JP2000349566A - Transmission power amplifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress increase of a loss from the output of a main amplifier to a transmission signal output terminal and reduction of the efficiency of the transmission power amplifier relating to the loss resulting in reducing the power consumption of an entire base station. SOLUTION: A 2nd mixer 12 that is inserted between the output terminal 200 and a 1st mixer 11 that mixes the output of a distortion amplifier and the output signal of a main amplifier adds a distortion signal that is amplified by a distortion amplifier, a variable attenuator and a variable phase shifter and whose phase is adjusted to the signal outputted from the main amplifier via the 1st synthesizer 11 in a way of canceling the distortion signal component.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to information communication technology, and more particularly, to an improvement in a transmission signal or transmission power amplifier.

[0002]

2. Description of the Related Art In mobile communication in which communication is performed using electromagnetic waves, a limited frequency is repeatedly used efficiently.
In order to increase the subscriber capacity accommodated by the system, as shown in the conceptual diagram of FIG. 11, the reach of radio waves emitted by one base station is localized by sharpening the directivity of the antenna, and spatially. A system called the cellular system that reuses the same frequency is used.

[0003] In the current cellular mobile communication system, the reach of radio waves emitted from a base station is several km due to the demand for miniaturization of terminals, the amount of information transmission required by the system, and the spatial attenuation characteristics of electromagnetic waves. The frequency used is in the range of several hundred MHz to several GHz, and the radiated power of one terminal is several hundred mW to about 2 W. In such a situation, in order for one base station to support tens to hundreds of subscribers, an average transmission power of tens to hundreds of W is required as the output of the transmission power amplifier of the base station.

Further, in order to realize various mobile communication services, digital communication systems are currently in use.
In this case, since the modulation method is phase / amplitude modulation, a high linearity is required for the transmission power amplifier.

[0005]

In order to compensate for the non-linearity of a semiconductor device which realizes such a power amplifier, the efficiency of the power amplifier cannot be generally increased, and the power of the power amplifier is several hundred W to several hundred W at a saturation output. A value for KW is required.

FIG. 12 shows a schematic configuration of a base station. It is desirable that the transmission power amplifier is located near the antenna. If the antenna is installed at a height of 100 m, it is adjacent to an indoor base station tens of meters above the ground. When power is transmitted from the installed transmission power amplifier, a loss of about 5 to 6 dB usually occurs due to the loss of the high-frequency cable, and it is necessary to increase the output of the transmission power amplifier to about 5 times.

On the other hand, a high gain is required for an antenna in order to localize radio waves radiated from a base station within a service area of one base station. To narrow the transmission output to a service area of about 3 to 10 km as in the current cellular system, the antenna gain needs to be about 10 to 16 dBi.

The antenna can achieve a gain of about 2 dBi with a single element. To realize a high gain of 10 to 16 dBi, an array antenna technique for increasing the gain by arranging a single element is used. 10-16d
In order to realize a gain of about Bi, an array of about 8 to 12 elements is required.

[0009] Further, in normal system operation, the frequency utilization efficiency of the entire system is improved by adjusting the area served by the base station, that is, the area for localizing radio waves in accordance with the increase or decrease in the number of subscribers. For this reason, an antenna applied to a base station needs to tilt its main beam downward, and at the same time, a function of changing its tilt angle is required.

[0010] In order to meet the above demands for higher transmission power and higher linearity of the transmission power amplifying apparatus, a power amplifier based on a linear compensation method called feedforward is used in the prior art. The feed forward method is described in "H. Seidel, Bell System Technical Journal Vol. 50, No. 9, pp. 2879-29.
16, 1971 November "A Microwave Feedforwar
d Experimental ".

That is, a transmission signal to be amplified is partially branched before input to the high power amplifier, a part of the signal amplified by the power amplifier is also branched, and the previously branched input signal and the amplified signal Is canceled using an appropriate phase shifter / attenuator, and only the distortion component generated in the amplifier is extracted. The extracted distortion component is amplified by an amplifier having good linearity called an error amplifier, and the amplified distortion signal is inverted with the output signal of the power amplifier by using an appropriate phase shifter / attenuator and a combiner. The addition is performed in phases to cancel the distortion component of the output signal of the power amplifier.

