CN113765534B - Radio frequency module, electronic equipment, control method and storage medium - Google Patents
Radio frequency module, electronic equipment, control method and storage medium Download PDFInfo
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- CN113765534B CN113765534B CN202110845096.1A CN202110845096A CN113765534B CN 113765534 B CN113765534 B CN 113765534B CN 202110845096 A CN202110845096 A CN 202110845096A CN 113765534 B CN113765534 B CN 113765534B
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- 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
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The embodiment of the invention relates to a radio frequency module, electronic equipment, a control method and a storage medium, wherein the radio frequency module comprises: the device comprises a radio frequency transceiving module, a multi-band selection transmitting and filtering module, a plurality of single-band receiving and filtering modules, an antenna and a processing module; the transmitting end of the radio frequency transceiving module is electrically connected with the input feed end of the multi-band selective transmitting and filtering module; the output feed end of the multi-band selective transmission filtering module is electrically connected with the antenna; the radio frequency transceiving module comprises a plurality of receiving ends; each receiving end is electrically connected with the antenna through a single-frequency-band receiving and filtering module in one-to-one correspondence; the processing module is electrically connected with the multi-band selective transmitting and filtering module; the processing module is used for responding to the frequency band selection signal to control the multi-band selection transmission filtering module to be in a frequency band selection conduction mode. The embodiment of the invention can solve the problems that the multi-band filtering structure is complex and a plurality of transceivers are required to be arranged.
Description
Technical Field
The embodiment of the invention relates to the technical field of electronic equipment, in particular to a radio frequency module, electronic equipment, a control method and a storage medium.
Background
The working frequency bands of current intelligent devices such as mobile phones are more and more, from 2g,3g,4g to 5G, and WiFi, bluetooth and GPS are also applied around, so that the corresponding antenna needs to comprise a plurality of frequency bands. This places more demands on the filter characteristics.
In the prior art, because a filter is a single frequency, generally, one filter is used for one frequency band, and only one path of radio frequency signal can pass through the same path of radio frequency path.
Then, when multiple frequency bands are needed, for example, when the LTE carrier aggregation function and the 4G and 5G dual connectivity function are implemented, two sets of transceivers need to be used. In addition, in the prior art, multi-band filtering is realized, a combiner and a large number of peripheral radio frequency switches are required to be matched, and the structure is complex.
Disclosure of Invention
In view of the above, it is necessary to provide a radio frequency module, an electronic device, a control method and a storage medium to solve the problems of complicated structure of multi-band filtering and the need of multiple transceivers.
In a first aspect, an embodiment of the present invention provides a radio frequency module, including:
the device comprises a radio frequency transceiving module, a multi-band selection transmitting and filtering module, a plurality of single-band receiving and filtering modules, an antenna and a processing module;
the transmitting end of the radio frequency transceiving module is electrically connected with the input feed end of the multi-band selective transmitting and filtering module; the output feed end of the multi-band selective transmission filtering module is electrically connected with the antenna; the radio frequency transceiving module comprises a plurality of receiving ends; each receiving end is electrically connected with the antenna through the single-frequency-band receiving and filtering modules in one-to-one correspondence; the processing module is electrically connected with the multi-band selective transmitting and filtering module; the processing module is used for responding to the frequency band selection signal to control the multi-band selection transmission filtering module to be in a frequency band selection conduction mode.
In one embodiment, the power amplifier further comprises a power amplification module; the power amplification module is connected in series between the transmitting end of the radio frequency transceiving module and the input feed end of the multi-band selective transmitting and filtering module.
In one embodiment, further comprising a coupler; the coupler is connected in series between the antenna and the output feed end of the multi-band selective transmission filtering module; the coupling end of the coupler is electrically connected with the feedback end of the radio frequency transceiving module; the coupler is used for acquiring the reflected power of the antenna and feeding the reflected power back to the feedback end; the processing module is used for judging whether the radio frequency module breaks down or not according to the reflected power.
