CN111181590B - Radio frequency control circuit and electronic equipment - Google Patents
Radio frequency control circuit and electronic equipment Download PDFInfo
- Publication number
- CN111181590B CN111181590B CN202010015307.4A CN202010015307A CN111181590B CN 111181590 B CN111181590 B CN 111181590B CN 202010015307 A CN202010015307 A CN 202010015307A CN 111181590 B CN111181590 B CN 111181590B
- Authority
- CN
- China
- Prior art keywords
- link
- selection switch
- radio frequency
- wireless fidelity
- control circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details 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
- H04B1/38—Transceivers, 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
- H04B1/40—Circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details 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
- H04B1/005—Details 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details 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
- H04B1/38—Transceivers, 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
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details 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
- H04B1/38—Transceivers, 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
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
- H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
- H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
Abstract
The embodiment of the invention provides a radio frequency control circuit and electronic equipment. The radio frequency control circuit includes: the device comprises a baseband controller, a wireless fidelity link and a harmonic attenuation module; the wireless fidelity link comprises a receiving sublink, a transmitting sublink and a first selection switch, wherein the receiving sublink and the transmitting sublink are respectively connected with a first end of the first selection switch; the harmonic attenuation module is connected with the wireless fidelity link; the harmonic attenuation module and the wireless fidelity link are respectively connected with the baseband controller, and the baseband controller is used for controlling the harmonic attenuation module to be connected with or disconnected from the wireless fidelity link according to the on-off state of the first selection switch and the transmitting sub-link, wherein the transmitting sub-link is used for transmitting the radio-frequency signal generated by the baseband controller, and the harmonic attenuation module is used for attenuating the second harmonic in the radio-frequency signal. In the embodiment of the invention, the wireless fidelity link and the 5G link can work together without reducing the frequency of the 5G link, thereby improving the user experience.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a radio frequency control circuit and an electronic device.
Background
With the development of communication technology, the frequency of radio frequency devices in electronic equipment, which needs to perform radio frequency communication, is higher and higher, and when performing radio frequency communication, different radio frequency signals are often easily interfered with each other. For example, when a Wireless-Fidelity (Wi-Fi) 2.4G link in an electronic device transmits a radio frequency signal through a nonlinear device such as a power amplifier, a second harmonic is easily generated, the frequency band of the second harmonic is 4804-4964MHz, the frequency band of a 5G link in the electronic device includes a sub-band n79, and the frequency band of the sub-band n79 is 4400-5000 MHz. At this time, the frequency band of the second harmonic generated by the wireless fidelity 2.4G link falls into the frequency band of the sub-frequency band n79, which affects the 5G link and further affects the user experience.
In the related art, to avoid mutual interference between different rf signals, one of the rf devices that transmits the rf signal is usually turned off, or the frequency of one of the rf signals is reduced to reduce the interference. For example, in order to reduce the influence of the second harmonic generated when the wifi 2.4G link transmits the radio frequency signal on the 5G link, the wifi 2.4G link or the 5G link is turned off, which may cause that the wifi 2.4G link and the 5G link cannot work together, so that the user experience is poor. Alternatively, the frequency of the 5G link is reduced so that the wifi 2.4G link and the 5G link can coexist, but this causes a waste of spectrum resources and a reduction in user experience.
Disclosure of Invention
In view of this, embodiments of the present invention provide a radio frequency control circuit and an electronic device, which can solve the problem in the related art that a wifi 2.4G link and a wifi 5G link cannot coexist or user experience is poor when the two coexist.
In a first aspect, an embodiment of the present invention provides a radio frequency control circuit, where the radio frequency control circuit includes: the device comprises a baseband controller, a wireless fidelity link and a harmonic attenuation module; wherein the content of the first and second substances,
the wireless fidelity link comprises a receiving sub-link, a transmitting sub-link and a first selection switch, wherein the receiving sub-link and the transmitting sub-link are respectively connected with a first end of the first selection switch;
the harmonic attenuation module is connected with the wireless fidelity link;
the harmonic attenuation module and the wireless fidelity link are respectively connected with the baseband controller, and the baseband controller is used for controlling the harmonic attenuation module and the wireless fidelity link to be connected or disconnected according to the on-off state of the first selection switch and the transmitting sub-link.
