CN101442292B - Radio-frequency amplifier digital bias circuit, method and communication equipment - Google Patents
Radio-frequency amplifier digital bias circuit, method and communication equipment Download PDFInfo
- Publication number
- CN101442292B CN101442292B CN2007101776876A CN200710177687A CN101442292B CN 101442292 B CN101442292 B CN 101442292B CN 2007101776876 A CN2007101776876 A CN 2007101776876A CN 200710177687 A CN200710177687 A CN 200710177687A CN 101442292 B CN101442292 B CN 101442292B
- Authority
- CN
- China
- Prior art keywords
- frequency amplifier
- current sense
- radio frequency
- input
- sense resistor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The embodiment of the invention relates to a digital offsetting circuit of a radio frequency amplifier. The digital offsetting circuit comprises a plurality of radio frequency amplifiers, a plurality of current detection resistors, an analog-digital converter and a gating module; the input end of the gating module is connected with the first partial pressure end and the second partial pressure end of each current detection resistor; and the output end of the gating module is connected with the input end of the analog-digital converter in order that one of a plurality of the current detection resistors is selected and is in electric connection with the input end of the analog-digital converter. The embodiment of the invention also relates to a digital offsetting method for the radio frequency amplifier, which comprises the following steps: according to gating control information, the drain electrode of the radio frequency amplifier is selected in electric connection; static working current output by the drain electrode of the current radio frequency amplifier is received; and the current static working current is compared with preset reference value and is adjusted to be equal to the preset reference value. The embodiment of the invention reduces the number of the analog-digital converter needed in the offsetting circuit, simplifies the circuit, saves distribution space of PCB and reduces material cost.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of radio-frequency amplifier digital bias circuit, method and communication equipment.
Background technology
Main performance index such as the efficient of radio frequency amplifier, linearity, closely related with its static working current (drain current).When static working current changed, the efficient of radio frequency amplifier, linearity can change thereupon.For making radio frequency amplifier reach best performance index, when circuit design, need make its static working current be fixed on a specific value.And the adjustment of static working current realizes by adjusting grid voltage, so one of major function of radio-frequency amplifier digital bias circuit is to provide a stable grid voltage for radio frequency amplifier.But passing along with the operating time, at hot carrier's effect (HotCarier Injection, HCI) etc. under the influence of factor, though its gate bias voltage immobilizes, its static working current still can be drifted about, and therefore, the another one function of radio-frequency amplifier digital bias circuit is that grid voltage is adjusted function, influence with factors such as compensation hot carrier's effects makes its static working current maintain a steady state value.
Fig. 1 is the biasing circuit figure of a kind of radio frequency amplifier of prior art.As shown in Figure 1, this biasing circuit comprises radio frequency amplifier 1000, current sense resistor 2000 and the digital regulation resistance 5000 that is connected in series with the drain and gate of radio frequency amplifier 1000 respectively, wherein, current sense resistor 2000 is converted to voltage signal with the static working current of radio frequency amplifier 1000, this voltage signal sends to comparison circuit 4000 after amplifying circuit 3000 amplifies, and compare with the reference value of setting, on digital regulation resistance 5000 carries out digital current potential according to the output result of comparison circuit 4000, following two direction adjustment, thereby adjust the grid voltage of radio frequency amplifier 1000, to reach the purpose of adjusting radio frequency amplifier 1000 static working current.
The defective of this technical scheme is that biasing circuit is very complicated, and the components and parts of employing are too much, cause the biasing circuit combined reliability to reduce, and Material Cost sharply rises; Simultaneously, the intermediate link of this technical scheme adjustment radio frequency amplifier static working current is too much, causes control precision low.
For overcoming above-mentioned technological deficiency, prior art provides a kind of biasing circuit again.Fig. 2 is the biasing circuit figure of the another kind of radio frequency amplifier of prior art.As shown in Figure 2, this biasing circuit comprises radio frequency amplifier 1000, the drain electrode of radio frequency amplifier 1000 is connected in series with current sense resistor 2000, current sense resistor 2000 is converted to analog voltage signal with the static working current of radio frequency amplifier, this analog voltage signal sends to analog to digital converter 6000 after amplifying circuit 3000 amplifies, analog to digital converter 6000 sends to controller 7000 after converting this analog voltage signal to digital voltage signal, after handling, 7000 pairs of these digital voltage signals of controller send to digital to analog converter 8000, digital to analog converter 8000 converts the voltage signal that receives to the grid that sends to radio frequency amplifier 1000 after the analog signal, thereby the grid voltage of control radio frequency amplifier 1000 reaches the purpose of controlling radio frequency amplifier 1000 static working current.
This technical scheme adopts analog to digital converter 6000 and digital to analog converter 8000 to come Alternative digital potentiometer 5000, realize the full-digital control of biasing circuit, has the precision height, the advantage that can control in real time, but also there is tangible technological deficiency in this technical scheme, that is: each radio frequency amplifier 1000 all needs to comprise current sense resistor 2000, amplifying circuit 3000, analog to digital converter 6000, one cover components and parts such as digital to analog converter 8000 grades, when the number of radio frequency amplifier 1000 (only illustrates the situation of two radio frequency amplifiers) more for a long time among Fig. 2, improving constantly and the overloading implementation of scheme frequently particularly along with base station power, adopt this technical scheme, must cause the biasing circuit complexity, take the cloth board space of too much printed circuit board (PCB) (PCB), thereby cause Material Cost to rise.