In one embodiment, the multi-band selective transmission filtering module comprises a resonance body, N types of resonance branches and N types of selection switches;
the ith type resonance branch is electrically connected with the resonance body through an ith type selection switch; the lengths of the different resonant branches are different; when the ith type selection switch is switched on, the multiband selection transmission filtering module switches on an ith frequency band signal; when the i-th selection switch is closed, the multi-band selection transmission filtering module cuts off the i-th band signal;
the processing module is used for responding to the selected frequency band signal to control the corresponding class selection switch of the selected frequency band to be switched on and the non-corresponding class selection switch of the selected frequency band to be switched off so as to enable the multi-band selective transmitting and filtering module to be in a selected frequency band switching-on mode;
wherein N is a positive integer greater than or equal to 2; n is more than or equal to i and more than or equal to 1.
In one embodiment, the resonant body comprises M sub-resonant bodies; each type of resonance branch comprises M sub-resonance branches; each type of selection switch comprises M sub-selection switches; the jth sub-resonance branch of the ith type resonance branch is electrically connected with the jth sub-resonance body through the jth sub-selection switch of the ith type selection switch;
wherein M is a positive integer greater than or equal to 2; m is more than or equal to j and more than or equal to 1.
In a second aspect, an embodiment of the present invention provides an electronic device, including the radio frequency module described in any embodiment of the first aspect.
In a third aspect, an embodiment of the present invention provides a radio frequency module control method, which is applicable to the radio frequency module described in any embodiment of the first aspect, and the method includes:
acquiring a selected frequency band signal;
and controlling the multi-band selection transmission filtering module to be in a frequency band selection conduction mode according to the frequency band selection signal.
In one embodiment, the rf module further comprises a coupler; the coupler is connected in series between the antenna and an output feed end of the multiband selective transmission filtering module; the coupling end of the coupler is electrically connected with the feedback end of the radio frequency transceiving module; the coupler is used for acquiring the reflected power of the antenna and feeding the reflected power back to the feedback end; the method further comprises the following steps:
acquiring the reflected power of an antenna;
and judging whether the radio frequency module breaks down or not according to the reflected power.
In one embodiment, the multi-band selective transmission filtering module comprises a resonance body, N types of resonance branches and N types of selection switches; the ith type resonance branch is electrically connected with the resonance body through an ith type selection switch; the lengths of the different resonant branches are different; when the i-th type selection switch is switched on, the multi-band selection transmission filtering module switches on the i-th frequency band signal; when the i-th type selection switch is closed, the multi-band selection transmission filtering module cuts off the i-th frequency band signal; wherein N is a positive integer greater than or equal to 2; n is more than or equal to i and more than or equal to 1;
the controlling the multi-band selection transmission filtering module to be in a selection band conduction mode according to the selection band signal comprises the following steps:
and controlling the corresponding class selection switch of the selected frequency band in the selected frequency band signal to be switched on and the non-corresponding class selection switch of the selected frequency band to be switched off according to the selected frequency band signal, so that the multi-band selective transmission filtering module is in a selected frequency band switching-on mode.
In a fourth aspect, the embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method according to any of the embodiments of the third aspect.
The radio frequency module provided by the embodiment of the invention comprises a radio frequency transceiving module, a multi-band selection transmitting and filtering module, a plurality of single-band receiving and filtering modules, an antenna and a processing module. The processing module is electrically connected with the multi-band selection transmission filtering module, and the processing module can respond to the selection frequency band signal to control the multi-band selection transmission filtering module to be in a selection frequency band conduction mode, so that when multi-band filtering is needed, the processing module only needs to control the multi-band selection transmission filtering module to be in the multi-band conduction mode. When the single-band filtering is needed, only the processing module is needed to control the multi-band selection transmission filtering module to be in the single-band conducting mode. The radio frequency module only comprises one radio frequency transceiving module, so that the structure is simple, and the product cost can be saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a schematic structural diagram of a radio frequency module according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of another radio frequency module according to an embodiment of the present disclosure;
fig. 3 is a frequency response diagram of a radio frequency module according to an embodiment of the present disclosure;
fig. 4 is a frequency response diagram of a radio frequency module according to an embodiment of the disclosure;
fig. 5 is a frequency response diagram of a radio frequency module according to an embodiment of the present disclosure;
fig. 6 is a schematic flow chart illustrating a radio frequency module control method according to an embodiment of the present disclosure.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
Fig. 1 is a schematic structural diagram of a radio frequency module according to an embodiment of the present disclosure, and as shown in fig. 1, the radio frequency module according to the embodiment of the present disclosure includes a radio frequency transceiver module 10, a multiband selective transmission filter module 20, a plurality of multiband reception filter modules 30, an antenna 40, and a processing module 50.