In a second aspect, an embodiment of the present invention provides an electronic device, where the electronic device includes the radio frequency control circuit described in the first aspect.
The technical scheme provided by the invention at least has the following beneficial effects:
in the invention, the wireless fidelity link comprises a receiving sublink, a transmitting sublink and a first selection switch, and the receiving sublink and the transmitting sublink are respectively connected with the first end of the first selection switch. The harmonic attenuation module is connected with the wireless fidelity link. The harmonic attenuation module and the wireless fidelity link are respectively connected with the baseband controller, wherein the transmitting sub-link is used for transmitting the radio frequency signals generated by the baseband controller, and the harmonic attenuation module is used for attenuating second harmonics in the radio frequency signals. In practical application, when the first selection switch and the transmission sublink are in a conduction state, the baseband controller controls the harmonic attenuation module to be conducted with the wireless fidelity link, and when the first selection switch and the transmission sublink are in a disconnection state, the baseband controller controls the harmonic attenuation module to be disconnected with the wireless fidelity link. Through the arrangement, the second harmonic generated when the transmitting sub-link transmits the radio frequency signal can be attenuated by the harmonic attenuation module, so that the influence of the second harmonic on the 5G link is reduced, the wireless fidelity link and the 5G link can work in a coexistence mode, the frequency of the 5G link does not need to be reduced, and the user experience is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic diagram of an rf control circuit according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another RF control circuit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an alternative RF control circuit according to an embodiment of the invention;
FIG. 4 is a schematic diagram of another RF control circuit according to an embodiment of the invention;
FIG. 5 is a schematic diagram of an alternative RF control circuit according to an embodiment of the invention;
fig. 6 is a schematic diagram of another rf control circuit according to an embodiment of the present invention.
Reference numerals:
10: a baseband controller; 20: a wireless fidelity link; 30: a harmonic attenuation module; 21: receiving a sublink; 22: a transmitter sublink; 23: a first selection switch; 24: an antenna; 25: a filter; 31: a second selection switch; 32: a wave trap; 33: an impedance matching device; 211: a first amplifier; 221: a second amplifier; 26: a radio frequency conduction test base;
201: a first wireless fidelity link; 202: a second wireless fidelity link; 50: a global navigation satellite system link; 60: a combiner.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present 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.
Referring to fig. 1, a schematic diagram of a radio frequency control circuit according to an embodiment of the present invention is shown. As shown in fig. 1, the rf control circuit includes: a baseband controller 10, a wireless fidelity link 20, and a harmonic attenuation module 30.
The wireless fidelity link 20 includes a receiving sub-link 21, a transmitting sub-link 22 and a first selection switch, and the receiving sub-link 21 and the transmitting sub-link 22 are respectively connected to a first end of the first selection switch 23. Harmonic attenuation module 30 is connected to wireless fidelity link 20. The harmonic attenuation module 30 and the wireless fidelity link 20 are respectively connected to the baseband controller 10, and the baseband controller 10 is configured to control connection or disconnection between the harmonic attenuation module 30 and the wireless fidelity link 20 according to connection or disconnection states of the first selection switch 23 and the transmission sublink 22, where the transmission sublink 22 is configured to transmit a radio frequency signal generated by the baseband controller 10, and the harmonic attenuation module 30 is configured to attenuate a second harmonic in the radio frequency signal.
When the first selection switch 23 and the transmission sublink 22 are in a conducting state, the baseband controller 10 controls the harmonic attenuation module 30 to conduct with the wireless fidelity link 20. When the first selection switch 23 is disconnected from the transmission sublink 22, the baseband controller 10 controls the disconnection of the harmonic attenuation module 30 from the wireless fidelity link 20.
