CN111600346B - Ripple wave eliminating device of power supply of communication system - Google Patents
Ripple wave eliminating device of power supply of communication system Download PDFInfo
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- CN111600346B CN111600346B CN202010360821.1A CN202010360821A CN111600346B CN 111600346 B CN111600346 B CN 111600346B CN 202010360821 A CN202010360821 A CN 202010360821A CN 111600346 B CN111600346 B CN 111600346B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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Abstract
The invention discloses a ripple wave eliminating device of a power supply of a communication system, which comprises a control module and a virtual load module, wherein the control module is used for controlling the ripple wave eliminating device; the control module is used for acquiring and recording the current communication power of a communication system, acquiring a current virtual load corresponding to the current communication power according to a preset power-load comparison table, generating a corresponding load control signal according to the current virtual load and sending the load control signal to the virtual load module; the virtual load module is used for adjusting the size of a virtual load according to the received load control signal so as to perform load compensation on the power supply of the communication system according to the adjusted virtual load. By adopting the technical scheme of the invention, the dynamic ripple of the power supply of the communication system can be eliminated, and the radio frequency signal quality and the data throughput are improved.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a ripple wave eliminating device of a power supply of a communication system.
Background
The communication system generally uses a switching power supply to supply power, when the communication system sends a radio frequency signal, the load of the switching power supply is large, when the communication system receives the radio frequency signal, the load of the switching power supply is small, in the actual communication process, because the radio frequency signal transmission and the radio frequency signal reception of the communication system are alternately carried out, the load of the switching power supply is in a continuous size change state, and in the process of dynamically adjusting the load, the following two problems easily occur: (1) the dynamic ripple is large, and the quality of radio frequency signals is influenced; (2) the dynamic response is not timely, and the throughput of the transmitted data is affected.
In order to solve the above problems, in the prior art, a dynamic response capability of the switching power supply is generally optimized by debugging an input/output circuit and a feedback loop of the switching power supply, or a large capacitor is placed near a high-power device (such as a radio frequency PA) of a communication system to optimize voltage fluctuation during current transient change, so that dynamic ripples can be reduced to a certain extent.
However, the technical solutions provided in the prior art can only optimize and mitigate the dynamic ripple of the switching power supply to a certain extent, and do not really eliminate the dynamic ripple.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a ripple cancellation device for a power supply of a communication system, which can cancel dynamic ripples of the power supply of the communication system and improve radio frequency signal quality and data throughput.
In order to solve the above technical problem, an embodiment of the present invention provides a ripple cancellation device for a power supply of a communication system, where the ripple cancellation device includes a control module and a virtual load module;
the control module is used for acquiring and recording the current communication power of a communication system, acquiring a current virtual load corresponding to the current communication power according to a preset power-load comparison table, generating a corresponding load control signal according to the current virtual load and sending the load control signal to the virtual load module;
the virtual load module is used for adjusting the size of a virtual load according to the received load control signal so as to perform load compensation on the power supply of the communication system according to the adjusted virtual load.
Further, the control module is specifically configured to obtain the power-load comparison table in advance through the following steps:
acquiring a plurality of power consumptions corresponding to the communication system under a plurality of transmitting powers;
acquiring a plurality of actual loads corresponding to the plurality of power consumptions according to the plurality of power consumptions and the circuit parameters of the power supply;
obtaining the power-load comparison table according to the plurality of transmitting powers, the plurality of power consumptions and the plurality of actual loads; wherein, the transmitting power, the power consumption and the actual load in the power-load comparison table have a one-to-one correspondence relationship.
Further, the control module is specifically configured to obtain the current virtual load by:
judging whether the current communication power is transmitting power;
when the current communication power is transmitting power, determining that the current virtual load is zero;
and when the current communication power is not the transmitting power, acquiring the transmitting power recorded at the last time, acquiring the actual load corresponding to the transmitting power recorded at the last time according to the power-load comparison table, and determining the current virtual load according to the acquired actual load.
Further, the dummy load module includes at least a resistance unit;
the virtual load module is specifically configured to adjust the resistance value of the resistance unit according to the load control signal, so as to perform load compensation on the power supply according to the adjusted resistance unit.