The transmitting terminal TX of the rf transceiver module 10 is electrically connected to the input feeding terminal of the multiband selective transmission filtering module 20. The output feed terminal of the multiband selective transmission filter module 20 is electrically connected to the antenna 40. The rf transceiver module 10 includes a plurality of receiving terminals. Each receiving terminal RX is electrically connected to the antenna 40 through a one-to-one corresponding single-band receiving and filtering module 30. The processing module 50 is electrically connected to the multiband selective transmission filtering module 20. The processing module 50 is used for controlling the multiband selective transmission filtering module 20 to be in a selective band on mode in response to the selective band signal. In fig. 1, 2 single-band receiving and filtering modules 30 are exemplarily provided, and are respectively labeled as a single-band receiving and filtering module 31 and a single-band receiving and filtering module 32. Correspondingly, the rf transceiver module 10 includes 2 receiving terminals, which are a receiving terminal RX1 and a receiving terminal RX2 respectively. The single-band receiving and filtering module 31 is connected to the receiving terminal RX1, and the single-band receiving and filtering module 32 is connected to the receiving terminal RX2.
The transmitting terminal TX of the rf transceiver module 10 is used to transmit rf signals, which are transmitted to the antenna through the multiband selective transmitting and filtering module 20. The processing module 50 can control the multiband selective transmitting and filtering module 20 to be in a selective band conducting mode according to the received selective band signal. For example, if the frequency band signal is selected to pass the LTE B1 and LTE B3 frequency bands, the processing module 50 controls the multiband selective transmission filter module 20 to be in the LTE B1 and LTE B3 frequency band conducting mode, that is, the LTE B1 and LTE B3 frequency band signals can be transmitted to the antenna, so as to form a transmission path. If the frequency band signal is selected to pass through the LTE B1 frequency band, the processing module 50 controls the multi-band selective transmission filtering module 20 to be in the LTE B1 frequency band conducting mode, that is, only the LTE B1 frequency band signal can be transmitted to the antenna, so as to form a transmission path. If the frequency band signal is selected to pass through the LTE B3 frequency band, the processing module 50 controls the multiband selective transmit filter module 20 to be in the LTE B3 frequency band conducting mode, that is, the LTE B3 frequency band signal can be transmitted to the antenna, so as to form a transmit path.
The antenna, for example, receives the radio frequency signal from the base station, and then transmits the radio frequency signal to the radio frequency transceiver module 10 after passing through the corresponding single-band receiving and filtering module 30, so as to form a receiving path and implement reception of the radio frequency signal. For example, the antenna acquires the LTE B1 frequency band signal from the base station, and then transmits the LTE B1 frequency band signal to the receiving end RX1 of the radio frequency transceiver module 10 after passing through the single-band receiving filter module 31 with the on-band being LTE B1, so as to form a receiving path, and implement receiving of the LTE B1 frequency band signal. For example, the antenna acquires an LTE B3 frequency band signal from the base station, and then transmits the signal to the receiving end RX2 of the radio frequency transceiver module 10 after passing through the single-band receiving and filtering module 32 with the conducted frequency band of LTE B3, so as to form a receiving path, thereby receiving the LTE B3 frequency band signal. The antenna acquires LTE B1 and LTE B3 frequency band signals from the base station, for example, and then transmits the signals to the receiving end RX1 of the radio frequency transceiver module 10 through the single band receiving filter module 31 with the on-band being LTE B1 to form a first receiving path, and transmits the signals to the receiving end RX2 of the radio frequency transceiver module 10 through the single band receiving filter module 32 with the on-band being LTE B3 to form a second receiving path, so as to receive the LTE B1 and LTE B3 frequency band signals.
