CN203608164U - Multimode power amplifier and corresponding mobile communication terminal - Google Patents
Multimode power amplifier and corresponding mobile communication terminal Download PDFInfo
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- CN203608164U CN203608164U CN201320743824.9U CN201320743824U CN203608164U CN 203608164 U CN203608164 U CN 203608164U CN 201320743824 U CN201320743824 U CN 201320743824U CN 203608164 U CN203608164 U CN 203608164U
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Abstract
The utility mode discloses a multimode power amplifier which has a low power mode, a middle power mode and a high power mode. The multimode power amplifier comprises an adjusting control circuit, an AMP1, a shunting device, an AMP2, a low-power output match circuit, a middle-power output match circuit and a high-power output match circuit. When the multimode power amplifier is in the low power mode, the AMP1 is controlled by the adjusting control circuit to work in a first power mode and the shunting device is controlled to enable the output end of the AMP1 to be connected to the low-power output match circuit. When the multimode power amplifier is in the middle power mode, the AMP1 is controlled by the adjusting control circuit to work in a second power mode and the shunting device is controlled to enable the output end of the AMP1 to be connected to the middle-power output match circuit. When the multimode power amplifier is in the high power mode, the AMP1 is controlled by the adjusting control circuit to work in the second power mode, and the shunting device is controlled to enable the output end of the AMP1 to be connected to the AMP2 and enable the output end of the AMP2 to be connected with the input end of the high-power output match circuit. Thus, two power amplifying units are adopted to achieve the low power mode, the middle power mode and the high power mode, the occupied area of a chip is small, and the manufacturing cost is low.
Description
[technical field]
The utility model relates to IC design field, especially relates to a kind of multimode power amplifier and corresponding mobile communication terminal.
[background technology]
Modern mobile communcations system, particularly mobile phone, in order to extend the service time of lithium battery, increase the air time, reduces the electric current of power amplifier, and one of raising efficiency power amplifier is effective way.People have invented the method for much effectively raising the efficiency for this reason, as E class and F power-like amplifier.This power-like amplifier, approaches when saturated and can reach very high effective efficiency at power stage.
But in communication system, system does not need very high transmitting power sometimes, in order to make system have very high efficiency under back-off state, people have proposed multimode power amplifier ((Multi-Mode Power Amplifier).Multimode power amplifier is exactly according to communication system power demand, sets the size of transmitting power, makes it under back-off state, also can keep higher efficiency.Common described multimode power amplifier includes three kinds of mode of operations, be respectively low-power mode (low power mode, LPM), middle power mode (medium power mode, MPM), high-power mode (high power mode, HPM).Multimode power amplifier is widely used in 3G/4G mobile phone.
Fig. 1 shows a kind of typical multimode power amplifier in prior art.As shown in Figure 1, described multimode power amplifier comprises three power amplification paths, be respectively low-power amplification path, middle power amplification path and high power amplification path, on each power amplification path, include the first switching circuit, input matching circuit, power amplifier module (Q
l, Q
mor Q
h), output matching circuit and second switch circuit.In the time of low-power mode, make the conducting of low-power amplification path by controlling each switching circuit, other power amplification path cut-off, input radio frequency signal RF IN obtains the radio frequency output signal RF OUT after power amplification after low-power amplification path.In the time of middle power mode, make middle power amplification path conducting by controlling each switching circuit, other power amplification path cut-off, input radio frequency signal RF IN obtains the radio frequency output signal RF OUT after power amplification behind middle power amplification path.In the time of high-power mode, make the conducting of high power amplification path by controlling each switching circuit, other power amplification path cut-off, input radio frequency signal RF IN obtains the radio frequency output signal RF OUT after power amplification after high power amplification path.
Although this type of multimode power amplifier is the effective efficiency of improved system effectively, this power-like amplifier has following shortcoming: 1, need to be for the independent power amplification path of each mode development, and the design cycle is long, and development cost is high; 2, the multimode power amplifier of this type of framework needs the power amplification unit of three different capacities, and the area taking is larger; 3, the design of output matching circuit and debugging are very complicated, and R&D costs are high.4, under different capacity pattern, amplifier progression does not become, and power gain is not obviously distinguished under three power modes, requires very high to transceiver dynamic range.
Therefore, wish to propose a kind of improved multimode power amplifier and overcome the problems referred to above.
[utility model content]
One of technical problem that the utility model solves is to provide a kind of multimode power amplifier, and it occupies less area, and cost is lower.
