CN108880571B

CN108880571B - Radio frequency circuit and electronic equipment

Info

Publication number: CN108880571B
Application number: CN201810497051.8A
Authority: CN
Inventors: 姚坤
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-05-22
Filing date: 2018-05-22
Publication date: 2020-05-08
Anticipated expiration: 2038-05-22
Also published as: CN108880571A

Abstract

The embodiment of the application provides a radio frequency circuit and electronic equipment, wherein the radio frequency circuit comprises a radio frequency transceiving module, a first filter element, a second filter element, a change-over switch, a radio frequency switch and an antenna. In the radio frequency circuit provided by the embodiment of the application, when the first radio frequency signal and the second radio frequency signal received and transmitted by the radio frequency transceiver module include signal components with the same frequency, filtering is performed through filtering elements in different signal paths, so that not only can the carrier aggregation of the first radio frequency signal and the second radio frequency signal be realized, but also mutual interference between the first radio frequency signal and the second radio frequency signal can be avoided, and meanwhile, the non-carrier aggregation of the first radio frequency signal or the second radio frequency signal can be realized, thereby improving the diversity of carrier aggregation or non-carrier aggregation of the radio frequency signals performed by electronic equipment.

Description

Radio frequency circuit and electronic equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a radio frequency circuit 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

The embodiment of the application provides a radio frequency circuit and an electronic device, which can improve the diversity of carrier aggregation and non-carrier aggregation of radio frequency signals performed by the electronic device.

An embodiment of the present application provides a radio frequency circuit, including:

the radio frequency transceiving module is used for transceiving a first radio frequency signal and a second radio frequency signal, wherein the frequency range of the first radio frequency signal comprises a first frequency band, and the frequency range of the second radio frequency signal comprises a second frequency band;

a first filtering element coupled to the rf transceiver module, wherein the first filtering element is configured to filter a first spurious signal in the first rf signal, and a frequency range of the first spurious signal includes the second frequency band;

a second filtering element coupled to the rf transceiver module, wherein the second filtering element is configured to filter a second spurious signal in the second rf signal, and a frequency range of the second spurious signal includes the first frequency band;

the change-over switch is respectively coupled with the radio frequency transceiving module and the second filtering element and is used for selectively switching on the radio frequency transceiving module or the second filtering element;

the radio frequency switch is respectively coupled with the first filtering element and the change-over switch, and the radio frequency switch is used for realizing carrier aggregation or non-carrier aggregation of the first radio frequency signal and the second radio frequency signal;

an antenna coupled with the radio frequency switch.

The embodiment of the application further provides an electronic device, which comprises a shell and a circuit board arranged inside the shell, wherein a radio frequency circuit is arranged on the circuit board, and the radio frequency circuit is the radio frequency circuit.

In the radio frequency circuit provided by the embodiment of the application, when the first radio frequency signal and the second radio frequency signal received and transmitted by the radio frequency transceiver module include signal components with the same frequency, filtering is performed through filtering elements in different signal paths, so that not only can the carrier aggregation of the first radio frequency signal and the second radio frequency signal be realized, but also mutual interference between the first radio frequency signal and the second radio frequency signal can be avoided, and meanwhile, the non-carrier aggregation of the first radio frequency signal or the second radio frequency signal can be realized, thereby improving the diversity of carrier aggregation or 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 application, 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 application, 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 application.

Fig. 2 is another schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 3 is an exploded schematic view of an electronic device according to an embodiment of the present application.

Fig. 4 is a schematic structural diagram of a radio frequency circuit according to an embodiment of the present application.

Fig. 5 is another schematic structural diagram of a radio frequency circuit according to an embodiment of the present disclosure.

Fig. 6 is a schematic structural diagram of a radio frequency circuit according to an embodiment of the present application.

Fig. 7 is a schematic view of a scenario when a B7 frequency band radio frequency signal is transmitted in the embodiment of the present application.

Fig. 8 is a schematic view of a scenario when a B41 frequency band radio frequency signal is transmitted in the embodiment of the present application.

Fig. 9 is a schematic diagram of another structure of a radio frequency circuit according to an embodiment of the present application.