When this method is implemented by the prior art, since the combiner for combining the output signal of the power amplifier and the distortion component signal is of a transmission line type, it is necessary to secure isolation between the respective signals. An essential problem arises in that a part of the signal of the signal is lost by the terminating resistor. Considering the total power, the power of the power amplifier output signal is much larger than the power of the distortion component signal (the ratio is usually 30 to 50 dB in the current technology). To reduce the loss,
The amount of coupling of the distortion component signal of the transmission line type combiner to the output signal of the power amplifier is reduced (the ratio is usually 10 to 20 dB in the current technology).

Accordingly, the power of the distortion component signal required for the input terminal of the transmission line type combiner must be amplified by a value corresponding to the coupling ratio. As a result, it is necessary to increase the gain of the error amplifier. An increase in the power consumption of the amplifier is caused, the efficiency of the entire transmission power amplifying device decreases,
There is a problem that the power consumption of the transmission power amplifier increases.

[0014] In recent years, with the increase in the number of terminals supported by one base station, there has been a demand for a single transmission power amplifying apparatus to amplify signals of a plurality of different frequencies at once. In order to respond to this request, the linearity of the transmission power amplifying device has become more demanding than before, and the feedforward amplifier of the prior art needs to multiplex the feedforward loop. Along with this, the number of the transmission line type combiners described above increases, and a problem arises when the loss caused by the transmission line type combiner further reduces the efficiency of the transmission power amplifying device. .

Further, in the multiplexing of the feedforward loop, since the distortion signal and the output signal from the power amplifier are added in opposite phases, the necessary delay amount of the delay line arranged at the output section of the power amplifier is required. As the physical length of the delay line increases, the amount of attenuation of the large power output signal from the power amplifier in the delay line increases, and the efficiency of the transmission power amplifier decreases.

[0016]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a feed-forward amplifier having a high output, which is capable of efficiently realizing a linear amplifier by using a semiconductor element which originally has nonlinearity. From the amplifier output terminal to the transmission signal output terminal, by one transmission line type combiner,
Combines the signal and the distortion signal.

As shown in FIG. 2, in the conventional feedforward amplifier, for example, when the loop of the feedforward amplifier is double, the input signal is amplified by the main amplifier 21 and the distortion partially branched by the distributor 2 is removed. A distortion signal is obtained from the difference of the output of the main amplifier including the input signal and the input signal branched by the distributor 1 by the combiner 11. The distortion signal is amplified by the distortion amplifier 22, the variable attenuator 32, and the variable phase shifter 42, the phase is adjusted, and then added by the combiner 12 to cancel the distortion component of the signal output from the main amplifier.

The signal whose distortion has been canceled to a certain extent is partially branched by the distributor 4 and is divided by the combiner 13 into the divider 3.
The difference between the input signal and the input signal is calculated, and the included distortion signal is extracted.

The extracted distortion signal is supplied to the distortion amplifier 2
After being amplified by the variable attenuator 3 and the variable attenuator 34 and the variable phase shifter 44 and the phase is adjusted, the signal is added by the combiner 17 so as to cancel the distortion component of the signal output from the main amplifier.

The variable attenuator and the variable phase shifter are configured to minimize the distortion power output result of the detection circuit 51 for a signal obtained by branching a part of the transmission output signal from the distributor 5 directly connected to the transmission signal output terminal. Adjusted.

In the present invention, the distortion signal amplified and phase-adjusted by the distortion amplifier 23, the variable attenuator 34, and the variable phase shifter 44 is provided between the output of the distortion amplifier 22 and the synthesizer 12. 14 (FIG. 1)
The distortion signal component is added to the signal output from the main amplifier via the combiner 12 so as to cancel the distortion signal component.

In the present invention, only one transmission line type combiner is required between the output of the main amplifier and the output terminal of the transmission signal, and the loss of the combiner which is inevitable in the prior art can be eliminated. In particular, in the feedforward amplifier having a multi-loop configuration as in this example, the power amplifier required for the loops after the double loop has a very small power to handle the signal, so that it is small and low power consumption, and has high gain and high power. An amplifier having good linearity can be easily realized. As a result, the power consumption of the entire base station including the transmission power amplifier to which the present invention is applied is reduced.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail. FIG. 1 is a diagram showing a circuit block of a transmission power amplifier according to the present invention.