Two of the technical problem that the utility model solves is to provide a kind of mobile communication terminal, and it adopts multimode power amplifier, and this multimode power amplifier occupies less area, and cost is lower.
In order to address the above problem, according to an aspect of the present utility model, the utility model provides a kind of multimode power amplifier, it has basic, normal, high three kinds of power modes, and it comprises adjusting control circuit, the first power amplification unit, shunt device, the second power amplification unit, low-power output matching circuit, middle power stage match circuit, high-power output match circuit that power is adjustable.The first power amplification unit has the first power mode and the second power mode, and wherein the power of the first power amplification unit under the first power mode is low compared with the power under the second power mode.At described multimode power amplifier during in low-power mode, described in described adjusting control circuit control, the first power amplification unit works under the first power mode, controls described shunt device simultaneously the output of the first power amplification unit is connected to the input of low-power output matching circuit.At described multimode power amplifier during in middle power mode, described in described adjusting control circuit control, the first power amplification unit works under the second power mode, controls described shunt device simultaneously the output of the first power amplification unit is connected to the input of middle power stage match circuit.At described multimode power amplifier during in high-power mode, described in described adjusting control circuit control, the first power amplification unit works under the second power mode, control the input that described shunt device is connected to the output of the first power amplification unit the second power amplification unit, the output of described the second power amplification unit is connected with the input of high-power output match circuit simultaneously.
Further, described shunt device comprises an input, the first output, the second output and the 3rd output, described input connects the output of the first power amplification unit, the first output is connected with the input of low-power output impedance match circuit, the second output is connected with the input of middle power stage impedance matching circuit, and the 3rd output is connected with the input of the second power amplification unit.Its input is selectively connected to the first output by the control signal of described shunt device based on described adjusting control circuit output, the second output and the 3rd output, at described multimode power amplifier during in low-power mode, described adjusting control circuit output control signal is connected to its first output to control the input of described shunt device to described shunt device, at described multimode power amplifier during in middle power mode, described adjusting control circuit output control signal is connected to its second output to control the input of described shunt device to described shunt device, at described multimode power amplifier during in high-power mode, described adjusting control circuit output control signal is connected to its 3rd output to control the input of described shunt device to described shunt device.
Further, described adjusting control circuit provides the first bias voltage and the second bias voltage selectively to the first power amplification unit, in the time the first bias voltage being provided to the first power amplification unit, the first power amplification unit works under the first power mode, in the time the second bias voltage being provided to the first power amplification unit, the first power amplification unit works under the second power mode.
Further, described adjusting control circuit can not give the first power amplification unit or bias voltage is provided the second power amplification unit so that they are in non operating state, at described multimode power amplifier during in low-power mode and middle power mode, the second power amplification unit is in non operating state described in described adjusting control circuit control.
Further, described middle power stage match circuit comprises the first front end match circuit, and its input is connected with an output of shunt device.Described high-power output match circuit comprises the second front end match circuit, and its input is connected with the output of the second power amplification unit.Described middle power stage match circuit and described high-power output match circuit also comprise a common rear end match circuit, the input of described rear end match circuit is connected with the output of the second front end match circuit with the output of the first front end match circuit, and the output of described rear end match circuit is as the output of described middle power stage match circuit and described high-power output match circuit.In the time of middle power mode, the output impedance in the common formation of the first front end match circuit and described rear end match circuit under power stage match circuit centering power mode is mated.In the time of high-power mode, the second front end match circuit and described rear end match circuit jointly form high-power output match circuit the output impedance under high-power mode are mated.
Further, described multimode power amplifier also includes: the switching device between the second front end match circuit and rear end match circuit, at described multimode power amplifier during in low-power mode and middle power mode, described adjusting control circuit is also controlled described switching device and is turn-offed so that the second front end match circuit and rear end match circuit are isolated, at described multimode power amplifier, during in high-power mode, described adjusting control circuit is also controlled described switching device conducting to be communicated with the second front end match circuit and rear end match circuit.
Further, adjusting control circuit, the first power amplification unit, shunt device, the second power amplification unit, low-power output matching circuit, the first front end match circuit, the second front end match circuit and switching device are integrated in same wafer jointly, and described rear end match circuit is wafer external circuit.
