CN109714067B - System frequency band switching method and device, storage medium, receiving end and terminal - Google Patents
System frequency band switching method and device, storage medium, receiving end and terminal Download PDFInfo
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- CN109714067B CN109714067B CN201811476770.8A CN201811476770A CN109714067B CN 109714067 B CN109714067 B CN 109714067B CN 201811476770 A CN201811476770 A CN 201811476770A CN 109714067 B CN109714067 B CN 109714067B
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Abstract
The invention discloses a system frequency band switching method, which comprises the following steps: detecting a feedback voltage acted on the radio frequency head by a system, and acquiring a feedback voltage value on the radio frequency head; generating a radio frequency switching signal based on the feedback voltage value; and controlling the radio frequency switch to be configured on a frequency band passage corresponding to the feedback voltage value based on the radio frequency switch signal, wherein the frequency band passage is a signal connection passage between the antenna and the radio frequency head. In the embodiment of the invention, the radio frequency isolation and switching of a plurality of frequency bands are realized. The embodiment of the invention also provides a system frequency band switching device, a storage medium, a receiving end and a communication terminal.
Description
Technical Field
The present invention relates to the technical field of radio frequency band switching in communications, and in particular, to a method and an apparatus for system frequency band switching, a storage medium receiving end, and a communication terminal.
Background
In the existing communication tools, an active antenna on a general communication tool only works on a fixed frequency band, so that one communication tool can often only carry out communication work on one fixed frequency band, and the requirement of supporting communication of multiple frequency bands under different environments or different working requirements cannot be met; or in the existing multi-band communication tool, because the radio frequency isolation technology between different frequency bands cannot reach, in the same communication tool, radio frequency signals between different frequency bands interfere with each other, so that the communication effect is poor, and the communication requirement of the current user cannot be met.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a system frequency band switching method, a device, a storage medium receiving end and a communication terminal, which are used for selecting a radio frequency band received by an active antenna and realizing communication functions under different frequency bands.
In order to solve the above technical problem, an embodiment of the present invention provides a method for switching a system frequency band, where the method includes:
detecting a feedback voltage acted on the radio frequency head by a system, and acquiring a feedback voltage value on the radio frequency head;
generating a radio frequency switching signal based on the feedback voltage value;
and controlling the radio frequency switch to be configured on a frequency band passage corresponding to the feedback voltage value based on the radio frequency switch signal, wherein the frequency band passage is a signal connection passage between the antenna and the radio frequency head.
Optionally, the generating the radio frequency switching signal based on the feedback voltage value includes:
acquiring a current frequency band channel in the frequency band channels based on the feedback voltage value;
and sending the current affiliated frequency band channel of the feedback voltage value to a switch control unit, wherein the switch control unit generates a control instruction based on the current affiliated frequency band channel and sends the control instruction to a radio frequency switch.
Optionally, the radio frequency switch includes the radio frequency switch disposed at an input end of the radio frequency path and/or the radio frequency switch disposed at an output end of the radio frequency path.
Optionally, the obtaining of the current frequency band path in the frequency band path based on the feedback voltage value includes:
matching the feedback voltage value with a preset voltage value of a frequency band channel;
if the matching is passed, acquiring a radio frequency channel corresponding to a preset voltage value matched with the feedback voltage value as a current frequency band channel;
and if the matching is not passed, feeding back the detected feedback voltage value as abnormal voltage.
Optionally, the generating, by the switch control unit, a control instruction based on the current frequency band path includes:
and the switch control unit changes the control logic according to the current frequency band channel of the feedback voltage value and generates a control instruction.
Optionally, the frequency band path includes any one frequency band path or a combination of multiple frequency band paths in a Beidou BDS B1 single-mode frequency band path, a GPS L1 single-mode frequency band path, and a BDS/GPS dual-mode frequency band path;
if a plurality of frequency band paths exist in the frequency band path, the frequency band allowed by any one of the frequency band paths on the plurality of paths is different.
Optionally, the frequency band path is sequentially provided with a radio frequency surface acoustic wave filter, a radio frequency low noise amplifier and a radio frequency surface acoustic wave filter from a radio frequency band input end to a radio frequency band output end; the frequency band channel is used for sequentially carrying out-of-band filtering, signal amplification and out-of-band filtering processing on an input radio frequency band.
Optionally, the controlling, based on the radio frequency switch signal, the radio frequency switch to be configured on the frequency band path corresponding to the feedback voltage value includes:
and responding to a control instruction by the radio frequency switch, and configuring the radio frequency switch to a current frequency band channel of the feedback voltage value.
Optionally, the configuring, by the radio frequency switch responding to the control instruction, the radio frequency switch to the current frequency band path to which the feedback voltage value belongs includes:
after the radio frequency switch receives the control instruction, analyzing and responding to the control instruction;
and configuring the radio frequency switch to the current frequency band path of the feedback voltage value to enable the current frequency band path to be conducted.
In addition, an embodiment of the present invention further provides a system frequency band switching device, where the device includes:
a voltage detection unit: the system is used for detecting the feedback voltage acted on the radio frequency head by the system and acquiring the feedback voltage value on the radio frequency head;
a switch control unit: for generating a radio frequency switching signal based on the feedback voltage value;
radio frequency switch configuration unit: and the frequency band circuit is used for controlling the radio frequency switch to be configured on a frequency band circuit corresponding to the feedback voltage value based on the radio frequency switch signal, and the frequency band circuit is a signal connection circuit between the antenna and the radio frequency head.