When multi-band radio frequency signals need to be filtered, for example, when an LTE carrier aggregation function and a 4G and 5G dual-connection function are realized, the radio frequency module provided by the embodiment of the invention can be provided with only one radio frequency receiving and transmitting module, and the multi-band selective transmitting and filtering module is controlled to be in a corresponding selective band conduction mode through the control of the processing unit. A radio frequency receiving and transmitting module is not required to be arranged for each frequency band, and a combiner and a large number of peripheral switches are not required to be arranged, so that the structure is simple and the cost is low.
In some embodiments, optionally, the multiband selective transmitting and filtering module may include a resonant body, an N-type resonant stub, and an N-type selection switch. The ith type resonance branch is electrically connected with the resonance body through the ith type selection switch. The lengths of different types of resonance branches are different. When the i-th type selection switch is switched on, the multi-band selection emission filtering module switches on the Ai frequency band signal; when the i-th type selection switch is closed, the multi-band selection emission filtering module cuts off the Ai frequency band signal. The processing module is used for responding to the selected frequency band signal to control the corresponding class selection switch of the selected frequency band to be switched on and the non-corresponding class selection switch of the selected frequency band to be switched off so as to enable the multi-band selection transmitting and filtering module to be in a selected frequency band switching-on mode. Wherein N is a positive integer greater than or equal to 2; n is more than or equal to i and more than or equal to 1.
Fig. 2 is a schematic structural diagram of another radio frequency module according to an embodiment of the present invention. As shown in fig. 2, the multiband selective transmission filter module 20 includes a resonant body 21, two types of resonant branches, and two types of selection switches. I.e. the exemplary setting N of fig. 2 is equal to 2. The two types of resonant stubs are labeled as type 1 resonant stub 221 and type 2 resonant stub 222, respectively. The two types of selection switches are respectively labeled as a type 1 selection switch 231 and a type 2 selection switch 232. The class 1 resonant stub 221 is electrically connected to the resonant body through a class 1 selection switch 231. The class 2 resonant stub 222 is electrically connected to the resonant body through a class 2 selection switch 232. The lengths of different types of resonance branches are different. Namely, the class 1 resonance branch 221 and the class 2 resonance branch 222, so as to realize resonance on signals of different frequency bands. When the class 1 selection switch is turned on, the multiband selection transmission filtering module 20 turns on the 1 st frequency band signal; when the class 1 selection switch is turned off, the multiband selection transmission filtering module 20 cuts off the 1 st band signal. When the class 2 selection switch is turned on, the multiband selection transmission filtering module 20 turns on the 2 nd frequency band signal; when the class 2 selection switch is turned off, the multiband selection transmission filtering module 20 cuts off the 2 nd band signal. The processing module 50 may control the selection switch corresponding to the selected frequency band in the selected frequency band signal to be turned on (for example, the selection switch corresponding to the selected frequency band is a type 1 selection switch), and control the selection switch not corresponding to the selected frequency band to be turned off (for example, the selection switch not corresponding to the selected frequency band is a type 2 selection switch), so that the multi-band selective transmission filter module is in the selected frequency band on mode (for example, the type 1 selection switch is turned on, and when the type 2 selection switch is turned off, the multi-band selective transmission filter module is in the type 1 frequency band on mode).
For example, when the LTE carrier aggregation function is implemented, the frequency band signal is selected to select the LTE B1 and LTE B3 frequency bands to pass through. The 1 st frequency band signal is an LTE B1 frequency band signal, and the 2 nd frequency band signal is an LTE B2 frequency band signal. Then, the processing module 50 may control both the type 1 selection switch 231 and the type 2 selection switch 232 to be turned on, so that the multi-band selective transmission filtering module 20 is in the on mode for both the LTE B1 band signal and the LTE B2 band signal, and the LTE B1 band signal and the LTE B2 band signal transmitted by the radio frequency transceiver module 10 may be transmitted to the antenna after passing through the multi-band selective transmission filtering module 20, where the frequency response is as shown in fig. 3.