According to an aspect of the present utility model, the utility model provides a kind of mobile communication terminal, and it comprises multimode power amplifier.Multimode power amplifier, it has basic, normal, high three kinds of power modes, and it comprises adjusting control circuit, the first power amplification unit, shunt device, the second power amplification unit, low-power output matching circuit, middle power stage match circuit, high-power output match circuit that power is adjustable.The first power amplification unit has the first power mode and the second power mode, and wherein the power of the first power amplification unit under the first power mode is low compared with the power under the second power mode.At described multimode power amplifier during in low-power mode, described in described adjusting control circuit control, the first power amplification unit works under the first power mode, controls described shunt device simultaneously the output of the first power amplification unit is connected to the input of low-power output matching circuit.At described multimode power amplifier during in middle power mode, described in described adjusting control circuit control, the first power amplification unit works under the second power mode, controls described shunt device simultaneously the output of the first power amplification unit is connected to the input of middle power stage match circuit.At described multimode power amplifier during in high-power mode, described in described adjusting control circuit control, the first power amplification unit works under the second power mode, control the input that described shunt device is connected to the output of the first power amplification unit the second power amplification unit, the output of described the second power amplification unit is connected with the input of high-power output match circuit simultaneously.
Compared with prior art, in multimode power amplifier in the utility model, owing to having introduced the first adjustable power amplification unit of shunt device and power, therefore adopt two power amplification units can realize low, in and a Senior Three power mode, chip occupying area is little, and manufacturing cost is lower.
About other objects of the present utility model, feature and advantage, describe in detail in embodiment below in conjunction with accompanying drawing.
[accompanying drawing explanation]
In conjunction with reference to accompanying drawing and ensuing detailed description, the utility model will be easier to understand, wherein structure member corresponding to same Reference numeral, wherein:
Fig. 1 is the structured flowchart of a kind of typical multimode power amplifier of the prior art;
Fig. 2 is the structured flowchart of the first embodiment of the multimode power amplifier in the utility model.
[embodiment]
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Detailed description of the present utility model mainly presents by program, step, logical block, process or other symbolistic descriptions, the running of the technical scheme in its direct or indirect simulation the utility model.Under those of skill in the art uses these descriptions herein and states the work essence of effectively introducing them to the others skilled in the art in affiliated field.
Alleged " embodiment " or " embodiment " refer to that the special characteristic relevant to described embodiment, structure or characteristic at least can be contained at least one implementation of the utility model herein.Different local in this manual " in one embodiment " that occur also nonessentially all refer to same embodiment, must not be yet with other embodiment mutually exclusive separately or select embodiment.In addition, represent sequence of modules in method, flow chart or the functional block diagram of one or more embodiment and revocablely refer to any particular order, also not forming restriction of the present utility model.
Fig. 2 shows the block diagram of the first embodiment 200 of the multimode power amplifier in the utility model.Described multimode power amplifier 200 has basic, normal, high three kinds of power modes, such as, in the time of low-power mode, its power output Po≤7dBm, in the time of middle power mode, its power output is approximately 7dBm<Po≤17dBm, and in the time of high-power mode, its power output is approximately 17dBm<Po≤28dBm.
As shown in Figure 2, described multimode power amplifier 200 comprises that the first adjustable power amplification unit 210(of power is called for short AMP1), shunt device 220, the second power amplification unit 230 (being called for short AMP2), adjusting control circuit 240, low-power output matching circuit 250, middle power stage match circuit 260 and high-power output match circuit 270.The first power amplification unit 210 has the first power mode and the second power mode, wherein the power of the first power amplification unit 210 under the first power mode is low compared with the power under the second power mode, such as in one example, under the first power mode, the power output of this first power amplification unit 210 is≤7dBm, under the second power mode, the power output of this first power amplification unit 210 is less than or equal to 17dBm for being greater than 7dBm.
At described multimode power amplifier 200 during in low-power mode, described adjusting control circuit 240 is controlled described the first power amplification unit 210 and is worked under the first power mode, controls described shunt device 220 simultaneously the output of the first power amplification unit 210 is connected to the input of low-power output matching circuit 250.Now, the input received RF input signal RF IN of the first power amplification unit 210, the radio frequency output signal RF OUT after the output power output of low-power output matching circuit 250 is amplified.
At described multimode power amplifier 200 during in middle power mode, described adjusting control circuit 240 is controlled described the first power amplification unit 210 and is worked under the second power mode, controls described shunt device 220 simultaneously the output of the first power amplification unit 210 is connected to the input of middle power stage match circuit 260.Now, the input received RF input signal RF IN of the first power amplification unit 210, the radio frequency output signal RF OUT after the output power output of middle power stage match circuit 260 is amplified.