Fig. 10 is a schematic diagram of still another structure of the rf circuit according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. 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 application.

In the description of the present application, 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 are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. 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 application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to 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 meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. 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 application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application 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, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The embodiment of the application provides electronic equipment. The electronic device may be a smart phone, a tablet computer, or other devices, or may be a game device, an AR (Augmented Reality) device, an automobile, a data storage device, an audio playing device, a video playing device, a notebook, a desktop computing device, or other devices, or may be a wearable device such as an electronic watch, an electronic glasses, an electronic helmet, an electronic bracelet, an electronic necklace, an electronic garment, or other devices.

In some embodiments, referring to fig. 1 and 3, the electronic device 100 includes a display screen 11, a middle frame 12, a circuit board 13, a battery 14, and a rear cover 15.

Wherein the display screen 11 is mounted on the back cover 15 to form a display surface of the electronic device 100. The display screen 11 serves as a front case of the electronic device 100, and forms a housing of the electronic device 100 together with the rear cover 15 for accommodating other electronic elements or functional components of the electronic device 100. Meanwhile, the display screen 11 forms a display surface of the electronic apparatus 100 for displaying information such as images, texts, and the like. The Display screen 11 may be a Liquid Crystal Display (LCD) or an Organic Light-Emitting Diode (OLED) Display screen.

In some embodiments, a glass cover plate may be disposed over the display screen 11. The glass cover plate may cover the display screen 11 to protect the display screen 11 and prevent the display screen 11 from being scratched or damaged by water.

In some embodiments, as shown in FIG. 1, the display screen 11 may include a display area 111 and a non-display area 112. The display area 111 performs a display function of the display screen 11 for displaying information such as images and texts. The non-display area 112 may be used to set up functional elements such as a distance sensor, a receiver, and a touch electrode of a display screen. In some embodiments, the non-display area 112 may include at least one area located above and below the display area 111.

In some embodiments, as shown in FIG. 2, the display screen 11 may be a full-face screen. At this time, the display screen 11 may display information in a full screen, so that the electronic apparatus 100 has a large screen occupation ratio. The display screen 11 includes only the display region 111 and does not include the non-display region, or the area of the non-display region is small. In this case, functional components such as a distance sensor and an ambient light sensor in the electronic device 100 may be hidden under the display screen 11, and the fingerprint recognition module of the electronic device 100 may be disposed on the back of the electronic device 100.

The middle frame 12 may have a thin plate-like or sheet-like structure, or may have a hollow frame structure. The middle frame 12 may be accommodated in a housing formed by the display panel 11 and the rear cover 15. The middle frame 12 is used for providing a supporting function for the electronic components or functional modules in the electronic device 100, so as to mount the electronic components or functional modules in the electronic device together. For example, functional components such as a receiver, a circuit board, and a battery in the electronic apparatus may be mounted on the center frame 12 for fixing. In some embodiments, the material of the middle frame 12 may include metal or plastic.

The circuit board 13 is mounted inside the housing of the electronic device 100. The circuit board 13 may be a main board of the electronic device 100. The circuit board 13 is provided with a grounding point to realize grounding of the circuit board 13. The circuit board 13 has processing circuitry integrated thereon. The processing circuit is used for processing applications and data in the electronic device 100. One, two or more of the functional components such as a motor, a microphone, a speaker, a receiver, an earphone interface, a universal serial bus interface (USB interface), a distance sensor, an ambient light sensor, a gyroscope, etc. may also be integrated on the circuit board 13. Meanwhile, the display screen 11 may be electrically connected to the circuit board 13.

The battery 14 is mounted inside the housing of the electronic device 100. Wherein, the battery 14 can be electrically connected to the circuit board 13 to enable the battery 14 to supply power to the electronic device 100. Wherein, the circuit board 13 may be provided with a power management circuit. The power management circuit is used to distribute the voltage provided by battery 14 to the various electronic components in electronic device 100.

The rear cover 15 is used to form an outer contour of the electronic apparatus 100. The rear cover 15 may be integrally formed. In the forming process of the rear cover 15, structures such as a rear camera hole and a fingerprint identification module mounting hole can be formed on the rear cover 15.