In the embodiment of the present invention, the wireless fidelity link 20 includes a receiving sub-link 21, a transmitting sub-link 22 and a first selection switch 23, and the receiving sub-link 21 and the transmitting sub-link 22 are respectively connected to a first end of the first selection switch 23. Harmonic attenuation module 30 is connected to wireless fidelity link 20. The harmonic attenuation module 30 and the wireless fidelity link 20 are respectively connected to the baseband controller 10, wherein the transmitter sub-link 22 is configured to transmit the radio frequency signal generated by the baseband controller 10, and the harmonic attenuation module 30 is configured to attenuate a second harmonic in the radio frequency signal. In practical applications, when the first selection switch 23 and the transmission sublink 22 are in a conducting state, the baseband controller 10 controls the harmonic attenuation module 30 to be in conduction with the wireless fidelity link 20, and when the first selection switch 23 and the transmission sublink 22 are in a disconnecting state, the baseband controller 10 controls the harmonic attenuation module 30 to be disconnected from the wireless fidelity link 20. Through the arrangement, the second harmonic generated when the transmitting sub-link 22 transmits the radio frequency signal can be attenuated by the harmonic attenuation module 30, so that the influence of the second harmonic on the 5G link is reduced, the wireless fidelity link 20 and the 5G link can work in a coexistence mode, the frequency of the 5G link does not need to be reduced, and the user experience is improved.
It should be noted that the wifi link 20 may be a wifi 2.4G link. Of course, the wifi link 20 may also be other types of links, and the embodiment of the present invention is not limited herein.
In addition, in some embodiments, referring to fig. 2, a schematic diagram of another radio frequency control circuit provided in the embodiments of the present invention is shown, and as shown in fig. 2, the wireless fidelity link 20 may further include an antenna 24, and the second terminal of the first selection switch 23 is connected to the antenna 24. At this time, the signal transmitted by the transmitting sub-link 22 can be transmitted through the antenna 24, and the receiving sub-link 21 can also receive the signal through the antenna 24.
Additionally, in some embodiments, as shown in fig. 2, the harmonic attenuation module 30 may include: a second selection switch 31 and a wave trap 32. A first terminal of the second selection switch 31 is connected to a first terminal of the wave trap 32, and a second terminal of the wave trap 32 is grounded. A second terminal of the second selection switch 31 is connected between the first selection switch 23 and the antenna 24. The control terminal of the second selection switch 31 is connected to the baseband controller 10.
When the first selection switch 23 and the transmission sub-link 22 are in a conduction state, the baseband controller 10 controls the first end of the second selection switch 31 to be in conduction with the first end of the wave trap 32. When the first selection switch 23 is in a disconnected state from the transmission sub-link 22, the baseband controller 10 controls the first end of the second selection switch 31 to be disconnected from the first end of the trap 32.
In the embodiment of the present invention, when the first selection switch 23 and the transmission sublink 22 are in a conduction state, the baseband controller 10 controls the first end of the second selection switch 31 to be conducted with the first end of the wave trap 32, and since the second end of the wave trap 32 is grounded, when the transmission sublink 22 transmits a radio frequency signal, a second harmonic generated by the transmitted radio frequency signal is conducted to the ground through the wave trap 32, so that the radio frequency signal transmitted by the transmission sublink 22 does not affect the 5G link, that is, the wireless fidelity link 20 does not affect the 5G link.
When the first selection switch 23 and the transmission sublink 22 are in the disconnected state, the baseband controller 10 controls the first end of the second selection switch 31 to be disconnected from the first end of the wave trap 32, and at this time, the transmission sublink 22 cannot transmit a radio frequency signal and cannot generate a second harmonic, so that the first end of the second selection switch 31 can be disconnected from the first end of the wave trap 32.
Additionally, in some embodiments, as shown in fig. 2, the harmonic attenuation module 30 may further include: an impedance matching device 33. A first terminal of the impedance matching device 33 is connected to a first terminal of the second selection switch 31, and a second terminal of the impedance matching device 33 is grounded. When the first selection switch 23 is disconnected from the transmission sub-link 22, the baseband controller 10 controls the first terminal of the second selection switch 31 to be conductive with the impedance matching device 33.
At this time, when the first selection switch 23 and the transmission sublink 22 are in a disconnected state, if the impedance matching device 33 is not turned on by the second selection switch 31, the impedance in the wireless fidelity link 20 may be changed, which affects the performance of the wireless fidelity link 20.
Therein, in some embodiments, the first selection switch 23 and the second selection switch 31 may be both single-pole double-throw switches. At this time, when the first selection switch 23 and the transmission sub-link 22 are in a disconnected state, the first selection switch 23 and the reception sub-link 21 are turned on, and the controller controls the first terminal of the second selection switch 31 to be turned on with the impedance matching device 33, since the impedance matching device 33 has a certain impedance, the impedance of the wireless fidelity link 20 and the impedance of the impedance matching device 33 can be matched, so that the reception sub-link 21 does not cause signal distortion due to impedance mismatch in the process of receiving signals.