The third distributor 3 is connected to the transmission signal input terminal 100.
Are coupled to the first output of the third distributor 3, and the input of the first distributor 1 is subsequently coupled to the first output of the first distributor 1. The input of the first amplifier 21 is coupled, the output of the first amplifier 21 is subsequently coupled to the input of the second distributor 2, and the first output of the second distributor 2 is subsequently coupled. Is coupled to the first input terminal of the second combiner 12, and subsequently the input terminal of the fourth distributor 4 is coupled to the output terminal of the second combiner 12, The first output terminal is coupled to the transmission signal output terminal 200, the second output terminal of the first distributor 1 is coupled to the second input terminal of the first combiner 11, The first input of the combiner 11 is coupled to the second output of the second distributor 2, followed by the output of the first combiner 11 to the input of the second amplifier 22, And the output of the second amplifier 22 Is coupled to a first input terminal of a fourth combiner 14, an output terminal of the fourth combiner 14 is coupled to a second input terminal of the second combiner 12, and the third distributor 3 Second
The second input terminal of the third combiner 13 is coupled to the output terminal of
A first input terminal of the third combiner 13 is connected to a fourth distributor 4.
Of the third amplifier 23 is connected to the output terminal of the third combiner 13, and the output terminal of the third amplifier 23 is connected to the fourth combiner 14. Is connected to a second input terminal.

According to this embodiment, the distortion signal amplified by the third amplifier 23, which is a distortion amplifier, is output to the output of the second amplifier 22, which is a distortion amplifier, and to the second combiner 12
Is added to the signal output from the first amplifier 21 as the main amplifier via the second synthesizer 12 so as to cancel the distortion signal component. Therefore, there is only one transmission line type combiner between the output of the main amplifier and the output terminal of the transmission signal, and the efficiency of the transmission power amplifier caused by the existence of a plurality of transmission line type combiners which is inevitable in the prior art. The reduction can be greatly reduced.

FIG. 3 is a circuit block diagram of another embodiment of the transmission power amplifier according to the present invention. The difference from the embodiment of FIG. 1 is that a new first variable attenuator 31, a first variable phase shifter 41 and a second variable attenuator 32, a second variable phase shifter 42 and a third variable attenuator are newly added. 33, a third variable phase shifter 43 and a fourth variable attenuator 34, a fourth variable phase shifter 4
4, a fifth distributor 5, a detector 51, and a control circuit 60.

That is, the first variable attenuator 31 and the first variable phase shifter 41 are inserted in series between the first output terminal of the first distributor 1 and the input terminal of the first amplifier 21. And
The second variable attenuator 31 and the second variable phase shifter 42 are inserted in series between the output terminal of the first combiner 1 and the input terminal of the second amplifier 22, and a fourth distributor 4 The third variable attenuator 33 and the third variable phase shifter 43 are inserted in series between a second output terminal of the third combiner 13 and a first input terminal of the third combiner 13. 13, the fourth variable attenuator 34 and the fourth variable phase shifter 44 are inserted in series between the output terminal of the third amplifier 23 and the input terminal of the third amplifier 23,
A fifth distributor 5 is inserted between the output terminal of the fourth distributor 4 and the transmission signal output terminal 200, and the input terminal of the fifth distributor 5 is connected to the first output terminal of the fourth distributor 4, and 5 has a first output terminal coupled to the transmission signal output terminal 200, a second output terminal of the fifth distributor 5 coupled to an input terminal of the detector 51, and The output is the input of the control circuit 60.

The control circuit 60 includes the first variable attenuator 3
1. First variable phase shifter 41 and second variable attenuator 3
2, the second variable phase shifter 42 and the third variable attenuator 3
3. Third variable phase shifter 43 and fourth variable attenuator 3
4. The fourth variable phase shifter 44 is controlled.