In addition, an embodiment of the present invention further provides a readable storage medium, where an executable program is stored, and when the program is executed by a processor, the method for switching a system frequency band by detecting a feedback voltage according to any one of the above-mentioned embodiments is implemented.
In addition, an embodiment of the present invention further provides a radio frequency receiving end, where the radio frequency receiving end includes:
an antenna;
a switch controller;
one or more radio frequency switches;
one or more frequency band channels;
a voltage detection unit;
a radio frequency head; wherein the radio frequency receiving end is configured to: the method for switching the system frequency band by detecting the feedback voltage is implemented.
In addition, an embodiment of the present invention further provides a communication terminal, where the communication terminal includes:
one or more processors;
a memory;
one or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the one or more processors, the one or more applications configured to: the method for switching the system frequency band by detecting the feedback voltage is implemented.
In the embodiment of the invention, the working frequency band of the system is switched by detecting the feedback voltage of the system, and communication work can be carried out in a system of a communication terminal under various modal paths such as a Beidou BDS B1 single-mode frequency band path, a GPS L1 single-mode frequency band path, a BDS/GPS dual-mode frequency band path and the like; and each channel is provided with the radio frequency surface acoustic wave filter, the radio frequency low-noise amplifier and the radio frequency surface acoustic wave filter once, so that the selection of a radio frequency band and the isolation of other radio frequency bands can be realized in the switching process of different radio frequency bands, the interference of other radio frequency bands in the communication process is reduced, and the communication quality is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a system frequency band switching method according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a system band switching method according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of a system band switching apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a system band switching apparatus according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of a radio frequency receiving end according to an embodiment of the present invention;
fig. 6 is a schematic structural component diagram of a communication terminal in the embodiment of the present invention.
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1, fig. 1 is a flow chart illustrating a system band switching method according to an embodiment of the present invention.
As shown in fig. 1, a method for switching system frequency bands includes:
s11: detecting a feedback voltage acted on the radio frequency head by a system, and acquiring a feedback voltage value on the radio frequency head;
in the specific implementation process of the invention, a system in the communication terminal generates a feedback voltage, transmits the feedback voltage to the radio frequency head of the voltage physical channel, and detects the feedback voltage value of the feedback voltage transmitted to the radio frequency head through the voltage detection unit; the voltage detection unit may be an ADC (analog-to-digital converter) or a logic gate.
S12: generating a radio frequency switching signal based on the feedback voltage value;
in the specific implementation process of the invention, the current affiliated frequency band channel matched with the current feedback voltage value in all frequency band channels is obtained through the feedback voltage value, then a control instruction is generated according to the current affiliated frequency band channel, and the radio frequency switch is controlled through the control instruction.
Further, the generating the radio frequency switching signal based on the feedback voltage value includes: acquiring a current frequency band channel in the frequency band channels based on the feedback voltage value; and sending the current affiliated frequency band channel of the feedback voltage value to a switch control unit, wherein the switch control unit generates a control instruction based on the current affiliated frequency band channel and sends the control instruction to a radio frequency switch.
Further, the obtaining of a current frequency band path in the frequency band paths based on the feedback voltage value includes: matching the feedback voltage value with a preset voltage value of a frequency band channel; if the matching is passed, acquiring a radio frequency channel corresponding to a preset voltage value matched with the feedback voltage value as a current frequency band channel; and if the matching is not passed, feeding back the detected feedback voltage value as abnormal voltage.
Specifically, after the voltage detection unit detects the feedback voltage value, the feedback voltage value is matched with the preset voltage values of the frequency band channels, whether the feedback voltage value is within the range of the voltage value of one frequency band channel in the preset voltage values of the frequency band channels is matched, so that the radio frequency channel corresponding to the preset voltage value matched with the feedback voltage value is obtained as the current frequency band channel, if the voltage value matched with the threshold value is not found in mutual matching, the detected feedback voltage value is fed back to the system as abnormal voltage, and a user is reminded to check whether the feedback voltage generated by the system is abnormal or the voltage detection unit is abnormal.
Further, the generating of the control instruction by the switch control unit based on the current frequency band path includes: and the switch control unit changes the control logic according to the current frequency band channel of the feedback voltage value and generates a control instruction.
Specifically, the switch control unit generates a control instruction based on the current frequency band path, and the switch control unit changes control logic according to the current frequency band path of the feedback voltage value to generate the control instruction; after the current affiliated frequency band channel of the feedback voltage value is obtained, the current affiliated frequency band channel is sent to a switch control unit, and the switch control unit generates a control instruction according to the received current affiliated frequency band channel and sends the control instruction to a radio frequency switch; wherein, the control command is generated by the switch control unit through changing the control logic.
Further, the radio frequency switch comprises the radio frequency switch arranged at the input end of the radio frequency path and/or the radio frequency switch arranged at the output end of the radio frequency path.