Compared with the prior art, the embodiment of the invention provides a ripple wave eliminating device of a power supply of a communication system, which comprises a control module and a virtual load module, wherein the control module is used for acquiring and recording the current communication power of the communication system, acquiring the current virtual load corresponding to the current communication power according to a preset power-load comparison table, generating a corresponding load control signal according to the current virtual load and sending the load control signal to the virtual load module; the virtual load module is used for adjusting the size of the virtual load according to the received load control signal so as to perform load compensation on the power supply of the communication system according to the adjusted virtual load.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of a ripple cancellation apparatus of a power supply of a communication system provided in the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.
An embodiment of the present invention provides a ripple cancellation device for a power supply of a communication system, which is shown in fig. 1 and is a schematic structural diagram of a preferred embodiment of the ripple cancellation device for the power supply of the communication system, where the ripple cancellation device includes a control module 101 and a virtual load module 102;
the control module 101 is configured to obtain and record a current communication power of the communication system 201, obtain a current virtual load corresponding to the current communication power according to a preset power-load comparison table, generate a corresponding load control signal according to the current virtual load, and send the load control signal to the virtual load module 102;
the virtual load module 102 is configured to adjust the size of a virtual load according to the received load control signal, so as to perform load compensation on the power supply 202 of the communication system 201 according to the adjusted virtual load.
Specifically, the control module 101 is connected to the communication system 201 to communicate with the communication system 201; the control module 101 is also connected with the virtual load module 102; the power supply 202 is connected to the communication system 201 to supply power to the communication system 201; the dummy load module 102 is connected to the power supply 202 to configure a dummy load for the power supply 202.
In an actual communication process, the control module 101 obtains and records a current communication power of the communication system 201, where the communication power includes a transmission power and a reception power, the obtained current communication power corresponds to the transmission power when the communication system 201 is currently in a TX state (i.e., a state of transmitting radio frequency signals), and the obtained current communication power corresponds to the reception power when the communication system 201 is currently in an RX state (i.e., a state of receiving radio frequency signals); after obtaining the current communication power, the control module 101 searches a preset power-load comparison table, obtains a current virtual load, which is required by the communication system 201 corresponding to the power supply 202 under the current communication power, according to the current communication power, generates a corresponding load control signal according to the obtained current virtual load, and sends the generated load control signal to the virtual load module 102; after receiving the load control signal sent by the control module 101, the virtual load module 102 adjusts the size of the virtual load module 102 according to the received load control signal, and performs load compensation on the power supply 202 of the communication system 201 according to the adjusted virtual load, wherein the total load of the power supply 202 is equal to the sum of the actual load and the compensated virtual load, the actual load of the power supply 202 has dynamic change (i.e., the communication system 201 is provided with a changing current), and the compensated virtual load performs complementary change (i.e., the compensated virtual load correspondingly obtains a complementary current), so that the total load of the power supply 202 is kept unchanged.
It should be noted that the control module 101 may be disposed outside the communication system 201, or the control module 101 may also be disposed inside the communication system 201, for example, the control module 101 is a controller such as a CPU in the communication system 201, and the embodiment of the present invention is not limited in particular.
The ripple wave eliminating device of the power supply of the communication system comprises a control module and a virtual load module, wherein the control module is used for acquiring and recording the current communication power of the communication system, acquiring the current virtual load corresponding to the current communication power according to a preset power-load comparison table, generating a corresponding load control signal according to the current virtual load and sending the corresponding load control signal to the virtual load module; the size of the virtual load is adjusted by the virtual load module according to the received load control signal, so that the load compensation is carried out on the power supply of the communication system according to the adjusted virtual load, the dynamic ripple of the power supply of the communication system can be eliminated, the quality of the radio frequency signal is improved, and the data throughput is improved.
In another preferred embodiment, as shown in fig. 1, the control module 101 is specifically configured to obtain the power-load comparison table in advance through the following steps:
acquiring a plurality of power consumptions corresponding to the communication system 201 under a plurality of transmitting powers;
acquiring a plurality of actual loads corresponding to the plurality of power consumptions according to the plurality of power consumptions and the circuit parameters of the power supply 202;
obtaining the power-load comparison table according to the plurality of transmitting powers, the plurality of power consumptions and the plurality of actual loads; wherein, the transmitting power, the power consumption and the actual load in the power-load comparison table have a one-to-one correspondence relationship.
Specifically, with reference to the above embodiment, the control module 101 is preset with a power-load comparison table, where the power-load comparison table includes a plurality of transmission powers of the communication system 201, power consumption of the communication system 201 corresponding to each transmission power, and an actual load of the power supply 202 corresponding to each transmission power, and the transmission power, the power consumption, and the actual load in the power-load comparison table have a one-to-one correspondence relationship.