If the radio frequency transceiver module 10 only needs to work in the LTE B1 frequency band, the processing module 50 may control the type 1 selection switch 231 to be turned on and control the type 2 selection switch 232 to be turned off, so that the multi-band selection transmission filtering module 20 is in the LTE B1 frequency band signal conduction mode, and the LTE B1 frequency band signal transmitted by the radio frequency transceiver module 10 may be transmitted to the antenna after passing through the multi-band selection transmission filtering module 20, and the frequency response is as shown in fig. 4.
If the radio frequency transceiver module 10 only needs to work in the LTE B3 frequency band, the processing module 50 may control the type 2 selection switch 232 to be turned on and control the type 1 selection switch 231 to be turned off, so that the multi-band selection transmission filtering module 20 is in the LTE B3 frequency band signal conduction mode, and the LTE B3 frequency band signal transmitted by the radio frequency transceiver module 10 may be transmitted to the antenna after passing through the multi-band selection transmission filtering module 20, and the frequency response is as shown in fig. 5.
The embodiment of the invention can control the on and off of the N-type selection switch through the processing module, and can realize the on and off of the multi-band selection transmitting filtering module to the selection frequency band signal. When the single-frequency band is required to work, the corresponding class selection switch of the working frequency band in the multi-frequency band selection transmission filtering module can be controlled to be switched on, and the corresponding class selection switch of the non-working frequency band is switched off, so that the non-working frequency band cannot be transmitted to the antenna, and clutter can be avoided.
In some embodiments, optionally, the resonant body of the multiband selective transmission filter module may include M sub-resonant bodies. Correspondingly, each type of resonance branch comprises M sub-resonance branches, and each type of selection switch comprises M sub-selection switches. The jth sub-resonance branch of the ith type resonance branch is electrically connected with the jth sub-resonance body through the jth sub-selection switch of the ith type selection switch; wherein M is a positive integer greater than or equal to 2; m is more than or equal to j and more than or equal to 1.
The resonance body of the multi-band selective transmission filter module generally comprises a plurality of sub-resonance bodies so as to realize the adjustment of multiple resonance frequency points. If the resonant body comprises M sub-resonant bodies, each corresponding type of resonant stub comprises M sub-resonant stubs, and each type of selection switch comprises M sub-selection switches. The jth sub-resonant branch of the ith type of resonant branch is electrically connected with the jth sub-resonant body through the jth sub-selection switch of the ith type of selection switch. Taking fig. 2 as an example, the multiband selective transmission filtering module 20 includes two sub-resonant bodies, two types of resonant branches, and two types of selection switches. The two sub-resonant bodies are respectively marked as sub-resonant body STUB _3 and sub-resonant body STUB _4. The two types of resonant stubs are labeled as type 1 resonant stub 221 and type 2 resonant stub 222, respectively. The two types of selection switches are respectively labeled as a type 1 selection switch 231 and a type 2 selection switch 232. Class 1 resonant STUB 221 includes two sub-resonant STUBs labeled sub-resonant STUB STUB _5 and sub-resonant STUB STUB _6, respectively. Class 2 resonant STUB 222 includes two sub-resonant STUBs, labeled sub-resonant STUB STUB _7 and sub-resonant STUB STUB _8, respectively. The class 1 selection switch 231 includes two sub-selection switches, respectively labeled as a sub-selection switch SPST _1 and a sub-selection switch SPST _3. The class 2 selection switch 232 includes two sub-selection switches, respectively labeled as a sub-selection switch SPST _2 and a sub-selection switch SPST _4. The sub-resonant branch STUB _5 is electrically connected to the sub-resonant body STUB _3 through the sub-selection switch SPST _ 1. The sub-resonant branch STUB _6 is electrically connected to the sub-resonant body STUB _4 through the sub-selection switch SPST _3. The sub-resonance branch STUB _7 is electrically connected with the sub-resonance body STUB _3 through the sub-selection switch SPST _ 2. The sub-resonant branch STUB _8 is electrically connected to the sub-resonant body STUB _4 through the sub-selection switch SPST _4.
