CN110034773A - A kind of day leads to ground satellite station adaptive active antenna and its method of adjustment - Google Patents
A kind of day leads to ground satellite station adaptive active antenna and its method of adjustment Download PDFInfo
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- CN110034773A CN110034773A CN201910241701.7A CN201910241701A CN110034773A CN 110034773 A CN110034773 A CN 110034773A CN 201910241701 A CN201910241701 A CN 201910241701A CN 110034773 A CN110034773 A CN 110034773A
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- 230000033228 biological regulation Effects 0.000 claims abstract description 6
- 238000012544 monitoring process Methods 0.000 claims abstract description 3
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/1607—Supply circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
- H04B2001/0416—Circuits with power amplifiers having gain or transmission power control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The present invention proposes that a kind of day leads to ground satellite station adaptive active antenna and its method of adjustment, active antenna of the invention include passive antenna ANT, first duplexer, low-noise amplifier, adaptation module and power amplifier；The passive antenna ANT is used to receive and emit wireless signal to aerial；The adaptation module includes wireless signal input terminal, signal control terminal and signal transmitting terminal, the wireless signal input terminal receives the signal from the low-noise amplifier, the size that the signal control terminal passes through monitoring wireless input signal, the pad value of adaptive adjustment signal, to control the enabled of the power amplifier.The technical solution of the active antenna and its self-adapting regulation method that provide through the invention not only saves the expense of passive antenna and a 10 meters or 50 meters cable, it simplifies using difficulty, and the present invention can be automatically by receiving and transmitting signal amplitude adjusted to most safety and optimal communication state.
Description
Technical field
The invention belongs to Radio Transmission Technology field, it is related to a kind of day and leads to ground satellite station adaptive active antenna and its tune
Adjusting method.
Background technique
Active antenna is such antenna, wherein the biggish aerial array formed by a large amount of antenna elements.It is some
Radio transceiver and these antenna element are connected directly, these radio transceivers act on just as the antenna with Similar size
The connected single transceiver of array.The purpose for being arranged so (arrangement) is to obtain desired radiation diagram (radiation
Pattern) (radio beam), equivalent isotropic radiated power (EIRP) and sensitivity.However, only in the wireless of transmitting
In the case that the power (amplitude) and phase of electric wave are known and controllable, this aerial array could provide satisfied function.
It is developed to 4G (fourth generation mobile communication technology) in mobile communication technology, and LTE (Long Term Evolution, it is long
Phase evolution) area of coverage of system both requires the quality of covering signal, while to take into account the requirement of the capacity of the area of coverage.Active antenna
As a kind of selection for solving signal covering, the signal covering of the area of coverage can be preferably adapted to by the figuration of directional diagram
It is required that while the quantity of system equipment can be reduced.But network construction be it is progressive, existing network construction need to consider it is subsequent
Network capacity upgrading needs, present widespread practice is that a set of equipment is further added by existing network, this not only adds at
This, and occupy the volume of equipment operation.
The passive antenna and active antenna of You Tiantong earth station currently on the market, operator can generally match to the general family in day
Two antennas, passive and active antenna and two sections of cables (10 meters and 50 meters) between communication terminal and antenna distance less than 10 meters
When with 10 meters of cables connect passive antenna, be connected to source antenna with 50 meters of cables when distance is greater than 10 meters, use it is more troublesome, no
Communication quality can be made to reach most preferably, also increase unreliability, and also increase bigger cost.
Summary of the invention
In order to solve the above technical problems, the invention proposes a kind of days to lead to ground satellite station adaptive active antenna and its tune
Adjusting method, effective solution communication distance and makes communication quality integrity problem.
The present invention provides a kind of days to lead to ground satellite station adaptive active antenna, and the active antenna includes passive antenna
ANT, first duplexer, low-noise amplifier, adaptation module and power amplifier；
The passive antenna ANT is used to receive and emit wireless signal to aerial；
The adaptation module includes wireless signal input terminal, signal control terminal and signal transmitting terminal, the wireless communication
Number input terminal receives the signal from the low-noise amplifier, and the signal control terminal is big by monitoring wireless input signal
Small, the pad value of adaptive adjustment signal, to control the enabled of the power amplifier, the wireless signal transmitting terminal will be through
The signal of signal control terminal output is launched；
The passive antenna ANT receives the output signal from the first duplexer and as transmitting signal.
