JP2013115491A - Power distributor and power distribution device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a power distributor which improves the amplitude deviation and the phase deviation of signals, on the outside and inside of a line, caused by a corner in the way of the line.SOLUTION: A slit 7a is formed immediately after a corner 3 in an input line 1 from the inside direction of the corner 3, so as to improve the amplitude deviation and phase deviation of signals transmitted to output terminals 6a, 6b, and a slit 7b is formed immediately before a signal branch 4 in the input line 1 to face the slit 7a from the outside direction of the corner 3 so as to improve the amplitude deviation and phase deviation of signals transmitted to the output terminals 6a, 6b. The amplitude deviation and phase deviation of signals being transmitted, caused by the corner 3 provided in the way of the input line 1, can be improved by the slits 7a, 7b.

Description

  The present invention relates to, for example, a power distributor and a power distribution apparatus that distribute microwave signals.

  As a method of achieving high output with an amplifier, there is a method of combining outputs of a plurality of transistors. In order to efficiently combine outputs, it is required that all transistors operate with the same phase and the same amplitude.

FIG. 12 is a block diagram showing a power distributor according to Conventional Example 1.
In the figure, an input line 1 has a corner 3 that changes the transmission direction of a signal on the way, and transmits a signal input from an input terminal 2.
The signal branching unit 4 distributes the signal transmitted by the input line 1 in two directions, transmits one signal after distribution to the output line 5a, and outputs it from the output terminal 6a. Further, the other signal after distribution is transmitted to the output line 5b and output from the output terminal 6b. The power distributor line is formed of a microstrip line or a strip line.

  FIG. 13 shows a diagram in which the transmission distance of a signal passing through the outside of the line (outside corner 3) and inside the line (inside corner 3) is defined. Further, FIGS. 14 and 15 show the simulation results of the amplitude deviation and the phase deviation according to Conventional Example 1. FIG.

  In the conventional example 1, in the tournament type high frequency power distributor having the corner 3 in front of the signal branching section 4, the transmission distance outside the line is a + b + c + d and the transmission distance inside the line is a + c + d as shown in FIG. The transmission distance between the outside and the inside of the line is different by the transmission distance b at the corner 3. Therefore, the phase of the signal transmitted to the output terminals 6a and 6b has a deviation by the difference of the transmission distance. Further, since the signal passing through the corner 3 is likely to flow toward the outside of the line, the signal is stronger at the output terminal 6a at the output terminal 6a and the output terminal 6b, and the amplitude also varies.

Looking at the simulation results of FIGS. 14 and 15, it can be confirmed that the deviation is surely generated with an amplitude deviation of 0.46 dB and a phase deviation of 1.5 °.
14 and 15, A is a result of a signal going from the input terminal 2 to the output terminal 6 a (outside of the line (outside of the corner 3)), and B is the output terminal 6 b (inside of the line (inside of the corner 3)) of the input terminal 2. ) Is the result of the signal going to.

As a method for preventing this deviation, a power distributor of Conventional Example 2 (Patent Document 1 below) has been proposed.
FIG. 16 is a configuration diagram showing a power distributor according to the second conventional example.
In the figure, in this power distributor, a slit 7 is formed from the inside direction of the corner 3 of the input line 1 between the corner 3 and the signal branching section 4.

  FIG. 17 shows a diagram in which the transmission distance of a signal passing through the outside of the line (outside corner 3) and inside the line (inside corner 3) is defined. Further, FIGS. 18 and 19 show simulation results of amplitude deviation and phase deviation according to the second conventional example.

In the second conventional example, as shown in FIG. 17, when the transmission distance increased by forming the slit 7 is α, the transmission distance outside the line is expressed as a + b + c + d, and the transmission distance inside the line is expressed as a + c + d + α. By forming the slit 7 having α so that the transmission distance between the outside of the line and the inside of the line becomes equal, the signal transmission distance between the outside of the line and the inside of the line becomes equal, and is transmitted to the output terminals 6a and 6b. Improve the phase deviation of the signal.
18 and 19, the amplitude deviation is 0.32 dB, the phase deviation is 0.6 °, and not only the phase deviation but also the amplitude deviation is slightly improved.

JP 2006-238184 A

Since the conventional power divider is configured as described above, when passing through the corner 3, the difference in transmission distance between the outside of the line and the inside of the line is adjusted by the slit 7 disposed in front of the signal branching unit 4. And the phase deviation is improved.
However, as compared with the improvement of the phase deviation, there is a problem that the improvement of the amplitude deviation similarly generated at the corner 7 is small.

  The present invention has been made to solve the above-described problems, and provides a power distributor and a power distribution device that improve the amplitude deviation and phase deviation of the signal outside and inside the line caused by a corner in the middle of the line. With the goal.

  The power divider of the present invention is formed immediately after the corner of the input line and from the inside of the corner so that the amplitude deviation and phase deviation of the signal transmitted to the first and second output lines are improved. The first slit and the signal transmitted to the first and second output lines are improved immediately before the signal branching portion in the input line and in the direction outside the corner so that the amplitude deviation and phase deviation of the signal transmitted to the first and second output lines are improved. And a second slit formed so as to face the first slit.

