CN106100599A - The gain compensating method of a kind of radio-frequency module and device - Google Patents
The gain compensating method of a kind of radio-frequency module and device Download PDFInfo
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- CN106100599A CN106100599A CN201610411231.0A CN201610411231A CN106100599A CN 106100599 A CN106100599 A CN 106100599A CN 201610411231 A CN201610411231 A CN 201610411231A CN 106100599 A CN106100599 A CN 106100599A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
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- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
The invention discloses gain compensating method and the device of a kind of radio-frequency module, the method includes: obtain the first performance number and the second performance number；According to the first power and described second power calculation current gain value, and calculate the difference of current gain value and initial yield value；When the absolute value of difference is more than or equal to D1, and difference be on the occasion of time control the attenuation of the first radio frequency attenuator and increase several D1, so that the absolute value of difference is less than D1；When the absolute value of described difference is more than or equal to D1, and difference is that the attenuation controlling the second radio frequency attenuator during negative value reduces several D1, so that the absolute value of difference is less than described D1；When the absolute value of difference is more than or equal to D2 and is less than D1, the attenuation controlling PIN diode is increased or decreased several D2, so that the absolute value of difference can ensure in the case of ensureing to have sufficiently large rf gain compensation range less than the described D2 present invention, improve the precision that rf gain compensates.
Description
Technical field
The present invention relates to radio frequency arts, particularly relate to gain compensating method and the device of a kind of radio-frequency module.
Background technology
Radio frequency (Radio Frequency:RF) refers exclusively to have certain wavelength and can be used for the electromagnetic wave of radio communication.It is used for
The high-frequency circuit producing radio frequency becomes radio circuit, is substantially made up of passive element, active device and passive network.With
The development of communication technology, frequency used by communication equipment improves day by day, and radio frequency (RF) and microwave (MW) circuit are in a communications system
Extensively application, radio circuit design field has obtained the special concern of industrial quarters.
At radio frequency, the active transmitting of microwave communication receive in system and LNA (LNA), PA (power amplifier) system, its gain
And output, primary radio characteristic, the index such as standing-wave ratio change along with the change of ambient temperature, especially in severe outdoor
Short-term or be in the active system of long-term fever duty after working under environment and starting shooting, its radiofrequency characteristics, index and steady
Qualitative receiving has a strong impact on, and can cause system cisco unity malfunction time serious.
Solve radio frequency, microwave telecommunication system radiofrequency characteristics stable problem than design radio frequency, the gain of microwave system and
Output wants complicated many, and generally, temperature is the highest, and the gain of system and output can become the least；Temperature is the lowest,
System gain and output can become big, i.e. system gain and output varies with temperature and change, and affects stablizing of system.
It is all to be compensated by radio frequency attenuator that existing rf gain compensates.Radio frequency attenuator is a kind of radio-frequency (RF) energy
Lossy RF Components, can realize the rf attenuation of 0.5dB 31.5dB by the control function controlling pin.Radio frequency increases
The precision that benefit compensates depends on the minimum step of radio frequency attenuator, and the radio frequency attenuator minimum step of current radio-frequency devices producer is
0.5dB, it is impossible to the most accurate.
Summary of the invention
The embodiment of the present invention proposes gain compensating method and the device of a kind of radio-frequency module, it is possible to ensureing there is foot in guarantee
In the case of enough big rf gain compensation ranges, improve the precision that rf gain compensates.
On the one hand the embodiment of the present invention provides the gain compensating method of a kind of radio-frequency module, including:
Obtain the first performance number and the second performance number；Described first performance number is the output letter of the prime module of radio-frequency module
Number performance number, described second performance number is the performance number of the output signal of described radio-frequency module；The output of described prime module
End and the input of described radio-frequency module are by being made up of the first radio frequency attenuator, the second radio frequency attenuator and PIN diode
Series circuit connects；
According to described first power and described second power calculation current gain value, and calculate described current gain value with just
The difference of beginning yield value；
When described difference absolute value more than or equal to D1 time, and described difference on the occasion of time control the first radio frequency attenuator
Attenuation increase several D1, so that the absolute value of described difference is less than described D1；
When the absolute value of described difference is more than or equal to D1, and described difference is to control the second radio frequency attenuator during negative value
Attenuation reduce several D1, so that the absolute value of described difference is less than described D1；
When described difference absolute value more than or equal to D2 and less than D1 time, control PIN diode attenuation increase or
Reduce several D2, so that the absolute value of described difference is less than described D2；
Wherein, D1 is described first radio frequency attenuator and the minimal attenuation precision of described second radio frequency attenuator, and D2 is institute
Stating the minimal attenuation precision of PIN diode, D2 is less than D1；The maximum attenuation amount of described PIN diode is more than or equal to D1.
