JPH03232305A - Constant amplitude wave synthesizing amplifier - Google Patents

Abstract

PURPOSE:To utilize a non-linear amplifier with high efficiency by feeding back the output of the first amplifier to the input side of the second amplifier, and feeding back the output of the second amplifier to the input side of the first amplifier. CONSTITUTION:The outputs of amplifiers 1 and 2 are respectively fed back by a feedback loop whose gain is '1' through attenuators 5 and 6 to the input sides of the others, then oscillation occurs. This oscillation is made stable in a certain state. In the stable oscillation state, the output of an adder 3 is an output synthesizing the vectors of an input wave X and an orthogonal wave Y, and this synthesized output comes to a constant amplitude wave A=X+Y equipped with the constant amplitude. Similarly, the output of an adder 4 is an output synthesizing the vectors of the input wave X and an orthogonal wave -Y and comes to a constant amplitude wave B=X-Y equipped with the constant amplitude. Therefore, for signals to be inputted to the amplifiers 1 and 2, the envelopes are the constant amplitude waves A and B equipped with the constant amplitude. Thus, it is not necessary to use linear amplifiers for the amplifiers 1 and 2, and the non-linear amplifier with high efficiency such as a C-level amplifier can be utilized.

Description

[Detailed description of the invention] [Summary I Regarding a T=INC type constant amplitude wave synthesis amplifier.

The purpose of this project is to reduce power consumption, downsize, and operate at high speed in constant-amplitude wave synthesis amplifiers.

1st. A first constant amplitude wave generation circuit comprising a second amplifier and an analog circuit that combines the amplified output of the second amplifier and a human signal wave to generate a first constant amplitude wave and inputs the generated first constant amplitude wave to the first amplifier. a second constant amplitude wave generation circuit comprising an analog circuit that combines the amplified output of the first amplifier and the input signal wave to generate a second constant amplitude wave and inputs the generated second constant amplitude wave to the second amplifier; ．． and a combining circuit that combines the amplified outputs of the second amplifiers to generate an output signal wave.

[Industrial Application Field] The present invention is directed to LIN C (Linear Amplifier)
ification with Non1inear C
This invention relates to a components 1 type constant amplitude wave synthesis amplifier.

The constant amplitude wave synthesis amplifier is used in 9 For example, mobile speed radio equipment,
This is a low-distortion, high-efficiency power amplifier that is applied to various communication devices such as multiplex radio equipment, satellite communication radio equipment, and broadcasting equipment. There is a need for this constant amplitude wave synthesis amplifier to be realized with low power consumption and a small-scale circuit configuration.

[Prior Art] Conventionally, a constant amplitude wave synthesis amplifier using the LINC method is known as a power amplifier that can achieve low distortion and high efficiency. The principle of this constant amplitude wave-synthesizing amplifier was proposed by Nori, C., and COX at Bell Laboratories, and was published in the IEEE.
It is disclosed in C0M-22, P4O10, etc. Also as an application example.

The method of Tomisato et al. is disclosed in Japanese Patent Application Laid-Open No. 1-284106.

FIG. 16 shows an example of the configuration of a conventional constant amplitude wave synthesis amplifier. In the same figure, 61 is a constant amplitude wave addition circuit, which is composed of a digital signal processing circuit, and calculates a quadrature wave Y such that the composite wave with the signal wave input by 9 people has a constant amplitude. By combining the signal wave X and the orthogonal wave Y, two constant amplitude waves A and B with constant envelope and equal amplitude are generated and output. Note that the capital letters X, Y, A, and B represent vector quantities including phase.

62.63 are two constant amplitude waves A of the constant amplitude wave addition circuit 61
, B separately, and a highly efficient nonlinear amplifier such as a class 0 amplifier is used.

64 is a synthesis circuit which synthesizes the constant amplitude waves kA and kB amplified by nine amplifiers 62 and 63 to generate an output wave kX as the amplified output of the input wave X.

This conventional constant amplitude wave synthesis amplifier converts an input wave X into two constant amplitude waves A and B using a constant amplitude wave addition circuit 61.
Amplifiers 62 and 63 amplify each, and the amplified waves kA,
By combining kB in a combining circuit 64, an output wave kX, which is an amplified output of a single input wave X, is obtained.

