CN102149180A - Method and mobile terminal for compensating omnidirectional radiation power - Google Patents
Method and mobile terminal for compensating omnidirectional radiation power Download PDFInfo
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- CN102149180A CN102149180A CN2011100772732A CN201110077273A CN102149180A CN 102149180 A CN102149180 A CN 102149180A CN 2011100772732 A CN2011100772732 A CN 2011100772732A CN 201110077273 A CN201110077273 A CN 201110077273A CN 102149180 A CN102149180 A CN 102149180A
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Abstract
The embodiment of the invention provides a method and a mobile terminal for compensating omnidirectional radiation power. The method for compensating the omnidirectional radiation power comprises the steps as follows: a return loss signal is received; demodulation is implemented on the return loss signal to obtain the voltage value of a demodulation signal; a transmission power is increased according to the voltage value of the demodulation signal so as to compensate the omnidirectional radiation power. The method and the mobile terminal for compensating the omnidirectional radiation power can be adopted to automatically and effectively adjust the omnidirectional radiation power of the mobile terminal under the condition that a head, hand or other article approach to an antenna of the mobile terminal.
Description
Technical field
The present invention relates to the mobile communication technology field, relate in particular to a kind of compensation isotropically radiated power method and portable terminal.
Background technology
Isotropically radiated power (TRP) is meant the mean value of portable terminal external radiant power of transmitter on omnirange, is commonly used to estimate the wireless radiation performance of portable terminal.Radianting capacity is strong more, and the wireless performance of terminal is good more, and is good more with the concatenation ability of network.
In the actual use of portable terminal, when the head of human body, hand or other objects during near antenna, also promptly under head, hand or the situation of other objects near mobile terminal antenna, the field boundary condition of portable terminal and antenna can change, antenna is to space impedance mismatching, and the isotropically radiated power of this portable terminal can worsen.
In the prior art, raising head, hand or other objects generally are to improve by attempting changing antenna form near the method for the TRP under the situation of mobile terminal antenna, but, because boundary condition constantly changes, can only blindly attempt, efficient is very low, and correct, hand or other objects to improve effect near the TRP of portable terminal under the situation of mobile terminal antenna also relatively poor.
Summary of the invention
The embodiment of the invention provides a kind of compensation isotropically radiated power method and portable terminal, can adjust the isotropically radiated power of portable terminal automatically, efficiently under head, hand or the situation of other objects near mobile terminal antenna.
In order to solve the problems of the technologies described above, the technical scheme of the embodiment of the invention is as follows:
On the one hand, provide a kind of compensation isotropically radiated power method, having comprised:
Receive the return loss signal;
Described return loss signal is carried out the magnitude of voltage that detection obtains rectified signal;
Magnitude of voltage according to described rectified signal increases conducted power, with the compensation isotropically radiated power.
On the other hand, also provide a kind of portable terminal, having comprised:
Signal receiving unit is used to receive the return loss signal;
Detection unit is used for described return loss signal is carried out the magnitude of voltage that detection obtains rectified signal;
Compensating unit is used for increasing conducted power according to the magnitude of voltage of described rectified signal, with the compensation isotropically radiated power.
The embodiment of the invention is by receiving the return loss signal, obtain the rectified signal of return loss signal, and compensate according to the magnitude of voltage of rectified signal isotropically radiated power to portable terminal, thereby under head, hand or the situation of other objects, solved the problem of adjusting the isotropically radiated power of portable terminal how automatically, efficiently near mobile terminal antenna.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of compensation isotropically radiated power of embodiment of the invention method flow diagram;
Fig. 2 is the another kind of compensation of an embodiment of the invention isotropically radiated power method flow diagram;
Fig. 3 is the signal processing schematic diagram of portable terminal inside among the embodiment shown in Figure 2;
Fig. 4 is the another kind of compensation of an embodiment of the invention isotropically radiated power method flow diagram;
Fig. 5 is the another kind of compensation of an embodiment of the invention isotropically radiated power method flow diagram;
Fig. 6 is the signal processing schematic diagram of portable terminal inside among the embodiment shown in Figure 5;
Fig. 7 is the structural representation of a kind of portable terminal of the embodiment of the invention;
Fig. 8 is the structural representation of the another kind of portable terminal of the embodiment of the invention;
Fig. 9 is the structural representation of the another kind of portable terminal of the embodiment of the invention.