As it is highly preferred that described gain compensating method also includes:
The initial decay amount 0 of described first radio frequency attenuator is set；
The maximum attenuation amount that initial decay amount is described second radio frequency attenuator of described second radio frequency attenuator is set.
As it is highly preferred that described gain compensating method also includes:
The initial decay amount arranging described PIN diode is D1；And the maximum attenuation amount of described PIN diode more than or etc.
D2 in twice.
As during it is highly preferred that the described absolute value when described difference is more than or equal to D2 and is less than D1, control PIN bis-pole
The attenuation of pipe is increased or decreased several D2, so that the absolute value of described difference is less than described D2, specifically includes:
When the absolute value of described difference is more than or equal to D2 and less than D1, and described difference be on the occasion of time, it is judged that described PIN
Whether the increasable attenuation of diode is more than the absolute value of described difference；
When the increasable attenuation of described PIN diode is more than or equal to the absolute value of described difference, by controlling
The attenuation of PIN diode increases several D2, so that the absolute value of described difference is less than described D2；
When the increasable attenuation of described PIN diode is less than the absolute value of described difference, by controlling described the
The attenuation of one radio frequency attenuator increases a D1 and reduces several D2 by the attenuation controlling PIN diode, so that
The absolute value of described difference is less than described D2；
When the absolute value of described difference is more than or equal to D2 and less than D1, and when described difference is negative value, it is judged that described PIN
Whether the attenuation reduced of diode is more than the absolute value of described difference；
When the attenuation reduced of described PIN diode is more than or equal to the absolute value of described difference, by controlling
The attenuation of PIN diode reduces several D2, so that the absolute value of described difference is less than described D2；
When the attenuation reduced of described PIN diode is less than the absolute value of described difference, by controlling described the
The attenuation of two radio frequency attenuators reduces a D1 and increases several D2 by the attenuation controlling PIN diode, so that
The absolute value of described difference is less than described D2.
As it is highly preferred that described acquisition the first performance number and the second performance number specifically include:
Described first performance number is obtained by being connected to the first power detector of the outfan of described prime module；
Described second performance number is obtained by being connected to the second power detector of the outfan of described radio-frequency module.
On the other hand, the embodiment of the present invention provides the gain compensation means of a kind of radio-frequency module, including:
Power acquisition module, for obtaining the first performance number and the second performance number；Described first performance number is radio-frequency module
The performance number of output signal of prime module, described second performance number is the performance number of the output signal of described radio-frequency module；
The outfan of described prime module and the input of described radio-frequency module are by by the first radio frequency attenuator, the second radio frequency attenuator
Connect with the series circuit of PIN diode composition；
Computing module, is used for according to described first power and described second power calculation current gain value, and calculates described
Current gain value and the difference of initial yield value；
First control module, for when described difference absolute value more than or equal to D1 time, and described difference be on the occasion of time
The attenuation controlling the first radio frequency attenuator increases several D1, so that the absolute value of described difference is less than described D1；
Second control module, is used for when the absolute value of described difference is more than or equal to D1, and when described difference is negative value
The attenuation controlling the second radio frequency attenuator reduces several D1, so that the absolute value of described difference is less than described D1；
3rd control module, for when the absolute value of described difference is more than or equal to D2 and is less than D1, controlling PIN bis-pole
The attenuation of pipe is increased or decreased several D2, so that the absolute value of described difference is less than described D2；
Wherein, D1 is described first radio frequency attenuator and the minimal attenuation precision of described second radio frequency attenuator, and D2 is institute
Stating the minimal attenuation precision of PIN diode, D2 is less than D1；The maximum attenuation amount of described PIN diode is more than or equal to D1.