In this constant amplitude wave synthesis amplifier, the amplifier 62.6
3 only amplifies the constant amplitude waves A and B with a constant envelope, so there is no need to use a linear amplifier, and a highly efficient nonlinear amplifier such as a class 0 amplifier can be used. Since the original signal can be restored by the synthesis circuit 64, it is possible to perform amplification with less distortion and good linearity even though it is a nonlinear amplifier. In this way, the constant amplitude wave synthesis amplifier can realize a high efficiency, low distortion amplifier using a nonlinear amplifier.

[Problems to be Solved by the Invention] Generally, in a conventional constant amplitude wave synthesis amplifier, a constant amplitude wave calculation circuit 61 that generates two constant amplitude waves A and B from an input wave X is used.
is constructed using a digital signal processing circuit.

However, when a digital signal processing circuit is used, there are problems in that the constant amplitude wave calculation circuit consumes a lot of power, cannot keep up with high-speed signal processing, and further increases the circuit scale.

For this reason, conventional constant-amplitude wave synthesis amplifiers have amplification power consumption that is sufficiently large compared to that of digital signal processing circuits, and can therefore be used in cases where the power consumption in this digital signal processing circuit can be ignored, or where there is no size limit. Its use is limited to devices that transmit low-speed signals. To solve the above problems, it is necessary to reduce the power consumption of semiconductors, increase their speed,
We must also keep pace with advances in semiconductor technology such as ultra-LSI technology.

The present invention has been made in view of these technical problems, and its purpose is to reduce the power consumption of a constant amplitude wave synthesis amplifier and to reduce the size of nine circuits.

and to achieve high-speed operation.

[Means for Solving the Problems] FIGS. 1 to 4 are diagrams each illustrating the principle of the present invention.

As one form of the constant amplitude wave synthesis amplifier according to the present invention, as shown in FIG. Second amplifier 41
．． 42, and a first constant amplitude wave generation circuit 43 consisting of an analog circuit that combines the amplified output of the second amplifier 42 and the input signal wave to generate a first constant amplitude wave and inputs it to the first amplifier 41. and a second constant amplitude wave generation circuit 44 consisting of an analog circuit that combines the amplified output of the first amplifier 41 and the input signal wave to generate a second constant amplitude wave and manually inputs it to the second amplifier 42. , 1st. It includes a combining circuit 45 that combines the amplified outputs of the second amplifiers 41 and 42 to generate an output signal wave.

Another form of the constant amplitude wave synthesis amplifier according to the present invention is an analog circuit that combines an input signal wave and an auxiliary wave to generate two constant amplitude waves of constant amplitude, as shown in FIG. A constant amplitude wave generation circuit 46 consisting of a constant amplitude wave generation circuit 46, two amplifiers 41 and 42 that separately amplify two constant amplitude waves output from the constant amplitude wave generation circuit 46, and these two amplifiers 4.
1. A combining circuit 47 that combines the amplified outputs of 42 to generate an output signal wave and an output auxiliary wave, and 9 an auxiliary wave feedback circuit that feeds back the output auxiliary wave of the combining circuit 47 to the input side of the constant amplitude wave generation circuit 46. 48.

Another form of the constant amplitude wave synthesis amplifier according to the present invention is an analog circuit that synthesizes an input signal wave and an auxiliary wave to generate two constant amplitude waves of constant amplitude, as shown in FIG. a constant amplitude wave generation circuit 46 consisting of a constant amplitude wave generation circuit 46, two amplifiers 41 and 42 that separately amplify two constant amplitude waves output from the constant amplitude wave generation circuit 46, and two amplifiers 41.
42 amplified outputs to generate an output signal wave and an output auxiliary wave; and an auxiliary wave feedback circuit 48 that feeds back the output auxiliary wave of the 9 synthesis circuit 47 to the input side of the constant amplitude wave generation circuit 46. Then, when the magnitude of the input signal wave is small, a second auxiliary wave is generated from this input signal wave, and the constant amplitude wave generation circuit 46
An auxiliary liquid generation circuit 49 is provided.