Embodiment
In order to make those skilled in the art can further understand feature of the present invention and technology contents, see also following about detailed description of the present invention and accompanying drawing, accompanying drawing only provide with reference to and explanation, be not to be used for limiting the present invention.
Below in conjunction with drawings and Examples, technical scheme of the present invention is described.
Embodiment 1
Referring to Fig. 1, be a kind of compensation isotropically radiated power of embodiment of the invention method flow diagram.
This method can comprise:
The return loss signal is meant on transmission line and does not match owing to port that transmission signals does not spread out of by port fully, and the reflected signal of the part transmission signals that produces.In the present embodiment, can regularly or receive the return loss signal in real time, also can detect to the end, hand or other object near the time trigger and receive the return loss signal, also can also be to trigger under other the condition to receive the return loss signal.The process of concrete reception return loss signal can be chosen on the circuit between antenna feed point place or antenna feed point place and the antenna match place, by coupler or electric capacity etc. the return loss signal is transferred to wave detector, carries out next step.
After receiving the return loss signal, further this signal is carried out detection, obtain the magnitude of voltage of rectified signal.
The antenna mismatch of portable terminal is serious more, and then the isotropically radiated power deterioration is serious more, and the return loss signal that receive this moment is also strong more, and the rectified signal magnitude of voltage that the return loss signal demodulator is obtained is also just big more, need be also just many more to the compensation of isotropically radiated power.
Isotropically radiated power is that the conducted power of portable terminal is gone out by aerial radiation, and isotropically radiated power is directly proportional with the size of conducted power, so the conducted power that increases can partly be used for compensating isotropically radiated power.
The mode that increases conducted power has multiple, can determine according to the factor that influences the conducted power size, conducted power is the power by the power amplifier output of portable terminal, so the size of conducted power depends on the related work parameter of mobile terminal power amplifier.
In embodiments of the present invention, the process that increases conducted power can adopt different means to realize at the different systems of portable terminal, for example, increase the control voltage of mobile terminal power amplifier according to the magnitude of voltage of rectified signal; Perhaps increase the size of radiofrequency signal of portable terminal transceiver platform chip output and the gain amplifier of power amplifier etc. according to the magnitude of voltage of rectified signal, the concrete description that sees also subsequent embodiment repeats no more herein.
The embodiment of the invention is by receiving the return loss signal, and according to the rectified signal magnitude of voltage of the return loss signal isotropically radiated power to portable terminal is compensated, thereby under head, hand or the situation of other objects, solved the problem of adjusting the isotropically radiated power of portable terminal how automatically, efficiently near mobile terminal antenna.
Embodiment 2
Referring to Fig. 2, be the another kind of compensation of embodiment of the invention isotropically radiated power method flow diagram.
Portable terminal is an example with the radio hand-held equipment of GSM standard in the present embodiment, and this method can comprise:
In the present embodiment, the return loss signal at the point of reception antenna feedback in real time place is so that follow-up isotropically radiated power to portable terminal is adjusted in real time and compensated.Step 101 in this step and the previous embodiment is similar, repeats no more herein.
In the present embodiment, specifically can carry out detection and amplification to the return loss signal that receives in real time, obtain output signal level and also be the magnitude of voltage after the amplification of rectified signal by wave detector and operational amplifier.This magnitude of voltage is big more, then needs the compensation of isotropically radiated power just many more.
In the present embodiment, to the compensation way of portable terminal isotropically radiated power is voltage according to rectified signal, increase the control voltage of mobile terminal power amplifier, with the conducted power of increase power amplifier output, and then realization is to the compensation of isotropically radiated power.
Suppose before compensation, the control voltage of power amplifier is first magnitude of voltage, after the compensation, this control voltage increases to second magnitude of voltage, wherein increase value can be directly proportional with the magnitude of voltage of rectified signal, or be certain linear functional relation between the two, or be certain nonlinear function between the two, also can also directly equal the magnitude of voltage of this rectified signal certainly.