As it is highly preferred that described gain compensation means also includes:
Module is set, for arranging the initial decay amount 0 of described first radio frequency attenuator and arranging described second radio frequency
The initial decay amount of attenuator is the maximum attenuation amount of described second radio frequency attenuator.
As it is highly preferred that described gain compensation means also includes:
Second arranges module, is D1 for arranging the initial decay amount of described PIN diode；And described PIN diode
Maximum attenuation amount is more than or equal to the D2 of twice.
As it is highly preferred that described 3rd control module specifically for:
First judging unit, for the absolute value when described difference more than or equal to D2 and less than D1, and described difference is
On the occasion of time, it is judged that whether the increasable attenuation of described PIN diode more than the absolute value of described difference；
First control unit, for the increasable attenuation when described PIN diode more than or equal to described difference
During absolute value, increase several D2 by the attenuation controlling PIN diode, so that the absolute value of described difference is less than described
D2；
Second control unit, for being less than the absolute value of described difference when the increasable attenuation of described PIN diode
Time, increase a D1 and by controlling the attenuation of PIN diode by the attenuation controlling described first radio frequency attenuator
Reduce several D2, so that the absolute value of described difference is less than described D2；
Second judging unit, for the absolute value when described difference more than or equal to D2 and less than D1, and described difference is
During negative value, it is judged that whether the attenuation reduced of described PIN diode is more than the absolute value of described difference；
3rd control unit, for the attenuation reduced when described PIN diode more than or equal to described difference
During absolute value, reduce several D2 by the attenuation controlling PIN diode, so that the absolute value of described difference is less than described
D2；
4th control unit, for being less than the absolute value of described difference when the attenuation reduced of described PIN diode
Time, reduce a D1 and by controlling the attenuation of PIN diode by the attenuation controlling described second radio frequency attenuator
Increase several D2, so that the absolute value of described difference is less than described D2.
As it is highly preferred that described power acquisition module specifically includes:
First acquiring unit, the first power detector for the outfan by being connected to described prime module obtains
Described first performance number；
Second acquisition unit, the second power detector for the outfan by being connected to described radio-frequency module obtains
Described second performance number.
Compared to prior art, the beneficial effects of the present invention is: the gain compensation of radio-frequency module provided by the present invention
Method, introduces two radio frequency attenuators and compensation way that PIN diode combines, and radio frequency attenuator attenuation range compares
Greatly, the radio frequency attenuator chip attenuation range that current manufacturer releases can reach 31.5dB, but attenuation accuracy is inadequate, small step
Entering can only be 0.5dB；Although PIN diode attenuation range is big not as radio frequency attenuator, but attenuation accuracy is by Control of Voltage,
Little attenuation accuracy can be less than 0.1dB.Invention introduces two radio frequency attenuators, the compensation range of radio system can be made to reach
To ± 32dB.By combining radio frequency attenuator and PIN diode, it is possible to obtain bigger supplementary scope, obtain higher simultaneously
Precision.Meanwhile, the present invention also provides for the gain compensation means of a kind of radio-frequency module performing said method.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the gain compensating method of the radio-frequency module that the embodiment of the present invention provides.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
See Fig. 1, be the schematic flow sheet of the gain compensating method of the radio-frequency module that the embodiment of the present invention provides, the method
Comprise the following steps:
S1, obtains the first performance number and the second performance number；Described first performance number is the defeated of the prime module of radio-frequency module
Going out the performance number of signal, described second performance number is the performance number of the output signal of described radio-frequency module；Described prime module
Outfan passes through by the first radio frequency attenuator, the second radio frequency attenuator and PIN diode group with the input of described radio-frequency module
The series circuit become connects；
S2, according to described first power and described second power calculation current gain value, and calculates described current gain value
Difference with initial yield value；
S3, when the absolute value of described difference is more than or equal to D1, and described difference on the occasion of time control the first radio frequency and decline
The attenuation subtracting device increases several D1, so that the absolute value of described difference is less than described D1；
S4, when the absolute value of described difference is more than or equal to D1, and described difference is to control the second radio frequency during negative value to decline
The attenuation subtracting device reduces several D1, so that the absolute value of described difference is less than described D1；
S5, when the absolute value of described difference is more than or equal to D2 and is less than D1, the attenuation controlling PIN diode increases
Or reduce several D2, so that the absolute value of described difference is less than described D2；
Wherein, D1 is described first radio frequency attenuator and the minimal attenuation precision of described second radio frequency attenuator, and D2 is institute
Stating the minimal attenuation precision of PIN diode, D2 is less than D1；The maximum attenuation amount of described PIN diode is more than or equal to D1.
