CN-122003814-A - Radio frequency front end chip, radio frequency front end circuit and electronic equipment

Abstract

The application discloses a radio frequency front end chip, a radio frequency front end circuit and electronic equipment, relates to the field of radio frequency, and is used for realizing a radio frequency front end integrating a plurality of satellite communication modes. The radio frequency front end chip comprises a radio frequency front end chip, a control circuit, a third power supply pin, a bias circuit, a first capacitor, a second capacitor, a coupling end of the coupler, a coupling output pin and a detection pin, wherein a plurality of input pins in the radio frequency front end chip are respectively electrically connected with a plurality of gating ends of the switch, the control circuit is electrically connected with the control pin, the third power supply pin and the bias circuit, the bias circuit is electrically connected with the PA, the PA is electrically connected with the first power supply pin and the second power supply pin, a common end of the switch is electrically connected with the first end of the first capacitor, the second end of the first capacitor is electrically connected with the PA input end, the output end of the PA is electrically connected with the input end of the coupler, the through end of the coupler is electrically connected with the first end of the second capacitor, and the coupling end of the coupler is electrically connected with the coupling output pin and the detection pin.

Inventors

• WANG TONG
• CAI JIAJIA
• LIU GANG
• PENG BIAO

Assignees

• 荣耀终端股份有限公司

Dates

Publication Date

20260508

Application Date

20250730

Priority Date

20240906

Claims (20)

1. The radio frequency front end chip is characterized in that the radio frequency front end chip is packaged with a plurality of devices and is integrated with a plurality of pins, wherein the devices comprise a Power Amplifier (PA), a coupler, a switch and a control circuit; The multiple gating ends of the switch are respectively and electrically connected with the multiple input pins, and the multiple input pins are used for inputting radio frequency signals of different satellite communication modes; the control end of the switch is electrically connected with the control circuit, the control circuit is electrically connected with the control pin, the control pin is used for controlling the switch to conduct one of the plurality of gating ends with the public end of the switch through the control circuit so as to transmit radio frequency signals of one of the radio frequency signals of different satellite communication modes to the PA, the PA is used for amplifying power of the radio frequency signals of one of the communication modes, the PA is electrically connected with the coupler, the coupler is used for transmitting the radio frequency signals of one of the communication modes to the antenna pin, and the antenna pin is used for transmitting the radio frequency signals of one of the communication modes to the antenna.
2. The radio frequency front end chip of claim 1, wherein the plurality of pins further comprises a first power pin, a second power pin, and a third power pin, the PA further electrically connected to the first power pin and the second power pin, the first power pin for powering a driver stage of the PA, the second power pin for powering a last stage of the PA, the control circuit further electrically connected to the third power pin, the third power pin for powering the control circuit.
3. The radio frequency front end chip of claim 1 or 2, wherein the plurality of pins further comprises a coupling-out pin, a detection pin, and the coupling end of the coupler is electrically connected to the coupling-out pin and the detection pin.
4. A radio frequency front end chip as recited in any of claims 1-3, characterized in that the plurality of devices further comprises a bias circuit, the bias circuit being electrically connected to the PA, the third power pin further being adapted to provide a bias voltage and a bias current to the PA via the bias circuit, the control pin further being adapted to control the bias voltage output by the bias circuit to the PA via the control circuit.
5. The radio frequency front end chip of any of claims 1-4, wherein the plurality of devices further comprises a first capacitor, the common terminal of the switch is electrically connected to a first terminal of the first capacitor, and a second terminal of the first capacitor is electrically connected to an input terminal of the PA.
6. The rf front-end chip of any of claims 1-5, wherein the plurality of devices further comprises a second capacitor, the output of the PA is electrically connected to the input of the coupler, the pass-through of the coupler is electrically connected to a first end of the second capacitor, and a second end of the second capacitor is electrically connected to the antenna pin.
7. The radio frequency front end chip of any of claims 1-6, wherein the plurality of pins further comprises a ground pin for grounding.
8. The radio frequency front end chip of any of claims 1-7, wherein the plurality of input pins comprises a first input pin, a second input pin, and a third input pin, and the plurality of gates of the switch comprises a first gate, a second gate, and a third gate; The first input pin is electrically connected with a first gating end of the switch, the second input pin is electrically connected with a second gating end of the switch, and the third input pin is electrically connected with a third gating end of the switch.
9. The radio frequency front end chip of any of claims 1-8, wherein the control pins comprise a first control pin, a second control pin, the first control pin and the second control pin for controlling the switch to conduct one of the first, second, and third gates with the common via the control circuit.
10. The radio frequency front end chip according to any of claims 1-9, wherein the package of the radio frequency front end chip is a quadrilateral, the plurality of input pins are located on a first side of the quadrilateral, the antenna pins and the coupling-out pins are located on a third side of the quadrilateral, and the first side is opposite to the third side.
11. The radio frequency front end chip of claim 10, wherein the control pin, the sense pin, and the third power pin are located on a fourth side of the quadrilateral.
12. The radio frequency front end chip of claim 10 or 11, wherein the first power pin and the second power pin are located at a second side of the quadrilateral.
13. The rf front-end chip of any of claims 10-12, wherein the remaining pins of the rf front-end chip are all ground pins, and wherein the plurality of ground pins are distributed in a center and four corners of the rf front-end chip.
14. The radio frequency front end chip of any of claims 10-13, wherein a package size of the radio frequency front end chip is 3.5mm by 3.5mm.
15. A radio frequency front-end circuit comprising a radio frequency front-end chip as claimed in any of claims 1-14.
16. The circuit of claim 15, further comprising a first filter, a first end of the first filter being an input for a radio frequency signal, the plurality of input pins including a first input pin, a second end of the first filter being electrically connected to the first input pin.
17. The circuit of claim 15 or 16, wherein the first control pin and the second control pin of the radio frequency front end chip are configured to be electrically connected to a baseband chip, the first power pin, the second power pin, and the third power pin of the radio frequency front end chip are configured to be electrically connected to a power source, and the coupling-out pin and the detection pin of the radio frequency front end chip are configured to be electrically connected to the baseband chip.
18. The circuit of any of claims 15-17, further comprising a harmonic rejection network, a first end of the harmonic rejection network being electrically connected to the antenna pin.
19. The circuit of claim 18, further comprising a first switch, a second terminal of the harmonic rejection network being electrically connected to a first gate terminal of the first switch, a first common terminal of the first switch being for electrical connection to the antenna.
20. The circuit of claim 19, further comprising a first low noise amplifier LNA, wherein a second end of the harmonic rejection network is electrically connected to a first gate end of the first switch, wherein a first common end of the first switch is electrically connected to the antenna, and wherein a second gate end of the first switch is electrically connected to an input end of the first LNA.

