CN101959294B - Mismatching processing methods and device for power amplifier of wireless transmitter - Google Patents
Mismatching processing methods and device for power amplifier of wireless transmitter Download PDFInfo
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- CN101959294B CN101959294B CN2010102688785A CN201010268878A CN101959294B CN 101959294 B CN101959294 B CN 101959294B CN 2010102688785 A CN2010102688785 A CN 2010102688785A CN 201010268878 A CN201010268878 A CN 201010268878A CN 101959294 B CN101959294 B CN 101959294B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses mismatching processing methods and device for a power amplifier of a wireless transmitter. One of the methods comprises the following steps of: determining whether the power amplifier of the wireless transmitter meets mismatching conditions; starting using an isolator for isolation processing between the power amplifier and an antenna matching circuit of the wireless transmitter; and stopping using the isolator when the power amplifier meets the mismatching conditions once again. Another method comprises the following steps of: determining whether the power amplifier of the wireless transmitter meets mismatching conditions; regulating the input power of the power amplifier according to the maximum wired simulated transmitting power of the power amplifier under matching conditions so as to control the output power of the power amplifier. Compared with the technical scheme of introducing the isolator in the wireless transmitter in the prior art, the invention notonly can ensure that the maximum wireless power consumption can not exceed the maximum wired power consumption, but also can reduce wired power consumption and avoid increasing power consumption and heat production at ordinary times when mismatching does not occur; moreover, the sensitivity of the product on the size and the cost of the isolator can be avoided.
Description
Technical field
The present invention relates to communication technical field, relate in particular to mismatch processing method and the device of transmitting set power amplifier.
Background technology
The radio circuit of mobile phone employing at present is for control and reduce wired power consumption, PA(Power Amplifier, power amplifier) to RF Switch(Radio Frequency Switch, radio-frequency (RF) switch) between the ideal value of load for transfer under the given power output, Loa d pull(load characteristic when the linearity satisfies 3GPP agreement index allowance and requires) the best point of efficient on the curve, generally 50 ohm is a kind of selection of relatively compromising; Antenna-matching circuit after the radio-frequency (RF) switch also usually the coupling transfer to 50 ohm.
At present industry wireless test standard such as mobile phone is to build under the free space, and antenna mismatch can occur and cause the power amplifier mismatch during the actual use of user.When the power amplifier mismatch occurring, wireless real net power consumption (power consumption when reality is used under the wireless environment) may appear much larger than wired analog power consumption (power consumption that experiment is measured under the cable environment), its reason is to be to be 50 ohm according to the PA back loading to be optimized when design, and during actual the use in the standing wave variation after to a certain degree, load departs from 50 ohm, and indexs such as the efficient of PA, the linearity, gain all can worsen.
To this, prior art is added isolator between PA and duplexer, can guarantee the influence that the PA back loading is not used, and wireless maximum power dissipation can not surpass wired maximum power dissipation.
Yet the inventor finds that there is following deficiency in prior art in realizing process of the present invention:
Isolator can increase differential loss 0.5～1dB behind the PA, compares with the scheme of no isolator, will increase wired power consumption.At some application scenarios, as wireless data card, the mismatch probability is less, also can increase power consumption and heating when mismatch not occurring at ordinary times.
Summary of the invention
The embodiment of the invention provides a kind of mismatch processing method of transmitting set power amplifier, in order to reduce wired power consumption, avoids increasing power consumption and heating when mismatch not occurring at ordinary times, and this method comprises:
The power amplifier of determining transmitting set satisfies mismatch condition;
Between the antenna-matching circuit of described power amplifier and described transmitting set, enable isolator and carry out isolation processing;
When described power amplifier Satisfying Matching Conditions again, the described isolator of stopping using;
The power amplifier of described definite transmitting set satisfies mismatch condition, comprising:
Wireless real net operating current under the described transmitting set equal transmit power and wired simulation test electric current are compared; During greater than threshold value, determine that described power amplifier satisfies mismatch condition greater than wired simulation test electric current and the difference of the two at described wireless real net operating current;
Or, voltage standing wave ratio and the threshold value of described transmitting set compared; When the voltage standing wave ratio of described transmitting set surpasses threshold value, determine that described power amplifier satisfies mismatch condition;
Or, when satisfying following condition one of them or combination in any, determine that described power amplifier satisfies mismatch condition: the earphone of described transmitting set does not use, hands-free intercommunication pattern is not opened, detect described transmitting set by transducer when conversing is higher than threshold value near human body, wireless real net transmitting power.