Common diode is made up of PN junction.The intrinsic that a thin layer is low-doped is added between P and N semi-conducting material
(Intrinsic) semiconductor layer, the diode of this P-I-N structure of composition is exactly PIN diode.
Microwave switch at direct current is just utilizing PIN pipe, presents the impedance operator that approximation is turned on or off under reverse bias, it is achieved that
Control microwave signal channels transduction.The DC voltage current characteristic of PIN diode is the same with PN junction diode, but micro-
Ripple frequency range but has basic difference.Owing to the total electrical charge of PIN bis-pole I layer is mainly produced by bias current.Rather than by microwave electricity
Stream instantaneous value produces, so it only presents a linear resistance to microwave signal.This resistance is determined by direct current biasing, hinders during positively biased
Being worth little, close to short circuit, time reverse-biased, resistance is big, close to open circuit.Therefore PIN bis-does not extremely produce non-linear rectification to microwave signal
Effect, this is and the fundamental difference of general diode, so it is well suited for doing microwave controller.
PIN diode is therefore, it can to use as variable impedance element.It is often applied to HF switch (i.e. microwave
Switch), phase shift, modulation, in the circuit such as amplitude limit.The minimal attenuation precision of PIN diode can reach 0.1dB, i.e. D2
0.1dB。
In the present embodiment, the attenuation range that the first radio frequency attenuator and the second radio frequency brush are picked up is 0～31.5dB, both
Minimal attenuation precision D1 be 0.5dB.
As it is highly preferred that described gain compensating method also includes:
The initial decay amount 0 of described first radio frequency attenuator is set；
The maximum attenuation amount that initial decay amount is described second radio frequency attenuator of described second radio frequency attenuator is set.
As it is highly preferred that described gain compensating method also includes:
The initial decay amount arranging described PIN diode is D1；And the maximum attenuation amount of described PIN diode more than or etc.
D2 in twice.
As during it is highly preferred that the described absolute value when described difference is more than or equal to D2 and is less than D1, control PIN bis-pole
The attenuation of pipe is increased or decreased several D2, so that the absolute value of described difference is less than described D2, specifically includes:
When the absolute value of described difference is more than or equal to D2 and less than D1, and described difference be on the occasion of time, it is judged that described PIN
Whether the increasable attenuation of diode is more than the absolute value of described difference；
When the increasable attenuation of described PIN diode is more than or equal to the absolute value of described difference, by controlling
The attenuation of PIN diode increases several D2, so that the absolute value of described difference is less than described D2；
When the increasable attenuation of described PIN diode is less than the absolute value of described difference, by controlling described the
The attenuation of one radio frequency attenuator increases a D1 and reduces several D2 by the attenuation controlling PIN diode, so that
The absolute value of described difference is less than described D2；
When the absolute value of described difference is more than or equal to D2 and less than D1, and when described difference is negative value, it is judged that described PIN
Whether the attenuation reduced of diode is more than the absolute value of described difference；
When the attenuation reduced of described PIN diode is more than or equal to the absolute value of described difference, by controlling
The attenuation of PIN diode reduces several D2, so that the absolute value of described difference is less than described D2；
When the attenuation reduced of described PIN diode is less than the absolute value of described difference, by controlling described the
The attenuation of two radio frequency attenuators reduces a D1 and increases several D2 by the attenuation controlling PIN diode, so that
The absolute value of described difference is less than described D2.
The meaning of the more preferably mode of above-mentioned steps S5 is, when described PIN diode has reached maximum adjustable position (the most
Big value or minima) time, it is impossible to increase attenuation further or reduce attenuation, now can be by the first radio frequency attenuator
" borrow " with the second radio frequency attenuator, thus ensure to be made by regulation PIN diode the absolute value of final difference
Less than D2.
As it is highly preferred that described acquisition the first performance number and the second performance number specifically include:
Described first performance number is obtained by being connected to the first power detector of the outfan of described prime module；
Described second performance number is obtained by being connected to the second power detector of the outfan of described radio-frequency module.