As shown in FIG. 4, the constant amplitude wave combining amplifier according to the present invention includes, in each of the above embodiments, two second amplifiers 51. 52 and these 1st. second amplifier 51.5
The device further includes a second synthesis circuit 53 that synthesizes the constant amplitude waves amplified in step 2 to generate an output signal wave.

[Function 1] In the constant amplitude wave synthesis amplifier of the form shown in Fig. 1, the first
The output of the amplifier 41 is fed back to the input side of the second amplifier 42 via the second constant amplitude wave generation circuit 44, and
The output of the amplifier 42 is fed back to the input side of the first amplifier 41 via the first constant amplitude wave generation circuit 43. This stabilizes the circuit in a certain oscillation state. In this stable state,
The signal output from the first and second constant amplitude wave generation circuits 43 and 44 is a constant amplitude wave whose envelope has a constant amplitude.

Therefore, it is possible to use highly efficient nonlinear amplifiers as the amplifiers 41 and 42, and the circuit that generates this constant amplitude wave can be configured with an analog circuit, resulting in lower power consumption, smaller size, and higher speed of the 9 circuits. It is possible to make it operational.

Also in the constant amplitude wave synthesis amplifier of the form shown in FIG.
8 to the input side of the constant amplitude wave generation circuit 46, a closed loop is formed with respect to the auxiliary wave.
This puts the circuit in an oscillating state. Also in this case,
The signal output from the constant amplitude wave generation circuit 46 in a stable oscillation state becomes a constant amplitude wave.

In the constant amplitude wave synthesis amplifier of the form shown in FIG. 3, when the magnitude of the input signal wave is small, the second auxiliary wave is generated from the auxiliary wave generation circuit 49 and the constant amplitude wave generation circuit 46 is manually operated. This prevents the amplifier of the form shown in FIG. 2 from becoming unstable when the level of the human input signal wave is small.

In the constant amplitude wave synthesis amplifier of the form shown in FIG. 4, highly efficient amplification is achieved by amplifying the constant amplitude wave to obtain an output wave using amplifiers 51 and 52 in a separate system from the circuit system including the closed loop. It makes it possible.

[Example] The present invention will be described in detail below with reference to nine drawings. In addition,
In the following description, it is assumed that the same reference numerals represent the same circuit components throughout the figures.

A constant amplitude wave synthesis amplifier as an embodiment of the present invention is a fifth embodiment of the present invention.
As shown in the figure. In FIG. 5, ■ and 2 are amplifiers for the amplification degree, and each has a constant amplitude wave A.

B is input. A highly efficient nonlinear amplifier such as a class C amplifier can be used as the amplifier 1.2. The amplified output kA of the amplifier 1 is inputted to the attenuator 5 and the input side terminal 71 of the in-phase hybrid circuit 7, and the amplified output kB of the amplifier 2 is inputted to the attenuator 6 and the other input side terminal 72 of the in-phase hybrid circuit 7. .

Attenuators 5 and 6 are circuits that attenuate the input signal by a factor of 1/1, and the output signal of attenuator 5 is input to adder 4, while the output signal of attenuator 6 is input to adder 3. Ru.

An input wave X as a human input signal is input to the adder 3.4, and the adder 3 adds this input wave X and the amplified output kB of the amplifier 2 via the attenuator 6 to generate a constant amplitude wave A. The adder 4 adds the input wave X and the amplified output kA of the amplifier 1 via the attenuator 5 to generate a constant amplitude wave B, which is input to the amplifier It is composed of These adders 3.4 can be constructed from analog circuits such as hybrid circuits.

The in-phase hybrid circuit 7 is a circuit that branches the signal input to each input terminal 71, 72 into two and outputs it to the output terminals 73, 74 in the same phase, and the output terminal 73 side has a constant amplitude wave kA/
An output wave kX which is a combination of 2 and kB/2 is output. This output wave kX is amplified twice as much as the input wave X. Further, the output on the output terminal 74 side is terminated via the terminating resistor 21.

The operation of this embodiment circuit will be explained below with reference to FIGS. 6 and 7. Here, in FIG. 7, the state of each part signal in the circuit of the embodiment is represented as a vector.