When the power-load comparison table is obtained, the control module 101 first obtains a plurality of power consumptions corresponding to the communication system 201 under a plurality of transmission powers, then obtains an actual load of the power supply 202 corresponding to each power consumption according to the obtained plurality of power consumptions and circuit parameters of the power supply 202 corresponding to each power consumption, correspondingly obtains a plurality of actual loads, and finally stores the obtained plurality of transmission powers, the obtained plurality of power consumptions and the obtained plurality of actual loads into a preset empty power-load comparison table, so as to obtain the power-load comparison table.
It should be noted that the transmission power of the communication system 201 can be obtained by self-defining according to the performance of the communication system 201, and the transmission power of the communication system 201 varies within a certain range in different scenarios; the power consumption (i.e., the output power of the corresponding power supply 202) of the communication system 201 under each transmission power can be obtained by testing according to the actual working state of the communication system 201; the actual load of the power supply 202 of the communication system 201 at each transmission power can be calculated according to the corresponding power consumption and circuit parameters (such as power supply voltage, current, etc.).
It can be understood that, in order to obtain a more accurate power-load comparison table, the transmission power of the communication system 201 may be divided more finely, that is, the more the number of the transmission power in the power-load comparison table, the higher the matching degree of the current communication power in the power-load comparison table, the more accurate the current virtual load obtained correspondingly, that is, the better the load compensation effect on the power supply 202.
In another preferred embodiment, as shown in fig. 1, the control module 101 is specifically configured to obtain the current virtual load by:
judging whether the current communication power is transmitting power;
when the current communication power is transmitting power, determining that the current virtual load is zero;
and when the current communication power is not the transmitting power, acquiring the transmitting power recorded at the last time, acquiring the actual load corresponding to the transmitting power recorded at the last time according to the power-load comparison table, and determining the current virtual load according to the acquired actual load.
Specifically, with reference to the above embodiment, after obtaining the current communication power, the control module 101 determines whether the current communication power is a transmission power, and when determining that the current communication power is the transmission power, it indicates that the communication system 201 is currently in the TX state, and because the load of the power supply 202 in the TX state is large, load compensation is not required, and the current virtual load is set to be zero; when the current communication power is determined not to be the transmission power, it is determined that the communication system 201 is currently in a non-TX state (i.e., an RX state), and the load of the power supply 202 in the RX state is small, so that load compensation is required, the control module 101 obtains the transmission power recorded last time, and searches the actual load corresponding to the transmission power recorded last time in the power-load comparison table according to the transmission power recorded last time, so as to determine the current virtual load according to the actual load corresponding to the searched transmission power recorded last time.
For example, assuming that the current communication power is determined not to be the transmission power, and the actual load of the power supply 202 of the communication system 201 is R1 at this time, the actual load corresponding to the transmission power of the last record found in the power-load comparison table is R2, then the current virtual load R is determined to be R2-R1.
In yet another preferred embodiment, as shown in fig. 1, the dummy load module 102 includes at least a resistor unit;
the virtual load module 102 is specifically configured to adjust the resistance value of the resistance unit according to the load control signal, so as to perform load compensation on the power supply 202 according to the adjusted resistance unit.
Specifically, with reference to the foregoing embodiment, after receiving the load control signal sent by the control module 101, the virtual load module 102 adjusts the resistance value of the resistance unit according to the received load control signal, and performs load compensation on the power supply 202 of the communication system 201 according to the adjusted resistance unit, so as to provide additional virtual load compensation for the power supply 202 through the resistance value of the resistance unit, so as to maintain the total load of the power supply 202 constant.
