Abstract: The invention provides a communication device and a communication method. The communication device with at least a first antenna and a second antenna includes a switch element, a transceiver, and an antenna selection and control module. The switch element is coupled to the first antenna and the second antenna. The transceiver is coupled to the switch element. The antenna selection and control module controls the switch element to switch between the first antenna and the second antenna, such that the first antenna and the second antenna are respectively set as an operating antenna and a non-operating antenna. In one or more busy time periods of the operating antenna, the transceiver measures a first communication quality parameter of the operating antenna. In one or more idle time periods of the operating antenna, the transceiver measures a second communication quality parameter of the non-operating antenna.

Abstract: Analog interference filter devices and methods for isolation of desirable portions of a radio frequency signal. Signal compensation is used to provide desirable center frequency, passband width, ripple, rolloff, stopband and distortion performance. The filter is implemented with passive and/or active components.

Abstract: A mobile phone holder. The mobile phone holder provides a device for securing a cellular communications device to clothes. The holder includes a housing having an open upper end, a rear wall, arcuate side walls, and a bottom end forming a pocket configured to slidably receive and secure a phone in the housing. The sidewalls include cut-out portions and the bottom end includes a slot for providing access to inputs and outputs of a cell phone. A pair of opposing straps are disposed on an exterior surface of the rear wall that are configured to secure the holder to a user's clothing. In this way, a user may attach a cell phone to his or her clothes in order to communicate over the phone without compromising his or her hands.

Abstract: An apparatus to control an external device includes a connector to electrically connect with the external device, a connection detector to determine whether the external device is electrically connected to the connector, and a controller to obtain level information corresponding to the external device from the connector, to determine a type of the external device based on the level information, and to control execution of a function of the apparatus based on the determined type, wherein the level information is different according to the type of the external device.

Abstract: A distortion compensation apparatus that compensates for distortion of an amplifier is provided. The distortion compensation apparatus includes: a distortion compensation processing section that performs a predistortion process for a signal provided to the amplifier, based on an amplifier model of the amplifier, and outputs a compensated signal; an estimation section that estimates the amplifier model; and a filter. The estimation section estimates the amplifier model, based on the compensated signal and a monitor signal obtained by monitoring an output of the amplifier. The monitor band of the monitor signal provided to the estimation section is narrower than a frequency band of the compensated signal. The filter is provided so as to eliminate an influence of a signal component outside the monitor band among signal components of the compensated signal, on the estimation of the amplifier model by the estimation section.

Abstract: An apparatus and method. The method includes filtering an output of an in-phase (I-mixer); filtering an output of a quadrature-mixer (Q-mixer); converting an output of a first low pass filter (LPF); converting an output of a second LPF; buffering an output of a first analog-to-digital converter (ADC); buffering an output of a second ADC; buffering a transmitter signal; generating a reference signal from an output of a transmitter (TX) data capture buffer; removing DC from the reference signal; and adaptively tuning an I-mixer digital-to-analog (DAC) code and a Q-mixer DAC code from an output of a first receiver (RX) data capture buffer, an output of a second RX data capture buffer, an output of a DC removal unit, and a predetermined step size for each of the I-mixer DAC code and the Q-mixer DAC code.

Abstract: A communication device may include a processor, a memory storing computer-readable instructions, and a Near Field Communication (NFC) interface. The computer-readable instructions may instruct of otherwise cause the communication device to perform determining whether a state of the communication device is a first state. In a case where the state of the communication device is determined to be the first state, the NFC interface may establish a first type of communication link and transmit first data to the first external device via the first type of communication link. Additionally or alternatively, in a case where the state of the communication device is determined not to be the first state, the NFC interface may establish a second type of communication link, the second type of communication link and communicate second data with the second external device via the second type of communication link.

Abstract: A wireless communication system is provided that is capable of enabling more wireless devices to perform concurrent communication using a polarized wave technology.

Abstract: A wireless communication device includes a memory and a processor coupled to the memory and configured to receive, from a first device, a first identifier identifying the first device, the first device having a function of performing wireless communication, determine which of a first connection scheme and a second connection scheme is employed for the wireless communication based on the first identifier, the second connection scheme performing a connection after execution of selection processing in which the processor determines whether or not the wireless communication is started between the first device and the wireless communication device, and the first connection scheme performing the connection without the execution of the selection processing, and perform the connection between the wireless communication device and the first device using one of the first connection scheme and the second connection scheme in accordance with a result of a determination.

Abstract: A test apparatus for testing a base station of a wireless communication system, comprises a downlink port, which receives a downlink signal from the base station, an uplink port, which emits an uplink signal to the base station, a signal processing unit, which is coupled to the downlink port and analyzes the downlink signal for timing information and generates a timing synchronization signal based on the downlink signal, and a signal generator, which is coupled to the signal processing unit and the uplink port and generates a predetermined signal frame and emits the generated predetermined signal frame based on the synchronization signal via the uplink port to the base station.

