Radio frequency signal processing device and communication equipment

Abstract

The utility model discloses a radio frequency signal processing device and communication equipment. The radio frequency signal processing device comprises a receiving circuit, a transmitting circuit, a first baseband module, a second baseband module, a receiving multiplexing circuit and a transmitting multiplexing circuit, the receiving multiplexing circuit is respectively in signal connection with the receiving circuit, the first baseband module and the second baseband module; the transmitting multiplexing circuit is respectively in signal connection with the transmitting circuit, the first baseband module and the second baseband module; and the first baseband module and the second baseband module respectively process transceiving data of different communication standards. By using the scheme of the utility model, the area and the cost of the module or the communication equipment can be reduced, and the complexity of terminal realization is reduced.

Description

Technical Field

[0001] The utility model relates to the field of circuits, and in particular to a radio frequency signal processing device and communication equipment. Background Art

[0002] At present, with the maturity and application of 5G technology, 5G smart terminals have also been well developed and applied. The RF bands and MIMO (Multiple Input Multiple Output) signals in 5G smart terminals have become more numerous and complex.

[0003] The wireless communication standards in 5G smart terminals are divided into two categories: mobile communication and local or short-range communication. Mobile communication standards include 2G GSM (2nd Global System for Mobile Communications), 3G WCDMA (3rd Wideband Code Division Multiple Access), 4G LTE (4th Long Term Evolution), 5G NR (5th New Radio), etc. Local or short-range communication includes WIFI (Wireless Fidelity) and BT (Bluetooth). The working frequency bands and modulation methods of the two types of wireless communication standards are basically the same, and the standards in terms of radio frequency are also similar, especially the 4G LTE and 5G NR standards are more similar to the WIFI standard. For example, both types of wireless communication standards support frequency ranges of 2.0-2.7 GHz and 4.9-7.1 GHz, and the modulation methods include QPSK (Quadrature Phase Shift Keying), 16QAM (Quadrature Amplitude Modulation), 64QAM, and 256QAM, and both support MIMO.

[0004] In current modules and terminals, the two types of wireless communication standards use independent RF transceiver circuits (or RF transceiver chips), which not only increases the area and cost of the module or terminal, but also increases the complexity of terminal implementation. Summary of the invention

[0005] The embodiments of the utility model provide a radio frequency signal processing device and a communication device to reduce the area and cost of a module or a communication device and reduce the complexity of terminal implementation.

[0006] On the one hand, an embodiment of the utility model provides a radio frequency signal processing device, characterized in that it includes: a receiving circuit, a transmitting circuit, a first baseband module, a second baseband module, a receiving multiplexing circuit, and a transmitting multiplexing circuit; the receiving multiplexing circuit is respectively connected to the receiving circuit, the first baseband module, and the second baseband module by signal; the transmitting multiplexing circuit is respectively connected to the transmitting circuit, the first baseband module, and the second baseband module by signal;

[0007] The first baseband module and the second baseband module process receiving and transmitting data of different communication standards respectively.

[0008] Optionally, the first baseband module processes the received and sent data of the mobile communication standard; and the second baseband module processes the received and sent data of the local area network communication standard and / or the short distance communication standard.

[0009] Optionally, the local area network communication includes WIFI communication; and the short-range communication includes Bluetooth communication.

[0010] Optionally, the receiving multiplexing circuit sends the data signal output by the receiving circuit to the first baseband module or the second baseband module according to the current communication mode; the transmitting multiplexing circuit sends the digital signal output by the first baseband module or the second baseband module to the transmitting circuit.

[0011] Optionally, there are two or more receiving circuits, and the receiving multiplexing circuit is signal-connected to one of the receiving circuits.

[0012] Optionally, the receiving circuit includes a low noise amplifier, a mixer, an amplifier circuit, a filter circuit, and an AD conversion circuit which are signal-connected in sequence.

[0013] Optionally, there are one or more mixers.

[0014] Optionally, the first baseband module and the second baseband module are two independent chips.

[0015] Optionally, the first baseband module and the second baseband module are integrated on the same chip.

[0016] On the other hand, an embodiment of the utility model further provides a communication device, comprising the above-mentioned radio frequency signal processing device.

[0017] The radio frequency signal processing device and communication equipment provided by the embodiments of the utility model utilize a receiving multiplexing circuit and a transmitting multiplexing circuit to enable the reception and transmission of radio frequency data in different communication modes to share the same receiving circuit and transmitting circuit, thereby effectively saving hardware area and cost, and also reducing the complexity of terminal implementation.

