CN107483060B - Radio frequency circuit, antenna device and electronic equipment - Google Patents

Radio frequency circuit, antenna device and electronic equipment Download PDF

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Publication number
CN107483060B
CN107483060B CN201710612955.6A CN201710612955A CN107483060B CN 107483060 B CN107483060 B CN 107483060B CN 201710612955 A CN201710612955 A CN 201710612955A CN 107483060 B CN107483060 B CN 107483060B
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CN
China
Prior art keywords
frequency
antenna
switch
port
radio frequency
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CN201710612955.6A
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Chinese (zh)
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CN107483060A (en
Inventor
丛明
冯斌
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Oppo广东移动通信有限公司
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Publication of CN107483060A publication Critical patent/CN107483060A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/005Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H04B1/0053Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
    • H04B1/006Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using switches for selecting the desired band
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40Circuits
    • H04B1/401Circuits for selecting or indicating operating mode

Abstract

The embodiment of the invention provides a radio frequency circuit, an antenna device and electronic equipment, wherein the radio frequency circuit comprises a radio frequency transceiver, a first switch, a second switch, a first antenna, a second antenna and a third antenna, the first switch is respectively connected with the radio frequency transceiver, the first antenna and the second antenna, the second switch is respectively connected with the radio frequency transceiver, the first antenna and the third antenna, and a high-frequency receiving port and an intermediate-frequency receiving port of the radio frequency transceiver are connected with the second antenna. The radio frequency circuit provided by the embodiment of the invention can realize the transmission and the reception of high-frequency signals, intermediate-frequency signals and low-frequency signals, can realize the carrier aggregation of the high-frequency signals and the low-frequency signals, and can also realize the carrier aggregation of the intermediate-frequency signals and the low-frequency signals, thereby improving the diversity of carrier aggregation and non-carrier aggregation of the radio frequency signals performed by electronic equipment.

Description

Radio frequency circuit, antenna device and electronic equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a radio frequency circuit, an antenna apparatus, and an electronic device.

Background

With the development of communication technology, more and more communication frequency bands can be supported by the mobile terminal. For example, an LTE (long term Evolution) communication signal may include a signal having a frequency between 700MHz and 2700 MHz.

Radio frequency signals that can be supported by a mobile terminal can be divided into low frequency signals, intermediate frequency signals, and high frequency signals. The low-frequency signal, the intermediate-frequency signal and the high-frequency signal respectively comprise a plurality of sub-frequency band signals. Each sub-band signal needs to be transmitted to the outside world via an antenna.

Thus, a Carrier Aggregation (CA) technique has been produced. Through carrier aggregation, a plurality of sub-frequency band signals can be aggregated together to improve the uplink and downlink transmission rate of the network.

Currently, the frequency resources of the various communication markets around the world are different from each other. Communication operators in different regions have different communication spectrum allocations, so that different frequency band combination requirements of carrier aggregation exist. However, the frequency band for aggregation in the current carrier aggregation is single, and the diversity is lacking, so that the above requirements cannot be met.

Disclosure of Invention

Embodiments of the present invention provide a radio frequency circuit, an antenna apparatus, and an electronic device, which can improve the diversity of carrier aggregation and non-carrier aggregation performed on a radio frequency signal by the electronic device.

The embodiment of the invention provides a radio frequency circuit, which comprises a radio frequency transceiver, a first switch, a second switch, a first antenna, a second antenna and a third antenna, wherein the first switch is connected with the first antenna;

the first switch is respectively connected with the radio frequency transceiver, the first antenna and the second antenna, the second switch is respectively connected with the radio frequency transceiver, the first antenna and the third antenna, and a high-frequency receiving port and an intermediate-frequency receiving port of the radio frequency transceiver are connected with the second antenna;

when the first switch connects the first antenna and a low-frequency transmitting port or a low-frequency receiving port of the radio frequency transceiver, the first antenna realizes the transmission or the reception of low-frequency signals;

when the second switch is connected with the first antenna and a high-frequency transmitting port or an intermediate-frequency transmitting port of the radio frequency transceiver, the first antenna realizes the transmission of high-frequency signals or intermediate-frequency signals;

when the first switch is connected with the first antenna and a low-frequency transmitting port of the radio frequency transceiver and the second switch is connected with a high-frequency transmitting port or an intermediate-frequency transmitting port of the first antenna and the radio frequency transceiver, the first antenna realizes carrier aggregation of high-frequency signals and low-frequency signals or carrier aggregation of intermediate-frequency signals and low-frequency signals;

when the first switch connects the second antenna with a low-frequency transmitting port or a low-frequency receiving port of the radio frequency transceiver, the second antenna realizes the transmission or the reception of low-frequency signals;

when the first switch is switched off and the second antenna is switched on, the second antenna realizes the reception of high-frequency signals and intermediate-frequency signals;

when the second switch is connected with the third antenna and a high-frequency transmitting port or an intermediate-frequency transmitting port of the radio-frequency transceiver, the third antenna realizes the transmission of high-frequency signals or intermediate-frequency signals.