Now, with respect to the human power wave X, an orthogonal wave Y is assumed such that the vector composite wave with this input wave X has a constant amplitude. The amplitude of the vector composite wave of the human power wave On the other hand, the orthogonal wave Y has the persistence (
b) It can be decided to follow the above.

Now, in this example circuit, the outputs of amplifiers 1 and 2 are fed back to the other input side through attenuators 5 and 6, respectively, with the gain of the feedback loop being 1. Therefore, the example circuit causes oscillation. It is expected that the oscillation will stabilize in a certain state.

Here, when the magnitude of the input wave is 2X, the magnitude of the signal at each part of the example circuit in a stable oscillation state is as follows:
When shown using the above-mentioned imaginary orthogonal wave Y, it becomes as shown in FIG.

That is, the output of adder 3 is (x+y), the output of amplifier 1 is k (X+Y), and the output of adder 4 is (x-y
), k (X-Y) at the output of amplifier 2, (-x-y) at the output of attenuator 5, (-X+Y) at the output of attenuator 6
, 2kX at the output terminal 73 of the in-phase hybrid circuit 7, and in this state the circuit oscillates and stabilizes. Further, the phase relationship of the signals at each part is as shown in FIG.

Thus, in the oscillation stable state of the example circuit.

The output of the adder 3 is a vector composite output of the input wave X and its orthogonal wave Y, and this composite output becomes a constant amplitude wave A having a constant amplitude (that is, A=X+Y) as explained in FIG.

Similarly, the output of the adder 4 becomes a vector composite output of the input wave X and the orthogonal wave -Y.

This composite output is also a constant amplitude wave B (i.e. B
=X-Y).

Therefore, the signal input to the amplifier 1.2 becomes constant amplitude waves A and B with constant amplitude envelopes, so there is no need to use a linear amplifier as the amplifier 1.2. It becomes possible to use an amplifier.

Amplified output kA, kB respectively amplified by amplifier 1.2
are synthesized by the in-phase hybrid circuit 7. In this case, at the output terminal 73, the components of the orthogonal wave Y cancel each other out, and an output wave 2kX, which is a signal component of the input wave, is obtained.

In this way, in this embodiment, the constant amplitude wave input to the amplifier 1.2 can be generated by a simple analog circuit.

Various modifications are possible in implementing the invention. FIG. 8 shows another embodiment of the present invention as such a modification. The difference from the previous embodiment is that the amplified output of the amplifier l is fed back to the input side of the amplifier 2 via an attenuator 9 and a subtracter 8, while the amplified output of the amplifier 2 is is fed back to the input side of the amplifier 1 via the 1/2 attenuator 10 and the adder 3, and the hybrid circuit to which the amplified output of the amplifier 1.2 is manually input is constituted by an anti-phase hybrid circuit 11. That is what we are doing.

When the circuit is configured in this way and one circuit is in a stable oscillation state, the output of adder 3 is (y+x) and the output of adder 8 is (
Y-X) [i.e. -B], the output of amplification i1 is k (Y
+X), the output of the amplifier 2 is k(Y-X), and the output terminal l13 of the anti-phase hybrid circuit is 2kX.

Therefore, also in the case of this embodiment, since the signal output from the adder 3.4 becomes a constant amplitude wave, a nonlinear amplifier can be used as the amplifier 1.2, and a circuit for generating a constant amplitude wave can be used. It can be configured with analog circuits.

FIG. 9 shows yet another embodiment of the invention. In FIG. 9, an input wave X is guided to an input side terminal 121 of the 90-degree hybrid circuit 12, and an auxiliary wave Y as a feedback signal is guided to the other input side terminal 122. The output signals from the output terminals 123 and 124 of the 90 degree hybrid circuit 12 are respectively connected to the 90 degree hybrid circuit 1 via an amplifier 1.2.
3 is input to the input side children 131 and 132.

The output signal from the output terminal 133 of the 90 degree hybrid circuit 13 is terminated via the terminating resistor 21, and
The signal is fed back to the input side 122 of the 90 degree hybrid circuit 12 via the /kM attenuator 14 and the 90 degree phase shifter 15. On the other hand, an output wave kX, which is an amplified output of the input wave X, is output from the output terminal 134.