Concrete, as shown in Figure 3, in portable terminal, send the output radiofrequency signal of portable terminal to power amplifier 32 by transceiver platform chip 31, simultaneously by transceiver platform chip 31 to the control voltage of power amplifier 32 inputs, with the size of the conducted power of controlling this power amplifier output to this power amplifier 32.Behind the magnitude of voltage of the rectified signal that obtains the return loss signal, can be with the magnitude of voltage of this rectified signal and transceiver platform chip 31 to the magnitude of voltage of the control signal of power amplifier 32 inputs (also i.e. first magnitude of voltage), adopt adder 33 additions, the magnitude of voltage that addition is obtained and (also i.e. second magnitude of voltage) as controlling voltage, input to power amplifier 32, increase the conducted power of these power amplifier 32 outputs, and then increase the isotropically radiated power of this portable terminal.
The embodiment of the invention is by receiving the return loss signal, and increase the control voltage of the power amplifier of portable terminal according to the rectified signal voltage of return loss signal, thereby increased conducted power, thereby under head, hand or the situation of other objects, solved the problem of adjusting the isotropically radiated power of portable terminal how automatically, efficiently near mobile terminal antenna.
Embodiment 3
Referring to Fig. 4, be the another kind of method of adjustment flow chart of being with the isotropically radiated power of adaptation mechanism of the embodiment of the invention.
This method can comprise:
This step 401,402 and previous embodiment in step 201,202 similar, repeat no more herein.
In the present embodiment, can set up the corresponding relation of the control voltage of rectified signal voltage and power amplifier in advance according to experimental data.This experimentation can be after obtaining the voltage of a rectified signal, constantly increases the control voltage of power amplifier, to increase isotropically radiated power, reaches required value up to the isotropically radiated power that produces.Then, set up the magnitude of voltage of this rectified signal and the corresponding relation between the final control magnitude of voltage of adjusting.This corresponding relation can be stored in the transceiver platform chip of this portable terminal with the form of tabulation.
After the return loss signal demodulator is obtained rectified signal, directly this rectified signal is sent to the transceiver platform chip, by the magnitude of voltage of this transceiver platform chip according to this rectified signal, search the corresponding relation tabulation, for example the magnitude of voltage of rectified signal is A, according to this corresponding relation tabulation, the control magnitude of voltage of the power amplifier of magnitude of voltage A correspondence is B.
Step 404, the control magnitude of voltage of the power amplifier that finds is adjusted the control voltage of the power amplifier of portable terminal, with the compensation isotropically radiated power.
When the transceiver platform chip is after the control voltage of B adds power amplifier with this magnitude of voltage, it is the conducted power that this power amplifier output of may command meets the demands, then obtain the isotropically radiated power satisfy the demands, with the former isotropically radiated power that worsens under retrieving head, hand or the situation of other objects near mobile terminal antenna.
The embodiment of the invention is by receiving the return loss signal, and transfer the control voltage of power amplifier according to the power-level detector of return loss signal, and in view of the above control voltage is adjusted, satisfy the conducted power and the isotropically radiated power of power requirement with output, thereby under head, hand or the situation of other objects, solved the problem of adjusting the isotropically radiated power of portable terminal how automatically, efficiently near mobile terminal antenna.
Embodiment 2 and embodiment 3 are the modes to power amplifier control voltage that change the output of transceiver platform chip according to rectified signal voltage, isotropically radiated power is compensated, by increasing control voltage, increase the conducted power of power amplifier output, realized the adaptive equalization of isotropically radiated power.This mode goes for the portable terminal of GSM standard etc.
Embodiment 4
Referring to Fig. 5, be the another kind of compensation of embodiment of the invention isotropically radiated power method flow diagram.
This method can comprise:
Step 502 is carried out the magnitude of voltage that detection obtains rectified signal to the return loss signal.
This step 501,502 and previous embodiment in step 401,402 similar, repeat no more herein.
Step 503, according to the corresponding relation of the power amplification gain of the size of the rectified signal voltage of setting up in advance and transceiver platform chip signal output and power amplifier, search the size of the pairing transceiver platform chip signal output of magnitude of voltage of the rectified signal that detection obtains and the power amplification of power amplifier and gain.