[0018] Furthermore, there may be multiple mixers in the receiving circuit, so as to support different frequency ranges.

[0019] Furthermore, the baseband module and the RF transceiver circuit in the RF signal processing device can be flexibly configured. For example, the first baseband module and the second baseband module can be two independent chips, or integrated on the same chip. The RF transceiver circuit can be an independent chip, or integrated on one chip with one or more baseband modules, so as to better meet different application configuration requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a radio frequency transceiver circuit supporting mobile communication standards in the prior art;

[0021] Figure 2 It is a schematic diagram of a radio frequency transceiver circuit supporting a local area or short distance communication standard in the prior art;

[0022] Figure 3 It is a structural schematic diagram of a radio frequency signal processing device provided by an embodiment of the utility model;

[0023] Figure 4 It is a specific structural diagram of a radio frequency signal processing device provided by an embodiment of the utility model;

[0024] Figure 5 It is a structural schematic diagram of using multiple mixers in a receiving circuit in a radio frequency signal processing device provided by an embodiment of the utility model;

[0025] Figure 6 This is a schematic diagram of an integrated structure of a baseband chip in a radio frequency signal processing device provided by an embodiment of the utility model;

[0026] Figure 7 It is a structural diagram of a communication device provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and beneficial effects of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] In order to better understand the solution of the utility model, the existing radio frequency transceiver circuit supporting mobile communication standards and the radio frequency transceiver circuit supporting local area or short distance communication standards are briefly described below.

[0029] like Figure 1 FIG. 1 is a schematic diagram of a radio frequency transceiver circuit supporting mobile communication standards in the prior art.

[0030] The RF receiving circuit in the RF transceiver circuit is composed of two groups of identical circuits. The first RF receiving circuit is composed of low noise amplifiers (LNA) 111~11n, a mixer (Mixer) 101, an amplifier circuit (PMA) 102, a filter circuit 103 and an AD conversion circuit 104 in sequence; similarly, the second RF receiving circuit is composed of low noise amplifiers 211~11n, a mixer 201, an amplifier circuit 202, a filter circuit 203 and an AD conversion circuit 204 in sequence.

[0031] The radio frequency transmitting circuit in the radio frequency transceiver circuit is composed of a DA conversion circuit 304 , a filter circuit 303 , an amplifier circuit 302 , a mixer 301 , an attenuator 300 and a switch 311 .

[0032] The received data RX_data1 , RX_data2 and the transmitted data TX_data1 are processed by the baseband 108 .

[0033] like Figure 2 As shown, it is a schematic diagram of a radio frequency transceiver circuit supporting local area or short distance communication standards in the prior art.

[0034] The radio frequency receiving circuit in the radio frequency transceiver circuit is composed of low noise amplifiers (LNA) 411-412, a mixer (Mixer) 401, an amplifier circuit (PMA) 402, a filter circuit 403, an AD conversion circuit 404 and a data multiplexing circuit 405.

[0035] The radio frequency transmitting circuit in the radio frequency transceiver circuit is composed of a data multiplexing circuit 505 , a DA conversion circuit 504 , a filtering circuit 503 , an amplifying circuit 502 , a mixer 501 , an attenuator 500 and a switch 511 .

[0036] The received data RX_data4 , RX_data5 and the transmitted data TX_data4 , TX_data5 are processed by the baseband 408 .

[0037] In view of the fact that existing RF transceiver circuits supporting different communication standards need to be configured independently, which will increase the area of ​​the module or terminal and the complexity of implementation, the embodiments of the utility model provide a RF signal processing device and a communication device, which use the same RF transceiver circuit to realize the transmission and reception of RF signals of different communication modes.

[0038] like Figure 3 , which is a structural schematic diagram of a radio frequency signal processing device provided in an embodiment of the utility model.

[0039] The radio frequency signal processing device 3000 of this embodiment includes: a receiving circuit 3111, a transmitting circuit 3221, a first baseband module 4111, a second baseband module 4221, a receiving multiplexing circuit 3112, and a transmitting multiplexing circuit 3222. The receiving multiplexing circuit 3221 is signal-connected to the receiving circuit 3111, the first baseband module 4111, and the second baseband module 4221 respectively; the transmitting multiplexing circuit 3222 is signal-connected to the transmitting circuit 3221, the first baseband module 4111, and the second baseband module 4221 respectively.

