CN109347509A - A kind of gain compensating method of active antenna, device and active antenna - Google Patents
A kind of gain compensating method of active antenna, device and active antenna Download PDFInfo
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- CN109347509A CN109347509A CN201811293164.2A CN201811293164A CN109347509A CN 109347509 A CN109347509 A CN 109347509A CN 201811293164 A CN201811293164 A CN 201811293164A CN 109347509 A CN109347509 A CN 109347509A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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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
- H04B2001/0408—Circuits with power amplifiers
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Abstract
The invention discloses a kind of gain compensating method of active antenna, device and active antennas, this method comprises: setting the first preset value for the pad value of the first radio frequency attenuator of radio frequency uplink in active antenna and setting the second preset value for the pad value of the second radio frequency attenuator of radio frequency downlink in active antenna；The temperature value of active antenna is detected by temperature sensor；According to temperature value and preset temperature-compensating rule, third preset value corresponding with temperature value is set by the pad value of the first radio frequency attenuator, and set the 4th preset value corresponding with temperature value for the pad value of the second radio frequency attenuator.This method passes through preset temperature-compensating rule, the gain of active antenna is efficiently controlled according to the temperature value of active antenna, the problem of being unable to reach coverage area because of change in gain or its radio frequency uplink, the gain imbalance of downlink when active antenna uses in extreme temperature environment is efficiently solved, while also improving the precision of gain compensation.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of gain compensating method of active antenna, device with it is active
Antenna.
Background technique
Antenna directly affects the efficiency of communication system as the carrier to external radiation and reception signal, the quality of performance
And the Stability and dependability of transmission signal.With communication technology advances, active antenna is got in the application of field of mobile communication
Come more.Active antenna will emit and receive Forward, solve same area coverage, active antenna do not need it is very high-power, and
Receiving sensitivity is high, and such active antenna gradually becomes a kind of mainstream antenna form of wireless signal high quality covering.Due to having
The installation of source antenna, use environment uncertainty so that active radio frequency linking element often works extreme in active antenna
High temperature or low-temperature condition, the at this moment gain of the radio-frequency devices such as amplifier, low-noise amplifier in active radio frequency linking element with
Temperature change and changing causes that the entire gain of active antenna changes or uplink and downlink gain imbalance is to make coverage area
At influence.
Although the prior art is also made that the gain compensation of radio-frequency devices in active antenna and is correspondingly improved, it is existing
There is technology still and cannot achieve active antenna can guarantee its radio frequency uplink, downlink gain in extreme temperature environment
Stability, to reduce variation influence caused by its coverage area of environment temperature.
Summary of the invention
The object of the present invention is to provide a kind of gain compensating method of active antenna, device and active antennas, can be effective
Ground solves when active antenna uses in extreme temperature environment due to change in gain or its radio frequency uplink and radio frequency downlink chain
The gain on road is uneven and the problem of be unable to reach coverage area, while also improving the precision of gain compensation.
The embodiment of the invention provides a kind of gain compensating methods of active antenna, comprising:
The first preset value is set by the pad value of the first radio frequency attenuator of radio frequency uplink in active antenna, with
And the second preset value is set by the pad value of the second radio frequency attenuator of radio frequency downlink in active antenna；
The temperature value of the active antenna is detected by temperature sensor；
According to the temperature value and preset temperature-compensating rule, the pad value of first radio frequency attenuator is arranged
For third preset value corresponding with the temperature value, and by the pad value of second radio frequency attenuator be set as with it is described
Corresponding 4th preset value of temperature value.
Preferably, the temperature-compensating rule establishment step that the method also includes carrying out in microwave dark room below:
The first radiofrequency signal of signal source output is received by the active antenna；Wherein, first radiofrequency signal according to
It is secondary to be exported by the signal source, transmitting antenna, it is received via the radio frequency uplink of the active antenna, and by frequency spectrograph
It receives；
By the greenhouse cooling of the active antenna to the first temperature threshold of setting, and according to the temperature interval pair of setting
First temperature threshold heats up, and current temperature value is recorded as adjustment temperature value；
The pad value of first radio frequency attenuator is adjusted, so that the gain of the radio frequency uplink meets first
Preset condition, and the pad value of first radio frequency attenuator adjusted is recorded as the first adjustment pad value；
It controls signal source and the second radiofrequency signal is exported by the active antenna；Wherein, second radiofrequency signal via
The radio frequency downlink of the active antenna exports, and is received by receiving antenna by frequency spectrograph；
By the greenhouse cooling of the active antenna to the first temperature threshold of setting, and according to the temperature interval pair of setting
First temperature threshold heats up, and current temperature value is recorded as adjustment temperature value；
The pad value of second radio frequency attenuator is adjusted, so that the gain of the radio frequency downlink meets second
Preset condition, and the pad value of second radio frequency attenuator adjusted is recorded as second adjustment pad value；
According to the first adjustment pad value, the second adjustment pad value and accordingly temperature value is adjusted, obtained described
Temperature-compensating rule.