In the embodiment of the present application, a Radio Frequency (RF) circuit is disposed on the circuit board 13. 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. 4, the rf circuit 20 includes an rf transceiver module 21, a first filter element 22, a second filter element 23, an rf switch 24, and an antenna 25.

The radio frequency transceiver module 21 is configured to transmit and receive radio frequency signals. The rf transceiver module 21 may be provided with one or more rf transmitting ports and one or more rf receiving ports. Each radio frequency transmitting port is used for transmitting a radio frequency signal of a frequency band or transmitting and receiving a radio frequency signal of a frequency band. Each radio frequency receiving port is used for receiving radio frequency signals of one frequency band.

In the embodiment of the present application, the radio frequency transceiver module 21 is configured to transceive a first radio frequency signal and a second radio frequency signal. Wherein the frequency range of the first radio frequency signal comprises a first frequency band, and the frequency range of the second radio frequency signal comprises a second frequency band. The first frequency band and the second frequency band are different frequency bands.

It should be noted that, when the radio frequency transceiver module 21 transmits the radio frequency signal, the radio frequency signal may be transmitted in a Frequency Division Duplex (FDD) mode, or may be transmitted in a Time Division Duplex (TDD) mode. In the FDD mode, two independent channels are used for transmitting uplink signals and receiving downlink signals respectively, and the two channels use different frequencies, so that the uplink signals and the downlink signals can be ensured not to interfere with each other. In the TDD mode, the same channel is used for sending uplink signals and receiving downlink signals in different time slots, and the uplink signals and the downlink signals are ensured not to be interfered with each other through the different time slots.

In addition, it should be noted that when the rf transceiver module 21 transmits rf signals, spurious signals are inevitably generated in addition to the rf signals in the frequency band required for communication. The spurious signal is a radio frequency signal which does not have a positive effect on the current communication frequency band. The spurious signals may cause interference with radio frequency signals in other communication bands of the electronic device.

Therefore, the first rf signal transmitted by the rf transceiver module 21 may include rf signals of other frequencies besides the rf signal of the first frequency band. The second rf signal transmitted by the rf transceiver module 21 may also include rf signals in other frequency ranges besides the rf signal in the second frequency band.

The first filtering element 22 is coupled to the radio frequency transceiver module 21. The first filter element 22 is used for filtering. In the embodiment of the present application, the first filtering element 22 is configured to filter out a first spurious signal in the first radio frequency signal. Wherein the frequency range of the first spurious signal includes the second frequency band. That is, the first filter element 22 can filter out spurious signals in the first rf signal in the second frequency band.

The second filter element 23 is coupled to the radio frequency transceiver module 21. The second filter element 23 is used for filtering. In the embodiment of the present application, the second filtering element 23 is configured to filter out a second spurious signal in the second radio frequency signal. Wherein the frequency range of the second spurious signal includes the first frequency band. That is, the second filtering element 23 may filter out spurious signals in the second rf signal, which have a frequency range of the first frequency band.

The radio frequency switch 24 is coupled to the first filter element 22 and the second filter element 23 respectively. The rf switch 24 may simultaneously turn on the first filter element 22 and the second filter element 23. Thus, the rf switch 24 may implement carrier aggregation of the first rf signal and the second rf signal.

An antenna 25 is coupled to the radio frequency switch. The antenna 25 is configured to transmit the signal obtained by carrier aggregation of the first radio frequency signal and the second radio frequency signal to the outside, and receive a radio frequency signal from the outside.

Therefore, the radio frequency transceiver module 21, the first filter element 22, the radio frequency switch 24, and the antenna 25 form a first signal path, and can implement the transceiving of the first radio frequency signal. The rf transceiver module 21, the second filter element 23, the rf switch 24, and the antenna 25 form a second signal path, which can implement transceiving of the second rf signal.

In the embodiment of the application, when the first radio frequency signal and the second radio frequency signal received and transmitted by the radio frequency receiving and transmitting module include signal components with the same frequency, filtering is performed through filtering elements in different signal paths respectively, so that carrier aggregation of the first radio frequency signal and the second radio frequency signal can be realized, and diversity of carrier aggregation performed on the radio frequency signals by electronic equipment can be improved.

