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CN-116683928-B - Radio frequency system and communication device

CN116683928BCN 116683928 BCN116683928 BCN 116683928BCN-116683928-B

Abstract

The application relates to a radio frequency system and communication equipment, wherein the radio frequency system comprises an antenna interface, a detection circuit, a processing circuit and a radio frequency front-end circuit, wherein the antenna interface is used for being connected with an external antenna, the detection circuit is connected with the antenna interface and used for generating access information after the antenna interface is detected to be accessed into the external antenna, the processing circuit is connected with the detection circuit and used for compensating emission parameters of radio frequency signals according to the access information, and the radio frequency front-end circuit is respectively connected with the processing circuit and the antenna interface and used for supporting emission processing of the radio frequency signals so as to emit the compensated radio frequency signals through the external antenna. The radio frequency system provided by the application can compensate the transmission parameters of the radio frequency signals transmitted by the external antenna, reduce the loss caused by the insertion loss of the external antenna, and improve the occurrence performance of the radio frequency system.

Inventors

  • LI HONGYUAN

Assignees

  • 成都欧珀通信科技有限公司

Dates

Publication Date
20260505
Application Date
20230516

Claims (11)

  1. 1. A radio frequency system, comprising: the antenna interface is used for being connected with an external antenna; The detection circuit comprises a detection module and a determination module, wherein the detection module is connected with the antenna interface and is used for detecting the electrical parameter information of the external antenna under the condition that the antenna interface is connected with the external antenna; the determining module is connected with the detecting module and is used for generating access information according to the electrical parameter information, wherein the access information comprises characteristic attribute information of the external antenna; the processing circuit is connected with the determining module and is used for compensating the transmitting parameters of the radio frequency signals according to the access information; And the radio frequency front-end circuit is respectively connected with the processing circuit and the antenna interface and is used for supporting the transmission processing of the radio frequency signals so as to transmit the compensated radio frequency signals through the external antenna.
  2. 2. The radio frequency system of claim 1, wherein the detection module comprises: The first end of the first resistor is respectively connected with the antenna interface and the radio frequency front end circuit, and the second end of the first resistor is used for receiving a reference voltage signal; The antenna comprises a first resistor, a voltage detection unit, a second resistor and a voltage detection unit, wherein the first resistor is connected with a first end of the first resistor and is used for acquiring first voltage of the first resistor, the first resistor is connected with the second resistor in parallel when the antenna interface is connected with the external antenna, the second resistor is an auxiliary resistor of the external antenna, the first voltage is electrical parameter information of the external antenna, and the first voltage is related to the resistance value of the second resistor.
  3. 3. The radio frequency system according to claim 2, wherein the determining module is further configured to determine a resistance value of the second resistor according to the first voltage, and determine antenna model information of the external antenna according to the resistance value of the second resistor; The processing circuit is also used for determining and compensating the transmitting parameters of the radio frequency signals according to the antenna model information and the mapping relation, wherein the mapping relation comprises the corresponding relation between the antenna model information and the transmitting parameters.
  4. 4. The radio frequency system of claim 1, wherein the detection circuit further comprises: The first isolation circuit is respectively connected with the radio frequency front-end circuit and the antenna interface and is used for isolating the compensated radio frequency signals transmitted by the channel between the radio frequency front-end circuit and the antenna interface and/or, And the second isolation circuit is respectively connected with the detection module and the antenna interface and is used for isolating the compensated radio frequency signals transmitted by the channel between the radio frequency front-end circuit and the antenna interface.
  5. 5. The radio frequency system of claim 1, wherein the processing circuit comprises: The processor is connected with the detection circuit and used for generating a compensation instruction according to the access information; and the radio frequency transceiver is respectively connected with the processor and the radio frequency front-end circuit and is used for compensating the transmitting power of the radio frequency signal according to the compensation instruction.
  6. 6. The radio frequency system according to claim 1, wherein the processing circuit is further configured to compensate the transmit power of the radio frequency signal based on the access information and a preset compensation parameter.
  7. 7. The radio frequency system of claim 1, wherein the radio frequency front-end circuit comprises: the radio frequency transceiver module is connected with the processing circuit and used for supporting the transmission processing of the radio frequency signals; The first end of the switch module is connected with the radio frequency transceiver module, one second end of the switch module is connected with the antenna interface, the other second end of the switch module is used for being connected with a built-in antenna, and the control end of the switch module is connected with the processing circuit; The processing circuit is also used for controlling the switch module to conduct a passage between the radio frequency transceiver module and the antenna interface according to the access information.
  8. 8. The radio frequency system of claim 7, wherein the processing circuit is further configured to control the switch module to turn on a path between the radio frequency transceiver module and the internal antenna if the antenna interface is not connected to the external antenna.
  9. 9. A communication device comprising an external antenna and a radio frequency system according to any of claims 1-8, said external antenna being interfaced with an antenna of said radio frequency system.
  10. 10. The communication device according to claim 9, characterized in that the communication device further comprises: And the first end of the second resistor is respectively connected with the antenna interface and the external antenna, and the second end of the second resistor is grounded.
  11. 11. The communication device according to claim 10, characterized in that the communication device further comprises: a third isolation circuit respectively connected with the antenna interface and the external antenna for isolating the compensated radio frequency signals transmitted by the channel between the antenna interface and the external antenna and/or, And the fourth isolation circuit is respectively connected with the first end of the second resistor and the antenna interface and is used for isolating the compensated radio frequency signals transmitted by the passage between the antenna interface and the external antenna.