To sum up, the ripple cancellation device of the power supply of the communication system provided by the embodiment of the present invention has the following beneficial effects:
(1) the dynamic ripple of a power supply of a communication system can be eliminated, and the influence of the quality of the power supply on the radio-frequency signal is reduced, so that the quality of the radio-frequency signal is improved;
(2) the method can avoid the untimely dynamic response of the power supply and reduce the influence of the dynamic response capability on the data throughput, thereby improving the data throughput;
(3) in the prior art, dynamic ripples of a power supply can be optimized and relieved only to a certain extent, and the embodiment of the invention can really solve the problem of dynamic adjustment of the power supply and improve the stability of a communication system;
(4) the power supply scheme in the prior art is various, aiming at the debugging of dynamic ripples, the debugging effects corresponding to different schemes are different, and the debugging process is limited by the power supply scheme;
(5) in the prior art, a large capacitor is arranged near a high-power device (such as a radio frequency PA) of a communication system, so that the requirement on the layout space of a circuit board is high, the cost of the large capacitor is high, the embodiment of the invention does not need to change the hardware structure of the communication system, and the cost is relatively low because the external resistor is used for load compensation.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (3)
1. The ripple wave eliminating device of the power supply of a kind of communication system, characterized by, the said device includes control module and fictitious load module;
the control module is used for acquiring and recording the current communication power of a communication system, acquiring a current virtual load corresponding to the current communication power according to a preset power-load comparison table, generating a corresponding load control signal according to the current virtual load and sending the load control signal to the virtual load module;
the virtual load module is used for adjusting the size of a virtual load according to the received load control signal so as to perform load compensation on a power supply of the communication system according to the adjusted virtual load;
the control module is specifically configured to obtain the current virtual load by:
judging whether the current communication power is transmitting power;
when the current communication power is transmitting power, determining that the current virtual load is zero;
and when the current communication power is not the transmitting power, acquiring the transmitting power recorded at the last time, acquiring the actual load corresponding to the transmitting power recorded at the last time according to the power-load comparison table, and determining the current virtual load according to the acquired actual load.
2. The ripple cancellation device of a power supply of a communication system according to claim 1, wherein the control module is specifically configured to pre-obtain the power-load comparison table by:
acquiring a plurality of power consumptions corresponding to the communication system under a plurality of transmitting powers;
acquiring a plurality of actual loads corresponding to the plurality of power consumptions according to the plurality of power consumptions and the circuit parameters of the power supply;
obtaining the power-load comparison table according to the plurality of transmitting powers, the plurality of power consumptions and the plurality of actual loads; wherein, the transmitting power, the power consumption and the actual load in the power-load comparison table have a one-to-one correspondence relationship.
3. The ripple cancellation apparatus of a power supply source of a communication system according to claim 1, wherein the dummy load module includes at least a resistance unit;
the virtual load module is specifically configured to adjust the resistance value of the resistance unit according to the load control signal, so as to perform load compensation on the power supply according to the adjusted resistance unit.
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| CN202010360821.1A CN111600346B (en) | 2020-04-30 | 2020-04-30 | Ripple wave eliminating device of power supply of communication system |
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| CN202010360821.1A CN111600346B (en) | 2020-04-30 | 2020-04-30 | Ripple wave eliminating device of power supply of communication system |
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| CN111600346B true CN111600346B (en) | 2022-05-06 |
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| CN114614849A (en) * | 2020-12-08 | 2022-06-10 | 南昌华勤电子科技有限公司 | Voltage regulation circuit, method, chip and equipment |
| CN113595757B (en) * | 2021-06-17 | 2024-06-07 | 深圳市联洲国际技术有限公司 | Method and device for optimizing working performance of communication system |
| CN116266767B (en) * | 2021-12-17 | 2024-08-27 | 华润微集成电路(无锡)有限公司 | Method for applying virtual load to wireless charging receiving end |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH05236743A (en) * | 1991-12-25 | 1993-09-10 | Tokyo Electric Co Ltd | Switching power source unit |
| JP3981114B2 (en) * | 2004-11-26 | 2007-09-26 | Ｔｄｋ株式会社 | Switching power supply |
| US7209060B2 (en) * | 2005-07-28 | 2007-04-24 | Texas Instruments Incorporated | Reducing variation in reference voltage when the load varies dynamically |
| CN202119807U (en) * | 2011-04-22 | 2012-01-18 | 瑞传科技股份有限公司 | System load test interchangeable dynamic adjusting device |
| CN108255224B (en) * | 2018-01-22 | 2019-10-29 | 珠海格力电器股份有限公司 | Power supply device, control method and control system for power supply output voltage and unit |
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Effective date of registration: 20220608 Address after: 200000 5th floor, No. 1 and 5, Lane 168, Xumin Road, Qingpu District, Shanghai Patentee after: Shanghai LianHong Technology Co.,Ltd. Address before: 518000 the 1st and 3rd floors of the south section of building 24 and the 1st-4th floor of the north section of building 28, Shennan Road Science and Technology Park, Nanshan District, Shenzhen City, Guangdong Province Patentee before: TP-LINK TECHNOLOGIES Co.,Ltd. |