On the other hand, the embodiment of the present invention provides the gain compensation means of a kind of radio-frequency module, including:
Power acquisition module, for obtaining the first performance number and the second performance number；Described first performance number is radio-frequency module
The performance number of output signal of prime module, described second performance number is the performance number of the output signal of described radio-frequency module；
The outfan of described prime module and the input of described radio-frequency module are by by the first radio frequency attenuator, the second radio frequency attenuator
Connect with the series circuit of PIN diode composition；
Computing module, is used for according to described first power and described second power calculation current gain value, and calculates described
Current gain value and the difference of initial yield value；
First control module, for when described difference absolute value more than or equal to D1 time, and described difference be on the occasion of time
The attenuation controlling the first radio frequency attenuator increases several D1, so that the absolute value of described difference is less than described D1；
Second control module, is used for when the absolute value of described difference is more than or equal to D1, and when described difference is negative value
The attenuation controlling the second radio frequency attenuator reduces several D1, so that the absolute value of described difference is less than described D1；
3rd control module, for when the absolute value of described difference is more than or equal to D2 and is less than D1, controlling PIN bis-pole
The attenuation of pipe is increased or decreased several D2, so that the absolute value of described difference is less than described D2；
Wherein, D1 is described first radio frequency attenuator and the minimal attenuation precision of described second radio frequency attenuator, and D2 is institute
Stating the minimal attenuation precision of PIN diode, D2 is less than D1；The maximum attenuation amount of described PIN diode is more than or equal to D1.
As it is highly preferred that described gain compensation means also includes:
Module is set, for arranging the initial decay amount 0 of described first radio frequency attenuator and arranging described second radio frequency
The initial decay amount of attenuator is the maximum attenuation amount of described second radio frequency attenuator.
As it is highly preferred that described gain compensation means also includes:
Second arranges module, is D1 for arranging the initial decay amount of described PIN diode；And described PIN diode
Maximum attenuation amount is more than or equal to the D2 of twice.
As it is highly preferred that described 3rd control module specifically for:
First judging unit, for the absolute value when described difference more than or equal to D2 and less than D1, and described difference is
On the occasion of time, it is judged that whether the increasable attenuation of described PIN diode more than the absolute value of described difference；
First control unit, for the increasable attenuation when described PIN diode more than or equal to described difference
During absolute value, increase several D2 by the attenuation controlling PIN diode, so that the absolute value of described difference is less than described
D2；
Second control unit, for being less than the absolute value of described difference when the increasable attenuation of described PIN diode
Time, increase a D1 and by controlling the attenuation of PIN diode by the attenuation controlling described first radio frequency attenuator
Reduce several D2, so that the absolute value of described difference is less than described D2；
Second judging unit, for the absolute value when described difference more than or equal to D2 and less than D1, and described difference is
During negative value, it is judged that whether the attenuation reduced of described PIN diode is more than the absolute value of described difference；
3rd control unit, for the attenuation reduced when described PIN diode more than or equal to described difference
During absolute value, reduce several D2 by the attenuation controlling PIN diode, so that the absolute value of described difference is less than described
D2；
4th control unit, for being less than the absolute value of described difference when the attenuation reduced of described PIN diode
Time, reduce a D1 and by controlling the attenuation of PIN diode by the attenuation controlling described second radio frequency attenuator
Increase several D2, so that the absolute value of described difference is less than described D2.
As it is highly preferred that described power acquisition module specifically includes:
First acquiring unit, the first power detector for the outfan by being connected to described prime module obtains
Described first performance number；
Second acquisition unit, the second power detector for the outfan by being connected to described radio-frequency module obtains
Described second performance number.