Description

Radio frequency front end chip, radio frequency front end circuit and electronic equipment The present application claims priority from the chinese patent application filed at 2024, 09 and 06, filed with the chinese national intellectual property office under application number 202422200742.0, entitled "radio frequency front end chip, radio frequency front end circuitry and electronic device", the entire contents of which are incorporated herein by reference. Technical Field The present application relates to the field of radio frequencies, and in particular, to a radio frequency front end chip, a radio frequency front end circuit, and an electronic device. Background More and more miniaturized electronic devices (such as mobile phones) support multiple satellite communication modes, such as Beidou satellite communication, space satellite communication, star network satellite communication and the like. The various satellite communication modes comprise independent baseband chips, radio frequency integrated circuits (radio frequency integrated circuit, RFICs) and radio frequency front-end chips, and particularly the radio frequency front-end chips of various satellite communication modes occupy too large area of a circuit board, so that the miniaturization of electronic equipment is not facilitated. Disclosure of utility model The embodiment of the application provides a radio frequency front end chip, a radio frequency front end circuit and electronic equipment, which are used for realizing the integration of the radio frequency front end chip with various satellite communication modes so as to be beneficial to the miniaturization of the electronic equipment. In order to achieve the above purpose, the embodiment of the present application adopts the following technical scheme: In a first aspect, a radio frequency front end chip is provided, including a Power Amplifier (PA), a coupler, a switch, a control circuit, a bias circuit, a first capacitor, a second capacitor, a plurality of input pins, a control pin, a first power pin, a second power pin, a third power pin, an antenna pin, a coupling output pin, a detection pin, and a ground pin; the power supply circuit comprises a plurality of input pins electrically connected with a plurality of gating ends of a switch respectively, a control end of the switch electrically connected with a control circuit, a control circuit electrically connected with a control pin, a third power pin and a bias circuit, the bias circuit electrically connected with a PA, the PA electrically connected with a first power pin and a second power pin, a common end of the switch electrically connected with a first end of a first capacitor, a second end of the first capacitor electrically connected with an input end of the PA, an output end of the PA electrically connected with an input end of a coupler, a direct current end of the coupler electrically connected with a first end of a second capacitor, a coupling end of the coupler electrically connected with a coupling output pin and a detection pin, a second end of the second capacitor electrically connected with an antenna pin, the plurality of input pins for inputting radio frequency signals of different satellite communication modes, the control pin for conducting one of the plurality of the gating ends with the common end through the control circuit, and the bias circuit outputting the coupled radio frequency signals to the PA, the coupling output pin for detecting the direct current signals for outputting the indicated power, the antenna electrically connected with the antenna, the first power pin for providing the power supply circuit for the first power supply circuit and the third power pin for driving the PA through the bias circuit, the ground pin is used for grounding. In the radio frequency front end chip provided by the embodiment of the application, a plurality of gating ends of the switch are respectively and electrically connected with a plurality of input pins, and each input pin can input a radio frequency signal in a satellite communication mode. The common end of the switch is electrically connected with the input end of the PA, the switch is controlled by a control signal input by the control pin, one of a plurality of gating ends of the selection switch is conducted with the common end, so that one of a plurality of input pins is selected to be conducted with the input end of the PA, and a radio frequency front end chip integrating various satellite communication modes is realized, thereby being beneficial to miniaturization of electronic equipment. In one possible implementation, the plurality of input pins includes a first input pin, a second input pin, and a third input pin, the plurality of gate ends of the switch includes a first gate end, a second gate end, and a third gate end, the first input pin is electrically connected to the first gate end of the switch, the second input pin is electrically connected t