Because the single-pole double-throw switch module has the advantages of simple structure and low cost, under the condition that the first selection switch 23 and the second selection switch 31 are both single-pole double-throw switches, the first selection switch 23 and the second selection switch 31 can have the advantages of simple structure and low cost correspondingly.
It should be noted that the impedance matching device 33 may be a 50 ohm resistor, and of course, the impedance matching device 33 may also be another device, which is not limited herein in the embodiment of the present invention.
Additionally, in some embodiments, as shown in fig. 1, the first end of the first selection switch 23 may include: a first input terminal and a second input terminal. In this case, the first input is connected to the receive sub-link 21 and the second input is connected to the transmit sub-link 22.
Since the first selection switch 23 is a single-pole double-throw switch, after the first input terminal is connected to the receiving sub-link 21, the first input terminal can be conducted to the receiving sub-link 21 by adjusting the first selection switch 23, that is, the first selection switch 23 is conducted to the receiving sub-link 21. Likewise, the second input terminal may be made conductive with the transmission sublink 22, i.e., the first selection switch 23 is made conductive with the transmission sublink 22.
The first selection switch 23 may further include a third output terminal connected to the antenna 24 and a control terminal connected to the baseband controller 10.
In addition, in some embodiments, the first terminal of the second selection switch 31 may include: a first output terminal and a second output terminal. At this time, the first output terminal is connected to the first terminal of the trap 32, and the second output terminal is connected to the first terminal of the impedance matching device 33.
Since the second selection switch 31 is a single-pole double-throw switch, after the first output end is connected to the first end of the wave trap 32, the first output end can be conducted with the wave trap 32 by adjusting the second selection switch 31, that is, the second selection switch 31 is conducted with the wave trap 32. Similarly, the second output terminal may be made conductive with the impedance matching device 33, that is, the second selection switch 31 may be made conductive with the impedance matching device 33.
Wherein the second selection switch may further comprise a third input terminal connected between the third output terminal and the antenna 24.
Additionally, in some embodiments, the transmit sublink 22 may include: the first amplifier 211, the receive sub-link 21 may include: a second amplifier 221. A first terminal of the first amplifier 211 is connected to the baseband controller 10, and a second terminal of the first amplifier 211 is connected to a first terminal of the first selection switch 23; a first terminal of the second amplifier 221 is connected to the baseband controller 10, and a second terminal of the second amplifier 221 is connected to a first terminal of the first selection switch 23.
By providing the first amplifier 211 on the receiving sub-link 21, the signal received by the receiving sub-link 21 can be amplified, and then the amplified signal is transferred to the baseband controller 10, which facilitates the signal processing interfaced by the baseband controller 10. A second amplifier 221 is provided on the transmission sublink 22, so that the signal transmitted by the transmission sublink 22 can be amplified and then transmitted through the antenna 24.
It should be noted that the first amplifier 211 may be connected to a first input terminal of the first selection switch 23, and the second amplifier 221 may be connected to a second input terminal of the first selection switch 23.
Additionally, in some embodiments, as shown in fig. 2, wireless fidelity link 20 may further comprise: and a filter 25, wherein a first terminal of the filter 25 is connected to a second terminal of the first selection switch 23, and a second terminal of the filter 25 is connected to the antenna 24.
In case the wireless fidelity link 20 comprises a filter 25, the receive sub-link 21 may receive the filtered signal, which is then amplified by the first amplifier 211 and transmitted to the baseband controller 10. The transmit sublink 22 may amplify the transmitted signal through a second amplifier 221, after which the amplified signal is filtered through a filter 25 before being transmitted through an antenna 24.
It should be noted that the first amplifier 211 may be a low noise amplifier, the second amplifier 221 may be a power amplifier, of course, the second amplifier 221 may also be other types of amplifiers, and the second amplifier 221 may also be other types of amplifiers, which is not limited herein in the embodiment of the present invention.
Additionally, in some embodiments, as shown in fig. 2, wireless fidelity link 20 may further comprise: the radio frequency conduction test base 26. A first end of the radio frequency conductive test pad 26 is connected to a second end of the filter 25 and a second end of the radio frequency conductive test pad 26 is connected to the antenna 24.