Abstract: Electronically scanned array antenna radiating elements include a phase comparator. The phase comparator connects the transmission circuitry to the receiving circuitry via a shunt switch to compare the intended phase with the actual phase. The phase of a signal received via the shunt switch is sensitive to the performance of power amplifiers in the transmission circuitry, transmitter/receiver switch, and load impedance. Distributed attenuators between the shunt switch and a phase comparator reduce crosstalk. Phase comparison circuitry is useful for detecting faults in the ESA radiating element.

Abstract: Systems and methods may use proximate communication to retrieve information pertaining to a target device. In one example, the method may include detecting the target device within a vicinity of a user device, receiving an information request response communication including information pertaining to the target device, and receiving an operation request response communication including information pertaining to a performed operation.

Abstract: Disclosed is an operation method for an input device having a Bluetooth module, where the input device is a peripheral device of a computer. The operation method includes the following steps: a Bluetooth module of the input device connecting to and communicating with a Bluetooth module of a smart watch or a smart phone via a Bluetooth communication protocol; when the input device and the smart watch or the smart phone are close and perform a same operation, the Bluetooth module of the input device receiving data via the Bluetooth module of the smart watch or the smart phone, where the data is produced when an operation of the smart watch or the smart phone is sensed by at least one sensor of the smart watch or the smart phone; and a microprocessor of the input device storing the data received by the Bluetooth module of the input device in a memory of the input device.

Abstract: A method for pilot signal based self-interference cancellation tuning includes detecting a tuning trigger and in response to the tuning trigger, generating a pilot transmit signal according to the trigger data; and transmitting, at the transmitter, the pilot transmit signal; receiving, at the receiver, a pilot receive signal; cancelling, at the self-interference canceller, a portion of self-interference in the receive pilot signal, resulting in a composite pilot signal; analyzing the composite pilot signal; and tuning a configuration parameter of the self-interference canceller, based on analysis of the composite pilot signal, resulting in reduced self-interference in the composite pilot signal.

Abstract: Systems and methods may use proximate communication to retrieve information pertaining to a target device. In one example, the method may include detecting the target device within a vicinity of a user device, receiving an information request response communication including information pertaining to the target device, and receiving an operation request response communication including information pertaining to a performed operation.

Abstract: A high-frequency switch module includes a switch IC, a phase adjustment circuit, and a filter circuit. The phase adjustment circuit, which includes an inductor and capacitors, includes a ?-type circuit in which the inductor is connected in series between an individual terminal and the filter circuit. The filter circuit is an LC parallel resonant circuit including a filter inductor and a filter capacitor. A distortion second harmonic signal from the individual terminal of the switch IC is reflected by the filter circuit through the phase adjustment circuit and returns to the switch IC through the phase adjustment circuit. This distortion second harmonic signal, whose phase is adjusted by the phase adjustment circuit, is cancelled out by a distortion second harmonic signal output to a common terminal of the switch IC.

Abstract: Described herein are techniques related to near field coupling and WLAN dual-band operations. For example, a WLAN dual-band utilizes the same coil antenna that is utilized for near field communications (NFC) functions. The WLAN dual-band may be integrated into an NFC module to form a single module.

Abstract: An electronic device and a key module are provided. The electronic device includes a case, a key plate, a switch, a location sensor and a processor. The case has a first hole. The key plate is slidably disposed at the inner wall of the case. Portion of the key plate is exposed at the first hole, and the key plate is configured to slide between a first location and a second location. The switch is disposed at the case. The key plate is suitable for pressing the switch to enable the switch to send a switch signal. The location sensor is disposed at the case for sensing whether the key plate is located at the first location or the second location. The processor is electrically coupled to the switch and the location sensor and performs a first command or a second command in response to the switch signal and according the sensing result of the location sensor.

Abstract: A smartphone case system includes an electronic device that has a transceiver. The transceiver is in electrical communication with a communication network. A case is provided and the electronic device is positioned in the case. Thus, the case protects the electronic device. A strap is coupled to the case and the strap is spaced from the case. Thus, a hand may be passed between the strap and the case thereby facilitating the case to be gripped. A security chip is embedded within the case. The security chip is electrical communication with the communication network. Moreover, the security chip inhibits an unauthorized user from electronically gaining identity data from the electronic device.

Abstract: An amplifier applicable to an intra-band non-contiguous carrier aggregation (NCCA) band includes a first amplifier circuit and a second amplifier circuit. The NCCA band includes at least a primary component carrier (PCC) channel and a secondary component carrier (SCC) channel not adjacent to each other. The first amplifier circuit receives a first input signal, and generates a first output signal for undergoing down-conversion of one of the PCC channel and the SCC channel. The second amplifier circuit receives at least one second input signal, and generates a second output signal for undergoing down-conversion of another of the PCC channel and the SCC channel. The at least one second input signal received by the second amplifier circuit is provided by the first amplifier circuit according to the first input signal.