The embodiment of the invention also provides an antenna device which comprises the radio frequency circuit.

The embodiment of the invention also provides electronic equipment which comprises a shell and a circuit board, wherein the circuit board is arranged in the shell, and the circuit board is provided with the radio frequency circuit.

The radio frequency circuit provided by the embodiment of the invention can realize the transmission and the reception of high-frequency signals, intermediate-frequency signals and low-frequency signals, can realize the carrier aggregation of the high-frequency signals and the low-frequency signals, and can also realize the carrier aggregation of the intermediate-frequency signals and the low-frequency signals, thereby improving the diversity of carrier aggregation and non-carrier aggregation of the radio frequency signals performed by electronic equipment.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a first structure of a radio frequency circuit according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of a second structure of the rf circuit according to the embodiment of the present invention.

Fig. 4 is a schematic diagram of a third structure of the rf circuit according to the embodiment of the present invention.

Fig. 5 is a schematic diagram of a fourth structure of the rf circuit according to the embodiment of the present invention.

Fig. 6 is another schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

The embodiment of the invention provides electronic equipment. The electronic device can be a smart phone, a tablet computer and the like. Referring to fig. 1, an electronic device 100 includes a cover plate 101, a display screen 102, a circuit board 103, and a housing 104.

Wherein the cover plate 101 is mounted to the display screen 102 to cover the display screen 102. The cover plate 101 may be a transparent glass cover plate. In some embodiments, the cover plate 101 may be a glass cover plate made of a material such as sapphire.

The display screen 102 is mounted on the housing 104 to form a display surface of the electronic device 100. The display screen 102 may include a display area 102A and a non-display area 102B. The display area 102A is used to display information such as images and texts. The non-display area 102B does not display information. The bottom of the non-display area 102B may be provided with functional elements such as a fingerprint module, a touch circuit, and the like.

The circuit board 103 is mounted inside the housing 104. The circuit board 103 may be a motherboard of the electronic device 100. Functional components such as a camera, a proximity sensor, and a processor may be integrated on the circuit board 103. Meanwhile, the display screen 102 may be electrically connected to the circuit board 103.

The housing 104 is used to form the outer contour of the electronic device 100. The housing 104 may be made of plastic or metal. The housing 104 may be integrally formed.

In some embodiments, Radio Frequency (RF) circuitry is disposed on the circuit board 103. The radio frequency circuit can communicate with a network device (e.g., a server, a base station, etc.) or other electronic devices (e.g., a smart phone, etc.) through a wireless network to complete information transceiving with the network device or other electronic devices.

In some embodiments, as shown in fig. 2, the rf circuit 200 includes the rf transceiver 21, the first switch 221, the second switch 222, the first antenna 231, the second antenna 232, the third antenna 233, and the combiner 241, the frequency divider 242, and the frequency divider 243. The first switch 221 is connected to the rf transceiver 21, the first antenna 231, and the second antenna 232, respectively, and the second switch 222 is connected to the rf transceiver 21, the first antenna 231, and the third antenna 233, respectively.

Wherein the radio frequency transceiver 21 includes a plurality of radio frequency transmitting ports and a plurality of radio frequency receiving ports. In some embodiments, as shown in fig. 2, the radio frequency transceiver 21 includes a high frequency transmit port TX1, an intermediate frequency transmit port TX2, a low frequency transmit port TX3, and a low frequency receive port RX1, a high frequency receive port RX2, an intermediate frequency receive port RX 3. The high-frequency transmitting port TX1, the intermediate-frequency transmitting port TX2 and the low-frequency transmitting port TX3 are respectively used for transmitting a high-frequency signal, an intermediate-frequency signal and a low-frequency signal. The low frequency receiving port RX1, the high frequency receiving port RX2 and the intermediate frequency receiving port RX3 are used for receiving low frequency signals, high frequency signals and intermediate frequency signals, respectively.

It should be noted that the high frequency rf signal, the intermediate frequency rf signal, and the low frequency rf signal are only relative concepts, and are not absolute frequency range differentiation.