Because the wireless fidelity link 20 needs to be tested to determine whether the performance of the wireless fidelity link 20 meets the standard, i.e., whether the signal transmitted or received by the wireless fidelity link 20 reaches a predetermined value, the wireless fidelity link 20 includes a radio frequency conductive test base 26, and the signal received or transmitted in the wireless fidelity link 20 can be tested through the radio frequency conductive test base 26.
The principle of the rf control circuit provided by the embodiment of the present invention is explained with reference to fig. 2 as follows:
when the radio frequency control circuit provided by the embodiment of the present invention is used, when the transmission sublink 22 in the wireless fidelity link 20 transmits a radio frequency signal, at this time, the baseband controller 10 controls the second input terminal of the first selection switch 23 to be conducted with the transmission sublink 22, and the baseband controller 10 controls the first output terminal of the second selection switch 31 to be conducted with the trap 32. The second harmonic generated by the signal transmitted by the transmitter sublink 22 can be guided to ground through the trap 32, so that the second harmonic does not affect the 5G link. Then, the radio frequency signal transmitted by the transmission sublink 22 passes through the filter 25 and is transmitted through the antenna 24. When the receiving sub-link 21 in the wireless fidelity link 20 receives a signal, at this time, the baseband controller 10 controls the first input terminal of the first selection switch 23 to be communicated with the receiving sub-link 21, and the baseband controller 10 controls the second output terminal of the second selection switch 31 to be conducted with the impedance matching device 33. Since the impedance matching device 33 has a certain impedance, it is ensured that the impedance of the wireless fidelity link 20 is matched to the impedance matching device 33, and does not affect the received signal of the receiving sub-link 21.
In the embodiment of the present invention, the wireless fidelity link includes a receiving sub-link, a transmitting sub-link, and a first selection switch, and the receiving sub-link and the transmitting sub-link are respectively connected to a first end of the first selection switch. The harmonic attenuation module is connected with the wireless fidelity link. The harmonic attenuation module and the wireless fidelity link are respectively connected with the baseband controller, wherein the transmitting sub-link is used for transmitting the radio frequency signals generated by the baseband controller, and the harmonic attenuation module is used for attenuating second harmonics in the radio frequency signals. In practical application, when the first selection switch and the transmission sublink are in a conduction state, the baseband controller controls the harmonic attenuation module to be conducted with the wireless fidelity link, and when the first selection switch and the transmission sublink are in a disconnection state, the baseband controller controls the harmonic attenuation module to be disconnected with the wireless fidelity link. Through the arrangement, the second harmonic generated when the transmitting sublink transmits radio frequency signals in the wireless fidelity link can be attenuated by the harmonic attenuation module, so that the influence of the second harmonic on the 5G link is reduced, the wireless fidelity link and the 5G link can work in a coexistence mode, the frequency of the 5G link does not need to be reduced, and the user experience is improved.
An embodiment of the present invention provides an electronic device, which includes the radio frequency control circuit provided in any one of the above embodiments. The electronic device includes, but is not limited to, a smart phone, a tablet computer, a notebook computer, and the like.
It should be noted that, in the electronic device provided in the embodiment of the present invention, the radio frequency control circuit may also have the following forms: referring to fig. 3, a schematic diagram of another radio frequency control circuit provided in an embodiment of the present invention is shown, and as shown in fig. 3, the radio frequency control circuit includes a baseband controller 10, a wireless fidelity link 20, a harmonic attenuation module 30, a wireless fidelity 5G link 40, a global navigation satellite system link 50, a combiner 60, and two antennas 24.
Wherein, the global navigation satellite system link 50, the wireless station reporting link 20 and the wireless fidelity 5G link are respectively connected with the baseband controller 10. Harmonic attenuation module 30 is connected with wireless fidelity link 20, and wireless fidelity link 20 and wireless fidelity 5G link 40 are connected with combiner 60 respectively, and combiner 60 is connected with an antenna 24.
The global navigation satellite system link 50 comprises an amplifier 1 and two filters, the amplifier being connected between the two filters, one of the two filters being connected to the baseband controller 10 and the other filter being connected to the other antenna 24.
It should be noted that the wifi link 20 may be a wifi 2.4G link. The baseband controller 10 may include a first baseband controller and a second baseband controller. The first baseband controller is connected to gnss link 50 and the second baseband controller is connected to wifi link 20 and wifi 5G link 40.