According to this embodiment, since the distortion power component of the output of the transmission power amplifier can be adaptively suppressed by automatic control, there is an effect of improving the performance stability of the transmission power amplifier.

FIG. 4 is a circuit block diagram of another embodiment of the transmission power amplifier according to the present invention. The difference from the embodiment of FIG. 3 is that the fifth distributor 5 is inserted immediately after the output terminal of the third combiner 13, and the input terminal of the fifth distributor 5 is connected to the third terminal.
And the first output terminal of the fifth distributor 5 is connected to the input terminal of the third amplifier 23 via the fourth variable attenuator 34 and the fourth variable phase shifter 44. And the second output terminal of the fifth distributor 5 is connected to the detection circuit 51.
, The input of the control circuit 60, and the first output terminal of the fourth distributor 4 is directly coupled to the transmission power output terminal 200.

According to this embodiment, the fifth distributor 5 as a branch circuit can be eliminated from the signal path from the output of the first power amplifier 21 as the main amplifier to the transmission signal output terminal 200. As compared with the third embodiment, there is an effect of improving the efficiency of the transmission power amplifier.

FIG. 5 is a circuit block diagram of another embodiment of the transmission power amplifier according to the present invention. 3 is different from the embodiment of FIG. 3 in that a first delay line 71, a second delay line 72, a third delay line 73, and a fourth delay line 74 are provided. Between the first output terminal of the distributor 2 and the first input terminal of the second combiner 12,
A second delay line 72 is inserted between the second output terminal of the first distributor 1 and the first input terminal of the first combiner 11, and
The third delay line 73 and the fourth delay line 74 are inserted in series between the second output terminal of the third distributor 3 and the first input terminal of the third combiner 13.

According to the present embodiment, the delay amount of the first to third power amplifiers is set to be equal to the delay amount of the first to third power amplifiers in comparison with the embodiment of FIG.
In addition, since the signal can be canceled by the fourth delay line, the frequency band of the transmission power amplifier can be increased, in other words, there is an effect that the output fluctuation with respect to the frequency of the transmission power amplifier can be suppressed.

FIG. 6 is a circuit block diagram of another embodiment of the transmission power amplifier according to the present invention. The difference from the embodiment of FIG. 5 is that the first delay line 71, the second delay line 72, the third delay line 73, and the fourth delay line 74 are respectively provided with a first delay filter 81 And the second delay filter 82, the third delay filter 83, and the fourth delay filter 84.

According to this embodiment, the transmission distance of the high-frequency signal required to cancel the delay of the first to fourth power amplifiers is shortened, so that the loss due to the transmission distance can be reduced, and This has the effect of increasing the output and efficiency of the transmission power amplifier.

FIG. 7 is a circuit block diagram of another embodiment of the transmission power amplifier according to the present invention. The difference from the embodiment of FIG. 5 is that the fourth delay line 74 is eliminated and the third distributor 3 is connected to the output terminal of the second delay line 72 and the second input of the first combiner 11. And the input end of the third divider 3 is coupled to the output end of the second delay line 72, and the first output end of the third divider 3 is connected to the first end. The second output terminal of the third distributor 3 is coupled to the second input terminal of the third combiner 11 via the third delay line 73.
And the transmission power input terminal 100 is directly coupled to the input terminal of the first distributor 1.

According to the present embodiment, the number of delay lines can be reduced as compared with the embodiment of FIG. 5, which is effective in reducing the size and weight of the transmission power amplifier.

FIG. 8 is a circuit block diagram of another embodiment of the transmission power amplifier according to the present invention. The difference from the embodiment of FIG. 6 is that the first delay filter 81, the second delay filter 82, the third delay filter 83, the first distributor 1, the second distributor 2, the first combiner 11, the fourth combiner 14, the second amplifier 22, the second variable attenuator 32, and the second variable phase shifter 42 are deleted, and the third distributor 13
Is coupled to the input terminal of the first amplifier 21 via the first variable attenuator 31 and the first variable phase shifter 41, and the output terminal of the first amplifier 21 is connected to the second combiner 12. Combined with the first input, the output of the third amplifier 23 is coupled with the second input of the second combiner 12.