The embodiment of the invention also provides a kind of mismatch processing method of transmitting set power amplifier, in order to evade product to the sensitiveness of isolator volume and cost, reduces wired power consumption, avoids increasing power consumption and heating when mismatch not occurring at ordinary times, and this method comprises:
Voltage standing wave ratio and the threshold value of described transmitting set are compared; When described voltage standing wave ratio surpasses threshold value, determine that the power amplifier of transmitting set satisfies mismatch condition; Or, operating current and the maximum complete machine operating current limit value of described transmitting set compared; When described operating current exceeds maximum complete machine operating current limit value, determine that described power amplifier satisfies mismatch condition;
Adjust the input power of described power amplifier according to maximum wired analog transmissions power of described power amplifier under matching condition, to control the power output of described power amplifier.
The embodiment of the invention also provides a kind of transmitting set, in order to reduce wired power consumption, avoids increasing power consumption and heating when mismatch not occurring at ordinary times, and this transmitting set comprises power amplifier and antenna-matching circuit, also comprises:
Isolator is connected between power amplifier and the antenna-matching circuit, is used for carrying out isolation processing;
The coupling determination module is used for determining whether described power amplifier satisfies mismatch condition;
The isolated controlling module is used for enabling described isolator and carrying out isolation processing when definite described power amplifier satisfies mismatch condition; When described power amplifier Satisfying Matching Conditions again, the described isolator of stopping using;
Described transmitting set also comprises: current monitoring circuit, for detection of wireless real net operating current and wired simulation test electric current of described transmitting set; Described coupling determination module specifically is used for: the wireless real net operating current under the described transmitting set equal transmit power and wired simulation test electric current are compared; Wireless real net operating current under described equal transmit power during greater than threshold value, determines that described power amplifier satisfies mismatch condition greater than wired simulation test electric current and the difference of the two;
Or described transmitting set also comprises: standing wave detection circuit, and be used for that described transmitting set is carried out standing wave and detect, obtain the voltage standing wave ratio of described transmitting set; Described coupling determination module specifically is used for: described voltage standing wave ratio and threshold value are compared, when described voltage standing wave ratio surpasses threshold value, determine that described power amplifier satisfies mismatch condition;
Or, described coupling determination module specifically is used for: when satisfying following condition one of them or combination in any, determine that described power amplifier satisfies mismatch condition: the earphone of described transmitting set does not use, hands-free intercommunication pattern is not opened, detect described transmitting set by transducer when conversing is higher than threshold value near human body, wireless real net transmitting power.
The embodiment of the invention also provides a kind of mismatch processing unit of transmitting set power amplifier, in order to evade product to the sensitiveness of isolator volume and cost, reduces wired power consumption, avoids increasing power consumption and heating when mismatch not occurring at ordinary times, and this device comprises:
The standing wave detection module is used for that described transmitting set is carried out standing wave and detects, and obtains the voltage standing wave ratio of described transmitting set; Or the current monitoring module is used for described transmitting set is carried out current detecting, obtains the operating current of described transmitting set;
Determination module is used for described voltage standing wave ratio and threshold value are compared, and when described voltage standing wave ratio surpasses threshold value, determines that the power amplifier of transmitting set satisfies mismatch condition; Or, described operating current and maximum complete machine operating current limit value are compared, when described operating current exceeds maximum complete machine operating current limit value, determine that described power amplifier satisfies mismatch condition;
Power control module is for the input power of adjusting described power amplifier according to maximum wired analog transmissions power of described power amplifier under matching condition, to control the power output of described power amplifier.
In the embodiment of the invention, when the power amplifier of transmitting set satisfies mismatch condition, between the antenna-matching circuit of described power amplifier and described transmitting set, enable isolator and carry out isolation processing; When described power amplifier Satisfying Matching Conditions again, the described isolator of stopping using; With respect to isolator in the prior art is in initiate mode always when transmitting set is worked for, when guaranteeing that wireless maximum power dissipation can not surpass wired maximum power dissipation, reduce wired power consumption relatively, and avoided increasing power consumption and heating when mismatch not occurring at ordinary times.
In the embodiment of the invention, when the power amplifier of transmitting set satisfies mismatch condition, adjust the input power of described power amplifier according to maximum wired analog transmissions power of described power amplifier under matching condition, to control the power output of described power amplifier; With respect to prior art for the technical scheme of introducing isolator in the transmitting set, when guaranteeing that wireless maximum power dissipation can not surpass wired maximum power dissipation, evaded the sensitiveness of product to isolator volume and cost, also reduce wired power consumption, avoided increasing power consumption and heating when mismatch not occurring at ordinary times.