Referring to fig. 4, a schematic diagram of another radio frequency control circuit provided in an embodiment of the present invention is shown, and as shown in fig. 4, the radio frequency control circuit includes a baseband controller 10, a wireless fidelity link 20, a harmonic attenuation module 30, a wireless fidelity 5G link 40, a global navigation satellite system link 50, a combiner 60, and an antenna 24.
The gnss link 50, the wifi link 20, and the wifi 5G link 40 are respectively connected to the baseband controller 10. Harmonic attenuation module 30 is connected with wifi link 20, wifi 5G link 40 and global navigation satellite system link 50 are connected with combiner 60 respectively, and combiner 60 is connected with antenna 24.
It should be noted that the wifi link 20 may be a wifi 2.4G link. The baseband controller 10 may include a first baseband controller and a second baseband controller. The first baseband controller is connected to wifi link 20, wifi 5G link 40, and the second baseband controller is connected to gnss link 50.
Referring to fig. 5, a schematic diagram of another rf control circuit provided in an embodiment of the present invention is shown, and as shown in fig. 5, the rf control circuit includes an rf control circuit including a baseband controller 10, a wifi link 20, a harmonic attenuation module 30, a wifi 5G link 40, a global navigation satellite system link 50, and three antennas 24.
The gnss link 50, the wifi link 20, and the wifi 5G link 40 are respectively connected to the baseband controller 10. Harmonic attenuation module 30 is connected to wireless fidelity link 20.
Global navigation satellite system link 50, first wireless fidelity link 201, and second wireless fidelity link 202 are each coupled to an antenna 24.
Referring to fig. 6, a schematic diagram of another radio frequency control circuit provided in an embodiment of the present invention is shown, and as shown in fig. 6, the radio frequency control circuit includes a baseband controller 10, a wifi link 20, a harmonic attenuation module 30, a wifi 5G link 40, a global navigation satellite system link 50, a combiner 60, and two antennas 24.
The gnss link 50, the wifi link 20, and the wifi 5G link 40 are respectively connected to the baseband controller 10. Harmonic attenuation module 30 is connected to wireless fidelity link 20.
Global navigation satellite system link 50 and wifi 5G link 40 are each connected to a combiner 60, which is connected to one antenna 24, and wifi link 20 is connected to the other antenna 24.
In the embodiment of the present invention, the wireless fidelity link includes a receiving sub-link, a transmitting sub-link, and a first selection switch, and the receiving sub-link and the transmitting sub-link are respectively connected to a first end of the first selection switch. The harmonic attenuation module is connected with the wireless fidelity link. The harmonic attenuation module and the wireless fidelity link are respectively connected with the baseband controller, wherein the transmitting sub-link is used for transmitting the radio frequency signals generated by the baseband controller, and the harmonic attenuation module is used for attenuating second harmonics in the radio frequency signals. In practical application, when the first selection switch and the transmission sublink are in a conduction state, the baseband controller controls the harmonic attenuation module to be conducted with the wireless fidelity link, and when the first selection switch and the transmission sublink are in a disconnection state, the baseband controller controls the harmonic attenuation module to be disconnected with the wireless fidelity link. Through the arrangement, the second harmonic generated when the transmitting sub-link transmits the radio frequency signal can be attenuated by the harmonic attenuation module, so that the influence of the second harmonic on the 5G link is reduced, the wireless fidelity link and the 5G link can work in a coexistence mode, the frequency of the 5G link does not need to be reduced, and the user experience is improved.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
While alternative embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including alternative embodiments and all such alterations and modifications as fall within the true scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or terminal equipment comprising the element.
The technical solutions provided by the present invention are described in detail above, and the principle and the implementation of the present invention are explained in this document by applying specific examples, and the descriptions of the above examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person 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 (12)
1. A radio frequency control circuit, the radio frequency control circuit comprising: the device comprises a baseband controller, a wireless fidelity link and a harmonic attenuation module; wherein the content of the first and second substances,
the wireless fidelity link comprises a receiving sub-link, a transmitting sub-link and a first selection switch, wherein the receiving sub-link and the transmitting sub-link are respectively connected with a first end of the first selection switch;
the harmonic attenuation module is connected with the wireless fidelity link;
the harmonic attenuation module and the wireless fidelity link are respectively connected with the baseband controller, and the baseband controller is used for controlling the connection or disconnection between the harmonic attenuation module and the wireless fidelity link according to the connection or disconnection state between the first selection switch and the transmitting sub-link;
the transmitting sublink is used for transmitting a radio frequency signal generated by the baseband controller, and the harmonic attenuation module is used for attenuating a second harmonic in the radio frequency signal.