In the present embodiment, can be in advance set up the corresponding relation of the power amplification gain of the size of radiofrequency signal of rectified signal voltage and the output of portable terminal transceiver platform chip and power amplifier according to experimental data.This experimentation can be after obtaining the magnitude of voltage of a rectified signal, constantly increase the output signal of portable terminal transceiver platform chip, and the power amplification gain that increases power amplifier, increase to required value until the isotropically radiated power that sends by antenna, then, set up corresponding relation between the power amplification gain of this rectified signal magnitude of voltage and final transceiver platform chip signal output size of adjusting and power amplifier.This corresponding relation can be stored in the transceiver platform of this portable terminal with the form of tabulation.
As shown in Figure 6, after the return loss signal demodulator is obtained rectified signal, directly this rectified signal is sent to transceiver platform chip 61, search the corresponding relation tabulation by transceiver platform chip 61, for example the rectified signal magnitude of voltage is C, according to this corresponding relation tabulation, the output signal size of the transceiver platform chip that it is corresponding is D, and the power amplification gain of power amplifier is E.
According to the corresponding relation that finds, transceiver platform chip 61 is the output signal of D to power amplifier 62 output sizes, and the gain amplifier of this power amplifier 62 is adjusted to E, and concrete can adjust the gain shift corresponding with this yield value.By adjusting, can increase the conducted power of these power amplifier 62 outputs, and then increase isotropically radiated power, thereby can compensate the former isotropically radiated power of deterioration by antenna output.
The embodiment of the invention is by receiving the return loss signal, and transfer corresponding parameters to increase isotropically radiated power according to the rectified signal voltage of return loss signal, realized the adaptive equalization of isotropically radiated power, thereby under head, hand or the situation of other objects, solved the problem of adjusting the isotropically radiated power of portable terminal how automatically, efficiently near mobile terminal antenna.
Embodiment 4 compensates isotropically radiated power according to the mode that rectified signal voltage is adjusted transceiver platform output signal and power amplifier gain amplifier.This mode goes for the portable terminal as CDMA standard, WCDMA standard or TD-SCDMA standard.
More than be description, below the device of realizing said method be introduced embodiment of the invention method.
Embodiment 5
Referring to Fig. 7, be the structural representation of a kind of portable terminal of the embodiment of the invention.
This portable terminal can comprise:
Signal receiving unit 701 is used to receive the return loss signal.
Detection unit 702 is used for the return loss signal is carried out the magnitude of voltage that detection obtains rectified signal.
Compensating unit 703 is used for increasing conducted power according to the magnitude of voltage of rectified signal, with the compensation isotropically radiated power.
In the present embodiment, signal receiving unit 701 can regularly or receive the return loss signal in real time, also can detect to the end, hand or other object near the time trigger and receive the return loss signal, also can also be to trigger under other the condition to receive the return loss signal.This return loss signal can be the return loss signal that selective reception antenna feed point place launches back.After signal receiving unit 701 received the return loss signal, detection unit 702 further carried out detection to this signal, obtained the rectified signal magnitude of voltage, and this detection unit 702 can comprise wave detector and operational amplifier etc.After detection unit 702 obtained the rectified signal magnitude of voltage, compensating unit 703 compensated according to the isotropically radiated power of this rectified signal magnitude of voltage to the portable terminal output signal.The antenna mismatch of portable terminal is serious more, and then the isotropically radiated power deterioration is serious more, and the return loss signal that receive this moment is also strong more, and the rectified signal magnitude of voltage that the return loss signal demodulator is obtained is also just big more, need be also just many more to the compensation of isotropically radiated power.
In another embodiment of the present invention, this compensating unit 703 can be used for increasing according to the magnitude of voltage of rectified signal the control voltage of the power amplifier of portable terminal, to increase the conducted power of power amplifier output.
The embodiment of the invention receives the return loss signal by said units, obtain rectified signal, and compensate according to the isotropically radiated power of rectified signal magnitude of voltage to portable terminal, thereby under head, hand or the situation of other objects, solved the problem of adjusting the isotropically radiated power of portable terminal how automatically, efficiently near mobile terminal antenna.