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.In the accompanying drawings:
Fig. 1 is the mismatch process flow figure of transmitting set power amplifier in the embodiment of the invention;
Fig. 2 is the structural representation of current monitoring circuit in the embodiment of the invention;
Fig. 3 A is a kind of schematic diagram of introducing isolator in the embodiment of the invention in transmitting set;
Fig. 3 B is another schematic diagram of introducing isolator in the embodiment of the invention in transmitting set;
Fig. 4 is the mismatch process flow figure of another transmitting set power amplifier in the embodiment of the invention;
Fig. 5 is the structural representation of transmitting set in the embodiment of the invention;
Fig. 6 is the structural representation of the instantiation of the transmitting set of Fig. 5 in the embodiment of the invention;
Fig. 7 is the structural representation of the mismatch processing unit of transmitting set power amplifier in the embodiment of the invention;
Fig. 8 is the structural representation of determination module 701 in the embodiment of the invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer, below in conjunction with accompanying drawing the embodiment of the invention is described in further details.At this, illustrative examples of the present invention and explanation thereof are used for explanation the present invention, but not as a limitation of the invention.
As shown in Figure 1, in the embodiment of the invention, the mismatch process flow of transmitting set power amplifier can comprise:
Can be learnt by flow process shown in Figure 1, in the embodiment of the invention, when the power amplifier of transmitting set satisfies mismatch condition, between the antenna-matching circuit of described power amplifier and described transmitting set, enable isolator and carry out isolation processing; When described power amplifier Satisfying Matching Conditions again, the described isolator of stopping using; With respect to isolator in the prior art is in initiate mode always when transmitting set is worked for, when guaranteeing that wireless maximum power dissipation can not surpass wired maximum power dissipation, reduce wired power consumption relatively, and avoided increasing power consumption and heating when mismatch not occurring at ordinary times.
During concrete enforcement, step 101 determines that the power amplifier of transmitting set satisfies mismatch condition numerous embodiments can be arranged.For example can be embodied as: the wireless real net operating current under the described transmitting set equal transmit power and wired simulation test electric current are compared; During greater than threshold value, determine that described power amplifier satisfies mismatch condition greater than wired simulation test electric current and the difference of the two at described wireless real net operating current.Step 101 can be finished by the circuit that can realize this function or chip, for example base band control chip etc.
In the enforcement, can current monitoring circuit be set at the power supply circuits of power amplifier, in order to detect wireless real net operating current and wired simulation test electric current.Current monitoring circuit detects is the electric current of same power amplifier of flowing through, concrete, it is wireless real net operating current that this current monitoring circuit is in what detect under the wireless real net working condition at transmitting set, and being in what detect under wired simulation test situation at transmitting set is wired simulation test electric current.Be under the wireless real net working condition or be under wired simulation test situation for transmitting set, can be predicted by miscellaneous equipment.
Current monitoring circuit can have multiple version, lift a current monitoring circuit structural representation shown in Figure 2 for example, (power supply of other quantity is also passable in implementing certainly to suppose to have 3 power supplies in this example, working frequency range at transmitting set is more, or when comprising the situations such as module of the different voltages of needs, power supply can be for a plurality of), the power consumption that needs test power supply 1～3, then at the power line of power supply 1～3 series connection sampling resistor R1～R3, three tunnel analog signals of power supply 1～3 output can be input to analog switch simultaneously, also can delete as required; Which electric current the base band control chip can test by procedure Selection, also can control the multiplication factor of amplifier able to programme according to the size of input signal, and also controlled molding/number (A/D) converts signal sampling.
And for example, step 101 determines that the power amplifier of transmitting set satisfies mismatch condition and also can be embodied as: voltage standing wave ratio and the threshold value of described transmitting set are compared; When described voltage standing wave ratio surpasses threshold value, determine that described power amplifier satisfies mismatch condition.In the enforcement, can standing wave detection circuit be set at the radio circuit of transmitting set, this standing wave detection circuit carries out standing wave to described transmitting set and detects, and obtains the voltage standing wave ratio of described transmitting set.This standing wave detection circuit also can have multiple version, enumerates no longer one by one herein.