In some embodiments, as shown in fig. 5, the rf transceiver module 21 includes a first port 211 and a second port 212.

The first port 211 is configured to receive and transmit the first radio frequency signal. Wherein the first port 211 may include two sub-ports. When the radio frequency transceiver module 21 is configured to transceive the first radio frequency signal in FDD mode, one of the sub-ports is configured to transmit the first radio frequency signal, and the other sub-port is configured to receive the first radio frequency signal.

The second port 212 is used for transceiving the second radio frequency signal. The second port 212 may also include two sub-ports. When the radio frequency transceiver module 21 is configured to transceive the second radio frequency signal in the FDD mode, one of the sub-ports is configured to transmit the second radio frequency signal, and the other sub-port is configured to receive the second radio frequency signal.

The first filtering element 22 is coupled to the first port 211 of the rf transceiver module 21. The first filtering element 22 filters the first radio frequency signal transmitted by the first port 211. The second filter element 23 is coupled to the second port 212 of the radio frequency transceiver module 21. The second filtering element 23 filters the second radio frequency signal transmitted by the second port 212.

In some embodiments, as shown in fig. 5, the rf switch 24 includes a first input port 241, a second input port 242, and a first output port 243. Wherein the first input port 241 is coupled to the first filter element 22, the second input port 242 is coupled to the second filter element 23, and the first output port 243 is coupled to the antenna 25. The rf switch 24 may simultaneously turn on the first input port 241 and the first output port 243 and the second input port 242 and the first output port 243, so as to implement carrier aggregation of the first rf signal and the second rf signal.

In some embodiments, the first filtering element 22 comprises a first trap. Said second filter element 23 comprises a second wave trap.

In some embodiments, the radio frequency transceiver module 21 may transmit and receive the first radio frequency signal in a Frequency Division Duplex (FDD) mode. That is, the frequency of the radio frequency transceiver module 21 transmitting the first radio frequency signal is different from the frequency of receiving the first radio frequency signal.

Wherein the frequency range of the first radio frequency signal further comprises a third frequency band. The highest frequency of the third frequency band is less than the lowest frequency of the first frequency band. That is, the frequency range of the third frequency band does not overlap with the frequency range of the first frequency band.

The radio frequency transceiver module 21 transmits the radio frequency signal of the third frequency band and receives the radio frequency signal of the first frequency band in a Frequency Division Duplex (FDD) mode.

In some embodiments, the first radio frequency signal is a radio frequency signal in a B7(Band 7) frequency Band. The frequency range of the first radio frequency signal includes the first frequency band and a third frequency band. Wherein the third frequency band comprises 2500MHz to 2570MHz, and the first frequency band comprises 2620MHz to 2690 MHz. That is, when the rf transceiver module 21 transmits the first rf signal, the frequency range of the transmitted rf signal includes 2500MHz to 2570 MHz. When the radio frequency transceiver module 21 receives the first radio frequency signal, the frequency range of the received radio frequency signal includes 2620MHz to 2690 MHz.

It should be noted that, when the radio frequency transceiver module 21 transmits the first radio frequency signal, the transmitted radio frequency signal may further include signals of other frequencies, for example, a radio frequency signal with a frequency greater than 2570MHz may also be included.

In some embodiments, as shown in fig. 6, the radio frequency circuit 20 further includes a third filter element 26. The third filter element 26 is connected to the rf transceiver module 21 and the first filter element 22, respectively. At this time, the first filter element 22 is coupled to the rf transceiver module 21 through the third filter element 26.

Wherein, the third filtering element 26 is also used for filtering the first radio frequency signal transmitted by the radio frequency transceiver module 21. For example, the third filtering element 26 may also be configured to filter the first spurious signal in the first radio frequency signal. In this case, the third filter element 26 and the first filter element 22 filter the first radio frequency signal at the same time, so that the filtering effect can be improved.