At described multimode power amplifier 200 during in high-power mode, described adjusting control circuit 240 is controlled described the first power amplification unit 210 and is worked under the second power mode, control the input that described shunt device is connected to the output of the first power amplification unit 210 the second power amplification unit 230, the output of described the second power amplification unit 230 is connected with the input of high-power output match circuit 270 simultaneously.Now, the input received RF input signal RF IN of the first power amplification unit 210, the radio frequency output signal RF OUT after the output power output of high-power output match circuit 270 is amplified.
Like this, in the utility model owing to having introduced the first adjustable power amplification unit 210 of shunt device 220 and power, therefore adopt two power amplification units can realize low, in and a Senior Three power mode, chip occupying area is little, manufacturing cost is lower.
In one embodiment, described shunt device 220 comprises an input Fin, the first output Fo1, the second output Fo2 and the 3rd output Fo3.Described input connects the output of the first power amplification unit, the first output Fo1 is connected with the input of low-power output impedance match circuit 250, the second output Fo2 is connected with the input of middle power stage impedance matching circuit 260, and the 3rd output Fo3 is connected with the input of the second power amplification unit 230.Its input is selectively connected to the first output, the second output and the 3rd output by the control signal that described shunt device 240 is exported based on described adjusting control circuit 240.At described multimode power amplifier 200, during in low-power mode, described adjusting control circuit 240 is exported control signal and is connected to its first output to described shunt device 220 to control the input of described shunt device 220.At described multimode power amplifier 200, during in middle power mode, described adjusting control circuit 240 is exported control signal and is connected to its second output to described shunt device 220 to control the input of described shunt device 220.At described multimode power amplifier 200, during in high-power mode, described adjusting control circuit 240 is exported control signal and is connected to its 3rd output to described shunt device 220 to control the input of described shunt device 220.
In one embodiment, described adjusting control circuit 240 provides the first bias voltage Vbias1 and the second bias voltage Vbias2 selectively to the first power amplification unit 210, in the time the first bias voltage Vbias1 being provided to the first power amplification unit 210, the first power amplification unit works under the first power mode, in the time the second bias voltage Vbias2 being provided to the first power amplification unit 210, the first power amplification unit works under the second power mode.Same, described adjusting control circuit 240 can also provide bias voltage to the second power amplification unit 230 so that it is in running order.Certainly, described adjusting control circuit 240 also can select not to the first power amplification unit 210 or bias voltage is provided the second power amplification unit 230 so that they are in non operating state, such as, at described multimode power amplifier 200 during in low-power mode and middle power mode, described adjusting control circuit 240 can be controlled described the second power amplification unit in non operating state, so not only can reduce power consumption, but also can significantly reduce power gain, reduce the dynamic range requirement to transceiver.
In a preferred embodiment, described middle power stage match circuit 260 comprises the first front end match circuit 261, its input is connected with the second output Fo2 of shunt device 220, described high-power output match circuit 270 comprises the second front end match circuit 271, and its input is connected with the output of the second power amplification unit 230.Described middle power stage match circuit 260 and described high-power output match circuit 270 also comprise a common rear end match circuit 280, the input of described rear end match circuit 280 is connected with the output of the second front end match circuit 271 with the output of the first front end match circuit 261, the output of described rear end match circuit 280, as the output of described middle power stage match circuit 260 and described high-power output match circuit 270, is exported the radiofrequency signal RF OUT after amplifying.In the time of middle power mode, the output impedance in the first front end match circuit 261 and the common formation of described rear end match circuit 280 under power stage match circuit 260 centering power modes is mated.In the time of high-power mode, the common high-power output match circuit 270 that forms of the second front end match circuit 271 and described rear end match circuit 280 mates the output impedance under high-power mode.Because rear end match circuit 280 has been converted into the system impedance of 50 ohm one lower than the median of 50 ohm, therefore 261 of front end match circuits need to do a lower impedance transformation ratio and can obtain the required impedance of middle power mode; Equally, 271 of front end match circuits need to do a lower impedance transformation ratio can obtain the required impedance of high-power mode, it should be noted that match circuit impedance transformation is than less, and Insertion Loss is less.Meanwhile, be so also more conducive to the debugging of follow-up output impedance match circuit, shorten the R&D cycle.
In the time of specific implementation, described low-power output matching circuit, the first front end match circuit, the second front end match circuit, rear end match circuit can be the arbitrary structures matching networks such as T-shaped matching network, PI type, LC, CL, are determined on a case-by-case basis.