In some embodiments, the first switch 221 includes a first input port a1, a second input port a2, and first and second output ports B1, B2. The second switch 222 includes a third input port A3, a fourth input port a4, and third and fourth output ports B3, B4.

The first input port a1 and the second input port a2 of the first switch 221 are respectively connected to the low frequency receiving port RX1 and the low frequency transmitting port TX3 of the radio frequency transceiver 21. The first output port B1 and the second output port B2 of the first switch 221 are connected to the first antenna 231 and the second antenna 232, respectively.

The third input port A3 and the fourth input port a4 of the second switch 222 are respectively connected to the high frequency transmitting port TX1 and the intermediate frequency transmitting port TX2 of the radio frequency transceiver 21. The third output port B3 and the fourth output port B4 of the second switch 222 are connected to the first antenna 231 and the third antenna 233, respectively.

In some embodiments, the first switch 221 and the second switch 222 are both double-pole double-throw switches. Each double pole double throw switch can be switched on one way or switched on two ways or switched off.

In some embodiments, as shown in fig. 2, rf circuit 200 further includes a combiner 241, a frequency divider 242, and a frequency divider 243.

The input end of the combiner 241 is connected to the first output port B1 of the first switch 221 and the third output port B3 of the second switch 222, respectively. The output terminal of the combiner 241 is connected to the first antenna 231. The combiner 241 is configured to perform carrier aggregation on the radio frequency signal transmitted by the radio frequency transceiver, and output the carrier aggregation signal to the first antenna 231.

The input of the frequency divider 242 is connected to the second antenna 232. The output terminal of the frequency divider 242 is connected to the second output port B2 of the first switch 221 and the input terminal of the frequency divider 243, respectively. The output terminal of the frequency divider 243 is connected to the high frequency receiving port RX2 and the intermediate frequency receiving port RX3 of the rf transceiver 21, respectively.

The above connection relation merely represents a direct or indirect connection relation between the components, and does not represent an electrically connected state between the components connected to each other.

When the first switch 221 turns on the first antenna 231 and the low frequency transmitting port TX3 or the low frequency receiving port RX1 of the radio frequency transceiver 21, the first antenna 231 enables transmission or reception of a low frequency signal;

when the second switch 222 turns on the first antenna 231 and the high frequency transmission port TX1 or the intermediate frequency transmission port TX2 of the radio frequency transceiver 21, the first antenna 231 enables transmission of a high frequency signal or an intermediate frequency signal;

when the first switch 221 turns on the first antenna 231 and the low frequency transmit port TX3 of the radio frequency transceiver 21 and the second switch 222 turns on the first antenna 231 and the high frequency transmit port TX1 or the medium frequency transmit port TX2 of the radio frequency transceiver 21, the first antenna 231 performs carrier aggregation of high frequency signals and low frequency signals or carrier aggregation of medium frequency signals and low frequency signals;

when the first switch 221 turns on the second antenna 232 and the low frequency transmitting port TX3 or the low frequency receiving port RX1 of the radio frequency transceiver 21, the second antenna 232 enables transmission or reception of low frequency signals;

when the first switch 221 is turned off and the second antenna 232 is turned on, the second antenna 232 receives a high-frequency signal and an intermediate-frequency signal;

when the second switch 222 turns on the third antenna 233 and the high frequency transmission port TX1 or the intermediate frequency transmission port TX2 of the radio frequency transceiver 21, the third antenna 233 enables transmission of a high frequency signal or an intermediate frequency signal.

The radio frequency circuit 200 of the invention can realize the transmission and reception of high frequency signals, intermediate frequency signals and low frequency signals, can realize the carrier aggregation of the high frequency signals and the low frequency signals, and can also realize the carrier aggregation of the intermediate frequency signals and the low frequency signals, thereby improving the diversity of carrier aggregation and non-carrier aggregation of the radio frequency signals performed by electronic equipment.

In some embodiments, as shown in fig. 2, the first switch 221 and the second switch 222 are packaged as the first chip 22A.

In some embodiments, as shown in fig. 3, the first switch 221, the second switch 222, and the combiner 241 are packaged into a second chip 22B.

In some embodiments, as shown in fig. 4, the first switch 221, the second switch 222, the combiner 241, and the frequency divider 242 are packaged into a third chip 22C.

In some embodiments, as shown in fig. 5, the high frequency transmit port TX1, the intermediate frequency transmit port TX2, and the low frequency transmit port TX3 of the radio frequency transceiver 21 each include a plurality of sub transmit ports, and the low frequency receive port RX1, the high frequency receive port RX2, and the intermediate frequency receive port RX3 each include a plurality of sub receive ports.