Certainly, in step 101, can also be when satisfying following condition one of them or combination in any, determine that described power amplifier satisfies mismatch condition: the earphone of described transmitting set does not use, hands-free intercommunication pattern is not opened, detect described transmitting set by transducer (as range sensor, perhaps infrared sensor, light sensor etc.) when conversing is higher than threshold value (as Pout〉10dBm) etc. near human body, wireless real net transmitting power.The condition of herein listing still is instantiation, and the mismatch condition of described power amplifier can be set during enforcement as required.The earphone of listing described transmitting set does not herein use, hands-free intercommunication pattern is not opened is to consider: to type products such as mobile phones, the mismatch probability is more than 99% when making a phone call to put in one's ear, therefore can judge whether to be in the situation that earphone does not use, hands-free intercommunication pattern is not opened by software.
During concrete enforcement, step 102 is between the antenna-matching circuit of described power amplifier and described transmitting set, enable isolator and carry out isolation processing, can comprise: between the coupler and duplexer of described transmitting set, enable described isolator and carry out isolation processing; Wherein: described coupler links to each other with described isolator with described power amplifier respectively, and described duplexer links to each other with the radio-frequency (RF) switch of described isolator and described transmitting set respectively, and described radio-frequency (RF) switch links to each other with described antenna-matching circuit.
Fig. 3 A is a kind of schematic diagram of introducing isolator in transmitting set.In the transmitting set of Fig. 3 A, signal is through the transceiver module input filter, export power amplifier to through filter, after power amplifier output, export antenna (T RP) to through coupler, duplexer, radio-frequency (RF) switch, antenna-matching circuit successively and launch; Wherein, isolator is connected between coupler and the duplexer, can keep apart the circuit of front and back, and the circuit variation of back can not exert an influence to the circuit of front, thereby stable load is provided; That is, isolator is kept apart power amplifier and antenna-matching circuit, and antenna mismatch can't cause the power amplifier mismatch.Also show supply line among Fig. 3 A, this supply line is provided with the current monitoring circuit (not shown), can be used for detecting wireless real net operating current and wired simulation test electric current, and concrete structure can be as shown in Figure 2.After detecting wireless real net operating current and wired simulation test electric current, the two can be compared, at described wireless real net operating current greater than wired simulation test electric current and the difference of the two during greater than threshold value, determine that described power amplifier satisfies mismatch condition, carry out isolation processing thereby enable isolator.
Fig. 3 B and Fig. 3 category-A seemingly, isolator is connected between coupler and the duplexer, utilizes standing wave detection circuit that described transmitting set is carried out standing wave among Fig. 3 B and detects, and obtains the voltage standing wave ratio of described transmitting set; Thereby when described voltage standing wave ratio surpasses threshold value, can determine that described power amplifier satisfies mismatch condition, enable isolator and carry out isolation processing.
Certainly, in the enforcement, isolator also can not be connected between coupler and the duplexer, but is connected to the arbitrary place between power amplifier and the antenna-matching circuit, play isolated power amplifier and antenna-matching circuit, antenna mismatch can not cause the effect of power amplifier mismatch to get final product.
During concrete enforcement, in the step 102 between the antenna-matching circuit of described power amplifier and described transmitting set, enabling isolator carries out isolation processing numerous embodiments can be arranged, for example: be connected to the by-pass switch at described isolator two ends by disconnection, enable described isolator and carry out isolation processing.All show the signal that is connected of by-pass switch among Fig. 3 A and Fig. 3 B, as shown in the figure, when the power amplifier of determining transmitting set satisfied mismatch condition, bypass switch opens can be enabled isolator and be carried out isolation processing.Certainly, enabling isolator by bypass switch opens is an example only, also can adopt other can enable the method for isolator in the enforcement.
During concrete enforcement, after having introduced aforementioned by-pass switch, in the step 103 when described power amplifier Satisfying Matching Conditions again, inactive described isolator, can comprise: be lower than threshold value (during as Pout≤5dBm) in the wireless real net transmitting power of described transmitting set, by the described by-pass switch of closure, the described isolator of stopping using.Namely by-pass switch is closed at ordinary times, and isolator is inoperative; When the power amplifier mismatch, by-pass switch disconnects, and isolator comes into operation, thus the operation conditions of guaranteed output amplifier apart from the deviation of design within controlled range.Fig. 3 A and Fig. 3 B also show a base band control chip in order to determine power amplifier and satisfy mismatch condition or matching condition and to control the disconnection of by-pass switch accordingly or close.This base band control chip can also be other circuit or the chip that can realize its function during enforcement.
