Abstract: A communication system is disclosed. The system can include a first communication unit including a first antenna, a second communication unit including a second antenna and a dielectric waveguide cable, and a rotary joint configured to enable the first unit to rotate with respect to the second unit about an axis of rotation of the system. The dielectric waveguide cable can extend from the second antenna to the rotary joint, where a proximal end of the cable can be coupled to the second antenna and a distal end of the cable can be affixed to the second unit at a location bordering a space defined by the rotary joint. The first and second units can be configured to engage in two-way communication with each other. An axis of the distal end of the cable can be substantially aligned with the axis of rotation of the system.

Abstract: A front-end module includes a substrate, and a receiving circuit that is provided in or on the substrate and in which CA is executed. The receiving circuit includes a first filter, a first inductor, and a first LNA disposed on a first path, and a second filter, a second inductor, and a second LNA disposed on a second path. A coil axis of the first inductor and a coil axis of the second inductor are different from each other.

Abstract: Systems, apparatuses, and methods for implementing enhanced beamforming training procedures are disclosed. A system includes a transmitter communicating over a wireless link with a receiver. To maintain a high quality of transmission over the wireless link, the transmitter and receiver perform periodic beamforming training procedures to test the various sectors of the transmit and receive antennas. In a wide sector sweep procedure, the transmitter and receiver test wide sectors to find the best wide transmit and receive sectors for transferring data. Then in a narrow sector sweep procedure, narrow sectors within and/or adjacent to the best wide sectors are tested, to find the best narrow sectors. This reduces the amount of sectors that are tested during the enhanced beamforming training procedure by skipping those narrow sectors that are far away from the best wide sectors.

Abstract: A receiver front end is provided with a bypass mode of operation in which a received carrier-aggregated RF signal bypasses a bandpass filter to drive a broadband low-noise amplifier. The low-noise amplifier amplifies the carrier-aggregated RF signal to form an amplified RF signal.

Abstract: A transmitting station includes a transmitting antenna whose orientation direction is changeable, and a controller that controls the orientation direction of the transmitting antenna according to an orientation direction of the transmitting antenna determined together with receiving stations to receive data transmitted from the transmitting antenna based on estimate values of received signal quality at receiving stations that are candidates for receiving stations to receive data transmitted from the transmitting antenna. The transmitting station can maintain received signal quality at a plurality of receiving stations at a desired value or more in a data transmission system.

Abstract: Disclosed is a radio-frequency (RF) circuit capable of performing an RF characteristic test in a test mode. The RF circuit includes: a test signal generator generating a test signal; an RF receiver, coupled to the test signal generator, transmitting the test signal and thereby generating a receiver analog signal; a coupling circuit transmitting the receiver analog signal to an RF transmitter in the test mode; the RF transmitter transmitting the receiver analog signal and thereby generating a transmitter analog signal; a test result generator, coupled between the RF transmitter and a test result output terminal, including a signal converter for generating a converted signal according to the transmitter analog signal in the test mode, wherein the output signal at the test result output terminal is the converted signal or originated therefrom and relates to the result of the RF characteristic test.

Abstract: An error amplifier for a pulse width modulation circuit is described. The amplifier includes an operational amplifier configured as an integrator and a feedback loop coupled between a signal output of the operational amplifier and an inverting input of the operational amplifier. The feedback loop comprises a feedback capacitor coupled to the signal output, a feedback resistor coupled to the feedback capacitor, and an integrator resistor coupled to the feedback resistor and the inverting input of the operational amplifier. A junction between the feedback resistor and the integrator resistor is configured to receive an input signal and a junction between the feedback capacitor and the feedback resistor is configured to receive a feedback signal from the pulse width modulation circuit.

Abstract: Energy harvesting Internet of Things (IOT) devices are shown including configurations involving a persistent memory, microcontroller, and flat antenna for electromagnetic RF harvesting. In one embodiment, multiple cycles of energy harvesting are performed by an IOT device, where power harvested via the flat antenna is transferred to a power storage of the device such that when the power storage has an amount of power the microcontroller performs processing resulting in state data stored to persistent memory, then during an additional cycle or cycles of energy harvesting, the device completes a process resulting in a payload that is sent to an end node via wireless transmission. Additional energy harvesting may be provided via an energy harvesting input that provides device input and causes additional energy for harvesting. Configurations include ones where energy harvesting is performed by the device, based on capturing vocal energy from a human voice spoken to the device.

Abstract: Exemplary aspects are directed to FM-radio receivers and methods to assess signals in a desired channel. In one example, a method includes demodulating a broadcast signal associated with a radio-frequency transmission using a desired-channel bandwidth setting and, in response, provide a first frequency-selective demodulated signal (e.g., MPX signal in an FM broadcast) and provide a magnitude indication, such as the raw signal level, of a second demodulated signal that is less frequency selective than the first frequency-selective demodulated signal. A level estimation circuit is used to assess a running representation (or effective average) of the magnitude indication over time. In this manner, a speed or rate at which the level estimator assesses the running representation is controlled based on a degree of deviation or offset as indicated by the first frequency-selective demodulated signal relative to a carrier frequency used for the broadcast signal.