Preferably, the pad value of adjustment first radio frequency attenuator, so that the increasing of the radio frequency uplink
Benefit meets first preset condition, and the pad value of first radio frequency attenuator adjusted is recorded as the first adjustment
Pad value specifically includes:
Calculate the radio frequency uplink when pad value of first radio frequency attenuator is adjusted to the first adjustment pad value
The actual gain of link, and calculate the actual gain of the radio frequency uplink and the initial gain of the radio frequency uplink
The first difference；
Wherein, the initial gain of the radio frequency uplink is at normal temperature, by the radio frequency uplink of the active antenna
The difference of first radiofrequency signal of the first radiofrequency signal and signal source output after link reception.
Preferably, first preset condition are as follows: the absolute value of first difference is not more than first threshold.
Preferably, the method also includes:
Judge whether the adjustment temperature value is greater than the second temperature threshold value of setting；
When the adjustment temperature value is greater than the second temperature threshold value, terminate to adjust the temperature of the active antenna；
When the adjustment temperature value is not more than the second temperature threshold value, continue to cool down and adjust described first
The pad value of radio frequency attenuator and second radio frequency attenuator.
Preferably, the temperature interval is 1 DEG C.
Preferably, the first threshold is 0.5dB.
The embodiment of the invention also provides a kind of gain compensation means of active antenna, comprising:
First pad value setup module, for the first radio frequency attenuator of radio frequency uplink in active antenna to decline
Depreciation is set as the first preset value, and the pad value of the second radio frequency attenuator of radio frequency downlink in active antenna is set
It is set to the second preset value；
Temperature detecting module, for detecting the temperature value of the active antenna by temperature sensor；
Second pad value setup module, for regular according to the temperature value and preset temperature-compensating, by described first
The pad value of radio frequency attenuator is set as third preset value corresponding with the temperature value, and by second rf attenuation
The pad value of device is set as the 4th preset value corresponding with the temperature value.
Preferably, described device further include:
Signal receiving module, for receiving the first radiofrequency signal of signal source output by the active antenna；Wherein,
First radiofrequency signal passes sequentially through the signal source, transmitting antenna output, via the radio frequency uplink of the active antenna
Road receives, and is received by frequency spectrograph；
First temperature adjusts module, for the first temperature threshold by the greenhouse cooling of the active antenna to setting, and
It heats up according to the temperature interval of setting to first temperature threshold, and current temperature value is recorded as adjustment temperature value；
First pad value adjusts module, for adjusting the pad value of first radio frequency attenuator, so that the radio frequency
The gain of uplink meets the first preset condition, and the pad value of first radio frequency attenuator adjusted is recorded as
The first adjustment pad value；
Signal output module never controls signal source by the active antenna and exports the second radiofrequency signal；Wherein, institute
It states the second radiofrequency signal to export via the radio frequency downlink of the active antenna, and is received by receiving antenna by frequency spectrograph；
Second temperature adjusts module, for the first temperature threshold by the greenhouse cooling of the active antenna to setting, and
It heats up according to the temperature interval of setting to first temperature threshold, and current temperature value is recorded as adjustment temperature value；
Second pad value adjusts module, for adjusting the pad value of second radio frequency attenuator, so that the radio frequency
The gain of downlink meets the second preset condition, and the pad value of second radio frequency attenuator adjusted is recorded as
Second adjustment pad value；
Temperature-compensating rule generation module, for according to the first adjustment pad value, the second adjustment pad value and
Corresponding adjustment temperature value obtains the temperature-compensating rule.
The embodiment of the invention also provides a kind of active antenna, the active antenna is penetrated including the first RF switch, second
Frequency switch, the first radio frequency attenuator, the second radio frequency attenuator, low-noise amplifier, power amplifier, central processing unit, temperature
Sensor, antenna oscillator and antenna house；Wherein, the antenna end of second RF switch and extraneous radio frequency (RF) coaxial connector
Connection, the receiving end of second RF switch are connect with the input terminal of second radio frequency attenuator, and second radio frequency declines
The output end for subtracting device is connect with the input terminal of the power amplifier, and the output end of the power amplifier is penetrated with described first
The transmitting terminal connection of frequency switch, the antenna end of first RF switch are connect with the antenna oscillator；First radio frequency is opened
The receiving end of pass is connect with the input terminal of the low-noise amplifier, the output end of the low-noise amplifier and described first
The input terminal of radio frequency attenuator connects, the transmitting terminal of the output end of first radio frequency attenuator and first RF switch
Connection；The central processing unit control with the control terminal of first radio frequency attenuator, second radio frequency attenuator respectively
End, temperature sensor connection.