In a preferred embodiment, the high-power output match circuit 270 of described multimode power amplifier 200 also includes the switching device 272 between the second front end match circuit 271 and rear end match circuit 280.At described multimode power amplifier 200 during in high-power mode, described adjusting control circuit 240 is also controlled described switching device 272 conductings to be communicated with the second front end match circuit 272 and rear end match circuit 280, to make the common high-power output match circuit 270 that forms of the second front end match circuit 272 and rear end match circuit 280.At described multimode power amplifier 200 during in low-power mode and middle power mode, described adjusting control circuit 240 can also be controlled described switching device 272 and turn-off that the second front end match circuit 271 is isolated with rear end match circuit 280, can avoid like this low-power output matching and middle power stage coupling to produce harmful effect, in the exploitation debug process of multimode power amplifier, can make the debugging of output matching impedance more simple.
In an embodiment in the utility model, can the switching device in similar switching device 272 be set between the first front end match circuit 261 and rear end match circuit 280, this can reduce manufacturing cost.Switching device in similar switching device 272 is set between the first front end match circuit 261 and rear end match circuit 280, can causes cost to rise, and the debugging work in R&D process of giving brings benefit limited.Same, in an embodiment of the present utility model, also can between low-power output matching circuit 250 and rear end match circuit 280, switching device be set, this can reduce manufacturing cost equally.
Adopt existing technology; incompatible due to technique; conventionally adjusting control circuit 240 can be arranged at respectively in different wafers from the first power amplification unit, the second function amplification unit and output matching circuit; so not only manufacturing cost is high; and can take larger chip area and package dimension, be unfavorable for integrated.
An emphasis in the utility model, advantage or feature are: adopt BiFET (dipole field-effect transistor) technique, this technique is by GaAs HBT(Heterojunction Bipolar Transistor) technique and pHEMT (Pseudomorphic High Electron Mobility Transistor) technique is integrated in above same wafer, make this technique there is high-power component simultaneously, the function of logical device and switching device, can be by described adjusting control circuit 240, the first power amplification unit 210, shunt device 220, the second power amplification unit 230, low-power output matching circuit 250, the first front end match circuit 261, the second front end match circuit 271 and switching device 272 are integrated in same wafer jointly, described rear end match circuit 280 is wafer external circuit.Can significantly reduce like this manufacturing cost, and can make integrated level very high.
The implication that is connected or connects in the utility model not only comprises and directly joins or connects, also comprises and is indirectly connected or connects, such as via connected after a resistance, functional circuit." low-power ", " middle power " are herein all relative concepts with " high power ", " high power " represents that the power of power in its power ratio is high, " low-power " represents the low of power in its power ratio, they also can be called as respectively " the first power ", " the second power " and " the 3rd power ", such as " low-power mode " being called to " the first power mode ", low-power output matching circuit is called to " first power stage match circuit " etc.
The utility model is carried out to the enough detailed description with certain particularity above.Under those of ordinary skill in field should be appreciated that, the description in embodiment is only exemplary, under the prerequisite that does not depart from true spirit of the present utility model and scope, make change and all should belong to protection range of the present utility model.The utility model scope required for protection is to be limited by described claims, rather than limited by the foregoing description in embodiment.
Claims (8)
1. a multimode power amplifier, it has basic, normal, high three kinds of power modes, it is characterized in that, it comprises adjusting control circuit, the first power amplification unit, shunt device, the second power amplification unit, low-power output matching circuit, middle power stage match circuit, high-power output match circuit that power is adjustable
The first power amplification unit has the first power mode and the second power mode, and wherein the power of the first power amplification unit under the first power mode is low compared with the power under the second power mode;
At described multimode power amplifier during in low-power mode, described in described adjusting control circuit control, the first power amplification unit works under the first power mode, controls described shunt device simultaneously the output of the first power amplification unit is connected to the input of low-power output matching circuit;
At described multimode power amplifier during in middle power mode, described in described adjusting control circuit control, the first power amplification unit works under the second power mode, controls described shunt device simultaneously the output of the first power amplification unit is connected to the input of middle power stage match circuit;
At described multimode power amplifier during in high-power mode, described in described adjusting control circuit control, the first power amplification unit works under the second power mode, control the input that described shunt device is connected to the output of the first power amplification unit the second power amplification unit, the output of described the second power amplification unit is connected with the input of high-power output match circuit simultaneously.
