An apparatus includes a low noise amplifier (LNA) multiplexer configured to receive a plurality of radio frequency (RF) signals at a plurality of input terminals and to combine the plurality of RF signals into a combined RF signal that is output at an output terminal. The LNA multiplexer includes a plurality of input signal paths, and each input signal path is coupleable to a respective input terminal of the plurality of input terminals and is configured to receive a respective RF signal of the plurality of RF signals. The apparatus further includes an LNA demultiplexer configured to receive the combined RF signal at an input port coupled to the output terminal and to distribute the combined RF signal to a plurality of output ports, each output port of the plurality of output ports configured to output the combined RF signal to a respective downconverter of a plurality of downconverters.

Various pertaining to a Wi-Fi dual-band dual-concurrent (DBDC) radio frequency (RF) front-end circuit are described. A device, which is configured to facilitate wireless communications in a DBDC application and a multiple-input-multiple-output (MIMO) application, includes a front-end circuit configured to support transmission at a first frequency band and at a second frequency band. The front-end circuit includes at least two antennas, at least two diplexers, a first circuit path and a second circuit path. The first circuit path is coupled to one of the at least two antennas and is configured to transmit and receive at the first frequency band. The second circuit path is coupled to the other one of the at least two antennas and is configured to transmit and receive at the second frequency band. The first frequency band and the second frequency band are split from a Wi-Fi 5 GHz˜6 GHz band.

An apparatus for wireless communication is provided. The apparatus includes a processing circuit configured to receive data to be wirelessly transmitted within a predefined frequency range. Further, the processing circuit is configured to generate a first radio frequency transmit signal of a first frequency range based on the data, and to generate a second radio frequency transmit signal of a second frequency range based on the data. The first frequency range and the second frequency range are subranges of the predefined frequency range. The apparatus further includes a front-end circuit configured to supply the first radio frequency transmit signal to a first antenna, and to supply the second radio frequency transmit signal to a second antenna.

This application discloses a wireless chip, a signal receiving method, and a wireless communications apparatus, and relates to the wireless communications field, to improve a signal strength of a received signal obstructed by an object, and select a wireless radio frequency channel corresponding to an antenna with good directivity. The wireless chip includes: a first wireless radio frequency channel, coupled to a first antenna; a second wireless radio frequency channel, coupled to a second antenna; and a wireless baseband, coupled to each of the first wireless radio frequency channel and the second wireless radio frequency channel, and configured to selectively receive a signal transmitted by a transmitting device, through at least one of the first wireless radio frequency channel or the second wireless radio frequency channel. The wireless chip can be a Bluetooth chip.

An antenna system for use with one or more media devices is provided. The antenna system includes a plurality of antenna elements. Each antenna element is associated with an independent feed element. In addition each antenna element is configured to receive a plurality of radio frequency (RF) signals. Each RF signal can be associated with a UHF band or a VHF band. The antenna system can include at least one tuner and at least one switching device. The at least one switching device can be configured to selectively couple the at least one tuner to one antenna element of the plurality of antenna elements based, at least in part, on channel selection data associated with the at least one tuner.

The present invention provides a radio frequency circuit and an electronic device. The radio frequency circuit includes a radio frequency transceiver having a first transmit port, a first radio frequency module connected to a first antenna array, a second radio frequency module connected to a second antenna array, and a first switch. A first input terminal of the first switch is connected to the first transmit port, and two output terminals of the first switch are respectively connected to the two radio frequency modules. In a case that the first switch is in a first state, the first transmit port is conductively connected to the first radio frequency module; or in a case that the first switch is in a second state, the first transmit port is conductively connected to the second radio frequency module.

According to various embodiments, an electronic device may include: a radio frequency integrated circuit (RFIC) including a plurality of first low noise amplifiers (LNAs); at least one radio frequency front end (RFFE) operatively connected to the RFIC; and at least one communication processor operatively connected to the RFIC, wherein the at least one communication processor is configured to: based on a first RF signal within a first uplink band of a first operating band being output via the RFIC, control the RFIC to set, to be a first gain, a gain of at least one first LNA among the plurality of first LNAs configured to process a second RF signal within a first downlink band of the first operating band provided from the at least one RFFE to the RFIC, and based on the first RF signal and a third RF signal within a second uplink band of a second operating band different from the first operating band being at least concurrently output via the RFIC, control the RFIC to set, to be a second gain, the gain of the at least one first LNA configured to process the second RF signal provided from the at least one RFFE to the RFIC, wherein the second gain is less than the first gain.

An apparatus comprising includes first and second radio frequency circuitry configured for operation at least in one or more first and second radio frequency bands, respectively; and first and second antenna arrangements configured for operation in the one or more first and second radio frequency bands, respectively. The apparatus also includes first and second radio frequency coupling for transferring of a signal between the first and second antenna arrangements, respectively, and the first and second radio frequency circuitry, respectively. The apparatus further includes a controller for assessing whether a signal can be transferred between the second antenna arrangement and the first radio frequency circuitry and, in dependence upon the assessment, for transferring the signal therebetween, via a frequency converter configured to enable, for the signal, frequency conversion between the one or more second radio frequency bands and the one or more first radio frequency bands.

A transmitter apparatus and method are disclosed. An RF terminal provides an RF signal. A first antenna transmits a first portion of the RF signal and a second antenna transmits a second portion of the RF signal. Directional couplers generate a first monitoring signal and a second monitoring signal. A power comparison operational amplifier receives the first monitoring signal and the second monitoring signal and generates a power difference signal. A phase control operational amplifier receives the power difference signal and a reference input signal and generates a phase control signal. A phase shifter receives the phase control signal, and based on the phase control signal, phase-shifts the RF signal to direct the RF signal to the first antenna, or phase-shifts the RF signal to direct the RF signal to the second antenna.

An apparatus comprises: a first plurality of first radio frequency chains; a second plurality of second radio frequency chains, the first radio frequency chains being configured to produce wider side-band emissions than the second radio frequency chains; at least one antenna array comprising antenna elements, each of a first plurality of the antenna elements being coupled with a corresponding one of the first plurality of first radio frequency chains, the first plurality of first radio frequency chains being configured to cause transmissions predominately in a first band within a channel, each of a second plurality of the antenna elements being coupled with a corresponding one of the second plurality of second radio frequency chains, the second plurality of second radio frequency chains being configured to cause transmissions predominately in at least one second band within the channel.