In the present embodiment, since the first loop of the feedforward is eliminated, the power to be handled by the third power amplifier, which is a distortion amplifier, is relatively larger than that in the embodiment of FIG. Therefore, the power that can be handled by the transmission power amplifier according to the present embodiment decreases,
When the power to be handled by the transmission power amplifier can be small, the circuit configuration is simplified, and there is an effect of reducing the cost of the transmission power amplifier by reducing the number of components.

FIG. 9 is a circuit block diagram of another embodiment of the transmission power amplifier according to the present invention. The difference from the embodiment of FIG. 8 is that the fifth distributor 5 is inserted immediately after the output terminal of the third combiner 13 and the input terminal of the fifth distributor 5 is connected to the output terminal of the third combiner 13. And a first output terminal of the fifth distributor 5 is coupled to an input terminal of the third amplifier 23 via a fourth variable attenuator 34 and a fourth variable phase shifter 44, The fifth output terminal of the fifth distributor 5 is input to the control circuit 60 via the detection circuit 51, and the first output terminal of the fourth distributor 4 is directly coupled to the transmission power output terminal 200.

The effect of this embodiment is similar to the effect of the embodiment of FIG. 4 with respect to the embodiment of FIG.

FIG. 10 is a circuit block diagram of another embodiment of the transmission power amplifier according to the present invention. The difference from the embodiment of FIG. 3 is that the sixth distributor 6 and the second detection circuit
2, the sixth distributor 6 is inserted immediately after the output terminal of the third combiner 13, and the input terminal of the sixth distributor 6 is connected to the output terminal of the third combiner 13, The first output terminal of the sixth distributor 6 is coupled to the input terminal of the third amplifier 23 via the fourth variable attenuator 34 and the fourth variable phase shifter 44, and the sixth output terminal of the sixth distributor 6 The second output terminal is a second detection circuit 52
And the second input of the control circuit 60 via the

In the configuration of this embodiment, the second detection circuit 52
Control that minimizes the detected power of the transmission power amplifier and control that minimizes the detected power of the distortion component of the output power of the final transmission power amplifier can be alternated in a time series. It has the effect of improving.

[0044]

According to the present invention, only one transmission line type synthesizer is required between the output of the main amplifier and the output terminal of the transmission signal. It is possible to suppress an increase in the loss of the path from the main amplifier output to the transmission signal output terminal and a decrease in the efficiency of the transmission power amplifier related to the loss due to the increase in the transmission line type combiner. As a result, the power consumption of the entire base station including the transmission power amplifier to which the present invention is applied is reduced.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram of an embodiment of a transmission power amplifier according to the present invention.

FIG. 2 is a circuit block diagram of a double-loop feedforward power amplifier that is a conventional transmission power amplifier.

FIG. 3 is a circuit block diagram of another embodiment of the transmission power amplifier according to the present invention.

FIG. 4 is a circuit block diagram of another embodiment of the transmission power amplifier according to the present invention.

FIG. 5 is a circuit block diagram of another embodiment of the transmission power amplifier according to the present invention.

FIG. 6 is a circuit block diagram of another embodiment of the transmission power amplifier according to the present invention.

FIG. 7 is a circuit block diagram of another embodiment of the transmission power amplifier according to the present invention.

FIG. 8 is a circuit block diagram of another embodiment of the transmission power amplifier according to the present invention.

FIG. 9 is a circuit block diagram of another embodiment of the transmission power amplifier according to the present invention.

FIG. 10 is a circuit block diagram of another embodiment of the transmission power amplifier according to the present invention.

FIG. 11 is a diagram showing an operation mode of a cellular system to which a transmission power amplifier according to the present invention is applied.