For example, when the LTE carrier aggregation function is implemented, the frequency band signal is selected to select the LTE B1 and LTE B3 frequency bands to pass through. The 1 st frequency band signal is an LTE B1 frequency band signal, and the 2 nd frequency band signal is an LTE B2 frequency band signal. The processing module 50 may control the sub-selection switches SPST _1, SPST _3, SPST _2, SPST _4 to be all turned on. If only the LTE B1 band is needed to be operated, the processing module 50 may control the SPST _1 and SPST _3 to be turned on, and control the SPST _2 and SPST _4 to be turned off. If only the LTE B3 band is needed, the processing module 50 may control the SPST _2 and SPST _4 to be turned on, and control the SPST _1 and SPST _3 to be turned off.
In some embodiments, optionally, the radio frequency module may further include a power amplification module. For example, as shown in fig. 2, the power amplifying module 60 is connected in series between the transmitting terminal TX of the rf transceiver module 10 and the input feeding terminal of the multiband selective transmission filtering module 20. The power amplifying module 60 is used for amplifying the radio frequency signal sent by the radio frequency transceiver module to increase the transmitting power. When the multi-band radio frequency signal needs to be filtered, only one power amplification module is needed to be arranged, and a power amplification module does not need to be arranged for each frequency band, so that the multi-band radio frequency signal filtering device is simple in structure and low in cost.
In some embodiments, optionally, a coupler 70 is also included. For example, as shown in fig. 2, the coupler 70 is connected in series between the antenna 40 and the output feed terminal of the multiband selective transmission filter module 20. The coupling terminal of the coupler 70 is electrically connected to the feedback terminal FB of the rf transceiver module 10. The coupler 70 is used for obtaining the reflected power of the antenna 40 and feeding back the reflected power to the feedback terminal FB. The processing module 50 can determine whether the rf module is faulty according to the reflected power. For example, the reflected power is smaller than the minimum value of the preset reflected power range, which indicates that the multiband selective transmission filtering module is possibly damaged. If the reflected power is larger than the maximum value of the preset reflected power range, the antenna is not accurately connected.
The embodiment of the invention also provides electronic equipment which comprises the radio frequency module in any embodiment. The invention comprises the radio frequency module in any embodiment, so the invention has the same or corresponding beneficial effects with the radio frequency module in each embodiment.
The embodiment of the invention also provides a radio frequency module control method, which can be applied to the radio frequency module described in any embodiment. Fig. 6 is a schematic flowchart of a radio frequency module control method according to an embodiment of the present invention, where as shown in fig. 6, the method includes:
and S110, acquiring a frequency band selection signal.
And S120, controlling the multi-band selection transmission filtering module to be in a frequency band selection conduction mode according to the frequency band selection signal.
The user can generate a frequency band selection signal through the external control equipment according to the actual working requirement, so that the processing module of the radio frequency module controls the multi-band selection transmitting and filtering module of the radio frequency module to be in a frequency band selection conduction mode according to the frequency band selection signal after acquiring the frequency band selection signal. For example, the selected frequency band signal is an LTE B1 frequency band and an LTE B3 frequency band for the selected frequency band. Then the multiband selective transmission filtering module can be controlled to be in a conduction mode of an LTE B1 frequency band and an LTE B3 frequency band.
When the multi-band radio frequency signal needs to be filtered, for example, when an LTE carrier aggregation function and a 4G and 5G dual-connection function are realized, the multi-band selective transmitting and filtering module can be controlled to be in a corresponding selective frequency band conduction mode, so that a radio frequency receiving and transmitting module does not need to be arranged for each frequency band, and only an input feed end of the multi-band selective transmitting and filtering module needs to be connected with a receiving end of one radio frequency receiving and transmitting module. Therefore, the structure of the radio frequency module can be simplified, and the cost is low.
In some embodiments, optionally, the radio frequency module further includes a coupler; the coupler is connected in series between the antenna and the output feed end of the multi-band selective transmission filtering module. The coupling end of the coupler is electrically connected with the feedback end of the radio frequency transceiving module. The coupler is used for acquiring the reflected power of the antenna and feeding the reflected power back to the feedback end. The method may further comprise:
acquiring the reflected power of an antenna;
and judging whether the radio frequency module breaks down or not according to the reflected power.