Specifically, the number of the radio frequency switches may be one or two, and if the number of the radio frequency switches is one, the radio frequency switches may be arranged at the input end of the radio frequency path or the output end of the video path; if the number of the radio frequency switches is two, one is arranged at the input end of the radio frequency channel, and the other is arranged at the output end of the radio frequency channel; in the implementation process of the embodiment, one or more radio frequency paths may exist, and the radio frequency bands allowed to pass through each radio frequency path are different; when a radio frequency switch is arranged at the input end of the radio frequency channel, the radio frequency switch arranged at the input end of the radio frequency channel is controlled to be switched to the corresponding radio frequency channel through a control instruction, and the corresponding radio frequency channel is allowed to enter the corresponding radio frequency channel through the radio frequency switch and reach the radio frequency head; when the radio frequency switch is arranged at the output end of the radio frequency path, the radio frequency antenna receives radio frequency bands, because each radio frequency path can only pass through the corresponding radio frequency band, the radio frequency band received by the radio frequency antenna passes through the corresponding radio frequency path and reaches the radio frequency switch, at the moment, the radio frequency switch is switched to the corresponding path according to the control instruction, if the radio frequency path controlled to be switched is inconsistent with the path through which the radio frequency band received by the radio frequency antenna passes, the radio frequency band cannot reach a radio frequency head, and otherwise, the radio frequency band reaches the radio frequency head; if the input end and the output end of the radio frequency channel are both provided with the radio frequency switches, the same control instruction is adopted to control the radio frequency switches, the two radio frequency switches are switched to the same radio frequency channel at the same time, if the radio frequency band received by the radio frequency antenna is the same as the radio frequency band allowed to pass through by the conducted radio frequency channel, the radio frequency band received by the radio frequency antenna can reach the radio frequency head through the radio frequency channel, and the double-radio-frequency switch is adopted to perform double-switch control on the radio frequency channel, so that the control precision is higher.
Further, the frequency band path comprises any one frequency band path or combination of a plurality of frequency band paths in a Beidou BDS B1 single-mode frequency band path, a GPS L1 single-mode frequency band path and a BDS/GPS dual-mode frequency band path; if a plurality of frequency band paths exist in the frequency band path, the frequency band allowed by any one of the frequency band paths on the plurality of paths is different.
Specifically, the radio frequency passage may be a combination of frequency band passages of any one or more radio frequency bands of a Beidou BDS B1 single-mode radio frequency, a GPS L1 single-mode radio frequency and a BDS/GPS dual-mode radio frequency; if the frequency band is a plurality of frequency band channels, the radio frequency bands which can pass through each frequency band channel are different, for example, one frequency band can pass through 5Hz, the other frequency band can pass through 4.5Hz, when the received frequency band is 5Hz, the frequency band can only pass through the frequency band channel which runs through 5Hz, but can not pass through the frequency band channel which runs through 4.5Hz, and if the received frequency band is 6Hz, the frequency band can not pass through the frequency band channels which run through 5Hz and 4.5 Hz.
Furthermore, the frequency band channel is sequentially provided with a radio frequency surface acoustic wave filter, a radio frequency low noise amplifier and a radio frequency surface acoustic wave filter from a radio frequency band input end to a radio frequency band output end; the frequency band channel is used for sequentially carrying out-of-band filtering, signal amplification and out-of-band filtering processing on an input radio frequency band.
Specifically, a specific radio frequency SAW (radio frequency surface acoustic wave filter) and a radio frequency low noise amplifier realize the isolation of a radio frequency band in a channel, so that the radio frequency band is not interfered by other frequency bands; wherein, each channel is provided with a radio frequency SAW, a radio frequency LNA (radio frequency low noise amplifier) and a radio frequency SAW in turn at the input end of a radio frequency band; the mutual influence of each frequency band among the frequency band channels can be isolated; therefore, the radio frequency surface acoustic wave filter, the radio frequency low noise amplifier and the radio frequency surface acoustic wave filter are adopted to carry out-of-band filtering, signal amplification and out-of-band filtering processing on the input frequency band in sequence; if there are multiple paths in the band path, the band allowed by any of the multiple paths is different.
Specifically, the radio frequency band is received by a radio frequency antenna, which is any one of a single-band radio frequency antenna, a multi-band radio frequency antenna, or a full-band antenna; in the embodiment of the invention, a full-band radio frequency antenna is adopted, specifically a GNSS antenna, and can receive radio frequency band signals of a single-mode Beidou BDS B1, a single-mode GPS L1, a dual-mode BDS GPS and the like; after receiving the radio frequency band signal, the antenna sends the radio frequency band signal to a radio frequency switch at the input end of a radio frequency channel, the radio frequency switch accesses the radio frequency band signal into a corresponding frequency channel according to a control instruction, out-band filtering, signal amplification and out-of-band filtering are sequentially carried out, then the radio frequency band signal is sent to a radio frequency switch at the output end of the frequency channel, and the switch is switched on according to the control instruction and transmits the radio frequency band signal to a radio frequency head.
S13: and controlling the radio frequency switch to be configured on a frequency band passage corresponding to the feedback voltage value based on the radio frequency switch signal, wherein the frequency band passage is a signal connection passage between the antenna and the radio frequency head.
In this specific implementation process, the controlling, based on the rf switch signal, the rf switch to be configured on the frequency band path corresponding to the feedback voltage value includes: and responding to a control instruction by the radio frequency switch, and configuring the radio frequency switch to a current frequency band channel of the feedback voltage value.
Further, the step of configuring, by the radio frequency switch in response to a control instruction, the radio frequency switch to a current frequency band path to which the feedback voltage value belongs includes: after the radio frequency switch receives the control instruction, analyzing and responding to the control instruction; and configuring the radio frequency switch to the current frequency band path of the feedback voltage value to enable the current frequency band path to be conducted.
Specifically, the control instruction generated by the switch control unit controls the radio frequency switch at the same time, that is, the radio frequency switch receives the control instruction in the radio frequency switch, analyzes and responds to the control instruction, and configures the radio frequency switch to the current frequency band path to which the feedback voltage value belongs according to the instruction content in the control instruction, so that the current frequency band path to which the radio frequency switch belongs is conducted, and the configuration of the current frequency band path to which the radio frequency switch belongs is completed, thereby completing the switching of the system frequency band; and the frequency band path is a signal connection path between the antenna and the radio frequency head.
In the embodiment of the invention, the working frequency band of the system is switched by detecting the feedback voltage of the system, and communication work can be carried out in a system of a communication terminal under various modal paths such as a Beidou BDS B1 single-mode frequency band path, a GPS L1 single-mode frequency band path, a BDS/GPS dual-mode frequency band path and the like; and each channel is provided with the radio frequency surface acoustic wave filter, the radio frequency low-noise amplifier and the radio frequency surface acoustic wave filter once, so that the selection of a radio frequency band and the isolation of other radio frequency bands can be realized in the switching process of different radio frequency bands, the interference of other radio frequency bands in the communication process is reduced, and the communication quality is improved.
Examples
Referring to fig. 2, fig. 2 is a flow chart illustrating a system band switching method according to another embodiment of the present invention.
As shown in fig. 2, a method for switching a system frequency band by detecting a feedback voltage, the method includes:
the system generates a feedback voltage;
detecting a feedback voltage generated by the system through an ADC voltage detection unit to obtain a feedback voltage value;
matching and judging the system feedback voltage value, and judging a frequency band channel to which the feedback voltage value belongs;
acquiring a frequency band channel to which the system feedback voltage value belongs in the matching judgment, or feeding back and detecting that the system feedback voltage value is abnormal if the matching is not successful;
according to the frequency band channel to which the system feedback voltage value belongs in the matching judgment, the switch control unit generates a control command through the control logic, and the radio frequency switch at the frequency band input end is controlled to be conducted to the corresponding radio frequency channel through the control command;
meanwhile, the switch control unit also generates the same control instruction to control the radio frequency switch at the radio frequency output end to conduct the relevant frequency band, so as to complete the configuration of the frequency band channel.
In the detailed embodiments of detecting the feedback voltage, generating the control command according to the feedback voltage, and controlling the rf switch, reference may be made to the above embodiments in detail, which are not described herein again.
In the embodiment of the invention, the working frequency band of the real system is switched by detecting the feedback voltage of the system, and the communication work can be realized in a system of a communication terminal under various modal paths such as a Beidou BDS B1 single-mode frequency band path, a GPS L1 single-mode frequency band path, a BDS/GPS dual-mode frequency band path and the like; and each channel is provided with the radio frequency surface acoustic wave filter, the radio frequency low-noise amplifier and the radio frequency surface acoustic wave filter once, so that the selection of a radio frequency band and the isolation of other radio frequency bands can be realized in the switching process of different radio frequency bands, the interference of other radio frequency bands in the communication process is reduced, and the communication quality is improved.
Examples
Referring to fig. 3, fig. 3 is a schematic structural diagram of a system band switching device according to an embodiment of the present invention.
As shown in fig. 3, an apparatus for switching a system frequency band by detecting a feedback voltage, the apparatus comprising:
voltage detection unit 11: the system is used for detecting the feedback voltage acted on the radio frequency head by the system and acquiring the feedback voltage value on the radio frequency head;
in the specific implementation process of the invention, a system in the communication terminal generates a feedback voltage, transmits the feedback voltage to the radio frequency head of the voltage physical channel, and detects the feedback voltage value of the feedback voltage transmitted to the radio frequency head through the voltage detection unit; the voltage detection unit may be an ADC (analog-to-digital converter) or a logic gate.
The switch control unit 12: for generating a radio frequency switching signal based on the feedback voltage value;
in the specific implementation process of the invention, the current affiliated frequency band channel matched with the current feedback voltage value in all frequency band channels is obtained through the feedback voltage value, then a control instruction is generated according to the current affiliated frequency band channel, and the radio frequency switch is controlled through the control instruction.
Further, the generating the radio frequency switching signal based on the feedback voltage value includes: acquiring a current frequency band channel in the frequency band channels based on the feedback voltage value; and sending the current affiliated frequency band channel of the feedback voltage value to a switch control unit, wherein the switch control unit generates a control instruction based on the current affiliated frequency band channel and sends the control instruction to a radio frequency switch.
Further, the obtaining of a current frequency band path in the frequency band paths based on the feedback voltage value includes: matching the feedback voltage value with a preset voltage value of a frequency band channel; if the matching is passed, acquiring a radio frequency channel corresponding to a preset voltage value matched with the feedback voltage value as a current frequency band channel; and if the matching is not passed, feeding back the detected feedback voltage value as abnormal voltage.
Specifically, after the voltage detection unit detects the feedback voltage value, the feedback voltage value is matched with the preset voltage values of the frequency band channels, whether the feedback voltage value is within the range of the voltage value of one frequency band channel in the preset voltage values of the frequency band channels is matched, so that the radio frequency channel corresponding to the preset voltage value matched with the feedback voltage value is obtained as the current frequency band channel, if the voltage value matched with the threshold value is not found in mutual matching, the detected feedback voltage value is fed back to the system as abnormal voltage, and a user is reminded to check whether the feedback voltage generated by the system is abnormal or the voltage detection unit is abnormal.
Further, the generating of the control instruction by the switch control unit based on the current frequency band path includes: and the switch control unit changes the control logic according to the current frequency band channel of the feedback voltage value and generates a control instruction.
Specifically, the switch control unit generates a control instruction based on the current frequency band path, and the switch control unit changes control logic according to the current frequency band path of the feedback voltage value to generate the control instruction; after the current affiliated frequency band channel of the feedback voltage value is obtained, the current affiliated frequency band channel is sent to a switch control unit, and the switch control unit generates a control instruction according to the received current affiliated frequency band channel and sends the control instruction to a radio frequency switch; wherein, the control command is generated by the switch control unit through changing the control logic.
Further, the radio frequency switch comprises the radio frequency switch arranged at the input end of the radio frequency path and/or the radio frequency switch arranged at the output end of the radio frequency path.
Specifically, the number of the radio frequency switches may be one or two, and if the number of the radio frequency switches is one, the radio frequency switches may be arranged at the input end of the radio frequency path or the output end of the video path; if the number of the radio frequency switches is two, one is arranged at the input end of the radio frequency channel, and the other is arranged at the output end of the radio frequency channel; in the implementation process of the embodiment, one or more radio frequency paths may exist, and the radio frequency bands allowed to pass through each radio frequency path are different; when a radio frequency switch is arranged at the input end of the radio frequency channel, the radio frequency switch arranged at the input end of the radio frequency channel is controlled to be switched to the corresponding radio frequency channel through a control instruction, and the corresponding radio frequency channel is allowed to enter the corresponding radio frequency channel through the radio frequency switch and reach the radio frequency head; when the radio frequency switch is arranged at the output end of the radio frequency path, the radio frequency antenna receives radio frequency bands, because each radio frequency path can only pass through the corresponding radio frequency band, the radio frequency band received by the radio frequency antenna passes through the corresponding radio frequency path and reaches the radio frequency switch, at the moment, the radio frequency switch is switched to the corresponding path according to the control instruction, if the radio frequency path controlled to be switched is inconsistent with the path through which the radio frequency band received by the radio frequency antenna passes, the radio frequency band cannot reach a radio frequency head, and otherwise, the radio frequency band reaches the radio frequency head; if the input end and the output end of the radio frequency channel are both provided with the radio frequency switches, the same control instruction is adopted to control the radio frequency switches, the two radio frequency switches are switched to the same radio frequency channel at the same time, if the radio frequency band received by the radio frequency antenna is the same as the radio frequency band allowed to pass through by the conducted radio frequency channel, the radio frequency band received by the radio frequency antenna can reach the radio frequency head through the radio frequency channel, and the double-radio-frequency switch is adopted to perform double-switch control on the radio frequency channel, so that the control precision is higher.
Further, the frequency band path comprises any one frequency band path or combination of a plurality of frequency band paths in a Beidou BDS B1 single-mode frequency band path, a GPS L1 single-mode frequency band path and a BDS/GPS dual-mode frequency band path; if a plurality of frequency band paths exist in the frequency band path, the frequency band allowed by any one of the frequency band paths on the plurality of paths is different.
Specifically, the radio frequency passage may be a combination of frequency band passages of any one or more radio frequency bands of a Beidou BDS B1 single-mode radio frequency, a GPS L1 single-mode radio frequency and a BDS/GPS dual-mode radio frequency; if the frequency band is a plurality of frequency band channels, the radio frequency bands which can pass through each frequency band channel are different, for example, one frequency band can pass through 5Hz, the other frequency band can pass through 4.5Hz, when the received frequency band is 5Hz, the frequency band can only pass through the frequency band channel which runs through 5Hz, but can not pass through the frequency band channel which runs through 4.5Hz, and if the received frequency band is 6Hz, the frequency band can not pass through the frequency band channels which run through 5Hz and 4.5 Hz.
Furthermore, the frequency band channel is sequentially provided with a radio frequency surface acoustic wave filter, a radio frequency low noise amplifier and a radio frequency surface acoustic wave filter from a radio frequency band input end to a radio frequency band output end; the frequency band channel is used for sequentially carrying out-of-band filtering, signal amplification and out-of-band filtering processing on an input radio frequency band.
Specifically, a specific radio frequency SAW (radio frequency surface acoustic wave filter) and a radio frequency low noise amplifier realize the isolation of a radio frequency band in a channel, so that the radio frequency band is not interfered by other frequency bands; wherein, each channel is provided with a radio frequency SAW, a radio frequency LNA (radio frequency low noise amplifier) and a radio frequency SAW in turn at the input end of a radio frequency band; the mutual influence of each frequency band among the frequency band channels can be isolated; therefore, the radio frequency surface acoustic wave filter, the radio frequency low noise amplifier and the radio frequency surface acoustic wave filter are adopted to carry out-of-band filtering, signal amplification and out-of-band filtering processing on the input frequency band in sequence; if there are multiple paths in the band path, the band allowed by any of the multiple paths is different.
Specifically, the radio frequency band is received by a radio frequency antenna, which is any one of a single-band radio frequency antenna, a multi-band radio frequency antenna, or a full-band antenna; in the embodiment of the invention, a full-band radio frequency antenna is adopted, specifically a GNSS antenna, and can receive radio frequency band signals of a single-mode Beidou BDS B1, a single-mode GPS L1, a dual-mode BDS GPS and the like; after receiving the radio frequency band signal, the antenna sends the radio frequency band signal to a radio frequency switch at the input end of a radio frequency channel, the radio frequency switch accesses the radio frequency band signal into a corresponding frequency channel according to a control instruction, out-band filtering, signal amplification and out-of-band filtering are sequentially carried out, then the radio frequency band signal is sent to a radio frequency switch at the output end of the frequency channel, and the switch is switched on according to the control instruction and transmits the radio frequency band signal to a radio frequency head.
The radio frequency switch configuration unit 13: and the frequency band circuit is used for controlling the radio frequency switch to be configured on a frequency band circuit corresponding to the feedback voltage value based on the radio frequency switch signal, and the frequency band circuit is a signal connection circuit between the antenna and the radio frequency head.
In this specific implementation process, the controlling, based on the rf switch signal, the rf switch to be configured on the frequency band path corresponding to the feedback voltage value includes: and responding to a control instruction by the radio frequency switch, and configuring the radio frequency switch to a current frequency band channel of the feedback voltage value.
Further, the step of configuring, by the radio frequency switch in response to a control instruction, the radio frequency switch to a current frequency band path to which the feedback voltage value belongs includes: after the radio frequency switch receives the control instruction, analyzing and responding to the control instruction; and configuring the radio frequency switch to the current frequency band path of the feedback voltage value to enable the current frequency band path to be conducted.
Specifically, the control instruction generated by the switch control unit controls the radio frequency switch at the same time, that is, the radio frequency switch receives the control instruction in the radio frequency switch, analyzes and responds to the control instruction, and configures the radio frequency switch to the current frequency band path to which the feedback voltage value belongs according to the instruction content in the control instruction, so that the current frequency band path to which the radio frequency switch belongs is conducted, and the configuration of the current frequency band path to which the radio frequency switch belongs is completed, thereby completing the switching of the system frequency band; and the frequency band path is a signal connection path between the antenna and the radio frequency head.
In the embodiment of the invention, the working frequency band of the system is switched by detecting the feedback voltage of the system, and communication work can be carried out in a system of a communication terminal under various modal paths such as a Beidou BDS B1 single-mode frequency band path, a GPS L1 single-mode frequency band path, a BDS/GPS dual-mode frequency band path and the like; and each channel is provided with the radio frequency surface acoustic wave filter, the radio frequency low-noise amplifier and the radio frequency surface acoustic wave filter once, so that the selection of a radio frequency band and the isolation of other radio frequency bands can be realized in the switching process of different radio frequency bands, the interference of other radio frequency bands in the communication process is reduced, and the communication quality is improved.
Examples
Referring to fig. 4, fig. 4 is a schematic structural diagram of a system band switching device according to another embodiment of the present invention.
As shown in fig. 4, a system band switching apparatus includes: a system for generating a feedback voltage;
the radio frequency head is used for conducting the feedback voltage and the radio frequency band signal;
the voltage detection unit is used for monitoring a feedback voltage value of a feedback voltage generated by the system and transmitted by the radio frequency head; the voltage detection unit can be ADC (analog-to-digital converter) or logic gate detection;
the switch control unit is used for matching according to the checked feedback voltage value, acquiring a current frequency band channel corresponding to the feedback voltage value, generating a corresponding control instruction and controlling the radio frequency switch to be switched to the corresponding current frequency band channel;
the radio frequency switch is provided with two radio frequency switches which are respectively arranged at the input end and the output end of the radio frequency channel and used for receiving the control instruction generated and sent by the switch control unit, analyzing and corresponding to the control instruction and switching according to the control instruction; the control instruction controls the radio frequency switch by controlling an IO port or a level control mode;
the antenna is an active antenna and is used for receiving radio frequency band signals in the communication process; the active antenna can be a GNSS antenna and can receive radio frequency band signals of a single-mode Beidou BDS B1, a single-mode GPS L1, a dual-mode BDS GPS and the like;
each radio frequency channel sequentially comprises a radio frequency SAW (radio frequency surface acoustic wave filter), a radio frequency LNA (radio frequency low noise amplifier) and a radio frequency SAW (radio frequency surface acoustic wave filter) from a radio frequency band input end to a radio frequency band output end; wherein the content of the first and second substances,
the radio frequency SAW (radio frequency surface acoustic wave filter) has good frequency band selectivity and good out-of-band isolation capability, and is used for carrying out-of-band isolation on a frequency band, and when a radio frequency band signal passes through the radio frequency SAW, the out-of-band isolation is carried out;
a radio frequency LNA (radio frequency Low noise Amplifier) for amplifying low noise signals of the radio frequency band which is subjected to out-of-band isolation;
the radio frequency SAW (radio frequency surface acoustic wave filter) is used for carrying out-of-band filtering on a radio frequency band amplified by the low-noise signal so as to realize out-of-band isolation;
through the radio frequency channel, the selection and switching of the frequency and the channel of the radio frequency are realized.
In this embodiment, the implementation method in the above embodiment may be specifically referred to in the execution process between the hardware and the generated execution effect, and is not described herein again.
In the embodiment of the invention, the working frequency band of the system is switched by detecting the feedback voltage of the system, and communication work can be carried out in a system of a communication terminal under various modal paths such as a Beidou BDS B1 single-mode frequency band path, a GPS L1 single-mode frequency band path, a BDS/GPS dual-mode frequency band path and the like; and each channel is provided with the radio frequency surface acoustic wave filter, the radio frequency low-noise amplifier and the radio frequency surface acoustic wave filter once, so that the selection of a radio frequency band and the isolation of other radio frequency bands can be realized in the switching process of different radio frequency bands, the interference of other radio frequency bands in the communication process is reduced, and the communication quality is improved.
Examples
Referring to fig. 5, fig. 5 is a schematic structural diagram of a radio frequency receiving end according to an embodiment of the present invention.
As shown in fig. 5, a radio frequency receiving end includes:
an antenna 501;
a switch controller 506;
one or more radio frequency switches 502;
one or more frequency band channels 503;
a voltage detection unit 505;
a radio frequency head 504; wherein the radio frequency receiving end is configured to: the method for switching the system frequency band is implemented.
In the embodiment of the present invention, the provided radio frequency receiving end can implement the above-mentioned embodiment of providing the system frequency band switching method, and for specific function implementation, please refer to the description in the above-mentioned embodiment, which is not described herein again
Specifically, the rf receiver may include more or less components than those shown in fig. 5, or some components may be combined, and the structure shown in fig. 5 does not limit all rf receivers
Referring to fig. 6, fig. 6 is a schematic structural diagram of a communication terminal according to an embodiment of the present invention.
As shown in fig. 6, a communication terminal includes: a processor 602 and a memory 603. The structural elements shown in fig. 6 do not constitute a limitation of all communication terminals and may have more or fewer elements than those shown in fig. 6 or some of the elements may be combined.
In one embodiment, a communication terminal includes: one or more processors 602;
a memory 603;
one or more applications 601, wherein the one or more applications 601 are stored in the memory 603 and configured to be executed by the one or more processors 602, the one or more applications 601 configured to: the method for switching the system frequency band is implemented.
In the embodiment of the present invention, the provided communication terminal may implement the embodiment of the system frequency band switching method provided above, and for specific function implementation, please refer to the description in the embodiment above, which is not described herein again.
In the readable storage medium provided in the embodiment of the present invention, the readable storage medium stores an executable program, and when the program is executed by a processor, the method for switching the system frequency band by detecting the feedback voltage according to any technical scheme is implemented. The readable storage medium includes, but is not limited to, any type of disk including floppy disks, hard disks, optical disks, CD-ROMs, and magneto-optical disks, ROMs (Read-Only memories), RAMs (Random AcceSS memories), EPROMs (EraSable Programmable Read-Only memories), EEPROMs (Electrically EraSable Programmable Read-Only memories), flash memories, magnetic cards, or optical cards. That is, a storage device includes any medium that stores or transmits information in a form readable by a device (e.g., a computer, a cellular phone), and may be a read-only memory, a magnetic or optical disk, or the like.
In the embodiment of the invention, the working frequency band of the system is switched by detecting the feedback voltage of the system, and communication work can be carried out in a system of a communication terminal under various modal paths such as a Beidou BDS B1 single-mode frequency band path, a GPS L1 single-mode frequency band path, a BDS/GPS dual-mode frequency band path and the like; and each channel is provided with a radio frequency surface acoustic wave filter, a radio frequency low noise amplifier and a radio frequency surface acoustic wave filter, so that the selection of radio frequency bands and the isolation of other radio frequency bands can be realized in the switching process of different radio frequency bands, the interference of other radio frequency bands in the communication process is reduced, and the communication quality is improved.
In addition, the method, the apparatus, the storage medium, the radio frequency receiving end, and the communication terminal for switching the system frequency band provided by the embodiment of the present invention are described in detail, and a specific embodiment is used herein to explain the principle and the implementation manner of the present invention, and the description of the embodiment is 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 (13)
1. A method for switching system frequency bands, the method comprising:
detecting a feedback voltage acted on the radio frequency head by a system, and acquiring a feedback voltage value on the radio frequency head;
generating a radio frequency switching signal based on the feedback voltage value;
and controlling a radio frequency switch to be configured on a frequency band passage corresponding to the feedback voltage value based on the radio frequency switch signal, wherein the frequency band passage is a signal connection passage between the antenna and the radio frequency head.
2. The method of claim 1, wherein generating the radio frequency switching signal based on the feedback voltage value comprises:
acquiring a current frequency band channel in the frequency band channels based on the feedback voltage value;
and sending the current affiliated frequency band channel of the feedback voltage value to a switch control unit, wherein the switch control unit generates a control instruction based on the current affiliated frequency band channel and sends the control instruction to a radio frequency switch.
3. The method of claim 2, wherein the rf switch comprises an rf switch disposed at an input end of the band path and/or an rf switch disposed at an output end of the band path.
4. The method of claim 2, wherein the obtaining a current frequency band path of the frequency band paths based on the feedback voltage value comprises:
matching the feedback voltage value with a preset voltage value of a frequency band channel;
if the matching is passed, acquiring a frequency band channel corresponding to a preset voltage value matched with the feedback voltage value as a current frequency band channel;
and if the matching is not passed, feeding back the detected feedback voltage value as abnormal voltage.
5. The method of claim 2, wherein the generating of the control command by the switch control unit based on the currently affiliated frequency band path comprises:
and the switch control unit changes the control logic according to the current frequency band channel of the feedback voltage value and generates a control instruction.
6. The method according to claim 3, wherein the band path comprises any one or a combination of a plurality of band paths of a Beidou BDSB1 single-mode band path, a GPSL1 single-mode band path and a BDS/GPS dual-mode band path;
if a plurality of frequency band paths exist in the frequency band path, the frequency band allowed by any one of the frequency band paths is different.
7. The method of claim 6, wherein the band path is provided with a radio frequency surface acoustic wave filter, a radio frequency low noise amplifier, and a radio frequency surface acoustic wave filter in this order from a radio frequency band input end to a radio frequency band output end; the frequency band channel is used for sequentially carrying out-of-band filtering, signal amplification and out-of-band filtering processing on an input radio frequency band.
8. The method of claim 2, wherein the controlling the rf switch to be configured to the frequency band path corresponding to the feedback voltage value based on the rf switch signal comprises:
and responding to a control instruction by the radio frequency switch, and configuring the radio frequency switch to a current frequency band channel of the feedback voltage value.
9. The method of claim 8, wherein the configuring, by the rf switch in response to a control command, the rf switch to the current band path of the feedback voltage value comprises:
after the radio frequency switch receives the control instruction, analyzing and responding to the control instruction;
and configuring the radio frequency switch to the current frequency band path of the feedback voltage value to enable the current frequency band path to be conducted.
10. A system band switching apparatus, comprising:
a voltage detection unit: the system is used for detecting the feedback voltage acted on the radio frequency head by the system and acquiring the feedback voltage value on the radio frequency head;
a switch control unit: for generating a radio frequency switching signal based on the feedback voltage value;
radio frequency switch configuration unit: and the frequency band circuit is used for controlling the radio frequency switch to be configured on a frequency band circuit corresponding to the feedback voltage value based on the radio frequency switch signal, and the frequency band circuit is a signal connection circuit between the antenna and the radio frequency head.
11. A computer-readable storage medium, having stored thereon an executable program, wherein the program, when executed by a processor, implements the method for system band switching according to any of claims 1 to 9.
12. A radio frequency receiving end, comprising:
an antenna;
a switch controller;
one or more radio frequency switches;
one or more frequency band channels;
a voltage detection unit;
a radio frequency head; wherein the radio frequency receiving end is configured to: the method for switching the system frequency band by detecting the feedback voltage according to any one of claims 1 to 9 is performed.
13. A communication terminal, characterized in that the communication terminal comprises:
one or more processors;
a memory;
one or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the one or more processors, the one or more applications configured to: the method for switching the system frequency band by detecting the feedback voltage according to any one of claims 1 to 9 is performed.
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| CN201811476770.8A CN109714067B (en) | 2018-12-04 | 2018-12-04 | System frequency band switching method and device, storage medium, receiving end and terminal |
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| CN201811476770.8A CN109714067B (en) | 2018-12-04 | 2018-12-04 | System frequency band switching method and device, storage medium, receiving end and terminal |
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| CN114866129A (en) * | 2022-04-21 | 2022-08-05 | 成都贝尔普森电子技术有限公司 | Method for realizing multi-band switching of satellite communication equipment |
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| JP2000341148A (en) * | 1999-05-28 | 2000-12-08 | Hitachi Denshi Ltd | Radio equipment |
| US6758551B2 (en) * | 2002-11-26 | 2004-07-06 | Xerox Corporation | Distributed high efficiency RF supply |
| CN103384962B (en) * | 2012-03-05 | 2015-06-10 | 华为终端有限公司 | Antenna switch circuit and wireless terminal device |
| CN105610420A (en) * | 2015-12-21 | 2016-05-25 | 深圳市科陆电子科技股份有限公司 | Multichannel ultrahigh-frequency RFID antenna switch switcher |
| CN107395221A (en) * | 2017-08-09 | 2017-11-24 | 惠州Tcl移动通信有限公司 | A kind of LTE frequency ranges switching device, switching method and mobile terminal |
| CN207166788U (en) * | 2017-08-31 | 2018-03-30 | 深圳磊诺科技有限公司 | The scanning system and LTE full frequency band radio-frequency cards of a kind of LTE full frequency bands |
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