Certainly, power amplifier again Satisfying Matching Conditions except wireless real net transmitting power is lower than threshold value, multiple situation can also be arranged, for example detected wireless real net operating current less than the earphone that wired simulation test electric current, voltage standing wave ratio are lower than threshold value, transmitting set use, hands-free intercommunication pattern is opened, detect described transmitting set near situations such as human bodies by transducer when conversing.Under these conditions, can think that mismatch is eliminated or to power consumption influence can ignore, power amplifier is Satisfying Matching Conditions again.In addition, the mode of the isolator of stopping using can also adopt the method for other isolator of can stopping using except closes bypass switch.
Based on same inventive concept, the present invention also provides a kind of mismatch processing method of transmitting set power amplifier, and as shown in Figure 4, its handling process can comprise:
Can be learnt by flow process shown in Figure 4, in the embodiment of the invention, when the power amplifier of transmitting set satisfies mismatch condition, adjust the input power of described power amplifier according to maximum wired analog transmissions power of described power amplifier under matching condition, to control the power output of described power amplifier; With respect to prior art for the technical scheme of introducing isolator in the transmitting set, when guaranteeing that wireless maximum power dissipation can not surpass wired maximum power dissipation, evaded the sensitiveness of product to isolator volume and cost, also reduce wired power consumption, avoided increasing power consumption and heating when mismatch not occurring at ordinary times.When implementing, between the sensitiveness of product to isolator volume and cost, can evade by software, can not re-use no isolator and by-pass switch on the hardware.Step 401 and step 402 can realize by the base band control chip, also can realize by software.The base band control chip can also be other circuit or the chip that can realize controlling function, for example CPU (CPU).
During concrete enforcement, step 401 determines that the power amplifier of transmitting set satisfies mismatch condition numerous embodiments can be arranged, for example: voltage standing wave ratio and the threshold value of described transmitting set are compared; When described voltage standing wave ratio surpasses threshold value, determine that described power amplifier satisfies mismatch condition.Standing wave detection circuit can be set at the radio circuit of transmitting set this moment carry out the standing wave detection, can certainly detect by software.After standing wave detection affirmation power amplifier mismatch, namely under mismatch Conditions, power amplifier output loading characteristic changes in transmitting chain work, and the output signal performance is by severe exacerbation, and efficient reduces, power consumption increases.At this moment, adjust the input power of PA with maximum wired analog transmissions performance number (AGC) of PA under match condition, thereby pass through the power output of the adjustment control power amplifier of input power, avoid the complete machine electric current to be raised by unconfined.
Step 401 determines that the power amplifier of transmitting set satisfies mismatch condition and also can be embodied as: operating current and the maximum complete machine operating current limit value of described transmitting set are compared; When described operating current exceeds maximum complete machine operating current limit value, determine that described power amplifier satisfies mismatch condition.At this moment, current monitoring circuit can be set to detect the operating current that obtains transmitting set at the power supply circuits of power amplifier, can certainly detect by software.After confirming that by current detecting the real work electric current exceeds maximum complete machine operating current limit value; think that namely power amplifier and loaded work piece thereof are under abnormality; the big electric current that continues will cause the product damage; adjust the input power of PA with maximum wired analog transmissions performance number (AGC) of PA under match condition, thereby the power output of the adjustment control power amplifier by input power is protected product.
Based on same inventive concept, the embodiment of the invention also provides a kind of transmitting set, its structure as shown in Figure 5, this transmitting set can comprise power amplifier 501 and antenna-matching circuit 502, can also comprise:
Coupling determination module 505 is used for determining whether power amplifier 501 satisfies mismatch condition;
Isolated controlling module 504 is used for enabling isolator 503 and carrying out isolation processing when definite power amplifier 501 satisfies mismatch condition; When power amplifier 501 Satisfying Matching Conditions again, the isolator 503 of stopping using.Isolated controlling module 504 can be implemented by the circuit that possesses its function or chip, for example can be implemented by base band control chip or CPU.
Fig. 6 is the instantiation of transmitting set shown in Figure 5.