2. multimode power amplifier according to claim 1, it is characterized in that, described shunt device comprises an input, the first output, the second output and the 3rd output, described input connects the output of the first power amplification unit, the first output is connected with the input of low-power output impedance match circuit, the second output is connected with the input of middle power stage impedance matching circuit, and the 3rd output is connected with the input of the second power amplification unit
Its input is selectively connected to the first output, the second output and the 3rd output by the control signal of described shunt device based on described adjusting control circuit output,
At described multimode power amplifier, during in low-power mode, described adjusting control circuit output control signal is connected to its first output to control the input of described shunt device to described shunt device,
At described multimode power amplifier, during in middle power mode, described adjusting control circuit output control signal is connected to its second output to control the input of described shunt device to described shunt device,
At described multimode power amplifier, during in high-power mode, described adjusting control circuit output control signal is connected to its 3rd output to control the input of described shunt device to described shunt device.
3. multimode power amplifier according to claim 1, it is characterized in that, described adjusting control circuit provides the first bias voltage and the second bias voltage selectively to the first power amplification unit, in the time the first bias voltage being provided to the first power amplification unit, the first power amplification unit works under the first power mode, in the time the second bias voltage being provided to the first power amplification unit, the first power amplification unit works under the second power mode.
4. multimode power amplifier according to claim 1, it is characterized in that, described adjusting control circuit can not give the first power amplification unit or bias voltage is provided the second power amplification unit so that they are in non operating state, at described multimode power amplifier during in low-power mode and middle power mode, the second power amplification unit is in non operating state described in described adjusting control circuit control.
5. multimode power amplifier according to claim 1, is characterized in that, described middle power stage match circuit comprises the first front end match circuit, and its input is connected with an output of shunt device,
Described high-power output match circuit comprises the second front end match circuit, and its input is connected with the output of the second power amplification unit,
Described middle power stage match circuit and described high-power output match circuit also comprise a common rear end match circuit, the input of described rear end match circuit is connected with the output of the second front end match circuit with the output of the first front end match circuit, the output of described rear end match circuit is as the output of described middle power stage match circuit and described high-power output match circuit
In the time of middle power mode, the output impedance in the common formation of the first front end match circuit and described rear end match circuit under power stage match circuit centering power mode is mated;
In the time of high-power mode, the second front end match circuit and described rear end match circuit jointly form high-power output match circuit the output impedance under high-power mode are mated.
6. multimode power amplifier according to claim 5, is characterized in that, it also includes: the switching device between the second front end match circuit and rear end match circuit,
At described multimode power amplifier, during in low-power mode and middle power mode, described adjusting control circuit is also controlled described switching device and is turn-offed so that the second front end match circuit and rear end match circuit are isolated,
At described multimode power amplifier, during in high-power mode, described adjusting control circuit is also controlled described switching device conducting to be communicated with the second front end match circuit and rear end match circuit.
7. multimode power amplifier according to claim 6, it is characterized in that, adjusting control circuit, the first power amplification unit, shunt device, the second power amplification unit, low-power output matching circuit, the first front end match circuit, the second front end match circuit and switching device are integrated in same wafer jointly, and described rear end match circuit is wafer external circuit.
8. a mobile communication terminal, is characterized in that, it comprises the multimode power amplifier as described in as arbitrary in claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320743824.9U CN203608164U (en) | 2013-11-21 | 2013-11-21 | Multimode power amplifier and corresponding mobile communication terminal |
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|---|---|---|---|
| CN201320743824.9U CN203608164U (en) | 2013-11-21 | 2013-11-21 | Multimode power amplifier and corresponding mobile communication terminal |
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| CN203608164U true CN203608164U (en) | 2014-05-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580610A (en) * | 2013-11-21 | 2014-02-12 | 无锡中普微电子有限公司 | Multi-mode power amplifier and corresponding mobile communication terminal |
| CN104485907A (en) * | 2015-01-03 | 2015-04-01 | 广州钧衡微电子科技有限公司 | High-efficiency multimode radio frequency power amplifier |
-
2013
- 2013-11-21 CN CN201320743824.9U patent/CN203608164U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580610A (en) * | 2013-11-21 | 2014-02-12 | 无锡中普微电子有限公司 | Multi-mode power amplifier and corresponding mobile communication terminal |
| CN103580610B (en) * | 2013-11-21 | 2016-03-16 | 无锡中普微电子有限公司 | Multimode power amplifier and corresponding mobile communication terminal |
| CN104485907A (en) * | 2015-01-03 | 2015-04-01 | 广州钧衡微电子科技有限公司 | High-efficiency multimode radio frequency power amplifier |
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