Summary of the invention
First aspect of the present invention provides a kind of radio-frequency amplifier digital bias circuit, in order to solve existing a plurality of radio frequency amplifier biasing circuit complexity that comprise, the technological deficiency that Material Cost is high, thereby realization simplification circuit, the technique effect of reduction Material Cost.
Second aspect of the present invention provides a kind of radio-frequency amplifier digital biasing means, comprises the adjustment problem of a plurality of radio frequency amplifier biasing circuit static working current in order to solution, realizes that static working current keeps the technique effect of steady state value.
First aspect present invention provides a kind of radio-frequency amplifier digital bias circuit by some embodiment, comprising:
A plurality of radio frequency amplifiers;
A plurality of current sense resistors, the drain electrode of each described radio frequency amplifier is connected with a described current sense resistor;
An analog to digital converter;
A gating module, the input of described gating module is connected with second fen pressure side with first fen pressure side of each described current sense resistor respectively, the output of described gating module is connected with the input of described analog to digital converter, and the current sense resistor that is used to select to be connected with the radio frequency amplifier of needs adjustment static working current is electrically connected with the input of described analog to digital converter;
A control module, described control module is connected with the grid of each described radio frequency amplifier and the output of described analog to digital converter respectively, the digital voltage signal and the preset reference value that are used for more described analog to digital converter output, export the grid of adjusted analog voltage signal, with the static working current of the drain electrode output of adjusting corresponding radio frequency amplifier to corresponding radio frequency amplifier.
The example of first aspect present invention is by being provided with a gating module between a plurality of current sense resistors and analog to digital converter, when needs are adjusted the static working current of certain radio frequency amplifier output, only need the current sense resistor that the gating module is selected to be connected with certain radio frequency amplifier that need more adjust static working current is electrically connected, can realize only adopting an analog to digital converter, just can adjust the static working current of a plurality of radio frequency amplifier outputs, reduced the quantity of required analog to digital converter in the biasing circuit, simplify circuit, save the cloth board space of PCB, reduce Material Cost.
Second aspect present invention provides a kind of radio-frequency amplifier digital biasing means by some embodiment, may further comprise the steps:
Receive gating control information;
According to described gating control information, select to be electrically connected the drain electrode of a radio frequency amplifier;
Receive the static working current of the drain electrode output of current radio frequency amplifier;
Relatively whether current static working current equals the preset reference value, is the connection that then disconnects current radio frequency amplifier, receives next gating control information, carries out then according to described gating control information, selects the operation of the drain electrode of a radio frequency amplifier of electrical connection; Otherwise, export the difference of described static working current and preset reference value, adjust the grid voltage of current radio frequency amplifier according to described difference, receive the adjusted static working current of the drain electrode output of current radio frequency amplifier, carry out then and compare the operation whether current static working current equals the preset reference value.
The embodiment of second aspect present invention is according to gating control information, select to be electrically connected the drain electrode of the radio frequency amplifier that needs adjustment, by to the static working current of this radio frequency amplifier drain electrode output and the comparison of preset reference value, realize that a plurality of radio frequency amplifier static working current all can keep the technique effect of steady state value.
The embodiment of the invention also provides a kind of communication equipment that comprises above-mentioned radio-frequency amplifier digital bias circuit.
Description of drawings
Fig. 1 is the biasing circuit figure of a kind of radio frequency amplifier of prior art;
Fig. 2 is the biasing circuit figure of the another kind of radio frequency amplifier of prior art;
Fig. 3 implements circuit diagram for first of radio-frequency amplifier digital bias circuit of the present invention;
Fig. 4 implements circuit diagram for second of radio-frequency amplifier digital bias circuit of the present invention;
Fig. 5 implements circuit diagram for the 3rd of radio-frequency amplifier digital bias circuit of the present invention;
Fig. 6 implements circuit diagram for the 4th of radio-frequency amplifier digital bias circuit of the present invention;
Fig. 7 implements circuit diagram for the 5th of radio-frequency amplifier digital bias circuit of the present invention;
Fig. 8 implements circuit diagram for the 6th of radio-frequency amplifier digital bias circuit of the present invention;
Fig. 9 is the switch element schematic diagram of radio-frequency amplifier digital bias circuit of the present invention;
Figure 10 is a kind of amplifying unit schematic diagram of radio-frequency amplifier digital bias circuit of the present invention;
Figure 11 is the another kind of amplifying unit schematic diagram of radio-frequency amplifier digital bias circuit of the present invention;
Figure 12 is the first implementing procedure figure of radio-frequency amplifier digital biasing means of the present invention;
Figure 13 is the second implementing procedure figure of radio-frequency amplifier digital biasing means of the present invention.
Description of reference numerals:
The 1-radio frequency amplifier; The 2-current sense resistor; 3-gating module;
The 30-first gating module; 31-first switch element; 32-second switch unit;
34-the 3rd switch element; 35-the 4th switch element; 36-the 5th switch element;
37-the 6th switch element; The 33-amplifying unit; The 4-analog to digital converter;
The 5-control module; The 51-comparing unit; The 52-control unit;
The 53-adjustment unit; The 331-operational amplifier;
The 332-magnification ratio is adjusted resistance.
Embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Fig. 3 implements circuit diagram for first of radio-frequency amplifier digital bias circuit of the present invention.As shown in Figure 3, present embodiment comprises:
A plurality of radio frequency amplifiers 1;
A plurality of current sense resistors 2, the drain electrode of each radio frequency amplifier 1 is connected with a current sense resistor 2, and each current sense resistor 2 is used for converting the static working current of the drain electrode output of each radio frequency amplifier 1 to quiescent operation voltage; Each current sense resistor 2 comprises two voltage branch pressure sides, and for ease of explanation, the end that present embodiment defines the drain electrode of each current sense resistor 2 close radio frequency amplifier 1 is first fen pressure side, and the other end then is second fen pressure side; The number of current sense resistor 2 equals the number of radio frequency amplifier 1;
A gating module 3 and an analog to digital converter 4, wherein, the input of gating module 3 is connected with second fen pressure side with first fen pressure side of each described current sense resistor 2 respectively, is used for selecting first fen pressure side and second fen pressure side of a current sense resistor 2 of a plurality of current sense resistors 2 to be electrically connected with the input of analog to digital converter 4; This analog to digital converter 4 is used for converting the analog voltage signal of gating module 3 outputs to digital voltage signal;
A control module 5, this control module 5 is connected with the grid of each radio frequency amplifier 1 and the output of analog to digital converter 4 respectively, the digital voltage signal and the preset reference value that are used for 4 outputs of comparison analog to digital converter, export the grid of adjusted analog voltage signal, adjust the static working current of the drain electrode output of radio frequency amplifier 1 by adjusting grid voltage to corresponding radio frequency amplifier 1.
Present embodiment is by being provided with a gating module between a plurality of current sense resistors and analog to digital converter, when needs are adjusted the static working current of certain radio frequency amplifier output, only need the current sense resistor that the gating module is selected to be connected with certain radio frequency amplifier that needs the adjustment static working current is electrically connected, can realize only adopting an analog to digital converter, just can adjust the static working current of a plurality of radio frequency amplifier outputs, reduced the quantity of required analog to digital converter in the biasing circuit, simplify circuit, save the cloth board space of PCB, reduce Material Cost.
Fig. 4 implements circuit diagram for second of radio-frequency amplifier digital bias circuit of the present invention.As shown in Figure 4, the difference of present embodiment and the foregoing description is:
Comparing unit 51 is connected with analog to digital converter 4, is used for the current digital voltage value of comparison analog to digital converter 4 outputs and the size of preset reference value, the output comparative result;
Control unit 52 is connected with gating module 3 with comparing unit 51, be used for according to comparative result output keep gating or the control information of the gating that continues to gating module 3;
Adjustment unit 53, be connected with the grid of comparing unit 51 with each radio frequency amplifier 1, be used for adjusting according to comparative result the grid voltage of current radio frequency amplifier 1: when the comparative result of comparing unit 51 output is the digital voltage value of analog to digital converter 4 outputs when being not equal to the preset reference value, adjustment unit 53 is adjusted the grid voltage of current radio frequency amplifier 1 according to the difference of the digital voltage value of analog to digital converter 4 outputs and preset reference value.
The gating module is specially the first gating module 30, and this first gating module 30 is connected with control module 5, and the input of this first gating module 30 is connected with second fen pressure side with first fen pressure side of each described current sense resistor 2 respectively.
The first gating module 30 is used for selecting first fen pressure side and second fen pressure side of a current sense resistor 2 of a plurality of current sense resistors 2 to be electrically connected with the input of analog to digital converter 4; And when receiving the control information of keeping gating, keep being electrically connected of input of current sense resistor 2 that current radio frequency amplifier 1 connects and analog to digital converter 4; When receiving the control information of the gating that continues, the current sense resistor 2 of selecting next radio frequency amplifier 1 to connect is electrically connected with analog to digital converter 4.
Present embodiment is operated the concrete gating of the first gating module by the control information of control module output and is controlled, when the static working current that detects current radio frequency amplifier output when the comparing unit of control module is not equal to the preset reference value, control unit output is kept the control information of gating to the first gating module, after making that adjustment unit is adjusted the grid operating voltage of current radio frequency amplifier, can continue to detect the static working current of current radio frequency amplifier output; When the static working current that detects the output of current radio frequency amplifier up to comparing unit equals the preset reference value, control unit is exported the control information of the gating that continues to the first gating module, the current sense resistor that the first gating module selects next radio frequency amplifier to connect is electrically connected with analog to digital converter, thereby improved the efficient and the precision of gating module controls, the static working current that helps more effective maintenance radio frequency amplifier output keeps steady state value.
Fig. 5 implements circuit diagram for the 3rd of radio-frequency amplifier digital bias circuit of the present invention.As shown in Figure 5, the difference of present embodiment and the foregoing description is that gating module 3 specifically comprises:
An amplifying unit 33, the first input end of this amplifying unit 33 is connected with second switch unit 32 with first switch element 31 respectively with second input;
One first switch element 31, this first switch element 31 is connected with first fen pressure side of each current sense resistor 2, is used for selecting first fen pressure side of a current sense resistor 2 of a plurality of current sense resistors 2 to be connected with the first input end of amplifying unit 33;
A second switch unit 32, this second switch unit 32 is connected with second fen pressure side of each current sense resistor 2, is used to select second fen pressure side of the current sense resistor 2 that is connected with first switch element 31 to be connected with second input of amplifying unit 33;
Present embodiment is by being provided with first switch element between a plurality of current sense resistors and analog to digital converter, second switch unit and an amplifying unit, when needs are adjusted the static working current of certain radio frequency amplifier output, only need the first fen pressure side and the pressure side electrical connection in second fen of current sense resistor that first switch element and second switch unit are connected with certain radio frequency amplifier that needs to adjust static working current, only need an analog to digital converter, amplifying unit, can adjust the static working current of a plurality of radio frequency amplifier outputs, the analog to digital converter required in the biasing circuit and the quantity of amplifying unit have been reduced, simplify circuit, save the cloth board space of PCB, reduce Material Cost.