Compared with the existing technology, the beneficial effect of the gain compensating method of a kind of active antenna provided in an embodiment of the present invention
Fruit is: the gain compensating method of the active antenna, comprising: the first radio frequency of radio frequency uplink in active antenna declines
The pad value for subtracting device is set as the first preset value, and by the second radio frequency attenuator of radio frequency downlink in active antenna
Pad value is set as the second preset value；The temperature value of the active antenna is detected by temperature sensor；According to the temperature value
With preset temperature-compensating rule, corresponding with the temperature value the is set by the pad value of first radio frequency attenuator
Three preset values, and the 4th preset value corresponding with the temperature value is set by the pad value of second radio frequency attenuator.
This method can efficiently control the increasing of active antenna by preset temperature-compensating rule according to the temperature value of active antenna
Benefit can efficiently solve when active antenna uses in extreme temperature environment due to change in gain or its radio frequency uplink
It is uneven with the gain of radio frequency downlink and the problem of be unable to reach coverage area, while also improving the essence of gain compensation
Degree.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of active antenna provided in an embodiment of the present invention；
Fig. 2 is a kind of flow diagram of the gain compensating method of active antenna provided in an embodiment of the present invention；
Fig. 3 is a kind of principle of the radio frequency uplink temperature-compensating rule of active antenna provided in an embodiment of the present invention
Flow chart；
Fig. 4 is a kind of principle of the radio frequency downlink temperature-compensating rule of active antenna provided in an embodiment of the present invention
Flow chart；
Fig. 5 is a kind of flow chart of the implementation process of the gain compensating method of active antenna provided in an embodiment of the present invention；
Fig. 6 is a kind of flow chart of the gain compensation means of active antenna provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
Referring to Fig. 1, it is a kind of structural schematic diagram of active antenna provided in an embodiment of the present invention, the active day
Line includes the first RF switch 1, the second RF switch 2, the first radio frequency attenuator 3, the second radio frequency attenuator 4, low noise amplification
Device 5, power amplifier 6, central processing unit 7, temperature sensor 8, antenna oscillator 9 and antenna house 10；Wherein, it described second penetrates
The antenna end of frequency switch 2 is connect with the radio frequency (RF) coaxial connector in the external world, the receiving end of second RF switch 2 and described the
The input terminal of two radio frequency attenuators 4 connects, the input of the output end of second radio frequency attenuator 4 and the power amplifier 6
End connection, the output end of the power amplifier 6 are connect with the transmitting terminal of first RF switch 1, and first radio frequency is opened
The antenna end of pass 1 is connect with the antenna oscillator 9；The receiving end of first RF switch 1 and the low-noise amplifier 5
Input terminal connection, the output end of the low-noise amplifier 5 connect with the input terminal of first radio frequency attenuator 3, institute
The output end for stating the first radio frequency attenuator 3 is connect with the transmitting terminal of first RF switch 1；The central processing unit 7 is distinguished
Connect with the control terminal of first radio frequency attenuator 3, the control terminal of second radio frequency attenuator 4, the temperature sensor 8
It connects.
In the present embodiment, the radio frequency (RF) coaxial connector is typically considered and is installed in pcb board, on cable or installs
A kind of element on instrument mainly serves as a connection as transmission line electrical connection or isolated element；The antenna vibration
Son is the component on active antenna, has the function of being oriented to and amplifying electromagnetic wave, the electromagnetic signal for receiving active antenna
It is stronger；The antenna house 10 is the works for protecting active antenna from external environment influence.
Referring to Fig. 2, it is a kind of process signal of the gain compensating method of active antenna provided in an embodiment of the present invention
Figure, this method are applied to above-mentioned active antenna, specifically includes the following steps:
S100: first is set by the pad value of the first radio frequency attenuator of radio frequency uplink in active antenna and is preset
Value, and the second preset value is set by the pad value of the second radio frequency attenuator of radio frequency downlink in active antenna；
S200: the temperature value of the active antenna is detected by temperature sensor；
S300: according to the temperature value and preset temperature-compensating rule, by the pad value of first radio frequency attenuator
Be set as third preset value corresponding with the temperature value, and by the pad value of second radio frequency attenuator be set as with
Corresponding 4th preset value of the temperature value.