In one embodiment, transmitting set shown in Figure 5 can also comprise:
Current monitoring circuit 601 is for detection of wireless real net operating current and wired simulation test electric current of transmitting set;
Coupling determination module 505 specifically can be used for:
Wireless real net operating current under the transmitting set equal transmit power and wired simulation test electric current are compared; Wireless real net operating current under equal transmit power during greater than threshold value, determines that power amplifier satisfies mismatch condition greater than wired simulation test electric current and the difference of the two;
Perhaps, in another embodiment, transmitting set shown in Figure 5 can also comprise:
Standing wave detection circuit 602 is used for that transmitting set is carried out standing wave and detects, and obtains the voltage standing wave ratio of transmitting set;
Coupling determination module 505 specifically can be used for: described voltage standing wave ratio and threshold value are compared, when voltage standing wave ratio surpasses threshold value, determine that power amplifier satisfies mismatch condition;
Perhaps, in another embodiment, coupling determination module 505 specifically can be used for: when satisfying following condition one of them or combination in any, determine that described power amplifier satisfies mismatch condition: the earphone of described transmitting set does not use, hands-free intercommunication pattern is not opened, detect described transmitting set by transducer (as range sensor, perhaps infrared sensor, light sensor etc.) when conversing is higher than threshold value near human body, wireless real net transmitting power.
Among the embodiment, transmitting set shown in Figure 5 can also comprise:
Described coupler 603 links to each other with described isolator 503 with described power amplifier 501 respectively, and described duplexer 604 links to each other with described radio-frequency (RF) switch 605 with described isolator 503 respectively, and described radio-frequency (RF) switch 605 links to each other with described antenna-matching circuit 503.
Among the embodiment, transmitting set shown in Figure 5 can also comprise:
By-pass switch 606 is connected to described isolator 503 two ends;
Described isolated controlling module 504 specifically can be used for:
Be used for when definite power amplifier 501 satisfies mismatch condition, control bypass switch opens 606 is enabled described isolator 503 and is carried out isolation processing.
Among the embodiment, isolated controlling module 504 specifically can be used for:
When power amplifier 501 Satisfying Matching Conditions again, control closed described by-pass switch 606, the described isolator of stopping using.
Based on same inventive concept, the embodiment of the invention also provides a kind of mismatch processing unit of transmitting set power amplifier, its structure as shown in Figure 7, this device can comprise:
Above-mentioned determination module 701 can be realized by base band control chip or software.Power control module 702 can be realized by the base band control chip, is namely adjusted the input power of power amplifier by the base band control chip, with the power output of control power amplifier; Power control module 702 also can be realized by software, namely by the adjustment of software realization to the input power of power amplifier, with the power output of control power amplifier.Aforementioned base band control chip also can be other circuit or the chip that can realize its function.
As shown in Figure 8, among the embodiment, device shown in Figure 7 can also comprise:
Standing wave detection module 801 is used for that described transmitting set is carried out standing wave and detects, and obtains the voltage standing wave ratio of described transmitting set; Determination module 701 specifically can be used for: described voltage standing wave ratio and threshold value are compared, when described voltage standing wave ratio surpasses threshold value, determine that described power amplifier satisfies mismatch condition; Standing wave detection module 801 can be realized by standing wave detection circuit or software;
Or device shown in Figure 7 can also comprise: current monitoring module 802, be used for described transmitting set is carried out current detecting, and obtain the operating current of described transmitting set; Determination module 701 specifically can be used for: described operating current and maximum complete machine operating current limit value are compared, when described operating current exceeds maximum complete machine operating current limit value, determine that described power amplifier satisfies mismatch condition.Current monitoring module 802 can be realized by current monitoring circuit or software.
In sum, in the embodiment of the invention, when the power amplifier of transmitting set satisfies mismatch condition, between the antenna-matching circuit of described power amplifier and described transmitting set, enable isolator and carry out isolation processing; When described power amplifier Satisfying Matching Conditions again, the described isolator of stopping using; With respect to isolator in the prior art is in initiate mode always when transmitting set is worked for, when guaranteeing that wireless maximum power dissipation can not surpass wired maximum power dissipation, reduce wired power consumption relatively, and avoided increasing power consumption and heating when mismatch not occurring at ordinary times.
In the embodiment of the invention, when the power amplifier of transmitting set satisfies mismatch condition, adjust the input power of described power amplifier according to maximum wired analog transmissions power of described power amplifier under matching condition, to control the power output of described power amplifier; With respect to prior art for the technical scheme of introducing isolator in the transmitting set, when guaranteeing that wireless maximum power dissipation can not surpass wired maximum power dissipation, evaded the sensitiveness of product to isolator volume and cost, also reduce wired power consumption, avoided increasing power consumption and heating when mismatch not occurring at ordinary times.