For example, the reflected power of the antenna sent by the coupler is obtained, and whether the radio frequency module has a fault is determined according to the reflected power. For example, the reflected power is smaller than the minimum value of the preset reflected power range, which indicates that the multi-band selective transmission filtering module is possibly damaged. And if the reflected power is larger than the maximum value of the preset reflected power range, the antenna is not accurately connected.
In some embodiments, optionally, the multiband selective transmitting and filtering module may include a resonant body, an N-type resonant stub, and an N-type selection switch. The ith type resonance branch is electrically connected with the resonance body through the ith type selection switch. The lengths of different types of resonance branches are different. When the i-th type selection switch is switched on, the multi-band selection transmission filtering module switches on the i-th frequency band signal; when the ith type selection switch is turned off, the multi-band frequency selection transmission filtering module cuts off the ith frequency band signal; wherein N is a positive integer greater than or equal to 2; n is more than or equal to i and more than or equal to 1. For example, see fig. 2, which is not described herein again.
Correspondingly, step S120 controls the multiband selective transmit filter module to be in a selective band conducting mode according to the selective band signal, which may include:
and controlling the corresponding class selection switch of the selected frequency band in the selected frequency band signal to be switched on and controlling the non-corresponding class selection switch of the selected frequency band to be switched off according to the selected frequency band signal, so that the multi-band selection transmission filtering module is in a selected frequency band switching-on mode.
Taking the structure of fig. 2 as an example, the selection switch corresponding to the selected frequency band in the selected frequency band signal may be controlled to be turned on (for example, the selection switch corresponding to the selected frequency band in fig. 2 is the type 1 selection switch), and the selection switch not corresponding to the selected frequency band may be controlled to be turned off (for example, the selection switch not corresponding to the selected frequency band in fig. 2 is the type 2 selection switch), so that the multiband selective transmission filter module is in the selected frequency band on mode (for example, the type 1 selection switch in fig. 2 is turned on, and when the type 2 selection switch is turned off, the multiband selective transmission filter module is in the type 1 frequency band on mode).
In one embodiment, there is also provided a computer readable storage medium having a computer program stored thereon, the computer program when executed by a processor implementing the steps of:
acquiring a selected frequency band signal;
and controlling the multi-band selection transmission filtering module to be in a frequency band selection conduction mode according to the frequency band selection signal.
In one embodiment, the computer program when executed by the processor further performs the steps of:
acquiring the reflected power of an antenna;
and judging whether the radio frequency module breaks down or not according to the reflected power.
In one embodiment, the computer program when executed by the processor further performs the steps of: and controlling the corresponding class selection switch of the selected frequency band in the selected frequency band signal to be switched on and controlling the non-corresponding class selection switch of the selected frequency band to be switched off according to the selected frequency band signal, so that the multi-band selective transmission filtering module is in a selected frequency band switching-on mode.
When the multi-band radio frequency signal needs to be filtered, for example, when an LTE carrier aggregation function and a 4G and 5G dual-connection function are realized, the multi-band selective transmitting and filtering module can be controlled to be in a corresponding selective frequency band conduction mode through control, so that a radio frequency receiving and transmitting module does not need to be arranged for each frequency band, and only an input feed end of the multi-band selective transmitting and filtering module needs to be connected with a receiving end of one radio frequency receiving and transmitting module. Therefore, the structure of the radio frequency module can be simplified, and the cost is low.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above may be implemented by hardware instructions of a computer program, which may be stored in a non-volatile computer-readable storage medium, and when executed, may include the processes of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the embodiments provided herein may include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM is available in many forms, such as Static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), and the like.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.