Fig. 6 implements circuit diagram for the 4th of radio-frequency amplifier digital bias circuit of the present invention.As shown in Figure 6, the difference of present embodiment and radio frequency amplifier biasing circuit second of the present invention and the 3rd embodiment is:
In the present embodiment, gating module 3 specifically comprises:
An amplifying unit 33, the first input end of this amplifying unit 33 is connected with one the 5th switch element 36 with one the 4th switch element 35 respectively with second input, and the output of this amplifying unit 33 is connected with the input of analog to digital converter 4;
The 4th switch element 35 is connected with first fen pressure side of control unit 52 and each described current sense resistor 2, be used for selecting first fen pressure side of a current sense resistor 2 of a plurality of current sense resistors 2 to be connected with the first input end of amplifying unit 33, and when receiving the control information of keeping gating, first fen pressure side keeping current sense resistor 2 that current radio frequency amplifier 1 connects is electrically connected with the first input end of amplifying unit 33; When receiving the control information of the gating that continues, select first fen pressure side of the current sense resistor 2 of next radio frequency amplifier 1 connection to be electrically connected with the first input end of amplifying unit 33;
The 5th switch element 36 is connected with second fen pressure side of control unit 52 and each described current sense resistor 2, be used for selecting second fen pressure side of a current sense resistor 2 of a plurality of current sense resistors 2 to be connected with second input of amplifying unit 33, and when receiving the control information of keeping gating, second fen pressure side keeping current sense resistor 2 that current radio frequency amplifier 1 connects is electrically connected with second input of amplifying unit 33; When receiving the control information of the gating that continues, select second fen pressure side of the current sense resistor 2 of next radio frequency amplifier 1 connection to be electrically connected with second input of amplifying unit 33.
Present embodiment is controlled the concrete gating operation of the 4th switch element and the 5th switch element by the control information of the control unit of control module output, when the static working current that detects the output of current radio frequency amplifier when comparing unit is not equal to the preset reference value, control information to the four switch elements and the 5th switch element of gating kept in control unit output, after making that adjustment unit is adjusted the grid operating voltage of current radio frequency amplifier, can continue to detect the static working current of current radio frequency amplifier output; When the static working current that detects the output of current radio frequency amplifier up to comparing unit equals the preset reference value, processing module is exported the control information of the gating that continues, first fen pressure side and second fen pressure side gating of the current sense resistor that the 4th switch element and the 5th switch element are connected with next radio frequency amplifier respectively, thereby improved the efficient and the precision of the control of the 4th switch element and the 5th switch element gating, the static working current that helps more effective maintenance radio frequency amplifier output keeps steady state value.
Fig. 7 implements circuit diagram for the 5th of radio-frequency amplifier digital bias circuit of the present invention.As shown in Figure 7, the difference of present embodiment and the foregoing description is that gating module 3 comprises:
A plurality of amplifying units 33, the first input end of each amplifying unit 33 is connected with second fen pressure side with first fen pressure side of a current sense resistor 2 respectively with second input, and the number of amplifying unit 33 all equates with the number of radio frequency amplifier 1 and the number of current sense resistor 2;
The input of one the 3rd switch element 34, the three switch elements 34 is connected with the output of each amplifying unit 33 respectively, is used for selecting an amplifying unit 33 of a plurality of amplifying units 33 to be electrically connected with the input of digital to analog converter 4.
Present embodiment is by the amplifying unit of setting between a plurality of current sense resistors and analog to digital converter with the radio frequency amplifier equal number, when needs are adjusted the static working current of certain radio frequency amplifier output, only need with the 3rd switch element with adjust the amplifying unit electrical connection that current sense resistor that certain radio frequency amplifier of static working current is connected connects with needs and get final product, present embodiment only needs an analog to digital converter, thereby reduced the quantity of required analog to digital converter in the biasing circuit, simplify circuit, save the cloth board space of PCB, reduce Material Cost.
Fig. 8 implements circuit diagram for the 6th of radio-frequency amplifier digital bias circuit of the present invention.As shown in Figure 8, the difference of present embodiment and radio frequency amplifier biasing circuit second of the present invention and the 5th embodiment is:
In the present embodiment, gating module 3 specifically comprises:
A plurality of amplifying units 33, the first input end of each amplifying unit 33 is connected with second fen pressure side with first fen pressure side of a current sense resistor 2 respectively with second input;
The input of one the 6th switch element 37, the six switch elements 37 is connected with the output of control unit 52 and each amplifying unit 33, and the output of the 6th switch element 37 is connected with the input of analog to digital converter 4; The 6th switch element 37 is used for selecting an amplifying unit 33 of a plurality of amplifying units 33 to be electrically connected with analog to digital converter 4; And when receiving the control information of keeping gating, keep being electrically connected of input of amplifying unit 33 that current sense resistor 2 that current radio frequency amplifier 1 connects connects and analog to digital converter 4; When receiving the control information of the gating that continues, the amplifying unit 33 that the current sense resistor 2 of selecting next radio frequency amplifier 1 to connect connects is electrically connected with analog to digital converter 4.