2. The radio frequency control circuit of claim 1,
when the first selection switch and the transmission sublink are in a conduction state, the baseband controller controls the conduction of the harmonic attenuation module and the wireless fidelity link;
the baseband controller controls disconnection of the harmonic attenuation module from the wireless fidelity link when the first selection switch is disconnected from the transmit sublink.
3. The radio frequency control circuit of claim 1, wherein the wireless fidelity link further comprises an antenna;
and the second end of the first selection switch is connected with the antenna.
4. The radio frequency control circuit of claim 3, wherein the harmonic attenuation module comprises: a second selection switch and a wave trap;
the first end of the second selection switch is connected with the first end of the wave trap, and the second end of the wave trap is grounded;
a second terminal of the second selection switch is connected between the first selection switch and the antenna;
the control end of the second selection switch is connected with the baseband controller;
when the first selection switch and the transmission sublink are in a conducting state, the baseband controller controls the first end of the second selection switch to be conducted with the first end of the wave trap;
when the first selection switch is disconnected from the transmission sublink, the baseband controller controls the first end of the second selection switch to be disconnected from the first end of the wave trap.
5. The radio frequency control circuit of claim 4, wherein the harmonic attenuation module further comprises: an impedance matching device;
the first end of the impedance matching device is connected with the first end of the second selection switch, and the second end of the impedance matching device is grounded;
when the first selection switch and the transmission sublink are in a disconnection state, the baseband controller controls the first end of the second selection switch to be conducted with the impedance matching device.
6. The radio frequency control circuit according to claim 4, wherein the first selection switch and the second selection switch are both single-pole double-throw switches.
7. The radio frequency control circuit according to claim 1, wherein the first terminal of the first selection switch comprises: a first input terminal and a second input terminal;
the first input is connected to the receiving sublink and the second input is connected to the transmitting sublink.
8. The radio frequency control circuit according to claim 5, wherein the first terminal of the second selection switch comprises: a first output terminal and a second output terminal;
the first output end is connected with the first end of the wave trap, and the second output end is connected with the first end of the impedance matching device.
9. The radio frequency control circuit of claim 1, wherein the receive sublink comprises: a first amplifier, the transmit sublink comprising: a second amplifier;
the first end of the first amplifier is connected with the baseband controller, and the second end of the first amplifier is connected with the first end of the first selection switch;
the first end of the second amplifier is connected with the baseband controller, and the second end of the second amplifier is connected with the first end of the first selection switch.
10. The radio frequency control circuit of claim 3, wherein the wireless fidelity link further comprises: and a first end of the filter is connected with the second end of the first selection switch, and a second end of the filter is connected with the antenna.
11. The radio frequency control circuit of claim 10, wherein the wireless fidelity link further comprises: a radio frequency conduction test base;
the first end of the radio frequency conduction test base is connected with the second end of the filter, and the second end of the radio frequency conduction test base is connected with the antenna.