Here, the 90 degree hybrid circuit 12 has each input side child 121.
, 122, and outputs the same direction output terminal (between terminals 121 and 123, or between terminals 122 and 122).
4), and the cross-direction output terminal (terminal 12).
90 between terminals 1 and 124 or between terminals 122 and 123)
The output terminals 123 and 124 each output a degree phase shift component, and the two input side terminals 121
．． 122, one of them is shifted in phase by 90 degrees, vector-combined, and output. The 90 degree hybrid circuit 13 also has the same function.

The operation of this embodiment circuit will be explained below with reference to FIG. Here, in FIG. 10, the states of signals at each part of the circuit of the embodiment shown in FIG. 9 are represented as vectors.

This embodiment circuit also has an output terminal 1 of the hybrid circuit 13.
The output signal of 33 is fed back as an auxiliary wave Y to the input side terminal 122 of the hybrid circuit 12 via the attenuator 14 and the phase shifter 15, so that the 9 circuits reach a stable oscillation state. Note that the gain of the feedback loop regarding the auxiliary wave Y in this case is l.

Assume now that a signal wave with a size of 2x is input as an input wave. This input wave 2X is input to the input side terminal 121 of the hybrid circuit 12.

On the other hand, the output wave 2kY from the output terminal 133 of the hybrid circuit 13 is applied to the input side terminal 122, and the output wave 2kY from the output terminal 133 of the hybrid circuit 13 is connected to the attenuator 14 and the phase shifter 1.
5, it is fed back as an auxiliary wave 2Y. In addition,
The phase of this auxiliary wave 2Y is rotated by 190 degrees by the phase shifter 15, so that it is in the same phase as the human power wave 2X.

In the 90 degree hybrid circuit 12, at the output terminal 123 side, the input wave X and the auxiliary wave Y whose phase has been rotated by 90 degrees are vector-combined to generate and output a constant amplitude wave A.

Further, at the output terminal 124, a constant amplitude wave B is generated and outputted by vector-combining the input wave X obtained by rotating the phase of the input wave X by 90 degrees and the auxiliary wave Y. These constant amplitude waves A, B
The amplitude of its envelope is constant and equal.

These constant amplitude waves A and B are then amplified by amplifiers 1 and 2, respectively, to obtain amplified outputs kA and kB, which are 90
The signals are respectively input to input side terminals 131 and 132 of the hybrid circuit 13.

The 90-degree hybrid circuit 13 synthesizes the input amplified outputs kA and kB. That is, at the output terminal 133, the amplified output kB whose phase is rotated by 90 degrees with the amplified output kA/2 is output.
/2 is synthesized. Thereby, the signal components of the human power wave X are canceled out, and the signal component of the auxiliary wave Y is extracted and outputted as an output auxiliary wave 2kY.

On the other hand, at the output terminal i34, the amplified output kA/2 obtained by rotating the amplified output kA by 90 degrees and the amplified output kB/2 are combined, thereby canceling out the signal component of the auxiliary wave Y.
The signal component of the input wave X is extracted and output as an output wave 2kX.

As described above, the output auxiliary wave 2kY extracted at the output terminal 133 is fed back to the input side child 122 of the hybrid circuit 12 as the auxiliary wave 2Y via the attenuator 14 and the phase shifter 15.

With this configuration, the circuit configuration for generating the constant amplitude waves A and B can be configured with a simple analog circuit such as a hybrid circuit.

It is possible to achieve smaller circuit scale, lower power consumption, and faster operation.

FIG. 11 shows yet another embodiment of the present invention. This embodiment is a modification of the embodiment shown in FIG. 9 described above.

That is, in the case of the embodiment circuit shown in FIG. 9, when the human power wave X becomes small, the output signal from the hybrid circuit 13 becomes unstable, and there is a possibility that one circuit will not operate stably. The embodiment circuit shown in FIG. 11 takes measures against such a case.