Present embodiment is controlled the concrete gating operation of the 6th switch element by the control information of control module output, when the static working current that detects current radio frequency amplifier output when the comparing unit of control module is not equal to the preset reference value, control information to the six switch elements of gating are kept in control unit output, after making that adjustment unit is adjusted the grid operating voltage of current radio frequency amplifier, can continue to detect the static working current of current radio frequency amplifier output; When the static working current that detects the output of current radio frequency amplifier up to comparing unit equals the preset reference value, control unit is exported the control information of the gating that continues, the output of the amplifying unit that the current sense resistor that gating unit selects the 6th switch element to be connected with next radio frequency amplifier connects is electrically connected, thereby improved the efficient and the precision of the control of the 6th switch element gating, the static working current that helps more effective maintenance radio frequency amplifier output keeps steady state value.
In radio-frequency amplifier digital bias circuit embodiment of the present invention, can select switchtype according to actual needs as switch element.Fig. 9 is the switch element schematic diagram of radio-frequency amplifier digital bias circuit of the present invention.As shown in Figure 9, each switch element such as first switch element, second switch unit and the 3rd switch element all can be specially the CD4067 analog switch.In addition, these switch elements also all can be specially radio-frequency (RF) switch or other switches according to actual needs.
In radio-frequency amplifier digital bias circuit embodiment of the present invention, can design or select to form the element of amplifying unit according to actual needs.Figure 10 is a kind of amplifying unit schematic diagram of radio-frequency amplifier digital bias circuit of the present invention.As shown in figure 10, amplifying unit can be by operational amplifier 331, and the magnification ratio that is connected with operational amplifier 331 is adjusted resistance 332 and formed.Figure 11 is the another kind of amplifying unit schematic diagram of radio-frequency amplifier digital bias circuit of the present invention.As shown in figure 11, amplifying unit can directly use the MAX4080 chip, the annexation of its chip pin for example, the output of first switch element and second switch unit is connected with the RS-end with the RS+ of MAX4080 chip respectively, analog to digital converter is held with the OUT of MAX4080 chip and is connected; Perhaps, first fen pressure side of current sense resistor is connected with the RS-end with the RS+ of MAX4080 chip respectively with second fen pressure side, and the 3rd switch element and the OUT of MAX4080 chip hold and be connected etc.
The bright method that a kind of radio-frequency amplifier digital biasing also is provided on the other hand of we.Figure 12 is the first implementing procedure figure of radio-frequency amplifier digital biasing means of the present invention.As shown in figure 12, present embodiment comprises:
The static working current of the drain electrode output of step 300, the current radio frequency amplifier of reception;
The difference of step 500, output described static working current and preset reference value is adjusted the grid voltage of current radio frequency amplifier, execution in step 300 according to described difference;
The connection of step 600, the current radio frequency amplifier of disconnection receives next gating control information, execution in step 200.
Present embodiment is according to gating control information, select to be electrically connected the drain electrode of the radio frequency amplifier that needs adjustment, by to the static working current of this radio frequency amplifier drain electrode output and the comparison of preset reference value, realize that a plurality of radio frequency amplifier static working current all can keep the technique effect of steady state value.
Figure 13 is the second implementing procedure figure of radio-frequency amplifier digital biasing means of the present invention.As shown in figure 13, present embodiment comprises:
The static working current of step 201, i radio frequency amplifier of reception;
The difference of step 401, calculating current static working current and preset reference value;
Present embodiment is according to the drain electrode of the radio frequency amplifier of selecting the electrical connection needs to adjust, by this radio frequency amplifier the is drained static working current of output and the comparison of preset reference value, realize one by one to the detection and the adjustment of radio frequency amplifier static working current, make the static working current of each radio frequency amplifier output all can keep steady state value.
Each radio-frequency amplifier digital bias circuit all can be built in the various communication equipments of wireless base station communication equipment or multicarrier in the embodiment of the invention, as: four density base stations power board or the like.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that previous embodiment is put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of embodiment of the invention technical scheme.
Claims (17)
1. a radio-frequency amplifier digital bias circuit is characterized in that, comprising:
A plurality of radio frequency amplifiers;
A plurality of current sense resistors, the drain electrode of each described radio frequency amplifier is connected with a described current sense resistor;
An analog to digital converter;
A gating module, the input of described gating module is connected with second fen pressure side with first fen pressure side of each described current sense resistor respectively, the output of described gating module is connected with the input of described analog to digital converter, and the current sense resistor that is used to select to be connected with the radio frequency amplifier of needs adjustment static working current is electrically connected with the input of described analog to digital converter;
A control module, described control module is connected with the grid of each described radio frequency amplifier and the output of described analog to digital converter respectively, the digital voltage signal and the preset reference value that are used for more described analog to digital converter output, export the grid of adjusted analog voltage signal, with the static working current of the drain electrode output of adjusting corresponding radio frequency amplifier to corresponding radio frequency amplifier.
2. radio-frequency amplifier digital bias circuit according to claim 1 is characterized in that, described gating module comprises:
An amplifying unit, the first input end of described amplifying unit is connected with one first switch element, and second input of described amplifying unit is connected with a second switch unit, and the output of described amplifying unit is connected with the input of described analog to digital converter;
Described first switch element is connected with first fen pressure side of each described current sense resistor, is used for selecting first fen pressure side of a current sense resistor of a plurality of current sense resistors to be connected with the first input end of amplifying unit;
Described second switch unit is connected with second fen pressure side of each described current sense resistor, is used for selecting second fen pressure side of a current sense resistor of a plurality of current sense resistors to be connected with second input of described amplifying unit.