Abstract: A mounting base (14) is fixed to an antenna (13) or an antenna bracket (15) for supporting the antenna (13). A baseband unit (11) and an RF unit (12) are fixed to the mounting base (14). The baseband unit (11) fixed to the mounting base (14) is disposed to face a back part (132) of the antenna (13) and to form a space between the back part (132) and the first enclosure (111). The RF unit (12) fixed to the mounting base (14) is disposed in the space formed between the back part (132) of the antenna (13) and the baseband unit (11) and is coupled to a waveguide flange (132) of the antenna (13). Thus, for example, in a configuration of a point-to-point wireless apparatus in which an RF unit and a baseband unit are separated, restrictions on installation space of the apparatus can be facilitated.

Abstract: A wireless communication device includes a first transceiver operable according to a first radio technology and a second transceiver operable according to a second radio technology and operable concurrently with the first transceiver. The wireless communication device further includes an antenna configured to transmit radio transmissions of the second transceiver, and a filter circuit coupling the second transceiver with the antenna. The filter circuit includes a first frequency path and a second frequency path in parallel. The first frequency path passes a first set of frequencies of the radio transmissions and the second frequency path passes a second set of frequencies of the radio transmissions. One of the first frequency path or the second frequency path is configured to filter the radio transmissions of the second transceiver to remove signals corresponding to the one or more operating frequencies of the first transceiver from the radio transmissions of the second transceiver.

Abstract: A system for generating a self-receive signal includes: a signal generator; a first signal processor; a second signal processor; and an antenna. The system also includes a first passive coupling device: defining a first input port electromagnetically coupled to the signal generator; defining a first transmitted port; defining a first coupled port electromagnetically coupled to the first signal processor; and characterized by a first phase balance between the first transmitted port and the first coupled port. The system further includes a second passive coupling device: defining a second input port electromagnetically coupled to the antenna; defining a second transmitted port electromagnetically coupled to the first transmitted port; defining a second coupled port electromagnetically coupled to the second signal processor; and characterized by a second phase balance between the second transmitted port and the second coupled port substantially similar to the first phase balance.

Abstract: Examples disclosed herein provide for the detection of an orientation of devices with respect to each other. Based on the orientation, one of the devices may route signals between wireless communication units of the devices, so that wireless communication units from one of the devices to make contact with the other device are properly mapped to input/output ports on the other device.

Abstract: A data channel and an audio channel may be established between a wearable device and a terminal. When being in the earphone mode, the wearable device notifies the terminal of a current status, and receives and plays the voice message that is obtained by converting the text message and that is sent by the terminal, thereby overcoming an insufficient screen display capability of the wearable device, and enabling a user to conveniently check content of the text message in time.

Abstract: An MFP establishes a first communication link L1 by receiving an activation command and sending an OK command. The MFP receives first target data from a portable device by using the first communication link. The MFP generates second target data by processing the first target data. After receiving the first target data, the MFP disconnects the first communication link. The MFP establishes a second communication link by receiving the activation command and sending the OK command. The MFP sends the second target data to the portable device by using the second communication link.

Abstract: A vehicle, control method of the vehicle, and antenna for vehicle is provided. The vehicle includes an antenna having different gain characteristics in different operating frequency bands; and a controller configured to correct reception strengths of a plurality of signals having different frequencies for carrying identical content, change the gain characteristic of the antenna based on the corrected reception strengths of the signals, and obtain content from a signal having a maximum corrected reception strength among the signals having different frequencies.

Abstract: A portable wireless communication device comprises a housing, a ground reference mass, a first antenna element, and a second antenna element. The first antenna element and the second antenna element are located at different sides of the housing. A radio-frequency (RF) port is electrically coupled to the first antenna element. An RF transmission line is located between the RF port and the second antenna element. The ground reference mass comprises a ground structure of the RF transmission line. An RF transceiver is electrically coupled to the first antenna element. The RF transceiver is further electrically coupled to the RF port to further electrically couple the RF transceiver to the second antenna element via the RF transmission line.

Abstract: An antenna system includes: a radiating element; a feed coupled to the radiating element at a first point on the radiating element and configured to convey energy to the radiating element; and a radiation-adjustment device coupled to the radiating element at a second point, configured to alter a radiation characteristic of the radiating element, and including: coarse-adjustment elements; an integrated-circuit chip including: switches, each coupled to a respective one of the coarse-adjustment elements where the coarse-adjustment elements are disposed external to the integrated-circuit chip; and a fine-adjustment circuit; the antenna system further including a controller communicatively coupled to the switches and to the fine-adjustment circuit, the controller configured to alter the radiation characteristic of the radiating element by selectively causing one or more of the switches to couple one or more of the coarse-adjustment elements to the radiating element, and by adjusting a value of the fine-adjustment

Abstract: Circuits for wireless communication on multiple frequency bands are provided. In accordance with some embodiments, transceivers are provided, the transceivers comprising: a first quadrature hybrid having a first in port, a first iso port, a first cpl port, and a first thru port; an antenna coupled to the first in port; a first transmitter having an output coupled to the first cpl port; and a first receiver having an input coupled to the first cpl port.

Abstract: Methods and devices are provided. One device includes an antenna, a microcontroller, and a power source. The power source configured to generate power in response to ambient energy received at a first frequency during a cycle of energy harvesting using the antenna. The power is transferred to a power storage cell such that when the power storage cell has an amount of power the microcontroller of the device processes at least a part of a processing task to be sent to an end node, and a result of processing of said at least said part of the processing task is stored. During one or more additional cycles of energy harvesting, using generated power to process one or more additional parts of the processing task to assemble a payload or process a wireless transmission of the payload. The wireless transmission of the payload is sent over a second frequency to the end node.