[0040] In this embodiment, the first baseband module 4111 and the second baseband module 4221 process the transceived data of different communication standards respectively. The first baseband module 4111 processes the transceived data of the mobile communication standard (also called the communication mode), and the second baseband module processes the transceived data of the local area network communication standard (such as WIFI communication) and / or the short distance (such as Bluetooth communication) communication standard.

[0041] Combine the following Figure 3 Describe the data transmission and reception process of different communication standards.

[0042] For the receiving path, the receiving circuit 3111 receives the RF signal, converts the RF signal into a digital signal and outputs it to the receiving multiplexing circuit 3112; the receiving multiplexing circuit 3112 sends the digital signal output by the receiving circuit 3111 to the first baseband module 4111 or the second baseband module 4221 according to the current communication mode. Specifically, if the current communication mode is the mobile communication mode, the digital signal is sent to the first baseband module 4111; if the current communication mode is the local area network and / or short-range communication mode, the digital signal is sent to the second baseband module 4221.

[0043] For the transmission path, whether the transmission multiplexing circuit 3222 receives the digital signal output by the first baseband module 4111 or the second baseband module 4221, it will send the digital signal to the transmission circuit 3221, and the transmission circuit will convert it into a radio frequency signal for transmission. It should be noted that the transmission multiplexing circuit 3222 can be controlled by corresponding software to select the digital signal of the first baseband module 4111 or the digital signal of the second baseband module 4221 for transmission, and this embodiment does not limit the selection method.

[0044] The receiving multiplexing circuit 3112 transparently transmits the received digital signal to the first baseband module 4111 or the second baseband module 4221; similarly, the transmitting multiplexing circuit 3222 transparently transmits the baseband data received from the first baseband module 4111 or the second baseband module 4221 to the transmitting circuit 3221, which will not affect the reception and transmission of data.

[0045] It should be noted that there may be one or more receiving circuits 3111. Accordingly, in the case of multiple receiving circuits, the receiving multiplexing circuit 3112 only needs to be signal-connected to one of the receiving circuits.

[0046] Reference Figure 4 , Figure 4 A schematic diagram of a specific implementation structure of the radio frequency signal processing device of the utility model is shown.

[0047] In this example, the receiving circuit includes a low-noise amplifier, a mixer, an amplifier circuit, a filter circuit, and an AD conversion circuit that are connected in sequence; the transmitting circuit includes a DA conversion circuit, a filter circuit, an amplifier circuit, a mixer, an attenuator, and a switch that are connected in sequence.

[0048] Will Figure 4 The radio frequency signal processing device of the utility model is shown Figure 1 Compared with the radio frequency transceiver circuit supporting the mobile communication standard in the prior art, the radio frequency signal processing device adds a receiving multiplexing circuit 3112 and a transmitting multiplexing circuit 3222.

[0049] The receiving multiplexing circuit 3112 can send the received data to the data port of the corresponding baseband according to the current working communication standard (working mode). For example, when working in the mobile communication mode, the receiving multiplexing circuit 3112 sends the received data to the mobile communication data port 1 of the baseband 108; when working in the WIFI communication mode, the receiving multiplexing circuit 3112 sends the received data to the WIFI data port 1 of the baseband 408; when working in the Bluetooth communication mode, the receiving multiplexing circuit 3112 sends the connected data to the Bluetooth data port 1 of the baseband 408.

[0050] The transmission multiplexing circuit 3222 can send the baseband data to the DA conversion port of the RF transceiver circuit according to the current working communication standard (working mode). For example, when working in the mobile communication mode, the baseband data output by the mobile communication data port 3 is sent to the DA conversion circuit 304 through the transmission multiplexing circuit 3222; when working in the WIFI communication mode, the baseband data output by the WIFI data port 2 is sent to the DA conversion circuit 304 through the transmission multiplexing circuit 3222; when working in the Bluetooth communication mode, the baseband data output by the Bluetooth data port 2 is sent to the DA conversion circuit 304 through the transmission multiplexing circuit 3222.

[0051] It should be noted that, in a non-limiting embodiment, the mixer 101 in the receiving path may be composed of a plurality of mixers to support different frequency ranges, such as Figure 5 shown.

[0052] Similarly, the mixer 201 in the receiving path and the mixer 301 in the transmitting path may also be composed of multiple mixers to support different frequency ranges respectively.

