A wireless communication apparatus 20 includes: a first communication unit configured to perform wireless communication that supports a plurality of wireless communication systems with different using frequency bands; a second communication unit configured to perform wired communication that supports a plurality of wired communication systems each with a different basic frequency used in data communication; and a switching unit configured to switch a wired communication system used in the wired communication by the second communication unit so that the basic frequency falls outside a predetermined frequency band including the using frequency bands of the wireless communication by the first communication unit.

In one embodiment, a multi-transceiver RF signal processing system comprises: a controller; a DPD core and CFR engine; and a plurality of transceiver paths comprising at least a first transceiver path for a first frequency block, and a second transceiver path for a second frequency block. The first frequency block is adjacent to the second frequency block. Signal processing outputs a stream of digital RF based on wireless RF signals received into the first and second transceiver paths. Signal processing inputs a first stream of digital RF and outputs a first digital RF signal corresponding to the first frequency block to the first transceiver path, and outputs a second digital RF signal corresponding to the second frequency block to the second transceiver path for wireless transmission via the at least one antenna. The DPD core applies a distortion that covers the first and second frequency blocks.

An antenna structure includes a ground element, a first radiation element, a second radiation element, a third radiation element, and a dielectric substrate. The first radiation element has a feeding point. The first radiation element is coupled to a first grounding point on the ground element. The second radiation element is coupled to the feeding point. The third radiation element is coupled to a second grounding point on the ground element. The third radiation element is adjacent to the second radiation element. The ground element, the first radiation element, the second radiation element, and the third radiation element are all disposed on the dielectric substrate.

A monolithic integrated circuit (IC), and method of manufacturing same, that includes all RF front end or transceiver elements for a portable communication device, including a power amplifier (PA), a matching, coupling and filtering network, and an antenna switch to couple the conditioned PA signal to an antenna. An output signal sensor senses at least a voltage amplitude of the signal switched by the antenna switch, and signals a PA control circuit to limit PA output power in response to excessive values of sensed output. Stacks of multiple FETs in series to operate as a switching device may be used for implementation of the RF front end, and the method and apparatus of such stacks are claimed as subcombinations. An iClass PA architecture is described that dissipatively terminates unwanted harmonics of the PA output signal. A preferred embodiment of the RF transceiver IC includes two distinct PA circuits, two distinct receive signal amplifier circuits, and a four-way antenna switch to selectably couple a single antenna connection to any one of the four circuits.

A user terminal equipment and a method for antenna selection are provided according to the disclosure. The user terminal equipment includes a first signal transceiving antenna, K second signal transceiving antennas, and a rotating assembly. The first signal transceiving antenna and the K second signal transceiving antennas are disposed on the rotating assembly and configured to be driven to rotate by the rotating assembly, where K is a positive integer. The first signal transceiving antenna is configured to operate in a first frequency band, the K second signal transceiving antennas are configured to operate in a second frequency band, and the first frequency band is different from the second frequency band. The first signal transceiving antenna and the K second signal transceiving antennas are carried on a same rotating assembly to realize simultaneous rotation of two antennas operating in different frequency bands.

An electronic device includes a first communication circuit including a first transmission port which outputs a transmission signal of first communication and a first reception port which receives a reception signal of the first communication, a second communication circuit including a second transmission port which outputs a transmission signal of second communication and a second reception port which receives a reception signal of the second communication, a first branching filter connected to a first antenna and the first communication circuit, a second branching filter connected to a second antenna and the first communication circuit, a first switch connected to the second communication circuit through the second transmission port and the second reception port and connected to switch between the first branching filter, the second branching filter, and a third antenna, and a fourth antenna connected to the second communication circuit through the second reception port.

An electronic device may be provided with a phased antenna array that radiates at a frequency greater than 10 GHz. The array may include a dielectric resonator antenna having a dielectric column with non-planar sidewalls that include planar portions and corrugated portions with grooves and ridges, that include sidewall steps, and/or that include angled sidewall portions. The dielectric resonator antenna may include a first dielectric column and a second dielectric column stacked on the first dielectric column. The second column may be narrower and may have a higher dielectric constant than the first column or may have the same width but a lower dielectric constant than the first column. This may serve to broaden the bandwidth of the dielectric resonator antenna relative to scenarios where the dielectric resonator antenna includes only a single dielectric resonating element having only planar sidewalls.

An electronic device may include wireless circuitry with a baseband processor, a transceiver, and an antenna. The antenna may be coupled to one or more antenna tuning elements for tuning the antenna over multiple communications (frequency) bands of interest. The baseband processor may be configured to simultaneously broadcast, over a digital interface, an aggregate message that includes control bits for adjusting multiple antenna tuning elements coupled to the digital interface. Adjusting multiple antenna tuning elements by issuing a single broadcast command can help optimize interface efficiency while maintaining compatibility with existing industry standards.

A filter (22A) includes: a series arm circuit (11) that is connected between an input/output terminal (22m) and an input/output terminal (22n); and a parallel arm circuit (12) that is connected between a node (x1), which is on a path that connects the input/output terminal (22m) and the input/output terminal (22n), and ground. The parallel arm circuit (12) includes a parallel arm resonator (22p) and an impedance circuit (13) that is serially connected to the parallel arm resonator (22p). The impedance circuit (13) includes a first impedance element, which is one of an inductor and a capacitor, a second impedance element, which is the other of an inductor and a capacitor, and a switch (22SW) that is serially connected to the second impedance element. A first series circuit (14) comprising of the second impedance element and the switch (22SW) is connected in parallel with the first impedance element.

This disclosure provides a monitoring device, a wireless communication device, and a control method. The monitoring device includes a control system assembly, a digital-analog mixing assembly, a frequency band selection assembly, and an antenna. The control system assembly is respectively connected with the digital-analog mixing assembly and the frequency band selection assembly; one end of the frequency band selection assembly is connected with the digital-analog mixing assembly through a channel of designated frequency band, and the other end of the frequency band selection assembly is connected with the antenna. The monitoring device can switch from a currently used frequency band to other frequency bands for signal transmission or use other frequency bands for simultaneous signal transmission, according to a signal transmission status of the currently used frequency band. Thus, the anti-interference ability of the monitoring device can be improved to reduce the error rate of signal transmission.