It in the present embodiment, can be 15dB by first preset value and the second preset value value.By described
The corresponding third preset value of temperature value, temperature value and the 4th preset value are obtained in preset temperature-compensating rule, according to the temperature
Corresponding relationship between angle value and third preset value and the 4th preset value, in the actual temp value for detecting the active antenna
When, can according to the third preset value and the 4th preset value respectively to the pad value of first radio frequency attenuator and
The pad value of second radio frequency attenuator is adjusted, to efficiently control the gain of active antenna, solves active day
When line uses in extreme temperature environment due to change in gain or its uplink, downlink gain is uneven and is unable to reach and covers
The problem of lid range, while the precision of gain compensation is also improved, wherein table 1 is one obtained in the temperature-compensating rule
The pad value of portion temperature value, the pad value of the first radio frequency attenuator and the second radio frequency attenuator.
Table 1
In an alternative embodiment, the method also includes the temperature-compensating rules carried out in microwave dark room below to build
Vertical step:
The first radiofrequency signal of signal source output is received by the active antenna；Wherein, first radiofrequency signal according to
It is secondary to be exported by the signal source, transmitting antenna, it is received via the radio frequency uplink of the active antenna, and by frequency spectrograph
It receives；
By the greenhouse cooling of the active antenna to the first temperature threshold of setting, and according to the temperature interval pair of setting
First temperature threshold heats up, and current temperature value is recorded as adjustment temperature value；
The pad value of first radio frequency attenuator is adjusted, so that the gain of the radio frequency uplink meets first
Preset condition, and the pad value of first radio frequency attenuator adjusted is recorded as the first adjustment pad value；
It controls signal source and the second radiofrequency signal is exported by the active antenna；Wherein, second radiofrequency signal via
The radio frequency downlink of the active antenna exports, and is received by receiving antenna by frequency spectrograph；
By the greenhouse cooling of the active antenna to the first temperature threshold of setting, and according to the temperature interval pair of setting
First temperature threshold heats up, and current temperature value is recorded as adjustment temperature value；
The pad value of second radio frequency attenuator is adjusted, so that the gain of the radio frequency downlink meets second
Preset condition, and the pad value of second radio frequency attenuator adjusted is recorded as second adjustment pad value；
According to the first adjustment pad value, the second adjustment pad value and accordingly temperature value is adjusted, obtained described
Temperature-compensating rule.
It in the present embodiment, by the temperature setting of the active antenna is first room temperature value, then by the active antenna
For greenhouse cooling to the first temperature threshold of setting, first temperature threshold is -45 DEG C.
In an alternative embodiment, the pad value of adjustment first radio frequency attenuator, so that described penetrate
The gain of frequency uplink meets first preset condition, and by the pad value of first radio frequency attenuator adjusted
It is recorded as the first adjustment pad value, is specifically included:
Calculate the radio frequency uplink when pad value of first radio frequency attenuator is adjusted to the first adjustment pad value
The actual gain of link, and calculate the actual gain of the radio frequency uplink and the initial gain of the radio frequency uplink
The first difference；
Wherein, the initial gain of the radio frequency uplink is at normal temperature, by the radio frequency uplink of the active antenna
The difference of first radiofrequency signal of the first radiofrequency signal and signal source output after link reception.
In the present embodiment, the actual gain of the radio frequency uplink can be due to the temperature change of the active antenna
Variation, so controlling the radio frequency uplink by adjusting the pad value of the first radio frequency attenuator in the radio frequency uplink
The actual gain of link is differed with the initial gain of the radio frequency uplink in a certain range, is unlikely to make the active day
Because of the variation of temperature great change occurs for the gain of line, so that active antenna radiation or received signal be made to be unable to reach
Coverage area.
In an alternative embodiment, first preset condition are as follows: the absolute value of first difference is no more than the
One threshold value.
In an alternative embodiment, the method also includes:
Judge whether the adjustment temperature value is greater than the second temperature threshold value of setting；
When the adjustment temperature value is greater than the second temperature threshold value, terminate to adjust the temperature of the active antenna；
When the adjustment temperature value is not more than the second temperature threshold value, continue to cool down and adjust described first
The pad value of radio frequency attenuator and second radio frequency attenuator.
In the present embodiment, the second temperature threshold value is 80 DEG C, mainly makes the gain compensation side of the active antenna
Method is carried out in -45 DEG C~80 DEG C ranges.
In an alternative embodiment, the temperature interval is 1 DEG C.
In the present embodiment, setting the temperature interval as 1 DEG C is to find out a variety of different temperatures situations as far as possible
Under, the pad value that the radio frequency attenuator in the radio frequency uplink and radio frequency downlink of the active antenna needs to modify, from
And realize the adjustment of the gain to the active antenna.
In an alternative embodiment, the first threshold is 0.5dB.
In the present embodiment, it is to make the gain stabilization of the active antenna in 0.5dB that the first threshold, which is 0.5dB,
In range.