12. An electronic device, characterized in that the electronic device comprises a radio frequency control circuit according to any of claims 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010015307.4A CN111181590B (en) | 2020-01-07 | 2020-01-07 | Radio frequency control circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010015307.4A CN111181590B (en) | 2020-01-07 | 2020-01-07 | Radio frequency control circuit and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111181590A CN111181590A (en) | 2020-05-19 |
| CN111181590B true CN111181590B (en) | 2021-11-05 |
Family
ID=70649315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010015307.4A Active CN111181590B (en) | 2020-01-07 | 2020-01-07 | Radio frequency control circuit and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111181590B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112202458A (en) * | 2020-09-11 | 2021-01-08 | 深圳市广和通无线股份有限公司 | Communication module and communication terminal |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753553A (en) * | 2013-12-26 | 2015-07-01 | 中兴通讯股份有限公司 | Device, mobile terminal and method for improving radiofrequency link receiving/transmitting performance |
| CN105743831A (en) * | 2016-04-15 | 2016-07-06 | 数微(福建)通信技术有限公司 | Radio frequency processing method based on WIFI230mHz |
| CN109039369A (en) * | 2018-08-16 | 2018-12-18 | Oppo（重庆）智能科技有限公司 | Radio circuit and electronic equipment |
| CN209497459U (en) * | 2019-02-25 | 2019-10-15 | 维沃移动通信有限公司 | A kind of radio frequency control circuit and mobile terminal |
| CN209787173U (en) * | 2019-05-29 | 2019-12-13 | 维沃移动通信有限公司 | Radio frequency circuit and terminal |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852148A (en) * | 2015-04-03 | 2015-08-19 | 青岛海信移动通信技术股份有限公司 | Tunable antenna and terminal |
| KR102489781B1 (en) * | 2016-11-18 | 2023-01-17 | 삼성전기주식회사 | Radio frequency switch apparatus with improved noise suppression characteristics |
| CN107634766A (en) * | 2017-08-25 | 2018-01-26 | 广东欧珀移动通信有限公司 | Radio circuit, antenna assembly and electronic equipment |
| CN107708193A (en) * | 2017-10-24 | 2018-02-16 | 安普德（天津）科技股份有限公司 | A kind of multi-operation mode smart bluetooth WIFI modules |
| CN110138411A (en) * | 2019-05-31 | 2019-08-16 | 维沃移动通信有限公司 | Radio circuit, signal processing method, device and terminal |
-
2020
- 2020-01-07 CN CN202010015307.4A patent/CN111181590B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753553A (en) * | 2013-12-26 | 2015-07-01 | 中兴通讯股份有限公司 | Device, mobile terminal and method for improving radiofrequency link receiving/transmitting performance |
| CN105743831A (en) * | 2016-04-15 | 2016-07-06 | 数微(福建)通信技术有限公司 | Radio frequency processing method based on WIFI230mHz |
| CN109039369A (en) * | 2018-08-16 | 2018-12-18 | Oppo（重庆）智能科技有限公司 | Radio circuit and electronic equipment |
| CN209497459U (en) * | 2019-02-25 | 2019-10-15 | 维沃移动通信有限公司 | A kind of radio frequency control circuit and mobile terminal |
| CN209787173U (en) * | 2019-05-29 | 2019-12-13 | 维沃移动通信有限公司 | Radio frequency circuit and terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111181590A (en) | 2020-05-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108110423B (en) | Antenna tuning circuit, antenna device and mobile terminal | |
| KR20040099310A (en) | System and method for a gps enabled antenna | |
| WO2014008918A1 (en) | Transceiver front-end | |
| CN110011721B (en) | Power amplifier equipment and power amplifier system in satellite communication system | |
| CN111245469B (en) | Radio frequency circuit and electronic device | |
| CN101594669A (en) | A kind of near frequency band wireless device anti-disturbance method and device | |
| CN108322237B (en) | Interference suppression system and method | |
| US11394472B2 (en) | Double-antenna radio frequency power detection circuit and apparatus, and mobile terminal | |
| CN114285433B (en) | Wireless communication assembly, method and terminal equipment | |
| WO2023051219A1 (en) | Radio-frequency circuit, radio-frequency module, and electronic device | |
| CN111669199A (en) | Power detection circuit and electronic equipment | |
| US9240766B2 (en) | Wide-band coupler | |
| CN111181590B (en) | Radio frequency control circuit and electronic equipment | |
| CN110880942B (en) | Radio frequency circuit and communication equipment | |
| CN106452471A (en) | GSM radio frequency circuit and terminal comprising circuit | |
| CN111404576B (en) | Radio frequency system and electronic equipment | |
| CN210246743U (en) | Radio frequency control circuit and mobile terminal | |
| CN111181620A (en) | Radio frequency circuit and electronic equipment | |
| US20140334361A1 (en) | Apparatus for communication using simplex antennas | |
| GB2501487A (en) | Multiple frequency antenna involving filter and impedance matching arrangements | |
| CN110855315A (en) | Radio frequency architecture and mobile terminal | |
| CN112886987B (en) | Radio frequency circuit and electronic equipment | |
| CN110311705A (en) | A kind of signal processing circuit, terminal device and signal processing method | |
| CN218041404U (en) | Signal receiving and transmitting device and wireless network equipment | |
| US20200235467A1 (en) | Antenna Connection Circuits |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |