CN112769453B - Signal receiving and transmitting control method of Beidou active antenna - Google Patents
Signal receiving and transmitting control method of Beidou active antenna Download PDFInfo
- Publication number
- CN112769453B CN112769453B CN202011566512.6A CN202011566512A CN112769453B CN 112769453 B CN112769453 B CN 112769453B CN 202011566512 A CN202011566512 A CN 202011566512A CN 112769453 B CN112769453 B CN 112769453B
- Authority
- CN
- China
- Prior art keywords
- signal
- radio frequency
- gain
- frequency signal
- field intensity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000012545 processing Methods 0.000 claims abstract description 59
- 230000003321 amplification Effects 0.000 claims abstract description 57
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 57
- 238000004891 communication Methods 0.000 claims abstract description 46
- 238000001914 filtration Methods 0.000 claims abstract description 41
- 230000000875 corresponding effect Effects 0.000 claims description 64
- 230000006698 induction Effects 0.000 claims description 21
- 238000007781 pre-processing Methods 0.000 claims description 8
- 230000002596 correlated effect Effects 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 2
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 9
- 238000001514 detection method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18513—Transmission in a satellite or space-based system
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
The application is applicable to the technical field of Beidou satellite communication, and provides a signal receiving and transmitting control method of a Beidou active antenna, wherein the Beidou active antenna receives a direct current electric signal with constant voltage provided by a Beidou satellite communication terminal through a radio frequency coaxial cable, and the signal receiving and transmitting control method comprises the following steps: acquiring a first field intensity signal corresponding to the power of the first radio frequency signal after filtering processing, and generating a switch control signal based on the field intensity signal; performing power amplification processing on the filtered first radio frequency signal based on the first gain; if the switch control signal is an opening signal, performing power amplification processing on the first radio frequency signal after the power amplification processing again; converting the first radio frequency signal subjected to power amplification treatment again into a field signal, and transmitting the field signal; and acquiring a second field intensity signal corresponding to the power of the first radio frequency signal subjected to power amplification again, and reversely adjusting the first gain based on the second field intensity signal, so that the problem that the antenna power amplifier is easy to damage is solved.
Description
Technical Field
The application belongs to the technical field of Beidou satellite communication, and particularly relates to a signal receiving and transmitting control method of a Beidou active antenna.
Background
The Beidou satellite navigation system is a satellite navigation system with independent intellectual property rights in China, and along with the rapid development of the Beidou satellite navigation system, various Beidou satellite communication terminals based on the Beidou satellite navigation system are developed, and are widely applied to the fields of electric power, agriculture, water conservancy, sea and land transportation and the like.
The big dipper satellite communication terminal communicates with big dipper satellite through big dipper antenna generally, and in some specific application environment, the big dipper antenna can't integrate in the big dipper satellite communication terminal, need handle the antenna, and traditional one kind of solution is to be connected big dipper satellite communication terminal and big dipper antenna through radio frequency cable, accessible this radio frequency cable transmission radio frequency signal and power signal between big dipper satellite communication terminal and the big dipper antenna like this. The existing Beidou antenna designed based on the scheme needs to be powered by adopting a low-voltage direct current power supply mode when in a signal receiving state, and needs to be powered by adopting a high-voltage direct current power supply mode when in a signal transmitting state, so that the Beidou antenna is in a high-low voltage switching state for a long time, the damage of an antenna power amplifier is easy to cause, the reliability of the Beidou antenna is reduced, and the service life of the Beidou antenna is shortened; and the power of the radio frequency signal output by the Beidou antenna is unstable, so that the communication quality is poor or the power consumption of the Beidou antenna is high.
Disclosure of Invention
In view of the above, the embodiment of the application provides a signal transceiving control method of a Beidou active antenna, so as to solve the problems that the existing Beidou antenna design scheme is easy to cause damage of an antenna power amplifier, reduce reliability of the Beidou antenna, shorten service life of the Beidou antenna, and unstable power of radio frequency signals output by the existing Beidou antenna, thereby causing poor communication quality or higher power consumption of the Beidou antenna.
The embodiment of the application provides a signal receiving and transmitting control method of a Beidou active antenna, wherein the Beidou active antenna is connected with a Beidou satellite communication terminal through a radio frequency coaxial cable, and the Beidou satellite communication terminal provides direct current electric signals with constant voltage for the Beidou active antenna; the signal receiving and transmitting control method comprises the following steps:
filtering a first radio frequency signal to be transmitted;
acquiring a first field intensity signal corresponding to the power of the first radio frequency signal after the filtering processing, and generating a switch control signal based on the field intensity signal;
performing power amplification processing on the first radio frequency signal subjected to the filtering processing based on a first gain; wherein the first gain is adjustable;
if the switch control signal is an opening signal, carrying out power amplification processing on the first radio frequency signal after the power amplification processing again;
converting the first radio frequency signal subjected to power amplification again into a field signal, and transmitting the field signal;
and acquiring a second field intensity signal corresponding to the power of the first radio frequency signal subjected to the power amplification again, and reversely adjusting the first gain based on the second field intensity signal.
Optionally, the obtaining a first field strength signal corresponding to the power of the first radio frequency signal after the filtering processing, and generating a switch control signal based on the field strength signal, includes:
performing field intensity induction on the first radio frequency signal subjected to the filtering treatment to obtain a first field intensity signal, and converting the first field intensity signal into a corresponding first induction level;
and generating a switch control signal according to the first level and a first preset level threshold.
Optionally, the generating a switch control signal according to the first level and the first preset level threshold includes:
and generating an opening signal when the first induction level is determined to be greater than or equal to the first preset level threshold.
Optionally, the generating a switch control signal according to the first level and the first preset level threshold includes:
and generating a turn-off signal when the first sensing level is determined to be smaller than the first preset level threshold.
Optionally, the performing power amplification processing on the first radio frequency signal after the filtering processing based on a first gain includes:
performing first-stage power amplification processing on the first radio frequency signal subjected to the filtering processing based on a second gain; wherein the second gain is adjustable;
performing second-stage power amplification processing on the first radio frequency signal subjected to the first-stage power amplification processing based on a third gain; wherein the product of the second gain and the third gain is the first gain.
Optionally, the obtaining a second field strength signal corresponding to the power of the first radio frequency signal after the power amplification process is performed again, and performing reverse adjustment on the first gain based on the second field strength signal includes:
performing field intensity induction on the first radio frequency signal subjected to the power amplification treatment again to obtain a second field intensity signal, and converting the second field intensity signal into a corresponding second induction level;
generating a reverse gain adjustment signal corresponding to the second sense level; wherein the reverse gain adjustment signal is used to reverse adjust the second gain.
Optionally, the generating the reverse gain adjustment signal corresponding to the second sensing level includes:
generating a first reverse gain adjustment signal when the second sense level is greater than a second preset level threshold; wherein the first inverse gain adjustment signal is used to adjust the second gain.
Optionally, the generating the reverse gain adjustment signal corresponding to the second sensing level includes:
generating a second reverse gain adjustment signal when the second induced level is less than a third preset level threshold; the second reverse gain adjusting signal is used for adjusting the second gain, and the third preset level threshold is smaller than the second preset level threshold.
Optionally, the signal transceiving control method further includes:
receiving a second radio frequency signal;
preprocessing the second radio frequency signal, and sending the preprocessed second radio frequency signal to the Beidou satellite communication terminal; wherein the preprocessing at least comprises filtering processing and power amplification processing.
Optionally, the frequency of the first radio frequency signal is within a preset L frequency band.
Optionally, the first gain is adjustable.
The signal receiving and transmitting control method for the Beidou active antenna provided by the embodiment of the application has the following beneficial effects:
according to the signal receiving and transmitting control method for the Beidou active antenna, the Beidou active antenna is connected with the Beidou satellite communication terminal through the radio frequency coaxial cable, and the automatic switching control of the power amplifying unit can be realized based on the power of the first radio frequency signal, so that the automatic switching control of the signal receiving and transmitting state of the Beidou active antenna is realized, the Beidou satellite communication terminal can provide a direct current electric signal with constant voltage for the Beidou active antenna, the Beidou active antenna always works in a constant voltage state, the problem that the antenna power amplifier is easy to damage is effectively solved, the reliability of the Beidou active antenna is improved, and the service life of the Beidou active antenna is prolonged; meanwhile, the field intensity signal corresponding to the power of the first radio frequency signal after the power amplification processing is obtained, and the first gain is reversely adjusted based on the field intensity signal, so that the self-adaptive adjustment of the power amplification factor of the first radio frequency signal can be realized, the power of the first radio frequency signal finally transmitted by the Beidou active antenna can be stabilized in a fixed range, the problems of poor communication quality caused by smaller power of the transmitted signal and higher antenna power consumption caused by larger power of the transmitted signal are avoided, the communication quality can be improved, and the power consumption of the Beidou active antenna is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a connection relationship between a beidou active antenna and a beidou satellite communication terminal provided by an embodiment of the present application;
fig. 2 is a schematic structural diagram of a beidou active antenna provided by an embodiment of the present application;
fig. 3 is a schematic structural diagram of another Beidou active antenna according to another embodiment of the present application;
fig. 4 is a schematic structural diagram of a beidou active antenna according to still another embodiment of the present application;
fig. 5 is a schematic flowchart of a signal transceiving control method of a beidou active antenna provided by an embodiment of the present application;
fig. 6 is a flowchart of implementation of S52 in a signal transceiving control method of a beidou active antenna provided by an embodiment of the present application;
fig. 7 is a flowchart of implementation of S53 in a signal transceiving control method of a beidou active antenna provided by an embodiment of the present application;
fig. 8 is a flowchart of implementation of S56 in a signal transceiving control method of a beidou active antenna provided by an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It should be understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations. Furthermore, the terms "first," "second," "third," and the like in the description of the present specification and in the appended claims, are used for distinguishing between descriptions and not necessarily for indicating or implying a relative importance.
It should also be appreciated that references to "one embodiment" or "some embodiments" or the like described in this specification mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.
Referring to fig. 1, fig. 1 is a schematic diagram illustrating a connection relationship between a signal transceiving control method of a beidou active antenna and a beidou satellite communication terminal according to an embodiment of the present application. As shown in fig. 1, the beidou active antenna 10 provided by the embodiment of the present application may be connected to a beidou satellite communication terminal 30 through a radio frequency coaxial cable 20. By way of example and not limitation, the Beidou satellite communication terminal 30 may be an electric power metering device for collecting electric parameter values recorded by electric meters.
Specifically, the beidou active antenna 10 is provided with a unique communication interface, namely a radio frequency interface 11. The type of the rf interface 11 may be set according to actual needs, and is not limited herein, for example, the type of the rf interface 11 may be a Nut (Nut, N) interface, a micro precision a version (SubMiniature version A, SMA) interface, or an rf interface (TNC interface) of a TNC electrician company.
The Beidou active antenna 10 is connected with one end of a radio frequency coaxial cable 20 through a radio frequency interface 11 of the Beidou active antenna, and the other end of the radio frequency coaxial cable 20 is connected with a Beidou satellite communication terminal 30. The radio frequency signal and the direct current signal can be transmitted between the Beidou active antenna 10 and the Beidou satellite communication terminal 30 through the radio frequency coaxial cable 20, namely, the transmission of two different signals can be realized by connecting one radio frequency coaxial cable 20 between the Beidou active antenna 10 and the Beidou satellite communication terminal 30, so that the cost can be reduced, and the installation is more convenient.
In the embodiment of the application, the Beidou satellite communication terminal 30 provides the direct current electric signal with constant voltage for the Beidou active antenna 10, namely, no matter the Beidou active antenna 10 is in a signal receiving state or a signal transmitting state, the voltage of the direct current electric signal provided by the Beidou satellite communication terminal 30 for the Beidou active antenna 10 is unchanged all the time, so that the problem of easy damage of an antenna power amplifier can be effectively solved, the reliability of the Beidou active antenna is improved, and the service life of the Beidou active antenna is prolonged.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a signal transceiving control method of a beidou active antenna according to an embodiment of the present application. As shown in fig. 2, the beidou active antenna 10 may include a transmitting module 12 and a receiving module 13.
The transmitting module 12 specifically includes:
the filtering unit 121 is configured to perform filtering processing on a first radio frequency signal to be transmitted.
The switch control unit 122 is connected to the filtering unit 121 and the power amplifying unit 123, and is configured to obtain a first field strength signal corresponding to the power of the first radio frequency signal after the filtering process, and perform switch control on the power amplifying unit 123 based on the first field strength signal.
A variable gain amplifying unit 125 connected to the filtering unit 121, for performing power amplification processing on the filtered first rf signal based on the first gain; wherein the first gain is adjustable.
The power amplifying unit 123 is connected to the variable gain amplifying unit 125, and is configured to perform power amplification processing on the first rf signal after power amplification processing again after the power amplifying unit is turned on.
The passive transmitting antenna 124 is connected to the power amplifying unit 123, and is configured to convert the first rf signal after the power amplifying process again into a field signal, and transmit the field signal.
The gain control unit 126 is connected to the power amplifying unit 123 and the variable gain amplifying unit 125, and is configured to obtain a second field strength signal corresponding to the power of the first radio frequency signal after the power amplifying process is performed again, and reversely adjust the first gain based on the second field strength signal.
In the embodiment of the present application, since the signal transmitting frequency of the beidou active antenna 10 needs to be in the L frequency band, after receiving the first radio frequency signal from the beidou satellite communication terminal 30, the filtering unit 121 filters clutter in the first radio frequency signal, where the frequency of the clutter is not in the L frequency band, that is, in the embodiment of the present application, the frequency of the first radio frequency signal is in the L frequency band. In a specific application, the center frequency of the L band may be 1615.68 megahertz (MHz), and the L band may be 1615.68mhz±4.08MHz.
In the embodiment of the present application, the field intensity value of the first field intensity signal corresponding to the power of the first radio frequency signal obtained by the switch control unit 122 is positively correlated with the power of the first radio frequency signal after the filtering process, that is, when the power of the first radio frequency signal after the filtering process is greater, the field intensity value of the first field intensity signal corresponding to the power of the first radio frequency signal obtained by the switch control unit 122 is greater; when the power of the first radio frequency signal after the filtering process is smaller, the field strength value of the first field strength signal corresponding to the power of the first radio frequency signal acquired by the switch control unit 122 is smaller.
In a specific application, when the beidou satellite communication terminal 30 transmits a radio frequency signal through the beidou active antenna 10, the power of the first radio frequency signal output by the filtering unit 121 is generally larger, and at this time, the field intensity value of the first field intensity signal corresponding to the power of the first radio frequency signal acquired by the switch control unit 122 is also larger; when the beidou active antenna 10 does not emit the radio frequency signal, the power of the first radio frequency signal output by the filtering unit 121 is generally smaller, and at this time, the field intensity value of the first field intensity signal corresponding to the power of the first radio frequency signal acquired by the switch control unit 122 is also smaller.
Therefore, in one embodiment of the present application, when the switch control unit 122 detects that the field intensity value of the first field intensity signal corresponding to the power of the first radio frequency signal is greater than the preset field intensity threshold, it indicates that the beidou active antenna needs to transmit the radio frequency signal outwards at this time, so the switch control unit 122 may control the power amplification unit 123 to be turned on, so that the power amplification unit 123 performs power amplification processing on the filtered first radio frequency signal, and further, the power of the first radio frequency signal output by the power amplification unit 123 reaches the transmission requirement.
In another embodiment of the present application, when the switch control unit 122 detects that the field intensity value of the first field intensity signal corresponding to the power of the first radio frequency signal is greater than the preset field intensity value threshold, it indicates that the beidou active antenna does not need to transmit the radio frequency signal outwards at this time, so the switch control unit 122 may control the power amplifying unit 123 to be turned off, so as to reduce the power consumption of the beidou active antenna.
The embodiment of the application can realize automatic switching control of the power amplifying unit 123 based on the power of the first radio frequency signal received by the transmitting module 12, thereby realizing automatic switching control of the signal receiving and transmitting state of the Beidou active antenna and reducing the power consumption of the Beidou active antenna.
In the embodiment of the present application, the field intensity value of the second field intensity signal corresponding to the power of the first radio frequency signal obtained by the gain control unit 126 is positively correlated with the power of the first radio frequency signal output by the power amplification unit 123, that is, the greater the power of the first radio frequency signal output by the power amplification unit 123 is, the greater the field intensity value of the second field intensity signal corresponding to the power of the first radio frequency signal obtained by the gain control unit 126 is; the smaller the power of the first radio frequency signal output by the power amplifying unit 123, the smaller the field intensity value of the second field intensity signal corresponding to the power of the first radio frequency signal acquired by the gain control unit 126.
The reverse adjustment of the first gain by the gain control unit 126 based on the second field strength signal corresponding to the acquired power of the first radio frequency signal may specifically include: when the field intensity value of the second field intensity signal corresponding to the power of the first radio frequency signal is larger than the first preset field intensity value threshold, the first gain is adjusted down, so that the power of the first radio frequency signal output by the power amplifying unit 123 is reduced; when the field intensity value of the second field intensity signal corresponding to the power of the first radio frequency signal is smaller than the second preset field intensity value threshold, the first gain is adjusted to increase the power of the first radio frequency signal output by the power amplifying unit 123, so that the power of the first radio frequency signal output by the power amplifying unit 123 can be always stabilized between the power corresponding to the second preset field intensity value threshold and the power corresponding to the first preset field intensity value threshold. The second preset field strength value threshold is smaller than the first preset field strength value threshold.
As can be seen from the above, in the signal transceiving control method for the beidou active antenna provided by the embodiment of the application, the radio frequency coaxial cable is connected with the beidou satellite communication terminal, and the switch control unit in the transmitting module can realize automatic switch control on the power amplifying unit based on the power of the first radio frequency signal, so that the automatic switching control on the signal transceiving state of the beidou active antenna is realized, therefore, the beidou satellite communication terminal can provide a direct current electric signal with constant voltage for the beidou active antenna, so that the beidou active antenna always works in a constant voltage state, the problem of easy damage of the antenna power amplifier can be effectively solved, the reliability of the beidou active antenna is improved, and the service life of the beidou active antenna is prolonged; meanwhile, by arranging the variable gain amplifying unit and the gain control unit in the transmitting module of the Beidou active antenna, the gain control unit is used for acquiring a field intensity signal corresponding to the power of the first radio frequency signal output by the power amplifying unit and carrying out reverse adjustment on the first gain based on the field intensity signal, so that the self-adaptive adjustment of the power amplification factor of the first radio frequency signal can be realized, the power of the first radio frequency signal output by the power amplifying unit can be stabilized in a fixed range, the problems of poor communication quality caused by smaller power of the transmitting signal and higher antenna power consumption caused by larger power of the transmitting signal are avoided, the communication quality can be improved, and the power consumption of the Beidou active antenna is reduced.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a signal transceiving control method of a beidou active antenna according to another embodiment of the present application. As shown in fig. 3, in this embodiment, the switch control unit 122 may specifically include:
the first field intensity induction subunit 1221 is connected to the filtering unit 121, and is configured to perform field intensity induction on the first radio frequency signal after the filtering process to obtain a first field intensity signal, and convert the first field intensity signal into a corresponding first induction level.
The power amplifier switch control subunit 1222 is connected to the first field strength sensing subunit 1221 and the power amplifier unit 123, and is configured to generate a switch control signal according to the first level and the first preset level threshold; wherein the switch control signal is used to control the power amplifying unit 123 to be turned on or off.
In a specific application, the first field strength sensing subunit 1221 may be a field strength detection circuit, where the field strength detection circuit may convert the sensed first field strength signal into a corresponding first sensing level according to a conversion relationship between a field strength value of the field strength signal and the sensing level. The larger the field intensity value of the first field intensity signal is, the higher the corresponding first induction level is. In a specific application, the field intensity detection circuit can be composed of a detection circuit and a filter circuit.
In this embodiment, after receiving the first sensing level output by the first field strength sensing subunit 1221, the power amplifier switch control subunit 1222 compares the first sensing level with a first preset level threshold.
The first preset level threshold may be determined according to an induction level corresponding to the radio frequency signal output by the filtering unit 121 when the beidou active antenna 10 transmits the radio frequency signal.
In one implementation of this embodiment, the power amplifier switch control subunit 1222 may generate the on signal when determining that the first sensing level is greater than or equal to the first preset level threshold; wherein the on signal is used to control the power amplifying unit 123 to be turned on. In another implementation manner of the present embodiment, the power amplifier switch control subunit 1222 may generate the turn-off signal when determining that the first sensing level is less than the first preset level threshold; wherein the off signal is used to control the power amplifying unit 123 to be turned off.
With continued reference to fig. 3, in another embodiment of the present application, the variable gain amplifying unit 125 may specifically include:
a first stage pre-amplifying subunit 1251 connected to the filtering unit 121, and configured to perform a first stage power amplification on the filtered first radio frequency signal based on the second gain; wherein the second gain is adjustable.
A second stage pre-amplifying subunit 1252, configured to perform a second stage power amplification on the first rf signal after the first stage power amplification based on the third gain; wherein the third gain is not adjustable, and the product of the second gain and the third gain is the first gain.
Further, the gain control unit 126 may specifically include:
the second field intensity sensing subunit 1261 is connected to the power amplifying unit 123, and is configured to perform field intensity sensing on the first radio frequency signal output by the power amplifying unit 123 to obtain a second field intensity signal, and convert the second field intensity signal into a corresponding second sensing level.
A gain adjustment subunit 1262 connected to the second field strength sensing subunit 1261 and the first stage pre-amplifier subunit 1251 for generating an inverse gain adjustment signal corresponding to the second sensing level; wherein the reverse gain adjustment signal is used for performing reverse adjustment on the second gain.
In a specific application, the second field strength sensing subunit 1261 may be a field strength detection circuit, and the field strength detection circuit may convert the sensed second field strength signal into a corresponding second sensing level according to a conversion relationship between a field strength value of the field strength signal and the sensing level. The larger the field intensity value of the second field intensity signal is, the higher the corresponding second induction level is. In a specific application, the field intensity detection circuit can be composed of a detection circuit and a filter circuit.
In this embodiment, after the gain adjustment subunit 1262 receives the second sensing level output by the second field strength sensing subunit 1261, the second sensing level may be compared with a second preset level threshold and a third preset level threshold, and a corresponding reverberant gain adjustment signal may be generated based on the comparison result.
The second preset level threshold may be determined according to a preset maximum power of the transmission signal, and the third preset level threshold may be determined according to a preset low power of the transmission signal.
In one implementation of this embodiment, the gain adjustment subunit 1262 generates a first inverse gain adjustment signal upon determining that the second sense level is greater than a second preset level threshold; wherein the first inverse gain adjustment signal is used to adjust the second gain. In another implementation of the present embodiment, the gain adjustment subunit 1262 generates a second inverse gain adjustment signal when it is determined that the second sense level is less than the third preset level threshold; wherein the second inverse gain adjustment signal is used to adjust the second gain.
With continued reference to fig. 3, in yet another embodiment of the present application, the receiving module 13 may include:
a passive receiving antenna 132 for receiving the second radio frequency signal.
The receiving path 131 is connected with the passive receiving antenna and is used for preprocessing the second radio frequency signal and sending the preprocessed second radio frequency signal to the Beidou satellite communication terminal; the preprocessing at least comprises filtering processing and power amplification processing.
In this embodiment, the passive receiving antenna 132 can specifically convert the field signal based on the electromagnetic field transmission mode into the radio frequency signal based on the path transmission mode, so as to further realize the receiving of the second radio frequency signal.
In this embodiment, since the signal receiving frequency of the beidou active antenna 10 needs to be in the S frequency band, the frequency of the second radio frequency signal needs to be in the S frequency band. In a specific application, the center frequency of the S frequency band may be 2491.75MHz, and the S frequency band may be 2491.75 MHz.+ -. 4.08MHz.
In a specific application, the receiving channel 131 may perform filtering processing on clutter signals in the second radio frequency signal, where the frequency of the clutter signals is not in the S frequency band, and perform power amplification processing on the filtered second radio frequency signal, so that the power of the second radio frequency signal reaches the signal receiving requirement of the beidou active antenna.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a signal transceiving control method of a beidou active antenna according to still another embodiment of the present application. As shown in fig. 4, in this embodiment, the beidou active antenna 10 further includes:
the feed module 14 is connected with the Beidou satellite communication terminal 30 and is used for separating a radio frequency signal and a direct current signal transmitted between the Beidou active antenna 10 and the Beidou satellite communication terminal 30.
The combining module 15 is connected with the feeding module 14, the transmitting module 12 and the receiving module 13, and is used for combining radio frequency signals of different frequency bands transmitted by the Beidou active antenna 10.
The power supply processing module 16 is connected with the feeding module 14, the transmitting module 12 and the receiving module 13, and is used for outputting direct current signals with constant voltage to the transmitting module 12 and the receiving module 13.
In this embodiment, the feeding module 14 separates the rf signal and the dc signal transmitted between the beidou active antenna 10 and the beidou satellite communication terminal 30, so that the rf signal and the dc signal are isolated from each other and are not affected by each other.
The combining module 15 is specifically configured to combine the rf signal in the L frequency band with the rf signal in the S frequency band, so that the two signals are transmitted on the same rf link.
The power processing module 16 can process the dc signal with constant voltage provided by the beidou satellite communication terminal 30, and provide a constant working voltage for the transmitting module 12 and the receiving module 13.
It should be noted that, the power supply processing module 16 supplies power to other modules in the beidou active antenna 10 in addition to the transmitting module 12 and the receiving module 13.
Based on the Beidou active antenna provided by the embodiment, the embodiment of the application also provides a signal receiving and transmitting control method based on the Beidou active antenna. Referring to fig. 5, fig. 5 is a schematic flowchart of a signal transceiving control method of a beidou active antenna according to an embodiment of the present application. As shown in fig. 5, the signal transmission/reception control method may include S51 to S56, which are described in detail as follows:
s51: and filtering the first radio frequency signal to be transmitted.
S52: and acquiring a first field intensity signal corresponding to the power of the first radio frequency signal after the filtering processing, and generating a switch control signal based on the field intensity signal.
S53: performing power amplification processing on the first radio frequency signal subjected to the filtering processing based on a first gain; wherein the first gain is adjustable.
S54: and if the switch control signal is an opening signal, performing power amplification processing on the first radio frequency signal after the power amplification processing again.
S55: and converting the first radio frequency signal subjected to the power amplification treatment again into a field signal, and transmitting the field signal.
S561: and acquiring a second field intensity signal corresponding to the power of the first radio frequency signal subjected to the power amplification again, and reversely adjusting the first gain based on the second field intensity signal.
It should be noted that, in this embodiment, S51, S52, S53, S54, S55, and S56 may be implemented by the filtering unit 121, the switch control unit 122, the variable gain amplifying unit 125, the power amplifying unit 123, the passive transmitting antenna 124, and the gain control unit 126 in the embodiment corresponding to fig. 2, respectively, so that specific implementation processes of S51 to S56 may refer to the related descriptions of the embodiment corresponding to fig. 2 and are not repeated herein.
In one possible implementation manner of this embodiment, S52 may specifically include S61 to S62 shown in fig. 6, which are described in detail below:
s61: and performing field intensity induction on the first radio frequency signal subjected to the filtering treatment to obtain a first field intensity signal, and converting the first field intensity signal into a corresponding first induction level.
S62: and generating a switch control signal according to the first level and a first preset level threshold.
In one possible implementation manner of this embodiment, S62 may specifically include the following steps:
and generating an opening signal when the first induction level is determined to be greater than or equal to the first preset level threshold.
In another possible implementation manner of this embodiment, S62 may specifically include the following steps:
and generating a turn-off signal when the first sensing level is determined to be smaller than the first preset level threshold.
It should be noted that, S61 and S62 in this embodiment may be implemented by the first field strength sensing subunit 1221 and the power amplifier switch control subunit 1222 in the embodiment corresponding to fig. 3, respectively, and therefore, specific implementation procedures of S61 and S62 may refer to the relevant descriptions of the embodiment corresponding to fig. 3 and are not repeated herein.
In one possible implementation manner of this embodiment, S53 may specifically include S71 to S72 shown in fig. 7, which are described in detail below:
s71: performing first-stage power amplification processing on the first radio frequency signal subjected to the filtering processing based on a second gain; wherein the second gain is adjustable.
S72: performing second-stage power amplification processing on the first radio frequency signal subjected to the first-stage power amplification processing based on a third gain; wherein the product of the second gain and the third gain is the first gain.
It should be noted that, S71 and S72 in this embodiment may be implemented by the first stage preamplifier subunit 1251 and the second stage preamplifier subunit 1252 in the embodiment corresponding to fig. 3, respectively, and therefore, specific implementation procedures of S71 and S72 may refer to the relevant descriptions of the embodiment corresponding to fig. 3, which are not repeated herein.
In one possible implementation manner of this embodiment, S56 may specifically include S81 to S82 shown in fig. 8, which are described in detail below:
s81: and performing field intensity induction on the first radio frequency signal subjected to the power amplification treatment again to obtain a second field intensity signal, and converting the second field intensity signal into a corresponding second induction level.
S82: generating a reverse gain adjustment signal corresponding to the second sense level; wherein the reverse gain adjustment signal is used to reverse adjust the second gain.
In one possible implementation manner of this embodiment, S82 may specifically include the following steps:
generating a first reverse gain adjustment signal when the second sense level is greater than a second preset level threshold; wherein the first inverse gain adjustment signal is used to adjust the second gain.
In another possible implementation manner of this embodiment, S82 may specifically include the following steps:
generating a second reverse gain adjustment signal when the second induced level is less than a third preset level threshold; the second reverse gain adjusting signal is used for adjusting the second gain, and the third preset level threshold is smaller than the second preset level threshold.
It should be noted that, S81 and S82 in this embodiment may be implemented by the second field strength sensing subunit 1261 and the gain adjusting subunit 1262 in the embodiment corresponding to fig. 3, and therefore, the specific implementation process of S81 and S82 may refer to the related description of the embodiment corresponding to fig. 3, which is not repeated herein.
In another possible implementation manner of this embodiment, the signal transceiving control method of the beidou active antenna may further include the following steps:
receiving a second radio frequency signal;
preprocessing the second radio frequency signal, and sending the preprocessed second radio frequency signal to the Beidou satellite communication terminal; wherein the preprocessing at least comprises filtering processing and power amplification processing.
The frequency of the second radio frequency signal is in a preset S frequency band, and the center frequency of the S frequency band is 2491.75 MHz.
It should be noted that, each step in the embodiment may be implemented by the passive receiving antenna 132 and the receiving path 131 in the embodiment corresponding to fig. 3, so the specific implementation process of each step in the embodiment may refer to the related description of the embodiment corresponding to fig. 3, which is not repeated herein.
As can be seen from the above, according to the signal transceiving control method for the beidou active antenna provided by the embodiment of the application, the beidou active antenna is connected with the beidou satellite communication terminal through the radio frequency coaxial cable, and the automatic switching control of the power amplifying unit can be realized based on the power of the first radio frequency signal, so that the automatic switching control of the signal transceiving state of the beidou active antenna is realized, and therefore, the beidou satellite communication terminal can provide a direct current electric signal with constant voltage for the beidou active antenna, so that the beidou active antenna always works in a constant voltage state, the problem of easy damage of the antenna power amplifier can be effectively solved, the reliability of the beidou active antenna is improved, and the service life of the beidou active antenna is prolonged; meanwhile, the field intensity signal corresponding to the power of the first radio frequency signal after the power amplification processing is obtained, and the first gain is reversely adjusted based on the field intensity signal, so that the self-adaptive adjustment of the power amplification factor of the first radio frequency signal can be realized, the power of the first radio frequency signal finally transmitted by the Beidou active antenna can be stabilized in a fixed range, the problems of poor communication quality caused by smaller power of the transmitted signal and higher antenna power consumption caused by larger power of the transmitted signal are avoided, the communication quality can be improved, and the power consumption of the Beidou active antenna is reduced.
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of each functional unit and module is illustrated, and in practical application, the above-mentioned functional allocation may be performed by different functional units and modules, that is, the internal structure of the node device is divided into different functional units or modules, so as to perform all or part of the above-mentioned functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, the specific names of the functional units and modules are only for distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference may be made to related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (6)
1. The signal receiving and transmitting control method of the Beidou active antenna is characterized in that the Beidou active antenna is connected with a Beidou satellite communication terminal through a radio frequency coaxial cable, and the Beidou satellite communication terminal provides direct current electric signals with constant voltage for the Beidou active antenna; the signal receiving and transmitting control method comprises the following steps:
filtering a first radio frequency signal to be transmitted;
acquiring a first field intensity signal corresponding to the power of the first radio frequency signal after the filtering processing, and generating a switch control signal based on the field intensity signal;
performing power amplification processing on the first radio frequency signal after the filtering processing based on a first gain, wherein a field intensity value of a first field intensity signal corresponding to the power of the first radio frequency signal is positively correlated with the power of the first radio frequency signal after the filtering processing;
if the switch control signal is an opening signal, carrying out power amplification processing on the first radio frequency signal after the power amplification processing again;
converting the first radio frequency signal subjected to power amplification again into a field signal, and transmitting the field signal;
acquiring a second field intensity signal corresponding to the power of the first radio frequency signal subjected to the power amplification treatment again, and reversely adjusting the first gain based on the second field intensity signal;
the power amplifying processing of the filtered first radio frequency signal based on a first gain includes:
performing first-stage power amplification processing on the first radio frequency signal subjected to the filtering processing based on a second gain; wherein the second gain is adjustable;
performing second-stage power amplification processing on the first radio frequency signal subjected to the first-stage power amplification processing based on a third gain; wherein the product of the second gain and the third gain is the first gain;
the obtaining the second field intensity signal corresponding to the power of the first radio frequency signal after the power amplification processing again, and performing reverse adjustment on the first gain based on the second field intensity signal, includes:
performing field intensity induction on the first radio frequency signal subjected to the power amplification treatment again to obtain a second field intensity signal, and converting the second field intensity signal into a corresponding second induction level;
generating a reverse gain adjustment signal corresponding to the second sense level; wherein the reverse gain adjustment signal is used for performing reverse adjustment on the second gain;
the generating the reverse gain adjustment signal corresponding to the second sense level includes:
generating a first reverse gain adjustment signal when the second sense level is greater than a second preset level threshold; wherein the first reverse gain adjustment signal is used to adjust the second gain;
the generating the reverse gain adjustment signal corresponding to the second sense level includes:
generating a second reverse gain adjustment signal when the second induced level is less than a third preset level threshold; the second reverse gain adjusting signal is used for adjusting the second gain, and the third preset level threshold is smaller than a second preset level threshold;
the method further comprises the steps of:
receiving a second radio frequency signal;
preprocessing the second radio frequency signal, and sending the preprocessed second radio frequency signal to the Beidou satellite communication terminal; wherein the preprocessing at least comprises filtering processing and power amplification processing;
and the Beidou active antenna performs combining processing on the first radio frequency signal and the second radio frequency signal.
2. The signal transceiving control method according to claim 1, wherein said obtaining a first field strength signal corresponding to a power of said first radio frequency signal after said filtering process, and generating a switch control signal based on said field strength signal, comprises:
performing field intensity induction on the first radio frequency signal subjected to the filtering treatment to obtain a first field intensity signal, and converting the first field intensity signal into a corresponding first induction level;
and generating a switch control signal according to the first level and a first preset level threshold.
3. The method according to claim 2, wherein generating the switch control signal according to the first level of the first level and the first preset level threshold comprises:
and generating an opening signal when the first induction level is determined to be greater than or equal to the first preset level threshold.
4. The method according to claim 2, wherein generating the switch control signal according to the first level of the first level and the first preset level threshold comprises:
and generating a turn-off signal when the first sensing level is determined to be smaller than the first preset level threshold.
5. The method according to any one of claims 1 to 4, wherein the frequency of the first radio frequency signal is within a preset L frequency band.
6. The signal transmission/reception control method according to any one of claims 1 to 4, wherein the first gain is adjustable.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011241548 | 2020-11-09 | ||
| CN2020112415487 | 2020-11-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112769453A CN112769453A (en) | 2021-05-07 |
| CN112769453B true CN112769453B (en) | 2023-10-27 |
Family
ID=75694673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011566512.6A Active CN112769453B (en) | 2020-11-09 | 2020-12-25 | Signal receiving and transmitting control method of Beidou active antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112769453B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204536557U (en) * | 2014-11-14 | 2015-08-05 | 北京九天利建信息技术有限公司 | A kind of Big Dipper short message omnidirectional transmitting-receiving subscriber computer terminal |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2994274B2 (en) * | 1996-09-19 | 1999-12-27 | 静岡日本電気株式会社 | Portable mobile radio terminal |
| JP2001016638A (en) * | 1999-06-30 | 2001-01-19 | Nec Corp | Radio communication device and system and automatic gain control method for radio communication device |
| KR20040088832A (en) * | 2003-04-12 | 2004-10-20 | 엘지전자 주식회사 | Apparatus and method for reducing consumption current of communication terminal |
| CN210181786U (en) * | 2019-06-03 | 2020-03-24 | 贵州阳鸣奇源科技有限公司 | Switch control circuit of Beidou electric power metering communication antenna |
-
2020
- 2020-12-25 CN CN202011566512.6A patent/CN112769453B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204536557U (en) * | 2014-11-14 | 2015-08-05 | 北京九天利建信息技术有限公司 | A kind of Big Dipper short message omnidirectional transmitting-receiving subscriber computer terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112769453A (en) | 2021-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7995970B2 (en) | Wireless transceiver | |
| US10069576B2 (en) | Interference suppression system and method | |
| CN110995310B (en) | Radio frequency front-end circuit and control method thereof | |
| US20080207256A1 (en) | Concurrent impedance matching of a wireless transceiver | |
| CN112202409B (en) | Low noise amplifying module, receiver and signal processing method | |
| CN112769453B (en) | Signal receiving and transmitting control method of Beidou active antenna | |
| CN112653480A (en) | Emitting module of big dipper active antenna | |
| CN106330243B (en) | A kind of method and device of the receiving sensitivity switching of terminal | |
| CN210327549U (en) | Satellite-borne Ka frequency band direct detection radiometer receiver | |
| CN102315885B (en) | Signal strength sensing device, relevant method thereof and communication system | |
| CN214013172U (en) | Beidou active antenna | |
| CN213937876U (en) | Emitting module of big dipper active antenna | |
| US7505743B2 (en) | Dual band transmitter having filtering coupler | |
| CN217507649U (en) | Beidou active antenna | |
| CN207623509U (en) | Radar receiver under a kind of L-band fixed ampllitude | |
| CN212324104U (en) | Radio frequency optical module | |
| CN107394420B (en) | Active single frequency antenna system | |
| CN112636012A (en) | Beidou active antenna | |
| CN112468213A (en) | Signal receiving and transmitting control method of Beidou active antenna | |
| CN209880817U (en) | Antenna module | |
| CN217507650U (en) | Beidou active antenna | |
| CN213693676U (en) | Emitting module of big dipper active antenna | |
| CN210200962U (en) | Receiving antenna for enhancing Wi-Fi signals | |
| CN212064015U (en) | Radio frequency optical transmission system of integrated field amplifier front end | |
| CN112564762A (en) | Signal receiving and transmitting control method of Beidou active antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240219 Address after: 510000, Room 301 and 401, Building 2, No. 42 Dongzhong Road, Huangpu District, Guangzhou City, Guangdong Province (Guangzhou Economic and Technological Development Zone) Patentee after: GUANGZHOU LEADING ELECTRONIC TECHNOLOGY CO.,LTD. Country or region after: China Address before: 510000 rooms 301 and 401, building 2, No. 42, Dongzhong Road, East District, Guangzhou Economic and Technological Development Zone, Guangdong Province Patentee before: TECHTOTOP MICROELECTRONICS Co.,Ltd. Country or region before: China |
|
| TR01 | Transfer of patent right |