Preferably, described from the use of module including the voltage-controlled attenuator ATT1 for being located at wireless signal input terminal, it is located at signal
The voltage-controlled attenuator ATT2 of control terminal, DC operational amplifier DCAMP, the end coupler COP1 of transmission channel, leading portion coupling
Device COP2, end wave detector DET1, front end wave detector DET2 and micro-control unit MCU；
The voltage-controlled attenuator ATT1 receives the signal issued from the low-noise amplifier, and the signal is passed through the
The signal control terminal is input to after two duplexers；
The micro-control unit MCU of the signal control terminal controls described voltage-controlled decline before the passive antenna receives signal
Subtract device ATT2 and decay to maximum value, passive antenna receive wireless signal after, wave detector DET2 in front end described in real-time detection and
The AGC value of the end wave detector DET1 adjusts the voltage-controlled attenuator ATT2 and voltage-controlled attenuator ATT1, after adjustment, institute
The output valve of wave detector DET2 in front end described in micro-control unit real-time detection is stated to control the enabled of the power amplifier.
Preferably, the active antenna further includes gain amplifier, and the gain amplifier includes being located at the low pass filtered
Gain amplifier AMP1, the voltage-controlled attenuator ATT1 and the second duplexer between wave and the voltage-controlled attenuator ATT1
Between gain amplifier AMP2 and the gain amplifier between power amplifier and the voltage-controlled attenuator ATT2
AMP3。
Preferably, the active antenna further includes power module, for being powered by output voltage to above-mentioned all kinds of devices,
The power module include the first power output end and second source output end, the first power output end output+5V voltage,
The second source output end exports 3.3V voltage.
Preferably, the power amplifier is 4w power amplifier.
Preferably, the first duplexer is located at antenna end, and second duplexer is located at the adaptation module and leads to
Believe that the cut cable between terminal, the first duplexer and second duplexer are used to control input signal and output signal
Isolation transmission.
Preferably, the chip model of the voltage-controlled attenuator ATT1 and voltage-controlled attenuator ATT2 is AT-113.
Preferably, the model AD8065 of the DC operational amplifier DCAMP.
According to one embodiment of present invention, the present invention also provides a kind of self-adapting regulation method of active antenna, institutes
The method of stating includes the following steps:
S1, after the active antenna powers on, micro-control unit MCU immediately declines the pad value of voltage-controlled attenuator ATT2 to most
Greatly；
S2, after the active antenna receives wireless signal, the micro-control unit MCU reads front end wave detector DET2's
AGC value determines input signal size at this time, then gradually adjusts the pad value of voltage-controlled attenuator ATT2, while detecting end inspection
The AGC value of wave device DET1, when the AGC value of the end wave detector DET1 just corresponds to 2W output, ATT2 stops adjustment；
S3 is adjusted voltage-controlled according to the AGC value of the AGC value of the front end wave detector DET2 and the end wave detector DET1
The pad value of attenuator ATT1；
S4 monitors the output valve of the front end wave detector DET2, the amplitude peak of input signal is repeatedly detected, when continuous 1
When minute is without signal input, the micro-control unit MCU closes power amplifier, so that power amplifier enters suspend mode, when
When signal is greater than threshold value again, the MCU repeating said steps S1~S3.
Preferably, the threshold value is 10DB bigger than wave detector substrate value.
The technical solution of the active antenna and its self-adapting regulation method that provide through the invention not only saves passive antenna
It with the expense of a 10 meters or 50 meters cable, simplifies using difficulty, and the present invention can be automatically by receiving and transmitting signal amplitude adjusted
To most safe (any range signal input of+33dBm or less will not all damage) and optimal communication state, (0-132 meters any
Cable length can keep output amplitude in P-1 or so).
Detailed description of the invention
Fig. 1 is adaptive active Principle of Antenna figure proposed by the present invention；
Fig. 2 is adaptive active antenna adjusting method flow chart proposed by the present invention.
Specific embodiment
A specific embodiment of the invention is explained in detail below in conjunction with attached drawing.