In some embodiments, the suppression effect of third filtering element 26 on the first spurious signal in the first radio frequency signal may be up to 30dBm, and the suppression effect of first filtering element 22 on the first spurious signal in the first radio frequency signal may be up to 70 dBm. Therefore, when the third filter element 26 and the first filter element 22 filter simultaneously, the effect of suppressing the first spurious signal in the first radio frequency signal can be up to 100 dBm. Wherein the frequency range of the first spurious signal includes the second frequency band.

In some embodiments, the third filtering element 26 comprises a duplexer.

In some embodiments, the radio frequency transceiving module 21 transceives the second radio frequency signal through a Time Division Duplex (TDD) mode. That is, the rf transceiver module 21 respectively transmits the second rf signal and receives the second rf signal in different time slots.

In some embodiments, the second rf signal is a B41(Band 41) Band rf signal. It should be noted that, in the embodiment of the present application, the frequency range of the B41 frequency band is redefined. Wherein the B41 frequency band includes a second frequency band. The frequency range of the second frequency band includes 2570MHz to 2620 MHz. That is, the frequency range when the rf transceiver module 21 transmits the second rf signal includes 2570MHz to 2620MHz, and the frequency range when the rf transceiver module 21 receives the second rf signal also includes 2570MHz to 2620 MHz.

It should be noted that, when the radio frequency transceiver module 21 transmits the second radio frequency signal, the transmitted radio frequency signal may further include signals with other frequencies, for example, a radio frequency signal with a frequency greater than 2620MHz may also be included.

In some embodiments, as shown in fig. 6, the radio frequency circuit 20 further comprises a fourth filter element 27. The fourth filter element 27 is connected to the rf transceiver module 21 and the second filter element 23, respectively. At this time, the second filter element 23 is coupled to the rf transceiver module 21 through the fourth filter element 27.

Wherein, the fourth filtering element 27 is also used for filtering the second radio frequency signal transmitted by the radio frequency transceiver module 21. For example, the fourth filtering element 27 may also be configured to filter the second spurious signal in the second radio frequency signal. In this case, the fourth filter element 27 and the second filter element 23 filter the second rf signal at the same time, so that the filtering effect can be improved.

In some embodiments, the suppression effect of the fourth filtering element 27 on the second spurious signal in the second radio frequency signal may be up to 30dBm, and the suppression effect of the second filtering element 23 on the first spurious signal in the second radio frequency signal may be up to 70 dBm. Therefore, when the fourth filter element 27 and the second filter element 23 filter simultaneously, the effect of suppressing the second spurious signal in the second radio frequency signal can reach 100 dBm. Wherein the frequency range of the second spurious signal includes the first frequency band.

In some embodiments, the fourth filtering element 27 comprises a filter.

In some embodiments, referring to fig. 7 and 8, the first port 211 of the rf transceiver module 21 is configured to transceive rf signals in the B7 frequency band. The frequency range of the radio frequency signal transmitted by the first port 211 includes 2500MHz-2570MHz, and the frequency range of the received radio frequency signal includes 2620MHz-2690 MHz. The second port 212 of the rf transceiver module 21 is used for transceiving rf signals in the B41 frequency band. The frequency range of the radio frequency signal transmitted by the second port 212 includes 2570MHz-2620MHz, and the frequency range of the received radio frequency signal also includes 2570MHz-2620 MHz.

When the first port 211 transmits a radio frequency signal in the B7 frequency band, the frequency range of the transmitted radio frequency signal includes 2500MHz-2570MHz, and the frequency range of the transmitted radio frequency signal includes spurious signals in the 2570MHz-2620MHz range. When the duplexer 26 carries out filtering, the effect of suppressing the stray signals of 2570MHz-2620MHz can reach 30 dBm. When the first trap 22 is used for filtering, the effect of suppressing the stray signals of 2570MHz-2620MHz can reach 70 dBm. Therefore, the signal strength of the 2570MHz-2620MHz stray signal is below-100 dBm in the RF signal finally emitted to the outside. At this time, the signal strength of the 2570MHz-2620MHz stray signal is small, and will not cause interference on the reception of the radio frequency signal in the B41 frequency band by the second port 212, or cause little interference on the reception of the radio frequency signal in the B41 frequency band.