In FIG. 11, the input wave It is configured to be input as an auxiliary wave. Further, the output auxiliary wave kX from the hybrid circuit 13 is also applied to the attenuator 14. Phase shifter 15. Input side child 122 via adder 17
It is now entered into

The approximate solution circuit 16 includes a limiter amplifier 161 and a subtracter 162.
The input wave X is passed through a limiter amplifier 161, and the limiter amplifier 161
By subtracting the output of and the input wave X using the subtracter 162,
An approximate solution for the magnitude of the orthogonal wave Y is calculated.

In other words, as shown in Fig. 12, a characteristic (b) that approximates the one-circle characteristic (a) is realized using an analog circuit, and the input wave
This is to approximately create orthogonal wave Y to . That is, since the input/output characteristics of the limiter amplifier 161 are as shown in FIG. 13 (c), when the output of the limiter amplifier 161 is subtracted from the input wave X by the subtracter 162,
Characteristics as shown in FIG. 12 (b) are obtained. Note that the approximate solution output from this approximate solution circuit 16 is in phase with the input wave X.

By providing such an approximate solution circuit 16, even when the magnitude of the input wave X becomes small, the input side child 12211! Since the auxiliary wave Y of a certain magnitude is given from the approximate solution circuit 16, the oscillation operation of the nine circuits becomes stable.

FIG. 14 shows another embodiment of the present invention, which is a further improvement of the circuit of the embodiment shown in FIG. 11 described above. This embodiment circuit differs from the circuit described above in that the approximate solution output from the approximate solution circuit 16 is input to the adder 17 via an attenuator 19, and the auxiliary output is fed back from the phase shifter 15. The wave is also input to the adder 17 via the attenuator 18. Here, the attenuator 18 increases the input signal by α times,
The attenuator 19 has a function of attenuating the input signal by a factor of (l-α), where α is a positive number satisfying α≦1.

In this example circuit, by setting the coefficient a to an appropriate value determined by the stable state of oscillation, the oscillation state of the nine circuits can be stabilized, and in that case, the distortion occurring in the output wave Y can be reduced. I can do it.

In the embodiments of FIGS. 10 and 11 described above, the circuit is used to generate an auxiliary signal to be applied to the hybrid circuit 12 when the input wave X is small.

Although the approximation circuit 16 generates a signal wave that approximates the orthogonal wave of the input wave X, the present invention is not limited to this. In other words, all that is required is to be able to give the input side terminal 122 of the hybrid circuit 12 some kind of signal that will spark one oscillation when the input wave X is at a small level.9For example, as shown in FIG. ) may use an auxiliary wave according to input/output characteristics as shown in FIG. However, this auxiliary wave must have the same frequency as the input wave.

FIG. 14 shows still another embodiment of the present invention. This embodiment uses constant amplitude waves A, B (or constant amplitude waves kA,
kB) are taken out and amplified by nonlinear amplifiers B22 and B22 with an amplification degree of m different from the amplifier 1.2, and the amplified outputs mA and mB are combined by the hybrid circuit 24 to amplify the input wave X. The output wave rnX& is obtained.

In this embodiment, the input waves can be amplified with high efficiency by providing amplifiers 22 and 23 separately from the amplifier circuit including the feedback loop as in each of the above-described embodiments.

[Effect of the invention 1] According to the present invention, the circuit for generating a constant amplitude wave can be configured with a small, low power, high-speed operation analog circuit, so it is possible to construct a circuit for generating a constant amplitude wave using a small size, low power, high speed operation analog circuit. Compared to amplitude wave synthesis amplifiers, it can achieve lower power consumption, smaller size, and faster operation.