Embodiment 6
Referring to Fig. 8, be the structural representation of the another kind of portable terminal of the embodiment of the invention.
This portable terminal can also comprise signal receiving unit 801, detection unit 802, compensating unit 803.Wherein, signal receiving unit 801 and detection unit 802 are similar with signal receiving unit 701 and detection unit 702 in the previous embodiment, repeat no more herein.
In the present embodiment, this compensating unit 803 can comprise again:
First searches subelement 8031, is used for according to the corresponding relation of the rectified signal voltage of setting up in advance with the control voltage of power amplifier, searches the control magnitude of voltage of the pairing power amplifier of magnitude of voltage of the rectified signal of detection acquisition.
The first compensation subelement 8032 is used for the control magnitude of voltage according to the power amplifier that finds, the control voltage of the power amplifier of portable terminal is adjusted, to increase the conducted power of power amplifier output.
Receive the return loss signal at signal receiving unit 801, after detection unit 802 obtains the magnitude of voltage of rectified signal according to the return loss signal, first searches subelement 8031 can be according to the magnitude of voltage of this rectified signal, in stored relation table in advance, find the control voltage of the pairing power amplifier of this rectified signal magnitude of voltage, the first compensation subelement 8032 can be according to this control magnitude of voltage that finds then, power amplifier is controlled, and then produce satisfactory conducted power, and send satisfactory isotropically radiated power by antenna.This portable terminal can be the portable terminal of GSM standard.
The embodiment of the invention receives the return loss signal by said units, obtain rectified signal, and transfer the control voltage of power amplifier according to the power-level detector of rectified signal, the conducted power and the isotropically radiated power of power requirement satisfied in output, thereby under head, hand or the situation of other objects, solved the problem of adjusting the isotropically radiated power of portable terminal how automatically, efficiently near mobile terminal antenna.
Embodiment 7
Referring to Fig. 9, be the structural representation of the another kind of portable terminal of the embodiment of the invention.
This portable terminal also comprises signal receiving unit 901, detection unit 902, compensating unit 903.Wherein, signal receiving unit 901 and detection unit 902 are similar with signal receiving unit 701 and detection unit 702 in the previous embodiment, repeat no more herein.
In the present embodiment, optionally, this compensating unit 903 comprises:
Second searches subelement 9031, be used for corresponding relation, search the size of the pairing transceiver platform chip signal output of magnitude of voltage of the rectified signal that detection obtains and the power amplification of power amplifier and gain according to the power amplification gain of the size of the rectified signal voltage of setting up in advance and transceiver platform chip signal output and power amplifier.
The second compensation subelement 9032, be used for according to the size of the transceiver platform chip signal output that finds and the power amplification gain of power amplifier, the output signal of portable terminal transceiver platform chip and the power amplification gain of power amplifier are adjusted, to increase the conducted power of power amplifier output.
Receive the return loss signal at signal receiving unit 901, after detection unit 902 obtains the rectified signal magnitude of voltage according to the return loss signal, second searches subelement 9031 can be according to this rectified signal magnitude of voltage, in stored relation tabulation in advance, find the transceiver platform chip signal output size of this rectified signal magnitude of voltage correspondence and the power amplification gain of power amplifier, compensate subelement 9032 according to the data that find by second then, the size of control output signal and power amplification gain are to produce satisfactory isotropically radiated power.Portable terminal can be the radio hand-held equipment of CDMA standard, WCDMA standard or TD-SCDMA standard.
Related portable terminal includes but not limited to adopt the smart mobile phone of different system platform, non intelligent mobile phone, personal digital assistant PDA or portable equipment etc. to have the radio hand-held equipment of antenna in the embodiment of the invention.
The embodiment of the invention receives the return loss signal by said units, obtain rectified signal, and transfer corresponding parameters to increase isotropically radiated power according to rectified signal, improved head, hand or other objects wireless radiation performance near portable terminal under the situation of mobile terminal antenna.
Above-described embodiment of the present invention does not constitute the qualification to protection range of the present invention.Any modification of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the claim protection range of the present invention.