Day provided by the invention leads to ground satellite station adaptive active antenna, as shown in Figure 1, that includes passive antennas
ANT, first duplexer DPX1, the second duplexer DPX2, low-noise amplifier LNA, three gain amplifiers are that gain is put respectively
Big device AMP1, gain amplifier AMP2, gain amplifier AMP3, the second duplexer DPX2, adaptation module and power amplification
Device PA；
The passive antenna ANT is used to receive wireless signal to aerial, and wireless signal is launched, and plays
Effect is sending and receiving for wireless signals.Passive antenna itself is without the antenna of any active device, in reality
In the application of border, the ordinary antennas of common some metallic objects is shown as, is not limited in the present invention, selection is common normal
Passive antenna.
Passive antenna is received after receiving wireless signal by the receiving end of first duplexer, in communication system of the invention
In, sending and receiving for wireless signal is covered, and the setting of duplexer is in order to enable sending signal and receiving signal mutually not
Interference, in the present invention, first duplexer DPX1 are located at passive antenna section, and the first receiving end receives the nothing that passive antenna receives
Line signal enters receiving channel by its second output terminal, and after treatment, through sending out by the wireless signal of duplexer
It penetrates channel and receives signal in the second receiving end, and its first output end then exports wireless signal to passive antenna as transmitting letter
It number sends out.
In transmission channel, through first duplexer export signal successively pass through low-pass filter, gain amplifier AMP1,
Enter the second duplexer DPX2 after the voltage-controlled attenuator ATT1 and gain amplifier AMP2 of adaptation module, in receiving channel
In, after signal enters leading portion coupler COP2, the voltage-controlled attenuator ATT2 of adaptation module after the second duplexer, signal enters
After the end coupler COP1 of gain amplifier AMP3, power amplifier PA and adaptation module, signal is through first duplexer
The second input terminal be transferred to passive antenna and launch.
In the present invention, adaptation module in addition to include the voltage-controlled attenuator ATT1 of front, it is leading portion coupler COP2, voltage-controlled
Attenuator ATT2, end coupler COP1 further include end wave detector DET1, DC operational amplifier DCAMP, front end wave detector
DET2 and micro-control unit MCU, these devices all include transmitting terminal and the receiving end of its own, and signal enters from receiving end,
Emitted end is launched, and is not repeated them here herein.Meanwhile micro-control unit MCU passes through end wave detector DET1, direct current respectively
Operational amplifier DCAMP, front end wave detector DET2 and end coupler COP1, DC operational amplifier DCAMP leading portion coupler
COP2 establishes control channel, specific connection type as shown in Figure 1, simultaneously, also set up in the present invention for micro-control unit MCU with
The control channel of voltage-controlled attenuator ATT1 and power amplifier.
Active antenna of the invention further includes power module, for being powered by output voltage to these components, specifically
Will, the 12-40V Width funtion to come from communication terminal is mainly become into+5V by TPS54560 Switching Power Supply Voltage stabilizing module
Voltage, supply sending and receiving end amplifier use, then become 3.3V voltage from TPS73133 and use to devices such as single-chip microcontrollers.
Above it is exactly the specific structure composition of active antenna of the invention, constitutes the circuit of a complete active antenna
Structure.
In working principle, as shown in Fig. 2, adaptation module is core of the invention part, pass through adaptation module
The efficient operation of entire active antenna is controlled using the pad value for effectively having adjusted voltage-controlled attenuator.
Active antenna is started to work after powering on, and after powering on, the micro-control unit of adaptation module adjusts declining for ATT2 immediately
For depreciation to maximum, the used time herein is that the signal of transmitting terminal input at this time in order to prevent is excessive and burn out subsequent less than 1 millisecond
Component, then MCU immediately obtains the AGC value of front end wave detector DET2, determines the size of input signal at this time, then gradually
The pad value of ATT2 is adjusted, while detecting the AGC value of end wave detector DET1, to determine when stop adjusting ATT2, at this
In invention, when the value of DET1 just correspond to 2W output when, then stop adjust ATT2, due to MCU obtained DET1 and
The AGC value of DET2 at this point, calculating the pad value of transmission channel according to the two values, and then adjusts the pad value of ATT1 extremely
One suitable range, it is bigger due to terminal communications reception dynamic range 40DB or more, so the value of ATT1 does not need especially
Precisely, above content is an adaptive adjustment period, and the time is about 1 second, and after ATT1 is adjusted, MCU starts to detect
The output valve of DET2 is repeatedly detected the amplitude peak of input signal, concurrently sets a threshold value, and the setting of the threshold value takes
It is 10DB bigger than wave detector substrate value as the threshold value for having no signal, if in 1 minute without signal input, MCU control
The enabled of power amplifier is closed, so that power amplifier enters dormant state, to reduce power consumption, if detecting input
When signal is greater than set threshold value again, then MCU carries out repeating detection process above, to realize adaptive adjustment
Scheme.
