BACKGROUND

An architecture of radio frequency front-end includes devices such as Power Amplifier (PA), Low Noise Amplifier (LNA), filter, duplexer, switch, antenna etc. With the increase of new frequency bands and the wide application of technologies such as carrier aggregation, Multiple Input Multiple Output (MIMO) etc. There are more and more radio frequency devices, and the architecture of radio frequency front-end also becomes more and more complicated. Various radio frequency devices can occupy a large area in the radio frequency system.

SUMMARY

The present disclosure relates generally to the field of electronics, and more specifically to an architecture of radio frequency front-end.

Various embodiments of the disclosure provide an architecture of radio frequency front-end.

An architecture of radio frequency front-end provided by embodiments of the disclosure can include a power amplifier module (PAM), a front-end module integrated duplexer (FEMiD), an antenna and at least one tunable matching network;

Herein, the PAM includes a power amplifier, and the at least one tunable matching network is located between the power amplifier and the antenna and is configured to adjust at least one of the impedance of the output end of the power amplifier or the impedance of the input end of the antenna.

In an alternative implementation of the disclosure, the FEMiD includes a first switch, a second switch and multiple branches located between the first switch and the second switch; or,

The PAM includes a first switch, and the FEMiD includes a second switch and multiple branches located between the first switch and the second switch; or,

A first switch is provided between the FEMiD and the PAM, and the FEMiD includes a second switch and multiple branches located between the first switch and the second switch;

Herein, each of the multiple branches includes a filter or a duplexer, and the input end and the output end of the filter or the duplexer are provided with an input matching network and an output matching network, respectively.

In an alternative implementation of the disclosure, the at least one tunable matching network includes at least one of: at least one first tunable matching network, at least one second tunable matching network, or at least one third tunable matching network.

In an alternative implementation of the disclosure, the first tunable matching network is located between the power amplifier and the first switch.

In an alternative implementation of the disclosure, the first tunable matching network is integrated into the PAM; or,

The first tunable matching network is integrated into the FEMiD; or,

The first tunable matching network is independently provided between the PAM and the FEMiD.

In an alternative implementation of the disclosure, the second tunable matching network is located between the second switch and the antenna.

In an alternative implementation of the disclosure, an antenna matching network is further provided between the second switch and the antenna;

Herein, the second tunable matching network is located between the antenna matching network and the antenna; or,

The second tunable matching network is located between the second switch and the antenna matching network.

In an alternative implementation of the disclosure, in a case that the second tunable matching network is located between the second switch and the antenna matching network,

The second tunable matching network is integrated into the FEMiD; or,

The second tunable matching network is independently provided between the FEMiD and the antenna matching network.

In an alternative implementation of the disclosure, the third tunable matching network is located in the branch of the FEMiD.

In an alternative implementation of the disclosure, the third tunable matching network is an input matching network in the branch; or, the third tunable matching network is an output matching network in the branch.

In an alternative implementation of the disclosure, the tunable matching network includes at least one type of the following components: an inductor, a capacitor, a resistor, a transmission line or a switch; and herein, the impedance value in the tunable matching network is adjustable.

In some embodiments of the disclosure, the architecture of radio frequency front-end includes a power amplifier module (PAM), a front-end module integrated duplexer (FEMiD), an antenna and at least one tunable matching network; herein, the PAM includes a power amplifier, and the at least one tunable matching network is located between the power amplifier and the antenna and is configured to adjust at least one of the impedance of the output end of the power amplifier or the impedance of the input end of the antenna. By the impedance matching of the architecture of radio frequency front-end through the tunable matching network, the architecture of radio frequency front-end can maintain better operating performance in multiple radio frequency channels, which can overcome the difficulties in debugging and low flexibility of the radio frequency architecture in related art, and make the radio frequency architecture have the characteristics such as high degree of integration, high performance, flexibility, low cost etc. at the same time.