In an alternative embodiment, the pad value of adjustment second radio frequency attenuator, so that described penetrate
The gain of frequency downlink meets the second preset condition, and the pad value of second radio frequency attenuator adjusted is recorded
For second adjustment pad value, specifically include:
Calculate the radio frequency downlink when pad value of second radio frequency attenuator is adjusted to the second adjustment pad value
The actual gain of link, and calculate the actual gain of the radio frequency downlink and the initial gain of the radio frequency downlink
The second difference；
Wherein, the initial gain of the radio frequency downlink is at normal temperature, by the radio frequency downlink of the active antenna
Link exports and by the second radiofrequency signal of the second radiofrequency signal and signal source output after receiving antenna reception
Difference.
In the present embodiment, mainly the gain compensating method of the radio frequency downlink of the active antenna is said
Bright, the working principle and process of the gain compensating method of the radio frequency downlink of the present embodiment can refer to above-mentioned to radio frequency uplink
The description of the gain compensating method of link, details are not described herein.
Referring to figure 3., Fig. 4 and Fig. 5 understands for convenience, separately below to radio frequency uplink temperature-compensating rule
The implementation process of the gain compensating method of principle, the principle of radio frequency downlink temperature-compensating rule and the active antenna
It is illustrated:
The principle of radio frequency uplink temperature-compensating rule:
Step 1: active antenna work controls the first rf attenuation in radio frequency uplink state, central processor CPU 10
The pad value of 3 devices is 15dB；
Step 2: active antenna is placed in microwave dark room, the radio frequency (RF) coaxial connector connection frequency connecting with active antenna
Spectrometer places a transmitting antenna, transmitting antenna connecting signal source in active antenna radiation direction；Signal source output first is penetrated
Frequency signal definition is Pin, and the reception of frequency spectrograph first radiofrequency signal is defined as Pout；
Step 3: the initial gain of active antenna radio frequency uplink is defined as Gup, Gup=Pout-Pin；
Step 4: the temperature for reducing active antenna makes central processor CPU 10 detect temperature sensor 8 to n DEG C, defines n
=-45；
Step 5: received first radiofrequency signal of this time-frequency spectrometer is defined as Pout~n；
Step 6: the actual gain of active antenna radio frequency uplink is defined as Gup~n at this time, and Gup~n=Pout~
n-Pin；
The pad value that the first radio frequency attenuator 3 is arranged in step 7:CPU is An so that the actual gain of radio frequency uplink
Gup~n meets | Gup~n-Gup | " 0.5dB；
Step 8: central processor CPU 10 records temperature value n, the pad value An of the first radio frequency attenuator 3, formation temperature
The one-to-one reference value of pad value An of value and the first radio frequency attenuator 3, such as table 1；
Step 9: whether judge n > 80 DEG C, 10 are thened follow the steps if not, are if it is terminated；
Step 10:n=n+1 increases the temperature of active antenna so that central processor CPU 10 detects temperature sensor 8
To n degrees Celsius.
The principle of radio frequency downlink temperature-compensating rule:
Step 1: active antenna work Uplink State at radio frequencies.Central processor CPU 10 controls the second rf attenuation
The pad value of device is 15dB；
Step 2: active antenna is placed in microwave dark room, signal source and the radio frequency (RF) coaxial connector for connecting active antenna
Connection, the second radiofrequency signal of output are defined as Pin, place a receiving antenna in active antenna radiation direction, receiving antenna connects
Frequency spectrograph is connect, received second radiofrequency signal of frequency spectrograph is defined as Pout；
Step 3: active antenna radio frequency downlink initial gain is defined as Gdown, Gdown=Pout-Pin；
Step 4: the temperature for reducing active antenna makes central processor CPU 10 detect temperature sensor 8 to n DEG C, defines n
=-45；
Step 5: received second radiofrequency signal of this time-frequency spectrometer is defined as Pout~n；
Step 6: active antenna radio frequency downlink actual gain is defined as Gdown~n, Gdown~n=Pout at this time
~n-Pin；
Step 7: the pad value that the second radio frequency attenuator 4 is arranged in central processor CPU 10 is Bn so that radio frequency downlink chain
Road actual gain Gdown~n meets | Gdown~n-Gdown | " 0.5dB；
Step 8: central processor CPU 10 records temperature value n, the pad value Bn of the second radio frequency attenuator 4, formation temperature
The one-to-one reference value of pad value Bn of value and the second radio frequency attenuator 4, such as table 1；
Step 9: whether judge n > 80 DEG C, 10 are thened follow the steps if not, are if it is terminated；
Step 10:n=n+1 increases the temperature of active antenna so that central processor CPU 10 detects temperature sensor 8
To n degrees Celsius.
The implementation process of the gain compensating method of active antenna:
Step 1: central processor CPU 10 controls the first radio frequency attenuator 3 and the pad value of the second radio frequency attenuator 4 is
15dB；
Step 2: the temperature value n of the detection temperature sensor 8 of central processor CPU 10；
Step 3: declining for the first radio frequency attenuator 3 is arranged according to the temperature value in reference value table 1 in central processor CPU 10
Depreciation An, the pad value Bn of the second radio frequency attenuator 4.