[Brief explanation of drawings]

FIGS. 1 to 4 are diagrams each explaining the principle of a constant amplitude wave synthesis amplifier according to the present invention. FIG. 5 is a block diagram showing a constant amplitude wave synthesis amplifier as an embodiment of the present invention. FIG. 6 and FIG. 7 are diagrams for explaining the operation of the embodiment. FIG. 8 is a block diagram showing another embodiment of the present invention. FIG. 9 is a block diagram showing still another embodiment of the present invention. FIG. 10 is a diagram for explaining the operation of the embodiment circuit of FIG. 9. FIG. 11 is a block diagram showing still another embodiment of the present invention. FIG. 12 is an input/output characteristic diagram of the approximate solution circuit in the embodiment of FIG. 11. FIG. 13 is an input/output characteristic diagram of the limiter amplifier of the approximate solution circuit. FIG. 14 is a block diagram showing still another embodiment that is an improvement on the embodiment of FIG. 11. FIG. 15 is a block diagram showing still another embodiment of the present invention,
and FIG. 16 is a block diagram showing a conventional constant amplitude wave synthesis amplifier. In fig. 1.2, 22.23...Nonlinear amplifier 3.4.17.
...Adder 5.6.9, 10.14...Attenuator 7...In-phase hybrid circuit 11...Negative-phase hybrid circuit 12.13...90 degree hybrid circuit 15--
90 degree phase shifter 16... - Approximate solution circuit 18. 19... Attenuator 21 -... Terminating resistor 24... Hybrid circuit Present invention L (Δ Tsumesu, explanation diagram No. 2, figure 9 water prisoners (兓→waste, ■! explanatory diagram No. 3), the present invention (ξ Δ 4 苧, Chi 1 v - Katsumuki Kuni) No. 4 Figure 4 - 9-cho, Meiginhi, 4th column of the date and time, 5th figure Input; Su × 亥, 庸 4th column of Ikun I, explanation 6th Figure 8. Loquat of the present invention (8th cause of the present invention) No loquat dog #4 row 9 Figure 9 Hiromitsu 4rilf) Kan A 繍日は 1st Q Figure Hon bald - 〇の文訳 4th row 11 Diagram power orthogonal power power Y limiter increase g11 ticket Φ Enter lying power box, Shobai, special rotation, O input, strength, pressure Fig. 13 Fig. 12 Fig. 14

Claims (1)

[Claims] 1, the first and second amplifiers (41, 42), and the amplified output of the second amplifier (42) and the input signal wave are combined and the first
A first constant amplitude wave generation circuit (43) consisting of an analog circuit that generates a constant amplitude wave and inputs it to the first amplifier (41).
), the amplified output of the first amplifier (41) and the input signal wave are combined to generate a second constant amplitude wave, and the second amplifier (42) generates a second constant amplitude wave.
), a second constant amplitude wave generation circuit (44) consisting of an analog circuit input to ) A constant amplitude wave synthesis amplifier. 2. A constant amplitude wave generation circuit (46) consisting of an analog circuit that synthesizes an input signal wave and an auxiliary wave to generate two constant amplitude waves of constant amplitude, and two constant amplitude wave generation circuits output from the constant amplitude wave generation circuit. Two amplifiers (41, 42) that separately amplify constant amplitude waves, and a synthesis circuit (47) that synthesizes the amplified outputs of the two amplifiers (41, 42) to generate an output signal wave and an output auxiliary wave. ); and an auxiliary wave feedback circuit (48) that feeds back the output auxiliary wave of the synthesis circuit (47) to the input side of the constant amplitude wave generation circuit (46). 3. A constant amplitude wave generation circuit (46) consisting of an analog circuit that synthesizes an input signal wave and an auxiliary wave to generate two constant amplitude waves of constant amplitude; Two amplifiers (41, 4) that separately amplify two constant amplitude waves
2), a combining circuit (47) that combines the amplified outputs of the two amplifiers (41, 42) to generate an output signal wave and an output auxiliary wave, and a combining circuit (47) that generates an output auxiliary wave of the combining circuit (47). An auxiliary wave feedback circuit (48) that feeds back to the input side of the constant amplitude wave generation circuit (46), and an auxiliary wave feedback circuit that generates a second auxiliary wave from the input signal wave and inputs it to the constant amplitude wave generation circuit (46). A constant amplitude wave synthesis amplifier comprising a wave generation circuit (49). 4. Two second amplifiers (51, 52) that amplify the two constant amplitude waves, respectively, and these first and second amplifiers (
4. The constant amplitude wave synthesis device according to claim 1, further comprising a second synthesis circuit (53) for synthesizing the constant amplitude waves amplified in steps 51 and 52) to generate an output signal wave. shaped amplifier.