Claims (10)
1. a method that compensates isotropically radiated power is characterized in that, comprising:
Receive the return loss signal;
Described return loss signal is carried out the magnitude of voltage that detection obtains rectified signal;
Magnitude of voltage according to described rectified signal increases conducted power, with the compensation isotropically radiated power.
2. method according to claim 1 is characterized in that, described magnitude of voltage according to described rectified signal increases conducted power, comprising:
Increase the control voltage of the power amplifier of portable terminal according to the magnitude of voltage of described rectified signal, to increase the conducted power of described power amplifier output.
3. method according to claim 1 is characterized in that, described magnitude of voltage according to described rectified signal increases conducted power, comprising:
According to the corresponding relation of the rectified signal voltage of setting up in advance, search the control magnitude of voltage of the pairing power amplifier of magnitude of voltage of the described rectified signal of detection acquisition with the control voltage of power amplifier;
According to the control magnitude of voltage of the power amplifier that finds, the control voltage of the power amplifier of portable terminal is adjusted, to increase the conducted power of described power amplifier output.
4. method according to claim 1 is characterized in that, described magnitude of voltage according to described rectified signal increases conducted power, comprising:
According to the corresponding relation of the power amplification gain of the size of the rectified signal voltage of setting up in advance and transceiver platform chip signal output and power amplifier, search the size of the pairing transceiver platform chip signal output of magnitude of voltage of the described rectified signal that detection obtains and the power amplification of power amplifier and gain;
According to the size of the transceiver platform chip signal output that finds and the power amplification gain of power amplifier, the output signal of portable terminal transceiver platform chip and the power amplification gain of power amplifier are adjusted, to increase the conducted power of described power amplifier output.
5. a portable terminal is characterized in that, comprising:
Signal receiving unit is used to receive the return loss signal;
Detection unit is used for described return loss signal is carried out the magnitude of voltage that detection obtains rectified signal;
Compensating unit is used for increasing conducted power according to the magnitude of voltage of described rectified signal, with the compensation isotropically radiated power.
6. portable terminal according to claim 5 is characterized in that,
Described compensating unit specifically is used for increasing according to the magnitude of voltage of described rectified signal the control voltage of described mobile terminal power amplifier, to increase the conducted power of described power amplifier output.
7. portable terminal according to claim 5 is characterized in that, described compensating unit comprises:
First searches subelement, is used for according to the corresponding relation of the rectified signal voltage of setting up in advance with the control voltage of power amplifier, searches the control magnitude of voltage of the pairing power amplifier of magnitude of voltage of the described rectified signal of detection acquisition;
The first compensation subelement is used for the control magnitude of voltage according to the power amplifier that finds, the control voltage of the power amplifier of described portable terminal is adjusted, to increase the conducted power of described power amplifier output.
8. according to claim 6 or 7 described portable terminals, it is characterized in that described portable terminal is the radio hand-held equipment of GSM standard.
9. portable terminal according to claim 5 is characterized in that, described compensating unit comprises:
Second searches subelement, be used for corresponding relation, search the size of the pairing transceiver platform chip signal output of magnitude of voltage of the described rectified signal that detection obtains and the power amplification of power amplifier and gain according to the power amplification gain of the size of the rectified signal voltage of setting up in advance and transceiver platform chip signal output and power amplifier;
The second compensation subelement, be used for according to the size of the transceiver platform chip signal output that finds and the power amplification gain of power amplifier, the output signal of described portable terminal transceiver platform chip and the power amplification gain of power amplifier are adjusted, to increase the conducted power of described power amplifier output.
10. portable terminal according to claim 9 is characterized in that, described portable terminal is the radio hand-held equipment of following arbitrary standard:
CDMA standard, WCDMA standard, TD-SCDMA standard.
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| CN201110077273.2A CN102149180B (en) | 2011-03-29 | 2011-03-29 | Method and mobile terminal for compensating omnidirectional radiation power |
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| CN201110077273.2A CN102149180B (en) | 2011-03-29 | 2011-03-29 | Method and mobile terminal for compensating omnidirectional radiation power |
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| CN102149180B (en) | 2014-04-30 |
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