3. radio-frequency amplifier digital bias circuit according to claim 1 is characterized in that, described gating module comprises:
A plurality of amplifying units, the first input end of each described amplifying unit is connected with first fen pressure side of a described current sense resistor, and second input of each described amplifying unit is connected with second fen pressure side of a described current sense resistor;
One the 3rd switch element, the input of described the 3rd switch element is connected with the output of each described amplifying unit respectively, and the output of described the 3rd switch element is connected with the input of described analog to digital converter.
4. radio-frequency amplifier digital bias circuit according to claim 1 is characterized in that, described control module comprises:
Comparing unit is connected with described analog to digital converter, is used for the current digital voltage value of more described analog to digital converter output and the size of preset reference value, the output comparative result;
Control unit is connected with the gating module with described comparing unit, be used for according to comparative result output keep gating or the control information of the gating that continues to described gating module;
Adjustment unit is connected with the grid of described comparing unit and each described radio frequency amplifier, is used for adjusting according to comparative result the grid voltage of current radio frequency amplifier.
5. radio-frequency amplifier digital bias circuit according to claim 4, it is characterized in that, described gating module is the first gating module, the input of the described first gating module is connected with second fen pressure side with first fen pressure side of described control unit and each described current sense resistor respectively, and the output of the described first gating module is connected with the input of described analog to digital converter;
The described first gating module is used for selecting a current sense resistor of a plurality of current sense resistors to be electrically connected with the input of described analog to digital converter; And when receiving the control information of keeping gating, keep being electrically connected of input of current sense resistor that current radio frequency amplifier connects and analog to digital converter; When receiving the control information of the gating that continues, the current sense resistor of selecting next radio frequency amplifier to connect is electrically connected with described analog to digital converter.
6. radio-frequency amplifier digital bias circuit according to claim 4 is characterized in that, described gating module comprises:
An amplifying unit, the first input end of described amplifying unit is connected with one the 4th switch element, and second input of described amplifying unit is connected with one the 5th switch element, and the output of described amplifying unit is connected with the input of described analog to digital converter;
Described the 4th switch element is connected with first fen pressure side of described control unit and each described current sense resistor, be used for selecting first fen pressure side of a current sense resistor of a plurality of current sense resistors to be connected with the first input end of described amplifying unit, and when receiving the control information of keeping gating, first fen pressure side keeping current sense resistor that current radio frequency amplifier connects is electrically connected with the first input end of described amplifying unit; When receiving the control information of the gating that continues, select first fen pressure side of the current sense resistor of next radio frequency amplifier connection to be electrically connected with the first input end of described amplifying unit;
Described the 5th switch element is connected with second fen pressure side of described control unit and each described current sense resistor, be used for selecting second fen pressure side of a current sense resistor of a plurality of current sense resistors to be connected with second input of described amplifying unit, and when receiving the control information of keeping gating, second fen pressure side keeping current sense resistor that current radio frequency amplifier connects is electrically connected with second input of described amplifying unit; When receiving the control information of the gating that continues, select second fen pressure side of the current sense resistor of next radio frequency amplifier connection to be electrically connected with second input of described amplifying unit.
7. radio-frequency amplifier digital bias circuit according to claim 4 is characterized in that, described gating module comprises:
A plurality of amplifying units, the first input end of each described amplifying unit is connected with first fen pressure side of a described current sense resistor, and second input of each described amplifying unit is connected with second fen pressure side of a described current sense resistor;
One the 6th switch element, the input of described the 6th switch element is connected with the output of described control unit and each amplifying unit, and the output of described the 6th switch element is connected with the input of described analog to digital converter; Described the 6th switch element is used for selecting an amplifying unit of a plurality of described amplifying units to be electrically connected with described analog to digital converter; And when receiving the control information of keeping gating, keep being electrically connected of input of amplifying unit that current sense resistor that current radio frequency amplifier connects connects and described analog to digital converter; When receiving the control information of the gating that continues, the amplifying unit that the current sense resistor of selecting next radio frequency amplifier to connect connects is electrically connected with described analog to digital converter.
8. according to claim 2 or 3 or 6 or 7 described radio-frequency amplifier digital bias circuits, it is characterized in that each corresponding described switch element is analog switch or radio-frequency (RF) switch.
9. according to claim 2 or 3 or 6 or 7 described radio-frequency amplifier digital bias circuits, it is characterized in that described amplifying unit comprises operational amplifier, and the magnification ratio that is connected with described operational amplifier is adjusted resistance.
10. a radio-frequency amplifier digital biasing means is characterized in that, may further comprise the steps:
Receive gating control information;
According to described gating control information, select to be electrically connected the drain electrode of a radio frequency amplifier;
Receive the static working current of the drain electrode output of current radio frequency amplifier;
Relatively whether current static working current equals the preset reference value, is the connection that then disconnects current radio frequency amplifier, receives next gating control information, carries out then according to described gating control information, selects the operation of the drain electrode of a radio frequency amplifier of electrical connection; Otherwise, export the difference of described static working current and preset reference value, adjust the grid voltage of current radio frequency amplifier according to described difference, receive the adjusted static working current of the drain electrode output of current radio frequency amplifier, carry out then and compare the operation whether current static working current equals the preset reference value.