The rf circuit 200 further includes a plurality of gate switches 251 to 256. Wherein each gating switch is a single-pole multi-throw switch.

For example, the low frequency receiving port RX1 of the radio frequency transceiver 21 includes three sub receiving ports R1, R2, R3, the high frequency transmitting port TX1 includes three sub transmitting ports T1, T2, T3, the intermediate frequency transmitting port TX2 includes three sub transmitting ports T4, T5, T6, the low frequency transmitting port TX3 includes three sub transmitting ports T7, T8, T9, the high frequency receiving port RX2 includes three sub receiving ports R4, R5, R6, and the intermediate frequency receiving port RX3 includes three sub receiving ports R7, R8, R9.

The sub-transmitting ports T1, T2 and T3 are used for transmitting high-frequency radio frequency signals (for example, radio frequency signals in bands 7, 40 and 41), the sub-transmitting ports T4, T5 and T6 are used for transmitting intermediate-frequency radio frequency signals (for example, radio frequency signals in bands 1, 2 and 3), and the sub-transmitting ports T7, T8 and T9 are used for transmitting low-frequency radio frequency signals (for example, radio frequency signals in bands 8, 12 and 20).

The sub-receiving ports R1, R2, and R3 are configured to receive low-frequency radio frequency signals (e.g., radio frequency signals in bands 8, 12, 20, etc.), the sub-receiving ports R4, R5, and R6 are configured to receive high-frequency radio frequency signals (e.g., radio frequency signals in bands 7, 40, 41, etc.), and the sub-receiving ports R7, R8, and R9 are configured to receive intermediate-frequency radio frequency signals (e.g., radio frequency signals in bands 1, 2, 3, etc.).

The gate switches 251 to 256 each include three input ports and one output port.

Three input ports of the gate switch 251 are connected to the sub-receiving ports R1, R2, R3, respectively, and an output port of the gate switch 251 is connected to the first input port a1 of the first switch 221.

Three input ports of the gating switch 252 are connected to the sub-transmitting ports T1, T2, and T3, respectively, and an output port of the gating switch 252 is connected to the third input port A3 of the second switch 222.

Three input ports of the gate switch 253 are connected to the sub-transmission ports T4, T5, and T6, respectively, and an output port of the gate switch 253 is connected to the fourth input port a4 of the second switch 222.

The gate switch 254 has three input ports connected to the sub-transmitting ports T7, T8, and T9, respectively, and an output port connected to the second input port a2 of the first switch 221.

Three input ports of the gate switch 255 are connected to the sub-receiving ports R4, R5, and R6, respectively, and an output port of the gate switch 255 is connected to the frequency divider 243.

The gate switch 256 has three input ports connected to the sub-receiving ports R7, R8, and R9, respectively, and an output port connected to the frequency divider 243.

The first output port B1 and the second output port B2 of the first switch 221 are respectively connected to the input end of the combiner 241 and the output end of the frequency divider 242. The third output port B3 and the fourth output port B4 of the second switch 222 are connected to the input terminal of the combiner 241 and the third antenna 233, respectively. The output terminal of the combiner 241 is connected to the first antenna 231. Frequency divider 243 is connected to the output of frequency divider 242. The input of the frequency divider 242 is connected to the second antenna 232.

Referring to fig. 6, fig. 6 is another schematic structural diagram of the electronic device 100 according to the embodiment of the present invention. The electronic device 100 includes an antenna apparatus 10, a memory 20, a display unit 30, a power supply 40, and a processor 50. Those skilled in the art will appreciate that the configuration of the electronic device 100 shown in fig. 6 does not constitute a limitation of the electronic device 100. Electronic device 100 may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.

The antenna device 10 includes the rf circuit 200 described in any of the above embodiments. The antenna device 10 can communicate with a network device (e.g., a server) or other electronic devices (e.g., a smart phone) through a wireless network, and complete information transceiving with the network device or other electronic devices.

The memory 20 may be used to store applications and data. The memory 20 stores applications containing executable program code. The application programs may constitute various functional modules. The processor 50 executes various functional applications and data processing by running the application programs stored in the memory 20.

The display unit 30 may be used to display information input to the electronic apparatus 100 by a user or information provided to the user and various graphic user interfaces of the electronic apparatus 100. These graphical user interfaces may be made up of graphics, text, icons, video, and any combination thereof. The display unit 30 may include a display panel.

The power supply 40 is used to power the various components of the electronic device 100. In some embodiments, power supply 40 may be logically coupled to processor 50 through a power management system, such that functions to manage charging, discharging, and power consumption management are performed through the power management system.