Description

Radio frequency system and communication device Technical Field The present application relates to the field of radio frequency technology, and in particular, to a radio frequency system and a communication device. Background To enhance coverage of wireless signals, antennas are typically connected to the communication device to overcome losses during signal transmission, where the propagation losses include spatial losses of the signal propagating in space, transmission losses of the signal through building materials, and so on. Because the external antenna has a longer cable, the insertion loss of the external antenna is additionally introduced, and the performance of transmitting signals through the external antenna is lost. Disclosure of Invention The application provides a radio frequency system and communication equipment, which can compensate radio frequency signals and improve the performance of transmitting signals through an external antenna. In a first aspect, the present application provides a radio frequency system. The radio frequency system comprises: the antenna interface is used for being connected with an external antenna; the detection circuit is connected with the antenna interface and is used for generating access information after detecting that the antenna interface is connected with the external antenna; The processing circuit is connected with the detection circuit and is used for compensating the emission parameters of the radio frequency signals according to the access information; And the radio frequency front-end circuit is respectively connected with the processing circuit and the antenna interface and is used for supporting the transmission processing of the radio frequency signals so as to transmit the compensated radio frequency signals through the external antenna. In a second aspect, the present application further provides a communication device, where the communication device includes an external antenna and the radio frequency system provided in the first aspect. The radio frequency system comprises an antenna interface, a detection circuit, a processing circuit and a radio frequency front-end circuit, wherein the detection circuit generates access information after detecting that the antenna interface is connected with an external antenna, the processing circuit compensates the emission parameters of radio frequency signals according to the access information, and then, compared with the method of directly transmitting the radio frequency signals through the external antenna, the method compensates the transmission parameters of the radio frequency signals, counteracts the performance loss caused by the insertion loss of the external antenna to a certain extent, improves the transmission performance of a radio frequency system, and fills the short board of the external antenna in transmission. Drawings FIG. 1 is a schematic diagram of an external structure of a client front-end device according to an embodiment; FIG. 2 is a block diagram of an RF system according to one embodiment; FIG. 3 is a block diagram of a communication device according to one embodiment; FIG. 4 is a block diagram of a radio frequency system according to another embodiment; FIG. 5 is a block diagram of a radio frequency system according to yet another embodiment; FIG. 6 is a block diagram of a radio frequency system according to yet another embodiment; fig. 7 is a block diagram of a communication device according to another embodiment; fig. 8 is a block diagram of a communication device according to still another embodiment. Reference numerals illustrate: The device comprises a 10-client front-end equipment, a 11-shell, a 13-interface, a 131-power interface, a 133-USB interface, a 135-network cable interface, a 14-key, a 100-antenna interface, a 200-detection circuit, a 210-detection module, a 211-voltage detection unit, a 220-determination module, a 230-first isolation circuit, a 240-second isolation circuit, a 300-processing circuit, a 310-processor, a 320-radio frequency transceiver, a 400-radio frequency front-end circuit, a 410-radio frequency transceiver module, a 420-switch module, a 510-external antenna, a 520-third isolation circuit and a 530-fourth isolation circuit. Detailed Description The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of the application belong. The terminology used in the description of the embodiments of the application herein is for the purpose of describing particular