11. a communication equipment that comprises radio-frequency amplifier digital bias circuit is characterized in that, described radio-frequency amplifier digital bias circuit comprises:
A plurality of radio frequency amplifiers;
A plurality of current sense resistors, the drain electrode of each described radio frequency amplifier is connected with a described current sense resistor;
An analog to digital converter;
A gating module, the input of described gating module is connected with second fen pressure side with first fen pressure side of each described current sense resistor respectively, the output of described gating module is connected with the input of described analog to digital converter, and the current sense resistor that is used to select to be connected with the radio frequency amplifier of needs adjustment static working current is electrically connected with the input of described analog to digital converter;
A control module, described control module is connected with the grid of each described radio frequency amplifier and the output of described analog to digital converter respectively, the digital voltage signal and the preset reference value that are used for more described analog to digital converter output, export the grid of adjusted analog voltage signal, with the static working current of the drain electrode output of adjusting corresponding radio frequency amplifier to corresponding radio frequency amplifier.
12. communication equipment according to claim 11 is characterized in that, described gating module comprises:
An amplifying unit, the first input end of described amplifying unit is connected with one first switch element, and second input of described amplifying unit is connected with a second switch unit, and the output of described amplifying unit is connected with the input of described analog to digital converter;
Described first switch element is connected with first fen pressure side of each described current sense resistor, is used for selecting first fen pressure side of a current sense resistor of a plurality of current sense resistors to be connected with the first input end of amplifying unit;
Described second switch unit is connected with second fen pressure side of each described current sense resistor, is used for selecting second fen pressure side of a current sense resistor of a plurality of current sense resistors to be connected with second input of described amplifying unit.
13. communication equipment according to claim 11 is characterized in that, described gating module comprises:
A plurality of amplifying units, the first input end of each described amplifying unit is connected with first fen pressure side of a described current sense resistor, and second input of each described amplifying unit is connected with second fen pressure side of a described current sense resistor;
One the 3rd switch element, the input of described the 3rd switch element is connected with the output of each described amplifying unit respectively, and the output of described the 3rd switch element is connected with the input of described analog to digital converter.
14. communication equipment according to claim 11 is characterized in that, described control module comprises:
Comparing unit is connected with described analog to digital converter, is used for the current digital voltage value of more described analog to digital converter output and the size of preset reference value, the output comparative result;
Control unit is connected with the gating module with described comparing unit, be used for according to comparative result output keep gating or the control information of the gating that continues to the gating module;
Adjustment unit is connected with the grid of described comparing unit and each described radio frequency amplifier, is used for adjusting according to comparative result the grid voltage of current radio frequency amplifier.
15. communication equipment according to claim 14, it is characterized in that, described gating module is the first gating module, the input of the described first gating module is connected with second fen pressure side with first fen pressure side of described control unit and each described current sense resistor respectively, and the output of the described first gating module is connected with the input of described analog to digital converter;
The described first gating module is used for selecting a current sense resistor of a plurality of current sense resistors to be electrically connected with the input of described analog to digital converter; And when receiving the control information of keeping gating, keep being electrically connected of input of current sense resistor that current radio frequency amplifier connects and analog to digital converter; When receiving the control information of the gating that continues, the current sense resistor of selecting next radio frequency amplifier to connect is electrically connected with analog to digital converter.
16. communication equipment according to claim 14 is characterized in that, described gating module comprises:
An amplifying unit, the first input end of described amplifying unit is connected with one the 4th switch element, and second input of described amplifying unit is connected with one the 5th switch element, and the output of described amplifying unit is connected with the input of described analog to digital converter;
Described the 4th switch element is connected with first fen pressure side of described control unit and each described current sense resistor, be used for selecting first fen pressure side of a current sense resistor of a plurality of current sense resistors to be connected with the first input end of described amplifying unit, and when receiving the control information of keeping gating, first fen pressure side keeping current sense resistor that current radio frequency amplifier connects is electrically connected with the first input end of described amplifying unit; When receiving the control information of the gating that continues, select first fen pressure side of the current sense resistor of next radio frequency amplifier connection to be electrically connected with the first input end of described amplifying unit;
Described the 5th switch element is connected with second fen pressure side of described control unit and each described current sense resistor, be used for selecting second fen pressure side of a current sense resistor of a plurality of current sense resistors to be connected with second input of described amplifying unit, and when receiving the control information of keeping gating, second fen pressure side keeping current sense resistor that current radio frequency amplifier connects is electrically connected with second input of described amplifying unit; When receiving the control information of the gating that continues, select second fen pressure side of the current sense resistor of next radio frequency amplifier connection to be electrically connected with second input of described amplifying unit.