FIG. 12 is a diagram showing a base station configuration of a cellular system to which a transmission power amplifier according to the present invention is applied.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... 1st distributor, 2 ... 2nd distributor, 3 ... 3rd distributor, 4 ... 4th distributor, 5 ... 5th distributor, 6 ... 6th distributor, 11 ... 1st synthesizer, 12... 2nd synthesizer, 1
3 ... third combiner, 14 ... fourth combiner, 21 ... first amplifier, 22 ... second amplifier, 23 ... third amplifier, 3
1 ... first variable attenuator, 32 ... second variable attenuator, 33
... a third variable attenuator, 34 ... a fourth variable attenuator, 41 ...
First variable phase shifter, 42 second variable phase shifter, 43 third variable phase shifter, 44 fourth variable phase shifter, 51 detection circuit, 52 second detection circuit, 60 control Circuit, 71 ...
A first delay line, 72 a second delay line, 73 a third delay line, 74 a fourth delay line, 81 a first delay filter,
82: second delay filter, 83: third delay filter, 84: fourth delay filter, 100: transmission signal input terminal, 200: transmission signal output terminal.

Continued from the front page F-term (reference) 5J090 AA04 AA41 CA21 CA22 CA35 CA36 FA08 FA11 FA20 GN02 GN05 GN06 GN07 HN03 HN08 KA15 KA16 KA23 KA26 KA55 MA11 MA14 MA20 NN04 NN16 SA14 TA01 5J091 AA04 CA21 KA21 KA26 KA55 MA11 MA14 MA20 SA14 TA01 5J092 AA04 AA41 CA21 CA22 CA35 CA36 FA08 FA11 FA20 GR00 KA15 KA16 KA23 KA26 KA55 MA11 MA14 MA20 SA14 TA01 VL08

Claims (11)