Referring to Fig. 6, it is a kind of flow chart of the gain compensation means of active antenna provided in an embodiment of the present invention,
The gain compensation means of the active antenna, comprising:
First pad value setup module 1, for the first radio frequency attenuator of radio frequency uplink in active antenna to decline
Depreciation is set as the first preset value, and the pad value of the second radio frequency attenuator of radio frequency downlink in active antenna is set
It is set to the second preset value；
Temperature detecting module 2, for detecting the temperature value of the active antenna by temperature sensor；
Second pad value setup module 3, for according to the temperature value and preset temperature-compensating rule, by described the
The pad value of one radio frequency attenuator is set as third preset value corresponding with the temperature value, and second radio frequency is declined
The pad value for subtracting device is set as the 4th preset value corresponding with the temperature value.
In the present embodiment, pre- by temperature value obtained in preset temperature-compensating rule, the corresponding third of temperature value
If value and the 4th preset value, according to the relationship between the temperature value and third preset value and the 4th preset value, detecting
It, can be according to the third preset value and the 4th preset value respectively to described when stating the actual temp value of active antenna
The pad value of the pad value of one radio frequency attenuator and second radio frequency attenuator is adjusted, to efficiently control active
The gain of antenna solves when active antenna uses in extreme temperature environment due to change in gain or its radio frequency uplink
It is uneven with the gain of radio frequency downlink and the problem of be unable to reach coverage area, while also improving the essence of gain compensation
Degree.
In an alternative embodiment, described device further include:
Signal receiving module, for receiving the first radiofrequency signal of signal source output by the active antenna；Wherein,
First radiofrequency signal passes sequentially through the signal source, transmitting antenna output, via the radio frequency uplink of the active antenna
Road receives, and is received by frequency spectrograph；
First temperature adjusts module, for the first temperature threshold by the greenhouse cooling of the active antenna to setting, and
It heats up according to the temperature interval of setting to first temperature threshold, and current temperature value is recorded as adjustment temperature value；
First pad value adjusts module, for adjusting the pad value of first radio frequency attenuator, so that the radio frequency
The gain of uplink meets the first preset condition, and the pad value of first radio frequency attenuator adjusted is recorded as
The first adjustment pad value；
Signal output module never controls signal source by the active antenna and exports the second radiofrequency signal；Wherein, institute
It states the second radiofrequency signal to export via the radio frequency downlink of the active antenna, and is received by receiving antenna by frequency spectrograph；
Second temperature adjusts module, for the first temperature threshold by the greenhouse cooling of the active antenna to setting, and
It heats up according to the temperature interval of setting to first temperature threshold, and current temperature value is recorded as adjustment temperature value；
Second pad value adjusts module, for adjusting the pad value of second radio frequency attenuator, so that the radio frequency
The gain of downlink meets the second preset condition, and the pad value of second radio frequency attenuator adjusted is recorded as
Second adjustment pad value；
Temperature-compensating rule generation module, for according to the first adjustment pad value, the second adjustment pad value and
Corresponding adjustment temperature value obtains the temperature-compensating rule.
Compared with the existing technology, the beneficial effect of the gain compensating method of a kind of active antenna provided in an embodiment of the present invention
Fruit is: the gain compensating method of the active antenna, comprising: the first radio frequency of radio frequency uplink in active antenna declines
The pad value for subtracting device is set as the first preset value, and by the second radio frequency attenuator of radio frequency downlink in active antenna
Pad value is set as the second preset value；The temperature value of the active antenna is detected by temperature sensor；According to the temperature value
With preset temperature-compensating rule, corresponding with the temperature value the is set by the pad value of first radio frequency attenuator
Three preset values, and the 4th preset value corresponding with the temperature value is set by the pad value of second radio frequency attenuator.
This method can efficiently control the increasing of active antenna by preset temperature-compensating rule according to the temperature value of active antenna
Benefit can efficiently solve when active antenna uses in extreme temperature environment due to change in gain or its radio frequency uplink
It is uneven with the gain of radio frequency downlink and the problem of be unable to reach coverage area, while also improving the essence of gain compensation
Degree.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also regard
For protection scope of the present invention.
Claims (10)
1. a kind of gain compensating method of active antenna characterized by comprising
The first preset value is set by the pad value of the first radio frequency attenuator of radio frequency uplink in active antenna, and will be had
The pad value of the second radio frequency attenuator of radio frequency downlink is set as the second preset value in source antenna；
The temperature value of the active antenna is detected by temperature sensor；
According to the temperature value and preset temperature-compensating rule, set the pad value of first radio frequency attenuator to and institute
The corresponding third preset value of temperature value is stated, and sets the pad value of second radio frequency attenuator to and the temperature value pair
The 4th preset value answered.