Compared to prior art, the beneficial effects of the present invention is: the gain compensation of radio-frequency module provided by the present invention
Method, introduces two radio frequency attenuators and compensation way that PIN diode combines, and radio frequency attenuator attenuation range compares
Greatly, the radio frequency attenuator chip attenuation range that current manufacturer releases can reach 31.5dB, but attenuation accuracy is inadequate, small step
Entering can only be 0.5dB；Although PIN diode attenuation range is big not as radio frequency attenuator, but attenuation accuracy is by Control of Voltage,
Little attenuation accuracy can be less than 0.1dB.Invention introduces two radio frequency attenuators, the compensation range of radio system can be made to reach
To ± 32dB.By combining radio frequency attenuator and PIN diode, it is possible to obtain bigger supplementary scope, obtain higher simultaneously
Precision.Meanwhile, the present invention also provides for the gain compensation means of a kind of radio-frequency module performing said method.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, be permissible
Instructing relevant hardware by computer program to complete, described program can be stored in a computer read/write memory medium
In, this program is upon execution, it may include such as the flow process of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic
Dish, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (RandomAccess
Memory, RAM) etc..
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (10)
1. the gain compensating method of a radio-frequency module, it is characterised in that including:
Obtain the first performance number and the second performance number；Described first performance number is the output signal of the prime module of radio-frequency module
Performance number, described second performance number is the performance number of the output signal of described radio-frequency module；The outfan of described prime module with
The input of described radio-frequency module is by the series connection being made up of the first radio frequency attenuator, the second radio frequency attenuator and PIN diode
Circuit connects；
According to described first power and described second power calculation current gain value, and calculate described current gain value and initial increasing
The difference of benefit value；
When described difference absolute value more than or equal to D1 time, and described difference be on the occasion of time control declining of the first radio frequency attenuator
Decrement increases several D1, so that the absolute value of described difference is less than described D1；
When the absolute value of described difference is more than or equal to D1, and described difference is to control declining of the second radio frequency attenuator during negative value
Decrement reduces several D1, so that the absolute value of described difference is less than described D1；
When the absolute value of described difference is more than or equal to D2 and is less than D1, the attenuation controlling PIN diode is increased or decreased
Several D2, so that the absolute value of described difference is less than described D2；
Wherein, D1 is described first radio frequency attenuator and the minimal attenuation precision of described second radio frequency attenuator, and D2 is described PIN
The minimal attenuation precision of diode, D2 is less than D1；The maximum attenuation amount of described PIN diode is more than or equal to D1.
2. the gain compensating method of radio-frequency module as claimed in claim 1, it is characterised in that described gain compensating method also wraps
Include:
The initial decay amount 0 of described first radio frequency attenuator is set；
The maximum attenuation amount that initial decay amount is described second radio frequency attenuator of described second radio frequency attenuator is set.
3. the gain compensating method of radio-frequency module as claimed in claim 1 or 2, it is characterised in that described gain compensating method
Also include:
The initial decay amount arranging described PIN diode is D1；And the maximum attenuation amount of described PIN diode is more than or equal to two
D2 again.
4. the gain compensating method of radio-frequency module as claimed in claim 3, it is characterised in that described absolute when described difference
When value is more than or equal to D2 and less than D1, the attenuation controlling PIN diode is increased or decreased several D2, so that described difference
Absolute value less than described D2, specifically include:
When the absolute value of described difference is more than or equal to D2 and less than D1, and described difference be on the occasion of time, it is judged that described PIN bis-pole
Whether the increasable attenuation of pipe is more than the absolute value of described difference；
When the increasable attenuation of described PIN diode is more than or equal to the absolute value of described difference, by controlling PIN bis-
The attenuation of pole pipe increases several D2, so that the absolute value of described difference is less than described D2；
When the increasable attenuation of described PIN diode is less than the absolute value of described difference, penetrate by controlling described first
Frequently the attenuation of attenuator increases a D1 and reduces several D2 by the attenuation controlling PIN diode, so that described
The absolute value of difference is less than described D2；
When the absolute value of described difference is more than or equal to D2 and less than D1, and when described difference is negative value, it is judged that described PIN bis-pole
Whether the attenuation reduced of pipe is more than the absolute value of described difference；
When the attenuation reduced of described PIN diode is more than or equal to the absolute value of described difference, by controlling PIN bis-
The attenuation of pole pipe reduces several D2, so that the absolute value of described difference is less than described D2；
When the attenuation reduced of described PIN diode is less than the absolute value of described difference, penetrate by controlling described second
Frequently the attenuation of attenuator reduces a D1 and increases several D2 by the attenuation controlling PIN diode, so that described
The absolute value of difference is less than described D2.