The processor 50 is the control center of the electronic device 100. The processor 50 connects various parts of the entire electronic device 100 using various interfaces and lines, performs various functions of the electronic device 100 and processes data by running or executing an application program stored in the memory 20 and calling data stored in the memory 20, thereby monitoring the electronic device 100 as a whole.

In addition, the electronic device 100 may further include a camera module, a bluetooth module, and the like, which are not described herein again.

The radio frequency circuit, the antenna device and the electronic device provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by applying specific examples, and the above description of the embodiments is only used to help understanding the present invention. Meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (9)

1. A radio frequency circuit is characterized by comprising a radio frequency transceiver, a first switch, a second switch, a first antenna, a second antenna and a third antenna;
the first switch is respectively connected with the radio frequency transceiver, the first antenna and the second antenna, the second switch is respectively connected with the radio frequency transceiver, the first antenna and the third antenna, and a high-frequency receiving port and an intermediate-frequency receiving port of the radio frequency transceiver are connected with the second antenna;
the first switch comprises a first input port, a second input port, a first output port and a second output port, the first input port and the second input port are respectively connected with a low-frequency receiving port and a low-frequency transmitting port of the radio frequency transceiver, and the first output port and the second output port are respectively connected with the first antenna and the second antenna;
the second switch comprises a third input port, a fourth input port, a third output port and a fourth output port, the third input port and the fourth input port are respectively connected with a high-frequency transmitting port and an intermediate-frequency transmitting port of the radio frequency transceiver, and the third output port and the fourth output port are respectively connected with the first antenna and the third antenna;
when the first switch connects the first antenna and a low-frequency transmitting port or a low-frequency receiving port of the radio frequency transceiver, the first antenna realizes the transmission or the reception of low-frequency signals;
when the second switch is connected with the first antenna and a high-frequency transmitting port or an intermediate-frequency transmitting port of the radio frequency transceiver, the first antenna realizes the transmission of high-frequency signals or intermediate-frequency signals;
when the first switch is connected with the first antenna and a low-frequency transmitting port of the radio frequency transceiver and the second switch is connected with a high-frequency transmitting port or an intermediate-frequency transmitting port of the first antenna and the radio frequency transceiver, the first antenna realizes carrier aggregation of high-frequency signals and low-frequency signals or carrier aggregation of intermediate-frequency signals and low-frequency signals;
when the first switch connects the second antenna with a low-frequency transmitting port or a low-frequency receiving port of the radio frequency transceiver, the second antenna realizes the transmission or the reception of low-frequency signals;
when the first switch is switched off and the second antenna is switched on, the second antenna realizes the reception of high-frequency signals and intermediate-frequency signals;
when the second switch is connected with the third antenna and a high-frequency transmitting port or an intermediate-frequency transmitting port of the radio-frequency transceiver, the third antenna realizes the transmission of high-frequency signals or intermediate-frequency signals.
2. The radio frequency circuit of claim 1, wherein the first switch and the second switch are packaged as a first chip.
3. The radio frequency circuit of claim 1, wherein the first switch and the second switch are both double-pole double-throw switches.
4. The rf circuit of claim 1, further comprising a combiner, wherein an input terminal of the combiner is connected to the first output port of the first switch and the third output port of the second switch, respectively, and an output terminal of the combiner is connected to the first antenna.
5. The RF circuit of claim 4, wherein the first switch, the second switch, and the combiner are packaged as a second chip.
6. The RF circuit of claim 4, further comprising a frequency divider, wherein an input of the frequency divider is connected to the second antenna, and an output of the frequency divider is connected to the second output port of the first switch, the high frequency receive port of the RF transceiver, and the intermediate frequency receive port of the RF transceiver, respectively.
7. The RF circuit of claim 6, wherein the first switch, the second switch, the combiner, and the divider are packaged as a third chip.
8. An antenna arrangement, characterized in that the antenna arrangement comprises a radio frequency circuit according to any of claims 1 to 7.
9. An electronic device, comprising a housing and a circuit board, wherein the circuit board is mounted inside the housing, and a radio frequency circuit is disposed on the circuit board, and the radio frequency circuit is the radio frequency circuit according to any one of claims 1 to 7.
CN201710612955.6A 2017-07-25 2017-07-25 Radio frequency circuit, antenna device and electronic equipment CN107483060B (en)

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CN111162802A (en) * 2019-12-31 2020-05-15 联想(北京)有限公司 Electronic equipment and signal transmission method

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