2. the gain compensating method of active antenna as described in claim 1, which is characterized in that the method also includes existing below
The temperature-compensating rule establishment step carried out in microwave dark room:
The first radiofrequency signal of signal source output is received by the active antenna；Wherein, first radiofrequency signal is successively led to
The signal source, transmitting antenna output are crossed, is received via the radio frequency uplink of the active antenna, and received by frequency spectrograph；
By the greenhouse cooling of the active antenna to the first temperature threshold of setting, and according to the temperature interval of setting to described the
One temperature threshold heats up, and current temperature value is recorded as adjustment temperature value；
The pad value of first radio frequency attenuator is adjusted, so that the gain of the radio frequency uplink meets the first default item
Part, and the pad value of first radio frequency attenuator adjusted is recorded as the first adjustment pad value；
It controls signal source and the second radiofrequency signal is exported by the active antenna；Wherein, second radiofrequency signal is via described
The radio frequency downlink of active antenna exports, and is received by receiving antenna by frequency spectrograph；
By the greenhouse cooling of the active antenna to the first temperature threshold of setting, and according to the temperature interval of setting to described the
One temperature threshold heats up, and current temperature value is recorded as adjustment temperature value；
The pad value of second radio frequency attenuator is adjusted, so that the gain of the radio frequency downlink meets the second default item
Part, and the pad value of second radio frequency attenuator adjusted is recorded as second adjustment pad value；
According to the first adjustment pad value, the second adjustment pad value and accordingly temperature value is adjusted, obtains the temperature
Offset rule.
3. the gain compensating method of active antenna as claimed in claim 2, which is characterized in that adjustment first radio frequency
The pad value of attenuator, so that the gain of the radio frequency uplink meets first preset condition, and will be adjusted
The pad value of first radio frequency attenuator is recorded as the first adjustment pad value, specifically includes:
Calculate the radio frequency uplink when pad value of first radio frequency attenuator is adjusted to the first adjustment pad value
Actual gain, and calculate the first of the actual gain of the radio frequency uplink and the initial gain of the radio frequency uplink
Difference；
Wherein, the initial gain of the radio frequency uplink is at normal temperature, by the radio frequency uplink of the active antenna
The difference of first radiofrequency signal of the first radiofrequency signal and signal source output after reception.
4. the gain compensating method of active antenna as claimed in claim 3, which is characterized in that first preset condition are as follows:
The absolute value of first difference is not more than first threshold.
5. the gain compensating method of active antenna as claimed in claim 2, which is characterized in that the method also includes:
Judge whether the adjustment temperature value is greater than the second temperature threshold value of setting；
When the adjustment temperature value is greater than the second temperature threshold value, terminate to adjust the temperature of the active antenna；
When the adjustment temperature value is not more than the second temperature threshold value, continues to cool down and adjust first radio frequency and decline
Subtract the pad value of device and second radio frequency attenuator.
6. the gain compensating method of active antenna as claimed in claim 2, which is characterized in that the temperature interval is 1 DEG C.
7. the gain compensating method of active antenna as claimed in claim 4, which is characterized in that the first threshold is 0.5dB.
8. a kind of gain compensation means of active antenna characterized by comprising
First pad value setup module, for setting the pad value of the first radio frequency attenuator of radio frequency uplink in active antenna
It is set to the first preset value, and sets second for the pad value of the second radio frequency attenuator of radio frequency downlink in active antenna
Preset value；
Temperature detecting module, for detecting the temperature value of the active antenna by temperature sensor；
Second pad value setup module, for regular according to the temperature value and preset temperature-compensating, by first radio frequency
The pad value of attenuator is set as third preset value corresponding with the temperature value, and declining second radio frequency attenuator
Depreciation is set as the 4th preset value corresponding with the temperature value.
