The present disclosure relates to an electronic device for radiating an output signal in a wireless communication system. In one embodiment, the electronic device includes: a power amplifier configure to receive an input signal; a splitter connected to the power amplifier, which a plurality of branches; a plurality of filters connected to the plurality of branches of the splitter; and a plurality of antenna elements connected to the plurality of filters. The plurality of antenna elements radiates the output signal that is a portion of the input signal received by the power amplifier.

Techniques and apparatus for tuning a wireless data transmission system in an electronic device. One example method includes receiving a measured impedance value corresponding to a current user interaction state with respect to one or more antennas of a mobile device; determining a user interaction stability state of the mobile device based on the measured impedance value and a set of historical impedance values; classifying the current user interaction state based at least on the measured impedance value and a plurality of impedance values from the set of historical impedance values; and tuning the one or more antennas based on the classified current user interaction state and the determined user interaction stability state of the mobile device.

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 RF signal switch circuit that allows connection of any of N radio frequency (RF) input terminals to a switch output port, either in a low loss mode, in a bypass mode, or, optionally, in a signal function mode. Embodiments of the invention allow for both a single switch in the series input path to a target circuit while still having the ability to isolate the bypass path from the target circuit. In the low loss and bypass mode, the circuit simultaneously exhibits low input insertion loss (and thus a low noise factor) and high bypass mode isolation.

The present description concerns an electromagnetic wave transmit/receive device comprising a multilayer organic substrate, an integrated circuit chip, flip-chip assembled on the multilayer organic substrate, a package comprising a first cavity, containing the multilayer organic substrate and the integrated circuit chip, and communicating over a channel with a second cavity forming a waveguide for electromagnetic waves.

An apparatus is disclosed for controlling a power amplifier that is coupled to an antenna element of an antenna array. In example implementations, an apparatus includes an antenna element of an antenna array and a power amplification system. The power amplification system includes at least one input node, at least one output node coupled to the antenna element, and at least one power amplifier branch coupled between the at least one input node and the at least one output node. The power amplification system also includes at least one feedback node coupled to the at least one output node, at least one control node, and a feedback control loop coupled between the at least one feedback node and the at least one control node.

A radio frequency circuit includes an amplifier capable of amplifying a first radio frequency signal and a second radio frequency signal that has a frequency different from a frequency of the first radio frequency signal. Here, the amplifier uses a first power-supply voltage to amplify one of the first radio frequency signal and the second radio frequency signal and uses a second power-supply voltage to amplify both the first radio frequency signal and the second radio frequency signal together. A value of the second power-supply voltage is greater than a value of the first power-supply voltage.

A radio-frequency system including: a self-complementary antenna characterized by an input impedance substantially independent of signal frequency across an operational frequency band; a passive coupling device characterized by a characteristic impedance and configured to couple the self-complementary antenna to a signal generator and a set of signal processors; a resistive matching network electrically connected between the self-complementary antenna and the passive coupling device configured to match the characteristic impedance of the passive coupling device to the input impedance of the self-complementary antenna; and a back-coupling line characterized by a substantially constant group delay across the operational frequency band configured to electromagnetically couple the signal generator to the set of signal processors.

Apparatus and methods for providing hot-switching immunity for radio frequency switching circuits are disclosed. A radio frequency switching circuit may include both a mechanical switch and a solid-state switch. The mechanical switch may be configurable to couple an output path of a power amplifier to a subsequent component in its transmission path when in a first mechanical switch state and to decouple the output path of the power amplifier from the subsequent component when in a second mechanical switch state. The solid-state switch may be configurable to operatively decouple the mechanical switch from a radio frequency power source when in a first solid-state switch state but not when in a second solid-state switch state. The solid-state switch may be in the first solid-state switch state during transitions of the mechanical switch between the first and second mechanical switch states.

An electronic device is provided. The electronic device includes a housing including a conductive member on which at least one power supply point and ground point are positioned, at least one ground member arranged inside the housing, a first ground path connecting the ground point to the ground member, a second ground path connecting the ground point to the ground member, a printed circuit board (PCB) arranged inside the housing and a processor arranged on the PCB. The processor is configured to supply power to the at least one power supply point so that the conductive member transmits and/or receives a signal of a first frequency band.