[0053] In a specific implementation, the baseband 108 and baseband 408 for processing the receiving and transmitting data of different communication standards may be two independent chips or an integrated chip that supports two types of communication standards at the same time. Figure 6 The corresponding diagrams are given.

[0054] Similarly, the radio frequency transceiver circuit in this embodiment, that is, Figure 3 The receiving circuit 3111 and the transmitting circuit 3221 in the embodiment may be independent chips, or may be integrated into one chip with one or more of the baseband 108, the baseband 408, and the integrated baseband 608.

[0055] It should be noted that the RF transceiver circuit and baseband in the embodiment of the utility model can be configured as multiple, such as 2 RF transceiver circuits and 2 basebands when supporting MIMO (Multiple Input Multiple Output) specifications. The data reception and transmission process of each RF transceiver circuit and baseband is similar to that described above and will not be repeated here.

[0056] The radio frequency signal processing device provided by the embodiment of the utility model utilizes a receiving multiplexing circuit and a transmitting multiplexing circuit to enable the reception and transmission of radio frequency data in different communication modes to share the same receiving circuit and transmitting circuit, thereby effectively saving hardware area and cost, and also reducing the complexity of terminal implementation. Furthermore, the baseband module and the radio frequency transceiver circuit in the radio frequency signal processing device can be flexibly configured, thereby better meeting different application configuration requirements.

[0057] The radio frequency signal processing device provided in the embodiment of the utility model can be applied to chips, chip modules, and terminals. When applied to chips, it can be implemented in a radio frequency transceiver chip, or the baseband and the radio frequency transceiver can be integrated into one chip.

[0058] Accordingly, the embodiment of the present utility model further provides a communication device, such as Figure 7 As shown, the communication device 70 includes the above-mentioned radio frequency signal processing device 3000.

[0059] The communication device can support both mobile communication and local area / short distance communication standards, meeting the user's communication needs of various different standards.

[0060] The "plurality" appearing in the embodiments of the present invention refers to two or more than two.

[0061] The first, second, etc. descriptions appearing in the embodiments of the present invention are only used for illustration and distinction of the description objects. There is no order, nor does it indicate any special limitation on the number of devices in the embodiments of the present invention, and cannot constitute any limitation on the embodiments of the present invention.

[0062] Although the utility model is disclosed as above, the utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the scope defined by the claims.

Claims

1. A radio frequency signal processing device, characterized in that: include: A receiving circuit, a transmitting circuit, a first baseband module, a second baseband module, a receiving multiplexing circuit, and a transmitting multiplexing circuit; The receiving multiplexing circuit is respectively connected to the receiving circuit, the first baseband module and the second baseband module by signal; the transmitting multiplexing circuit is respectively connected to the transmitting circuit, the first baseband module and the second baseband module by signal; The first baseband module and the second baseband module process receiving and transmitting data of different communication standards respectively.

2. The radio frequency signal processing device according to claim 1, characterized in that: The first baseband module processes the transceiver data of the mobile communication standard; The second baseband module processes the received and sent data of the local area network communication standard and / or the short distance communication standard.

3. The radio frequency signal processing device according to claim 2, characterized in that: The local area network communication includes WIFI communication; the short distance communication includes Bluetooth communication.

4. The radio frequency signal processing device according to claim 1, characterized in that: The receiving multiplexing circuit sends the data signal output by the receiving circuit to the first baseband module or the second baseband module according to the current communication mode; The transmission multiplexing circuit sends the digital signal output by the first baseband module or the second baseband module to the transmission circuit.

5. The radio frequency signal processing device according to claim 1, characterized in that: There are one or more receiving circuits, and the receiving multiplexing circuit is signal-connected to one of the receiving circuits.

6. The radio frequency signal processing device according to claim 1, characterized in that: The receiving circuit includes a low noise amplifier, a mixer, an amplifier circuit, a filter circuit, and an AD conversion circuit which are sequentially connected.

7. The radio frequency signal processing device according to claim 6, characterized in that: There are one or more mixers.

8. The radio frequency signal processing device according to any one of claims 1 to 7, characterized in that: The first baseband module and the second baseband module are two independent chips.

9. The radio frequency signal processing device according to any one of claims 1 to 7, characterized in that: The first baseband module and the second baseband module are integrated on the same chip.

10. A communication device, characterized in that: include: A radio frequency signal processing device as claimed in any one of claims 1 to 9.

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