In the present invention, power amplifier is using 4W power amplifier, and voltage-controlled attenuator ATT1 voltage-controlled declines with described
The chip model for subtracting device ATT2 is AT-113, the model AD8065 of DC operational amplifier DCAMP.
According to still another embodiment of the invention, the present invention also provides a kind of self-adapting regulation methods of active antenna, such as
Shown in Fig. 2, this method includes following steps,
S1, after the active antenna powers on, micro-control unit MCU immediately declines the pad value of voltage-controlled attenuator ATT2 to most
Greatly；
S2, after the active antenna receives wireless signal, the micro-control unit MCU reads front end wave detector DET2's
AGC value determines input signal size at this time, then gradually adjusts the pad value of voltage-controlled attenuator ATT2, while detecting end inspection
The AGC value of wave device DET1, when the AGC value of the end wave detector DET1 just corresponds to 2W output, ATT2 stops adjustment；
S3 is adjusted voltage-controlled according to the AGC value of the AGC value of the front end wave detector DET2 and the end wave detector DET1
The pad value of attenuator ATT1；
S4 monitors the output valve of the front end wave detector DET2, the amplitude peak of input signal is repeatedly detected, when continuous 1
When minute is without signal input, the micro-control unit MCU closes power amplifier, so that power amplifier enters suspend mode, when
When signal is greater than threshold value again, the MCU repeating said steps S1~S3.The threshold value is bigger than wave detector substrate value
10DB。
The adaptive active antenna has several advantages compared to existing active antenna on the market,
1, dynamic range is big, can meet 0-156 meters of (0-39DB decaying, every meter of decaying 0.25DB of cable) cables and arbitrarily connect
It connecing, without will cause the damage of inner antenna active device, while can guarantee optimal communication quality；
2, meet Width funtion input；
3, compare power saving, automatically into dormant state when not communicating；
4, user cost is saved, is not needed again with passive antenna and different length cable.
It is obvious to a person skilled in the art that the embodiment of the present invention is not limited to the details of above-mentioned exemplary embodiment,
And without departing substantially from the spirit or essential attributes of the embodiment of the present invention, this hair can be realized in other specific forms
Bright embodiment.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this
The range of inventive embodiments is indicated by the appended claims rather than the foregoing description, it is intended that being equal for claim will be fallen in
All changes in the meaning and scope of important document are included in the embodiment of the present invention.It should not be by any attached drawing mark in claim
Note is construed as limiting the claims involved.Furthermore, it is to be understood that one word of " comprising " does not exclude other units or steps, odd number is not excluded for
Plural number.Multiple units, module or the device stated in system, device or terminal claim can also be by the same units, mould
Block or device are implemented through software or hardware.The first, the second equal words are used to indicate names, and are not offered as any specific
Sequence.
Finally it should be noted that embodiment of above is only to illustrate the technical solution of the embodiment of the present invention rather than limits,
Although the embodiment of the present invention is described in detail referring to the above better embodiment, those skilled in the art should
Understand, can modify to the technical solution of the embodiment of the present invention or equivalent replacement should not all be detached from the skill of the embodiment of the present invention
The spirit and scope of art scheme.
Claims (10)
1. a kind of day leads to ground satellite station adaptive active antenna, which is characterized in that the active antenna includes passive antenna
ANT, first duplexer, low-noise amplifier, adaptation module and power amplifier；
The passive antenna ANT is used to receive and emit wireless signal to aerial；
The adaptation module includes wireless signal input terminal, signal control terminal and signal transmitting terminal, and the wireless signal is defeated
Entering end and receives the signal from the low-noise amplifier, the signal control terminal passes through the size of monitoring wireless input signal,
The pad value of adaptive adjustment signal, to control the enabled of the power amplifier, the wireless signal transmitting terminal will be through believing
The signal of number control terminal output is launched；
The passive antenna ANT receives the output signal from the first duplexer and as transmitting signal.