9. the gain compensation means of active antenna as claimed in claim 8, which is characterized in that described device further include:
Signal receiving module, for receiving the first radiofrequency signal of signal source output by the active antenna；Wherein, described
One radiofrequency signal passes sequentially through the signal source, transmitting antenna output, receives via the radio frequency uplink of the active antenna,
And it is received by frequency spectrograph；
First temperature adjusts module, for the first temperature threshold by the greenhouse cooling of the active antenna to setting, and according to
The temperature interval of setting heats up to first temperature threshold, and current temperature value is recorded as adjustment temperature value；
First pad value adjusts module, for adjusting the pad value of first radio frequency attenuator, so that the radio frequency uplink
The gain of link meets the first preset condition, and the pad value of first radio frequency attenuator adjusted is recorded as the first tune
Whole pad value；
Signal output module never controls signal source by the active antenna and exports the second radiofrequency signal；Wherein, described second
Radiofrequency signal is exported via the radio frequency downlink of the active antenna, and is received by receiving antenna by frequency spectrograph；
Second temperature adjusts module, for the first temperature threshold by the greenhouse cooling of the active antenna to setting, and according to
The temperature interval of setting heats up to first temperature threshold, and current temperature value is recorded as adjustment temperature value；
Second pad value adjusts module, for adjusting the pad value of second radio frequency attenuator, so that the radio frequency downlink
The gain of link meets the second preset condition, and the pad value of second radio frequency attenuator adjusted is recorded as the second tune
Whole pad value；
Temperature-compensating rule generation module, for according to the first adjustment pad value, the second adjustment pad value and corresponding
Adjustment temperature value, obtain temperature-compensating rule.
10. a kind of active antenna, which is characterized in that the active antenna includes the first RF switch, the second RF switch, first
Radio frequency attenuator, the second radio frequency attenuator, low-noise amplifier, power amplifier, central processing unit, temperature sensor, antenna
Oscillator and antenna house；Wherein, the antenna end of second RF switch is connect with extraneous radio frequency (RF) coaxial connector, and described second
The receiving end of RF switch is connect with the input terminal of second radio frequency attenuator, the output end of second radio frequency attenuator with
The input terminal of the power amplifier connects, and the transmitting terminal of the output end of the power amplifier and first RF switch connects
It connects, the antenna end of first RF switch is connect with the antenna oscillator；The receiving end of first RF switch with it is described
The input terminal of low-noise amplifier connects, the input terminal of the output end of the low-noise amplifier and first radio frequency attenuator
Connection, the output end of first radio frequency attenuator are connect with the transmitting terminal of first RF switch；The central processing unit
Connect respectively with the control terminal of first radio frequency attenuator, the control terminal of second radio frequency attenuator, the temperature sensor
It connects.
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| CN201811293164.2A CN109347509B (en) | 2018-11-01 | 2018-11-01 | Gain compensation method and device of active antenna and active antenna |
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| CN201811293164.2A CN109347509B (en) | 2018-11-01 | 2018-11-01 | Gain compensation method and device of active antenna and active antenna |
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| CN109347509A true CN109347509A (en) | 2019-02-15 |
| CN109347509B CN109347509B (en) | 2020-04-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109981191A (en) * | 2019-03-18 | 2019-07-05 | 中国联合网络通信集团有限公司 | A kind of anechoic chamber, and mobile phone antenna performance test macro |
| CN114007259A (en) * | 2021-09-29 | 2022-02-01 | 安徽蓝麦通信股份有限公司 | Gain compensation method of active antenna |
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| US20090160601A1 (en) * | 2004-05-18 | 2009-06-25 | Yan Yuejun | Temperature compensation attenuator |
| CN102662163A (en) * | 2012-05-28 | 2012-09-12 | 中国电子科技集团公司第二十二研究所 | Digital control device based on microprocessor ARM (Advanced RISC Machines) and radar active calibrator |
| CN204180019U (en) * | 2014-10-29 | 2015-02-25 | 石家庄东泰尔通信技术有限公司 | Gain compensation means under a kind of microwave power amplifier high/low temperature |
| CN105224002A (en) * | 2014-06-30 | 2016-01-06 | 展讯通信（上海）有限公司 | Radio system temperature compensation, device and mobile terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090160601A1 (en) * | 2004-05-18 | 2009-06-25 | Yan Yuejun | Temperature compensation attenuator |
| CN102662163A (en) * | 2012-05-28 | 2012-09-12 | 中国电子科技集团公司第二十二研究所 | Digital control device based on microprocessor ARM (Advanced RISC Machines) and radar active calibrator |
| CN105224002A (en) * | 2014-06-30 | 2016-01-06 | 展讯通信（上海）有限公司 | Radio system temperature compensation, device and mobile terminal |
| CN204180019U (en) * | 2014-10-29 | 2015-02-25 | 石家庄东泰尔通信技术有限公司 | Gain compensation means under a kind of microwave power amplifier high/low temperature |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109981191A (en) * | 2019-03-18 | 2019-07-05 | 中国联合网络通信集团有限公司 | A kind of anechoic chamber, and mobile phone antenna performance test macro |
| CN109981191B (en) * | 2019-03-18 | 2021-08-31 | 中国联合网络通信集团有限公司 | Anechoic chamber and mobile phone antenna performance test system |
| CN114007259A (en) * | 2021-09-29 | 2022-02-01 | 安徽蓝麦通信股份有限公司 | Gain compensation method of active antenna |
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| Publication number | Publication date |
|---|---|
| CN109347509B (en) | 2020-04-14 |
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