When the second port 212 transmits the radio frequency signal in the B41 frequency band, the frequency range of the transmitted radio frequency signal includes 2570MHz-2620MHz, and the frequency range of the transmitted radio frequency signal includes a stray signal in 2620MHz-2690 MHz. When the filter 27 performs filtering, the suppression effect on the stray signals of 2620MHz to 2690MHz can reach 30 dBm. When the second trap 23 is used for filtering, the suppression effect on the stray signals from 2620MHz to 2690MHz can reach 70 dBm. Therefore, the signal intensity of the stray signal of 2620MHz-2690MHz is below-100 dBm in the radio frequency signal finally emitted to the outside. At this time, the signal strength of the stray signal of 2620MHz-2690MHz is small, and it will not cause interference to the first port receiving the radio frequency signal of B7 frequency band, or cause little interference to the receiving of the radio frequency signal of B7 frequency band.

Therefore, in the embodiment of the present application, when the first radio frequency signal and the second radio frequency signal received and transmitted by the radio frequency transceiver module include signal components with the same frequency, the first radio frequency signal and the second radio frequency signal are filtered through the filtering elements in different signal paths, so that not only can carrier aggregation of the first radio frequency signal and the second radio frequency signal be achieved, but also mutual interference between the first radio frequency signal and the second radio frequency signal can be avoided, and thus diversity of carrier aggregation performed on the radio frequency signals by the electronic device can be improved.

In some embodiments, as shown in fig. 9, the radio frequency circuit 20 further includes a switch 28. The switch 28 is coupled to the rf transceiver module 21 and the second filter element 23, respectively. The switch 28 is used to selectively turn on the rf transceiver module 21 or the second filtering element 23. In this embodiment, the rf switch 24 is coupled to the switch 28, so as to couple to the second filtering element 23 and to couple to the rf transceiver module 21.

In the embodiment of the present application, the rf switch 24 may simultaneously turn on the first filtering element 22 and the switch 28, or only turn on the first filtering element 22, or only turn on the switch 28.

When the switch 28 turns on the second filtering element 23 and the rf switch 24 turns on the first filtering element 22 and the switch 28 at the same time, the rf switch 24 implements carrier aggregation of the first rf signal and the second rf signal.

When the rf switch 24 only turns on the first filtering element 22, the rf switch 24 implements non-carrier aggregation of the first rf signal.

When the switch 28 turns on the rf transceiver module 21 and turns off the second filtering element 23, and the rf switch 24 only turns on the switch 28, the rf switch 24 implements non-carrier aggregation of the second rf signal.

In some embodiments, when the rf transceiver module 21 includes the first port 211 and the second port 212, the switch 28 is coupled to the second port 212 of the rf transceiver module 21, as shown in fig. 9.

In some embodiments, when the rf switch 24 includes a first input port 241, a second input port 242, and a first output port 243, the second input port 242 is coupled to the switch 28, as shown in fig. 9.

In some embodiments, as shown in fig. 9, the switch 28 includes a third input port 281, a fourth input port 282, and a second output port 283. Wherein the third input port 281 is coupled with the radio frequency transceiving module 21. The fourth input port 282 is coupled with the second filter element 23. The second output port 283 is coupled with the radio frequency switch 24.

Specifically, the third input port 281 is coupled to the second port 212 of the rf transceiver module 21. The fourth input port 282 is coupled with the second filter element 23. The second output port 283 is coupled with the second input port 242 of the radio frequency switch 24.

In some embodiments, the diverter switch 28 comprises a single pole double throw switch.

In some embodiments, as shown in fig. 10, the radio frequency circuit 20 further comprises a fifth filter element 29. The fifth filter element 29 is connected to the rf transceiver module 21 and the switch 28, respectively. Thus, the switch 28 is coupled to the rf transceiver module 21 through the fifth filter element 29.

The fifth filtering element 29 is configured to filter the second radio frequency signal received and transmitted by the radio frequency transceiver module 21, so as to filter a spurious signal in the second radio frequency signal.

