feed-point, and configured to carry non-propagating quasi-static near-field electric-induction wireless signals; a tuning circuit including a first tuning element, a second tuning element, and a mid-point; wherein a first end of the first tuning element is coupled to the first feed-point; wherein a first end of the second tuning element is coupled to the second feed-point; wherein a second end of the first tuning element and a second end of the second tuning element are coupled to the mid-point; and wherein the third feed-point is coupled to the mid-point.

Abstract: A near-field test system for a phased array antenna includes a probe, a beam forming network, and a computing system. The probe is disposed at a fixed position in a near-field of the antenna and is configured to receive at least a portion of a test beam radiated by the antenna. The beam forming network is coupled to the antenna and includes a plurality of phase shifters configured to steer the test beam to a position in the near-field when radiated by an array of antenna elements of the antenna. The computing system is coupled to the probe and is configured to normalize received power of the test beam based on the position of the beam in the near-field relative to the fixed position of the probe, and generate a far-field antenna pattern for the antenna from normalized received power of the test beam.

Abstract: The present invention provides a safety control system for a vehicle with controls located on the vehicle steering wheel. The controls maybe arranged in a cluster on one or both sides of the upper half of the steering wheel. The controls can be located in areas of the steering wheel including the spokes, the rim or a special flange extended from the rim or the spoke of the steering wheel and are easily recognizable and accessible by the driver while the driver is looking ahead from a normal driving position with the driver's eyes focused on the road and maintaining the driver's hands on the steering wheel. The controls can be further enhanced by varied coloring, shape, size, and texture to make them easily identifiable. The controls can be used to access and control vehicle systems or portable telematics devices in multi modal process in conjunction with thumb gesture interpretation or speech recognition.

Abstract: The present disclosure provides a radio frequency (RF) front-end of a low power consumption and fully automatic adjustable broadband receiver, including a low-noise amplification module, amplifying an broadband single-ended RF signal, and converting it into differential current signal; a local oscillator, generating a local oscillator signal; an quadrature mixer, quadraturely mixing the differential current signal and the local oscillator signal to generate intermediate frequency differential current signals; a transimpedance amplifier, converting the intermediate frequency differential current signal into an intermediate frequency differential voltage signal; an IIP2 calibration module, reducing the IIP2 effect of the RF front end; a received signal strength indicator module, sending the first amplification factor control signal and the differential mismatch control signal to the low noise amplification module, and sending the second amplification factor control signal to the transimpedance amplifier, thereb

Abstract: A self width-adjusting device holder comprises two width-adjustable side walls or plates, a stopper a resilient width-adjustment mechanism and a base plate. The two width-adjustable side plates are adapted to be pushed away from each other when a device is inserted and to automatically move toward each another or retract when a device is removed from the holder. The width-adjustable plates may be slidably mounted on the base plate. As these two side plates slide, the receiving area may be adjusted to be adapted to the devices with different sizes.

Abstract: An adjustable mirror assembly for a handheld image recording device and the methods of use thereof is described. Typically, the adjustable mirror assembly comprises a case for receiving and retaining a handheld image recording device therein and a cover having a mirror, wherein the cover is movably coupled with the case by way of a hinge assembly. In other variations, the cover is movably coupled with the handheld image recording device by way of a hinge assembly coupled directly with or to the handheld image recording device.

Abstract: Apparatuses, systems, and methods for enhancement of Wi-Fi calling for DSDS user equipment devices (UEs). The UE may register a first connection supported by a first SIM with IMS for VoWiFi based on a determination to prefer VoWiFi for the first SIM. The first SIM may be associated with a first subscription to a first RAN. The UE may include a second SIM that may be associated with a second subscription to a second RAN. The UE may register a second connection associated with the second SIM with the IMS for VoWiFi and/or VoLTE and initiate/receive, via the first connection supported by the first SIM, a VoWiFi call. A recommendation to handover the VoWiFi call from Wi-Fi to cellular data may be received and, based, at least in part, on the recommendation, the UE may register a second connection associated with the second SIM for IWLAN over cellular data.

Abstract: One example discloses a near-field device, including: a conductive housing physically coupled to the near-field antenna; a near-field antenna, having a first feed point and a second feed point, and including, a first inductive coil; a first conductive plate capacitively coupled to the conductive housing, and galvanically coupled to the first end of the first inductive coil; a second conductive plate capacitively coupled to the conductive housing, and galvanically coupled to the second end of the first inductive coil; a reference potential; and wherein the conductive housing 302 is galvanically coupled to the reference potential; wherein the first inductive coil is configured to receive or transmit near-field magnetic signals; and wherein the first and second conductive plates and the conductive housing are configured to receive or transmit near-field electric signals.

Abstract: A technology is described for a bi-directional repeater having a switchable antenna port. The repeater can comprise a switchable common port, a switchable second-band port, and a switchable third-band port. The repeater can have a first-band amplification and filtering path coupled to the switchable common port via a first path of a first multiplexer. The repeater can have a second-band amplification and filtering path coupled to one of the switchable common port via a second path of the first multiplexer, a first path of a first radio frequency (RF) switch, and a first path of a second multiplexer. The repeater can have a third band amplification and filtering path coupled to the switchable common port via a first path of a second RF switch, the second path of the second multiplexer, the first path of the first RF switch, and the second path of the first diplexer.

Abstract: The disclosure relates to an electronic device, including a device body; a flexible screen assembled on the device body; and an antenna component assembled on the device body. A bent display status of the flexible screen matches with a contracted status of the device body, and an unfolded display status of the flexible screen matches with an extended status of the device body, so that the electronic device can be used in contraction and extension statuses. Furthermore, the main board of the device body can control at least one radiating element of the antenna component to form a first antenna scheme when the device body is in the extended status, and form a second antenna scheme when the device body is in the contracted status.