5. the gain compensating method of radio-frequency module as claimed in claim 1, it is characterised in that described acquisition the first performance number and
Second performance number specifically includes:
Described first performance number is obtained by being connected to the first power detector of the outfan of described prime module；
Described second performance number is obtained by being connected to the second power detector of the outfan of described radio-frequency module.
6. the gain compensation means of a radio-frequency module, it is characterised in that including:
Power acquisition module, for obtaining the first performance number and the second performance number；Before described first performance number is radio-frequency module
The performance number of the output signal of level module, described second performance number is the performance number of the output signal of described radio-frequency module；Described
The input of the outfan of prime module and described radio-frequency module by by the first radio frequency attenuator, the second radio frequency attenuator and
The series circuit of PIN diode composition connects；
Computing module, for according to described first power and described second power calculation current gain value, and calculate described currently
Yield value and the difference of initial yield value；
First control module, for when described difference absolute value more than or equal to D1 time, and described difference be on the occasion of time control
The attenuation of the first radio frequency attenuator increases several D1, so that the absolute value of described difference is less than described D1；
Second control module, is used for when the absolute value of described difference is more than or equal to D1, and controls when described difference is negative value
The attenuation of the second radio frequency attenuator reduces several D1, so that the absolute value of described difference is less than described D1；
3rd control module, for when the absolute value of described difference is more than or equal to D2 and is less than D1, controlling PIN diode
Attenuation is increased or decreased several D2, so that the absolute value of described difference is less than described D2；
Wherein, D1 is described first radio frequency attenuator and the minimal attenuation precision of described second radio frequency attenuator, and D2 is described PIN
The minimal attenuation precision of diode, D2 is less than D1；The maximum attenuation amount of described PIN diode is more than or equal to D1.
7. the gain compensation means of radio-frequency module as claimed in claim 6, it is characterised in that described gain compensation means is also wrapped
Include:
Module is set, for arranging the initial decay amount 0 of described first radio frequency attenuator and arranging described second rf attenuation
The initial decay amount of device is the maximum attenuation amount of described second radio frequency attenuator.
The gain compensation means of radio-frequency module the most as claimed in claims 6 or 7, it is characterised in that described gain compensation means
Also include:
Second arranges module, is D1 for arranging the initial decay amount of described PIN diode；And the maximum of described PIN diode
Attenuation is more than or equal to the D2 of twice.
9. the gain compensation means of radio-frequency module as claimed in claim 8, it is characterised in that described 3rd control module is concrete
For:
First judging unit, for the absolute value when described difference more than or equal to D2 and less than D1, and described difference be on the occasion of
Time, it is judged that whether the increasable attenuation of described PIN diode is more than the absolute value of described difference；
First control unit, is more than or equal to the absolute of described difference for the increasable attenuation when described PIN diode
During value, increase several D2 by the attenuation controlling PIN diode, so that the absolute value of described difference is less than described D2；
Second control unit, during for being less than the absolute value of described difference when the increasable attenuation of described PIN diode, logical
Control attenuation one D1 of increase of described first radio frequency attenuator if crossing and reduced by the attenuation controlling PIN diode
Dry D2, so that the absolute value of described difference is less than described D2；
Second judging unit, for the absolute value when described difference more than or equal to D2 and less than D1, and described difference is negative value
Time, it is judged that whether the attenuation reduced of described PIN diode is more than the absolute value of described difference；
3rd control unit, is more than or equal to the absolute of described difference for the attenuation reduced when described PIN diode
During value, reduce several D2 by the attenuation controlling PIN diode, so that the absolute value of described difference is less than described D2；
4th control unit, during for being less than the absolute value of described difference when the attenuation reduced of described PIN diode, logical
Control attenuation one D1 of reduction of described second radio frequency attenuator if crossing and increased by the attenuation controlling PIN diode
Dry D2, so that the absolute value of described difference is less than described D2.
10. the gain compensation means of radio-frequency module as claimed in claim 6, it is characterised in that described power acquisition module has
Body includes:
First acquiring unit, the first power detector for the outfan by being connected to described prime module obtains described
First performance number；
Second acquisition unit, the second power detector for the outfan by being connected to described radio-frequency module obtains described
Second performance number.
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|---|---|
| CN106100599B (en) | 2018-11-23 |
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