In some embodiments, the fifth filter element 29 comprises a filter.

In the embodiment of the application, when the first radio frequency signal and the second radio frequency signal received and transmitted by the radio frequency transceiver module include signal components with the same frequency, the first radio frequency signal and the second radio frequency signal are filtered by the filter elements in different signal paths, so that not only can the carrier aggregation of the first radio frequency signal and the second radio frequency signal be realized, but also the mutual interference between the first radio frequency signal and the second radio frequency signal can be avoided, and meanwhile, the non-carrier aggregation of the first radio frequency signal or the second radio frequency signal can be realized, thereby improving the diversity of carrier aggregation or non-carrier aggregation of the radio frequency signals performed by the electronic device.

The radio frequency circuit and the electronic device provided by the embodiment of the application are described in detail above. The principles and implementations of the present application are described herein using specific examples, which are presented only to aid in understanding the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, 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 application.

Claims

1. A radio frequency circuit, comprising:

the radio frequency switch is respectively coupled with the first filtering element and the selector switch;

an antenna coupled with the radio frequency switch;

the third filtering element is respectively connected with the radio frequency transceiver module and the first filtering element and is used for filtering a first radio frequency signal transmitted by the radio frequency transceiver module, and the first filtering element is coupled with the radio frequency transceiver module through the third filtering element;

the fourth filtering element is respectively connected with the radio frequency transceiver module and the second filtering element and is used for filtering a second radio frequency signal transmitted by the radio frequency transceiver module, and the second filtering element is coupled with the radio frequency transceiver module through the fourth filtering element;

the first radio frequency signal is a radio frequency signal in a Band 7 frequency Band, the second radio frequency signal is a radio frequency signal in a Band41 frequency Band, the frequency range of the first radio frequency signal comprises a first frequency Band and a third frequency Band, the frequency range of the second radio frequency signal comprises a second frequency Band, the first frequency Band comprises 2620MHz to 2690MHz, the frequency range of the second frequency Band comprises 2570MHz to 2620MHz, the third frequency Band comprises 2500MHz to 2570MHz, and the radio frequency switch is used for realizing carrier aggregation or non-carrier aggregation of the radio frequency signals in the Band 7 and the Band41 frequency bands.

2. The RF circuit of claim 1, wherein the RF transceiver module comprises a first port and a second port, the first port is configured to transceive the first RF signal, and the second port is configured to transceive the second RF signal;

the first filter element is coupled to the first port of the radio frequency transceiver module, the second filter element is coupled to the second port of the radio frequency transceiver module, and the switch is coupled to the second port of the radio frequency transceiver module.

3. The radio frequency circuit of claim 1, wherein the radio frequency switch comprises a first input port, a second input port, and a first output port;

the first input port is coupled to the first filtering element, the second input port is coupled to the switch, and the first output port is coupled to the antenna.

4. The radio frequency circuit of claim 1, wherein the switch includes a third input port, a fourth input port, and a second output port;

the third input port is coupled to the rf transceiver module, the fourth input port is coupled to the second filter element, and the second output port is coupled to the rf switch.

5. The radio frequency circuit according to any of claims 1 to 4, wherein the first filter element comprises a first trap and the second filter element comprises a second trap.

6. The RF circuit according to any of claims 1 to 4, wherein the RF transceiving module is configured to transceive the first RF signal via a frequency division duplex mode.

7. The RF circuit of claim 6, wherein the RF transceiver module transmits the RF signals of the third frequency band and receives the RF signals of the first frequency band via frequency division duplex mode.

8. The radio frequency circuit of claim 6, wherein the third filtering element comprises a duplexer.

9. The RF circuit according to any of claims 1 to 4, wherein the RF transceiving module is configured to transceive the second RF signal via a time division duplex mode.

10. The radio frequency circuit according to claim 9, further comprising a fifth filter element, wherein the fifth filter element is respectively connected to the radio frequency transceiver module and the switch.

11. An electronic device comprising a housing and a circuit board mounted inside the housing, the circuit board having a radio frequency circuit disposed thereon, the radio frequency circuit being as claimed in any one of claims 1 to 10.