2. active antenna according to claim 1, which is characterized in that described from defeated including being located at wireless signal using module
The voltage-controlled attenuator ATT1 for entering end, positioned at the voltage-controlled attenuator ATT2 of signal control terminal, DC operational amplifier DCAMP, transmitting
End coupler COP1, leading portion coupler COP2, end wave detector DET1, front end wave detector DET2 and the microcontroller list in channel
First MCU；
The voltage-controlled attenuator ATT1 receives the signal issued from the low-noise amplifier, and the signal is passed through second pair
The signal control terminal is input to after work device；
The micro-control unit MCU of the signal control terminal controls the voltage-controlled attenuator before the passive antenna receives signal
ATT2 decays to maximum value, after passive antenna receives wireless signal, wave detector DET2 in front end described in real-time detection and described
The AGC value of end wave detector DET1 adjusts the voltage-controlled attenuator ATT2 and voltage-controlled attenuator ATT1, described micro- after adjustment
The output valve of wave detector DET2 in front end described in control unit real-time detection is to control the enabled of the power amplifier.
3. active antenna according to claim 2, which is characterized in that the active antenna further includes gain amplifier, institute
Stating gain amplifier includes the gain amplifier AMP1 between the low-pass filtering and the voltage-controlled attenuator ATT1,
Gain amplifier AMP2 between the voltage-controlled attenuator ATT1 and the second duplexer and it is located at power amplifier and the pressure
Control the gain amplifier AMP3 between attenuator ATT2.
4. active antenna according to claim 3, which is characterized in that the active antenna further includes power module, is used for
It is powered by output voltage to above-mentioned all kinds of devices, the power module includes that the first power output end and second source export
End, the first power output end output+5V voltage, the second source output end export 3.3V voltage.
5. active antenna according to claim 4, which is characterized in that the power amplifier is 4w power amplifier.
6. active antenna according to claim 5, which is characterized in that the first duplexer is located at antenna end, and described
Cut cable of two duplexers between the adaptation module and communication terminal, the first duplexer and second duplex
What device was used to control input signal and output signal is isolated transmission.
7. active antenna according to claim 6, which is characterized in that the voltage-controlled attenuator ATT1 and the voltage-controlled decaying
The chip model of device ATT2 is AT-113.
8. active antenna according to claim 6, which is characterized in that the model of the DC operational amplifier DCAMP
AD8065。
9. a kind of self-adapting regulation method of active antenna according to claims 1-8, which is characterized in that the method includes
Following steps:
S1, after the active antenna powers on, micro-control unit MCU immediately declines the pad value of voltage-controlled attenuator ATT2 to maximum；
S2, after the active antenna receives wireless signal, the micro-control unit MCU reads the AGC of front end wave detector DET2
Value determines input signal size at this time, then gradually adjusts the pad value of voltage-controlled attenuator ATT2, while detecting end wave detector
The AGC value of DET1, when the AGC value of the end wave detector DET1 just corresponds to 2W output, ATT2 stops adjustment；
S3 adjusts voltage-controlled decaying according to the AGC value of the AGC value of the front end wave detector DET2 and the end wave detector DET1
The pad value of device ATT1；
S4 monitors the output valve of the front end wave detector DET2, is repeatedly detected the amplitude peak of input signal, when continuous 1 minute
When not having signal input, the micro-control unit MCU closes power amplifier and works as signal so that power amplifier enters suspend mode
When being greater than threshold value again, the MCU repeating said steps S1~S3.
10. the self-adapting regulation method of active antenna according to claim 9, which is characterized in that the threshold value be than
The big 10DB of wave detector substrate value.
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| CN201910241701.7A CN110034773B (en) | 2019-03-28 | 2019-03-28 | Antenna satellite ground station self-adaptive active antenna and adjusting method thereof |
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| CN201910241701.7A CN110034773B (en) | 2019-03-28 | 2019-03-28 | Antenna satellite ground station self-adaptive active antenna and adjusting method thereof |
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| CN110034773B CN110034773B (en) | 2024-02-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN116707562B (en) * | 2023-08-07 | 2023-10-31 | 北京云驰未来科技有限公司 | 5G communication equipment PA protection system and method for automobile |
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| CN110034773B (en) | 2024-02-13 |
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