17. communication equipment according to claim 14 is characterized in that, described gating module comprises:
A plurality of amplifying units, the first input end of each described amplifying unit is connected with first fen pressure side of a described current sense resistor, and second input of each described amplifying unit is connected with second fen pressure side of a described current sense resistor;
One the 6th switch element, the input of described the 6th switch element is connected with the output of described control unit and each amplifying unit, and the output of described the 6th switch element is connected with the input of described analog to digital converter; Described the 6th switch element is used for selecting an amplifying unit of a plurality of described amplifying units to be electrically connected with described analog to digital converter; And when receiving the control information of keeping gating, keep being electrically connected of input of amplifying unit that current sense resistor that current radio frequency amplifier connects connects and described analog to digital converter; When receiving the control information of the gating that continues, the amplifying unit that the current sense resistor of selecting next radio frequency amplifier to connect connects is electrically connected with described analog to digital converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101776876A CN101442292B (en) | 2007-11-19 | 2007-11-19 | Radio-frequency amplifier digital bias circuit, method and communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101776876A CN101442292B (en) | 2007-11-19 | 2007-11-19 | Radio-frequency amplifier digital bias circuit, method and communication equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101442292A CN101442292A (en) | 2009-05-27 |
| CN101442292B true CN101442292B (en) | 2011-04-13 |
Family
ID=40726580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101776876A Expired - Fee Related CN101442292B (en) | 2007-11-19 | 2007-11-19 | Radio-frequency amplifier digital bias circuit, method and communication equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101442292B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106603023B (en) * | 2016-12-15 | 2020-01-21 | 中国电子科技集团公司第四十一研究所 | Dual-power amplifier circuit |
| CN112118368B (en) * | 2019-06-04 | 2021-08-24 | 宁波飞芯电子科技有限公司 | Grid voltage regulating circuit, grid voltage regulating method and sensor using grid voltage regulating circuit and grid voltage regulating method |
| CN110661501B (en) * | 2019-08-29 | 2021-09-24 | 电子科技大学 | Automatic locking circuit for setting quiescent point of power amplifier |
| CN112018863B (en) * | 2020-08-31 | 2023-02-14 | 广州极飞科技股份有限公司 | Power supply adjusting circuit and power supply device |
| CN114094949A (en) * | 2021-11-12 | 2022-02-25 | 中国电子科技集团公司第二十九研究所 | Universal amplifier initialization circuit, device and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1081794A (en) * | 1992-07-02 | 1994-02-09 | 莫托罗拉公司 | The method and apparatus of radio frequency amplifier biasing control |
| EP0643479A1 (en) * | 1993-09-15 | 1995-03-15 | Plessey Semiconductors Limited | Preamplifier circuit arrangements |
| EP0616423B1 (en) * | 1993-03-16 | 1997-12-03 | Alcatel | Differential pair arrangement |
| CN1201294A (en) * | 1997-05-16 | 1998-12-09 | 松下电器产业株式会社 | Reactive-current-trimmed power amplifier and trimming method thereof |
| JP2962246B2 (en) * | 1996-10-04 | 1999-10-12 | 日本電気株式会社 | Operational amplifier |
| CN1387315A (en) * | 2001-05-18 | 2002-12-25 | 阿尔卡塔尔公司 | Operational amplifier device comprising static current control circuit |
-
2007
- 2007-11-19 CN CN2007101776876A patent/CN101442292B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1081794A (en) * | 1992-07-02 | 1994-02-09 | 莫托罗拉公司 | The method and apparatus of radio frequency amplifier biasing control |
| EP0616423B1 (en) * | 1993-03-16 | 1997-12-03 | Alcatel | Differential pair arrangement |
| EP0643479A1 (en) * | 1993-09-15 | 1995-03-15 | Plessey Semiconductors Limited | Preamplifier circuit arrangements |
| JP2962246B2 (en) * | 1996-10-04 | 1999-10-12 | 日本電気株式会社 | Operational amplifier |
| CN1201294A (en) * | 1997-05-16 | 1998-12-09 | 松下电器产业株式会社 | Reactive-current-trimmed power amplifier and trimming method thereof |
| CN1387315A (en) * | 2001-05-18 | 2002-12-25 | 阿尔卡塔尔公司 | Operational amplifier device comprising static current control circuit |
Non-Patent Citations (1)
| Title |
|---|
| JP平1-91508A 1989.04.11 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101442292A (en) | 2009-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101442292B (en) | Radio-frequency amplifier digital bias circuit, method and communication equipment | |
| CN101689869B (en) | Method and arrangement for matching an antenna | |
| CN103312272B (en) | Multi-mode doherty power amplifier | |
| EP1986331B1 (en) | A method for making a power amplifier support multi-power, a radio frequency module and a testing method | |
| CN101094430B (en) | Calibrating run device and method for terminal in dual modes | |
| US10587231B2 (en) | Multi-mode power amplifier | |
| CN101588125B (en) | Power-supply apparatus and control method, power amplifying device | |
| CN101443725B (en) | Load circuit supply voltage control | |
| CN102474294A (en) | Apparatus for controlling impedance in adaptive tuning antenna circuit | |
| CN102780090B (en) | Electrical tilt antenna and control method and system | |
| CN201733279U (en) | Power supply device and communication device of radio frequency power amplifier | |
| CN103928769B (en) | Aerial matching method, circuit and electronic equipment | |
| CN211374961U (en) | Power management chip test circuit and power management chip test system | |
| CN102545568A (en) | Terminal power supply circuit and multi-mode data card | |
| CN106953613A (en) | The power supply circuit and power regulating method of power amplifier | |
| CN107449981A (en) | The simple multiple signals coupling detection means and method of power of mobile communication amplifier | |
| CN210894607U (en) | Microwave amplifier test system | |
| CN212649420U (en) | Digital regulating circuit of power amplifier grid voltage | |
| CN111629314B (en) | Overvoltage detection reminding system and method for vehicle-mounted loudspeaker | |
| US9407227B2 (en) | Regulation of an amplification apparatus | |
| CN104897957A (en) | Power monitoring device and mobile communication terminal having same | |
| CN113507267A (en) | Power amplifier grid voltage control design method with single power supply | |
| CN105245191A (en) | Power control method of amplifier module | |
| CN102104434A (en) | Method for testing Bluetooth emission performance of mobile phone by using channel management unit (CMU) spectrum analysis module | |
| CN103092809B (en) | The linear zone method of operating of electronic installation and its processor built-in function square |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20141119 |
|
| EXPY | Termination of patent right or utility model |