Claims (9)
1. A radio frequency module, comprising:
the device comprises a radio frequency transceiving module, a multi-band selective transmitting and filtering module, a plurality of single-band receiving and filtering modules, an antenna and a processing module;
the transmitting end of the radio frequency transceiving module is electrically connected with the input feed end of the multi-band selective transmitting and filtering module; the output feed end of the multi-band selective transmission filtering module is electrically connected with the antenna; the radio frequency transceiving module comprises a plurality of receiving ends; each receiving end is electrically connected with the antenna through the single-frequency-band receiving and filtering modules in one-to-one correspondence; the processing module is electrically connected with the multi-band selective transmitting and filtering module; the processing module is used for responding to a frequency band selection signal to control the multi-band selection transmission filtering module to be in a frequency band selection conduction mode;
the multi-band selective transmitting and filtering module comprises a resonance body, N types of resonance branches and N types of selection switches;
the ith type resonance branch is electrically connected with the resonance body through an ith type selection switch; the lengths of the different resonant branches are different; when the ith type selection switch is switched on, the multiband selection transmission filtering module switches on an ith frequency band signal; when the i-th selection switch is closed, the multi-band selection transmission filtering module cuts off the i-th band signal;
the processing module is used for responding to the frequency band selection signal to control the corresponding class selection switch of the selected frequency band to be switched on and the non-corresponding class selection switch of the selected frequency band to be switched off so as to enable the multi-band selective transmission filtering module to be in a frequency band selection switching-on mode;
wherein N is a positive integer greater than or equal to 2; n is more than or equal to i and more than or equal to 1.
2. The radio frequency module of claim 1, further comprising a power amplification module; the power amplification module is connected in series between the transmitting end of the radio frequency transceiving module and the input feed end of the multi-band selective transmitting and filtering module.
3. The radio frequency module of claim 1, further comprising a coupler; the coupler is connected in series between the antenna and the output feed end of the multi-band selective transmission filtering module; the coupling end of the coupler is electrically connected with the feedback end of the radio frequency transceiving module; the coupler is used for acquiring the reflected power of the antenna and feeding the reflected power back to the feedback end; the processing module is used for judging whether the radio frequency module has a fault according to the reflected power.
4. The radio frequency module of claim 1, wherein the resonant body comprises M subresonant bodies; each type of resonance branch comprises M sub-resonance branches; each type of selection switch comprises M sub-selection switches; the jth sub-resonance branch of the ith resonance branch is electrically connected with the jth sub-resonance body through the jth sub-selection switch of the ith selection switch;
wherein M is a positive integer greater than or equal to 2; m is more than or equal to j and more than or equal to 1.
5. An electronic device comprising the radio frequency module of any one of claims 1-4.
6. A control method of radio frequency module is characterized in that the method is applied to the radio frequency module of any one of claims 1-4; the method comprises the following steps:
acquiring a selected frequency band signal;
controlling the multi-band selection transmission filtering module to be in a frequency band selection conduction mode according to the frequency band selection signal;
and controlling the corresponding class selection switch of the selected frequency band to be switched on according to the selected frequency band signal, and switching off the non-corresponding class selection switch of the selected frequency band so that the multi-band selection transmission filtering module is in a selected frequency band switching-on mode.
7. The method of claim 6, wherein the radio frequency module further comprises a coupler; the coupler is connected in series between the antenna and the output feed end of the multi-band selective transmission filtering module; the coupling end of the coupler is electrically connected with the feedback end of the radio frequency transceiving module; the coupler is used for acquiring the reflected power of the antenna and feeding the reflected power back to the feedback end; the method further comprises the following steps:
acquiring the reflected power of an antenna;
and judging whether the radio frequency module fails according to the reflected power.
8. The method of claim 6, wherein the multiband selective transmit filter module comprises a resonant body, a class N resonant stub, and a class N selection switch; the ith type resonance branch is electrically connected with the resonance body through an ith type selection switch; the lengths of the different resonant branches are different; when the i-th type selection switch is switched on, the multi-band selection transmission filtering module switches on the i-th frequency band signal; when the i-th type selection switch is closed, the multi-band selection transmission filtering module cuts off the i-th frequency band signal; wherein N is a positive integer greater than or equal to 2; n is more than or equal to i and more than or equal to 1;
the controlling the multi-band selection transmission filtering module to be in a frequency band selection conduction mode according to the frequency band selection signal comprises the following steps:
and controlling the corresponding class selection switch of the selected frequency band in the selected frequency band signal to be switched on and controlling the non-corresponding class selection switch of the selected frequency band to be switched off according to the selected frequency band signal, so that the multi-band selective transmission filtering module is in a selected frequency band switching-on mode.
9. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 6 to 8.
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