The embodiment of the invention is applicable to that wireless terminal or other merge the transmitting set of class (FMC) product.Data service end product for high heat flux, mismatch can cause and occur the unusual high electric current that the design phase can't consider and evade in the actual use, the embodiment of the invention can prevent the user use in antenna unusual, as the unusual big electric current that antenna breaks, mismatch such as failure welding causes, thus product safety risk, the pernicious question of market that prevention may cause; Cell phone type product mismatch probability of happening height, the embodiment of the invention is evaded the power amplifier mismatch under weak signal can effectively reduce current drain, prolongs stand-by power consumption.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware embodiment, complete software embodiment or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form of the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is that reference is described according to flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make and carry out the sequence of operations step producing computer implemented processing at computer or other programmable devices, thereby be provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame in the instruction that computer or other programmable devices are carried out.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the mismatch processing method of a transmitting set power amplifier is characterized in that, this method comprises:
The power amplifier of determining transmitting set satisfies mismatch condition;
Between the antenna-matching circuit of described power amplifier and described transmitting set, enable isolator and carry out isolation processing;
When described power amplifier Satisfying Matching Conditions again, the described isolator of stopping using;
The power amplifier of described definite transmitting set satisfies mismatch condition, comprising:
Wireless real net operating current under the described transmitting set equal transmit power and wired simulation test electric current are compared; During greater than threshold value, determine that described power amplifier satisfies mismatch condition greater than wired simulation test electric current and the difference of the two at described wireless real net operating current;
Or, voltage standing wave ratio and the threshold value of described transmitting set compared; When the voltage standing wave ratio of described transmitting set surpasses threshold value, determine that described power amplifier satisfies mismatch condition;
Or, when satisfying following condition one of them or combination in any, determine that described power amplifier satisfies mismatch condition: the earphone of described transmitting set does not use, hands-free intercommunication pattern is not opened, detect described transmitting set by transducer when conversing is higher than threshold value near human body, wireless real net transmitting power.
2. the method for claim 1 is characterized in that, between the antenna-matching circuit of described power amplifier and described transmitting set, enables isolator and carries out isolation processing, comprising:
Be connected to the by-pass switch at described isolator two ends by disconnection, enable described isolator and carry out isolation processing.
3. the method for claim 1 is characterized in that, when described power amplifier Satisfying Matching Conditions again, the described isolator of stopping using comprises:
When the wireless real net transmitting power of described transmitting set is lower than threshold value, be connected to the by-pass switch at described isolator two ends by closure, the described isolator of stopping using.
4. the mismatch processing method of a transmitting set power amplifier is characterized in that, this method comprises:
Voltage standing wave ratio and the threshold value of described transmitting set are compared; When described voltage standing wave ratio surpasses threshold value, determine that the power amplifier of transmitting set satisfies mismatch condition; Or, operating current and the maximum complete machine operating current limit value of described transmitting set compared; When described operating current exceeds maximum complete machine operating current limit value, determine that described power amplifier satisfies mismatch condition;
Adjust the input power of described power amplifier according to maximum wired analog transmissions power of described power amplifier under matching condition, to control the power output of described power amplifier.
5. a transmitting set comprises power amplifier and antenna-matching circuit, it is characterized in that, also comprises:
Isolator is connected between power amplifier and the antenna-matching circuit, is used for carrying out isolation processing;
The coupling determination module is used for determining whether described power amplifier satisfies mismatch condition;
The isolated controlling module is used for enabling described isolator and carrying out isolation processing when definite described power amplifier satisfies mismatch condition; When described power amplifier Satisfying Matching Conditions again, the described isolator of stopping using;
Described transmitting set also comprises: current monitoring circuit, for detection of wireless real net operating current and wired simulation test electric current of described transmitting set; Described coupling determination module specifically is used for: the wireless real net operating current under the described transmitting set equal transmit power and wired simulation test electric current are compared; Wireless real net operating current under described equal transmit power during greater than threshold value, determines that described power amplifier satisfies mismatch condition greater than wired simulation test electric current and the difference of the two;
Or described transmitting set also comprises: standing wave detection circuit, and be used for that described transmitting set is carried out standing wave and detect, obtain the voltage standing wave ratio of described transmitting set; Described coupling determination module specifically is used for: described voltage standing wave ratio and threshold value are compared, when described voltage standing wave ratio surpasses threshold value, determine that described power amplifier satisfies mismatch condition;
Or, described coupling determination module specifically is used for: when satisfying following condition one of them or combination in any, determine that described power amplifier satisfies mismatch condition: the earphone of described transmitting set does not use, hands-free intercommunication pattern is not opened, detect described transmitting set by transducer when conversing is higher than threshold value near human body, wireless real net transmitting power.