[Claims] 1. A first amplifier, a first divider, a second divider, a first combiner, and a second combiner, and a second amplifier, a third divider, and a fourth combiner. , A third combiner, and a fourth combiner, the input end of the third splitter being coupled to the transmission signal input terminal, and subsequently the first output end of the third splitter. Is coupled to the input of the first divider, followed by the first output of the first divider coupled to the input of the first amplifier, and the second amplifier is coupled to the output of the first amplifier. The inputs of the distributor
Subsequently, the first input of the second combiner is coupled to the first output of the second divider, and the input of the fourth distributor is subsequently coupled to the output of the second combiner. And the first of the fourth distributors
Is coupled to the transmission signal output terminal, the second output of the first distributor is coupled to the second input of the first combiner, and the first of the first combiner is coupled to the first output of the first combiner. The input is coupled to the second output of the second divider, followed by the input of the second amplifier to the output of the first combiner, and then to the output of the second amplifier. A first input of a fourth combiner is coupled, an output of the fourth combiner is coupled to a second input of a second combiner, and a second output of a third divider. The second input of the third combiner is coupled to the end, the first input of the third combiner is coupled to the second output of the fourth distributor, and then the third combiner. An input terminal of a third amplifier is coupled to an output terminal of the combiner, and an output terminal of the third amplifier is coupled to a second input terminal of a fourth combiner. 2. The transmission signal amplifier according to claim 1, wherein:
A first variable attenuator, a first variable phase shifter and a second variable attenuator, a second variable phase shifter and a third variable attenuator, a third variable phase shifter and a fourth variable attenuator, A variable phase shifter, a fifth splitter, a detector and a control circuit, wherein the first splitter is connected in series between a first output end of the first splitter and an input end of the first amplifier. A variable attenuator and the first variable phase shifter are inserted, and the second variable attenuator and the second variable phase shifter are connected in series between an output terminal of a first combiner and an input terminal of a second amplifier. The third variable attenuator and the third variable phaser are inserted in series between the second output terminal of the fourth distributor and the first input terminal of the third combiner. The fourth variable attenuator and the fourth variable phase shifter are inserted in series between the output terminal of the third combiner and the input terminal of the third amplifier. Input of the fifth divider is inserted the fifth divider between the output terminal transmission signal output terminal 4
The first output of the fifth divider is coupled to a transmission signal output terminal, and the second output of the fifth divider is coupled to the detector. Coupled to the input end, the output of the detector becomes the input of the control circuit, the control circuit,
A first variable attenuator, a first variable phase shifter and a second variable attenuator, a second variable phase shifter and a third variable attenuator, a third variable phase shifter and a fourth variable attenuator, A transmission power amplifier for controlling the variable phase shifter according to claim 4. 3. The transmission power amplifier according to claim 2, wherein:
A fifth divider is inserted immediately after the output of the third combiner, the input of the fifth divider being coupled to the output of the third combiner, and the first of the fifth divider being coupled to the output of the third combiner. Is connected to the input terminal of the third amplifier via the fourth variable attenuator and the fourth variable phase shifter, and the second output terminal of the fifth distributor is connected to the control circuit via the detection circuit. A transmission power amplifier as an input, wherein a first output of a fourth divider is directly coupled to a transmission power output terminal. 4. The non-transmission power amplifier according to claim 2, further comprising a first delay line, a second delay line, a third delay line, and a fourth delay line, wherein the first delay line is provided. A second delay line is inserted between the first output of the second divider and the first input of the second combiner, the second delay line being connected to the second output of the first divider and to the first output. And a third delay line and a fourth delay line are connected in series with the second input terminal of the third distributor.
The transmission power amplifier is inserted between the output terminal of the third combiner and the first input terminal of the third combiner. 5. The transmission power amplifier according to claim 4, wherein
The first delay line, the second delay line, the third delay line, and the fourth delay line are respectively a first delay filter, a second delay filter, a third delay filter, and a fourth delay line. A transmission power amplifier, wherein the transmission power amplifier is replaced by a delay filter. 6. The transmission power amplifier according to claim 4, wherein:
A fourth delay line is deleted, a third divider is inserted between an output of the second delay line and a second input of the first combiner, and the third divider is Is coupled to the output of the second delay line, the first output of the third divider is coupled to the second input of the first combiner, and A second output of the combiner is coupled to a second input of the third combiner via a third delay line, and a transmit power input is directly coupled to an input of the first distributor. And the transmission power amplifier. 7. The transmission power amplifier according to claim 4, wherein the first delay line, the second delay line, and the third delay line, or the first delay filter, the second delay filter, and the second delay filter. 3 delay filters, 1st divider, 2nd
, The first combiner, the fourth combiner, the second amplifier, the second variable attenuator and the second variable phase shifter are eliminated, and the first output of the third divider is changed to the first output. , And the output of the first amplifier is coupled to the first input of the second combiner via the variable attenuator and the first variable phase shifter. A transmit power amplifier, wherein an output of the amplifier is coupled to a second input of a second combiner. 8. The transmission power amplifier according to claim 7, wherein:
A fifth divider is inserted immediately after the output of the third combiner, the input of the fifth divider being coupled to the output of the third combiner, and the first of the fifth divider being coupled to the output of the third combiner. Is connected to the input terminal of the third amplifier via the fourth variable attenuator and the fourth variable phase shifter, and the second output terminal of the fifth distributor is connected to the control circuit via the detection circuit. A transmission power amplifier as an input, wherein a first output of a fourth divider is directly coupled to a transmission power output terminal. 9. The transmission power amplifier according to claim 2, further comprising a sixth divider and a second detection circuit, wherein the sixth divider is a third combiner. And the input of the sixth divider is coupled to the output of the third combiner and the first output of the sixth divider is connected to the fourth variable attenuator and A fourth variable phase shifter is coupled to the input terminal of the third amplifier, and the second output terminal of the sixth divider becomes the second input terminal of the control circuit via the second detection circuit. Characteristic transmission power amplifier. 10. The transmission power amplifier according to claim 1, wherein the control circuit includes a first variable attenuator and a first variable phase shifter such that a distortion power output of the detection circuit is minimized. And a second variable attenuator, a second variable phaser and a third variable attenuator, a third variable phaser and a fourth variable attenuator.
A variable power attenuator and a fourth variable phase shifter. 11. The transmission power amplifier according to claim 9, wherein the control circuit includes a first variable attenuator and a first variable phase shifter such that the power output of the detection circuit of the second detection circuit is minimized. And a control circuit controlling the second variable attenuator, the second variable phase shifter, the third variable attenuator, and the third variable phase shifter so that the distortion power output of the detection circuit is minimized.
A first variable attenuator, a first variable phase shifter and a second variable attenuator, a second variable phase shifter and a third variable attenuator, a third variable phase shifter and a fourth variable attenuator, A transmission power amplifier for controlling the variable phase shifter according to claim 4.