6. transmitting set as claimed in claim 5 is characterized in that, also comprises:
Coupler, duplexer and radio-frequency (RF) switch; Wherein:
Described coupler links to each other with described isolator with described power amplifier respectively;
Described duplexer links to each other with the radio-frequency (RF) switch of described isolator and described transmitting set respectively;
Described radio-frequency (RF) switch links to each other with described antenna-matching circuit.
7. as each described transmitting set of claim 5 to 6, it is characterized in that, also comprise:
By-pass switch is connected to described isolator two ends;
Described isolated controlling module specifically is used for:
When definite described power amplifier satisfied mismatch condition, control disconnected described by-pass switch, enables described isolator and carries out isolation processing.
8. transmitting set as claimed in claim 7 is characterized in that, described isolated controlling module also specifically is used for:
When described power amplifier Satisfying Matching Conditions again, control closed described by-pass switch, the described isolator of stopping using.
9. the mismatch processing unit of a transmitting set power amplifier is characterized in that, this device comprises:
The standing wave detection module is used for that described transmitting set is carried out standing wave and detects, and obtains the voltage standing wave ratio of described transmitting set; Or the current monitoring module is used for described transmitting set is carried out current detecting, obtains the operating current of described transmitting set;
Determination module is used for described voltage standing wave ratio and threshold value are compared, and when described voltage standing wave ratio surpasses threshold value, determines that the power amplifier of transmitting set satisfies mismatch condition; Or, described operating current and maximum complete machine operating current limit value are compared, when described operating current exceeds maximum complete machine operating current limit value, determine that described power amplifier satisfies mismatch condition;
Power control module is for the input power of adjusting described power amplifier according to maximum wired analog transmissions power of described power amplifier under matching condition, to control the power output of described power amplifier.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102688785A CN101959294B (en) | 2010-08-27 | 2010-08-27 | Mismatching processing methods and device for power amplifier of wireless transmitter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102688785A CN101959294B (en) | 2010-08-27 | 2010-08-27 | Mismatching processing methods and device for power amplifier of wireless transmitter |
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| Publication Number | Publication Date |
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| CN101959294A CN101959294A (en) | 2011-01-26 |
| CN101959294B true CN101959294B (en) | 2013-09-11 |
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| CN2010102688785A Active CN101959294B (en) | 2010-08-27 | 2010-08-27 | Mismatching processing methods and device for power amplifier of wireless transmitter |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105676189A (en) * | 2015-12-18 | 2016-06-15 | 四川九洲电器集团有限责任公司 | Power transmitter |
| CN112152660B (en) * | 2020-09-25 | 2022-04-15 | Oppo（重庆）智能科技有限公司 | Control method and device of radio frequency circuit and electronic equipment |
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| US3928806A (en) * | 1974-11-08 | 1975-12-23 | Us Army | Power dividing and combining techniques for microwave amplifiers |
| CN1399813A (en) * | 2000-09-27 | 2003-02-26 | 三菱电机株式会社 | Method and circuit for distortion compensation and output control |
| CN1684531A (en) * | 2004-04-13 | 2005-10-19 | 徐平 | GSM/CDMA two-way duplex tower top amplifier |
| CN101730217A (en) * | 2009-11-02 | 2010-06-09 | 华为终端有限公司 | Improved radio frequency power control method and terminal |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09275351A (en) * | 1996-04-08 | 1997-10-21 | Matsushita Electric Ind Co Ltd | Plural-mode mobile radio equipment |
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|---|---|---|---|---|
| US3928806A (en) * | 1974-11-08 | 1975-12-23 | Us Army | Power dividing and combining techniques for microwave amplifiers |
| CN1399813A (en) * | 2000-09-27 | 2003-02-26 | 三菱电机株式会社 | Method and circuit for distortion compensation and output control |
| CN1684531A (en) * | 2004-04-13 | 2005-10-19 | 徐平 | GSM/CDMA two-way duplex tower top amplifier |
| CN101730217A (en) * | 2009-11-02 | 2010-06-09 | 华为终端有限公司 | Improved radio frequency power control method and terminal |
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| CN101959294A (en) | 2011-01-26 |
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Address after: 523808 Southern Factory Building (Phase I) Project B2 Production Plant-5, New Town Avenue, Songshan Lake High-tech Industrial Development Zone, Dongguan City, Guangdong Province Patentee after: Huawei Device Co., Ltd. Address before: 523808 Southern Factory Building (Phase I) Project B2 Production Plant-5, New Town Avenue, Songshan Lake High-tech Industrial Development Zone, Dongguan City, Guangdong Province Patentee before: HUAWEI terminal (Dongguan) Co., Ltd. |