  According to the present invention, the first and second slits can improve the amplitude deviation and phase deviation of the signal transmitted to the first and second output lines caused by the corner provided in the middle of the input line. There is an effect that can be done.

It is a block diagram which shows the power divider | distributor by Embodiment 1 of this invention. FIG. 2 is a transmission distance definition diagram for FIG. 1. It is a characteristic view which shows the amplitude-frequency characteristic of the power divider | distributor by Embodiment 1 of this invention. It is a characteristic view which shows the phase-frequency characteristic of the power divider | distributor by Embodiment 1 of this invention. It is a block diagram which shows the other power divider | distributor by Embodiment 1 of this invention. It is a block diagram which shows the power distribution apparatus by Embodiment 2 of this invention. It is a block diagram which shows the other electric power distribution apparatus by Embodiment 2 of this invention. It is a block diagram which shows the power distribution apparatus by Embodiment 3 of this invention. It is a block diagram which shows the power divider | distributor by Embodiment 4 of this invention. It is a characteristic view which shows the amplitude-frequency characteristic of the power divider | distributor by Embodiment 4 of this invention. It is a characteristic view which shows the phase-frequency characteristic of the power divider | distributor by Embodiment 4 of this invention. It is a block diagram which shows the power divider | distributor by the prior art example 1. FIG. 14 is a transmission distance definition diagram for FIG. 13. It is a characteristic view which shows the amplitude-frequency characteristic of the power divider | distributor by the prior art example 1. FIG. It is a characteristic view which shows the phase-frequency characteristic of the power divider | distributor by the prior art example 1. FIG. It is a block diagram which shows the power divider | distributor by the prior art example 2. FIG. 17 is a transmission distance definition diagram for FIG. 16. It is a characteristic view which shows the amplitude-frequency characteristic of the power divider | distributor by the prior art example 2. It is a characteristic view which shows the phase-frequency characteristic of the power divider | distributor by the prior art example 2. FIG.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing a power distributor according to Embodiment 1 of the present invention.
In the figure, an input line 1 has a corner 3 that changes the transmission direction of a signal on the way, and transmits a signal input from an input terminal 2.
The signal branching unit 4 distributes the signal transmitted by the input line 1 in two directions, transmits one signal after distribution to the output line 5a, and outputs it from the output terminal 6a. Further, the other signal after distribution is transmitted to the output line 5b and output from the output terminal 6b.
Further, the slit 7 a is formed immediately after the corner 3 in the input line 1 and from the inside direction of the corner 3, and the slit 7 b is immediately before the signal branching portion 4 in the input line 1 and also in the outer direction of the corner 3. Further, it is formed to face the slit 7a. The power distributor line is formed of a microstrip line or a strip line.

  FIG. 2 shows a diagram in which the transmission distance of a signal passing through the outside of the line (outside corner 3) and inside the line (inside corner 3) is defined. Further, FIGS. 3 and 4 show the simulation results of the amplitude deviation and the phase deviation according to the first embodiment.

Next, the operation will be described.
A signal is input from the input terminal 2. When the signal is transmitted through the input line 1 and reaches the corner 3, the signal transmission direction is changed by the corner 3. As described in the background art, the signal transmission distance is different between the outside of the line at the corner 3 and the inside of the line, and a deviation occurs in the phase. In addition, there are many signals that flow on the outer side and the outer side of the line at the corner 3, and the amplitude is strong. Therefore, an amplitude deviation occurs between the outer side and the inner side of the line.

  As shown in FIG. 2, when the transmission distance of the signal increased by the two slits 7a and 7b provided between the corner 3 and the signal branching section 4 is α and β, the transmission distance outside the line is a + b + c + d + β, the inside of the line Is expressed as a + c + d + α. By arranging the slits 7a and 7b having α and β such that the transmission distances on the outside of the line and the inside of the line are equal, the signal transmission distances on the outside of the line and on the inside of the line are equalized. The phase deviation of the signal transmitted to the output terminals 6a and 6b is improved.

Further, as shown in FIG. 1, the slits 7a and 7b make the signal appear to wrap around from the outside to the inside. Accordingly, the signal flowing from the corner 3 along the route outside the line is more likely to flow inside, so that the amplitude deviation is also improved.
Based on the above principle, the amplitude deviation and the phase deviation of the signals output to the output terminals 6a and 6b have the same effect.

From the simulation results of FIG. 3 and FIG. 4, it is confirmed that the amplitude deviation and the phase deviation are improved with an amplitude deviation of 0.17 dB and a phase deviation of 0.25 ° at a frequency of 9.5 GHz.
3 and 4, A is a result of a signal going from the input terminal 2 to the output terminal 6 a (outside of the line (outside of the corner 3)), and B is an output terminal 6 b (inside of the line (inside of the corner 3)) of the input terminal 2. ) Is the result of the signal going to.

  As described above, according to the first embodiment, the amplitude deviation and phase deviation of the transmitted signal generated by the corner 3 provided in the middle of the input line 1 can be improved by the slits 7a and 7b.

  In the first embodiment, the slits 7a and 7b are formed immediately after the corner 3 and immediately before the signal branching section 4. However, in order to perform appropriate power distribution, the slits 7a and 7b may be provided between the corner 3 and the signal branching section 4. It can be formed anywhere.

  In the first embodiment, the shapes of the slits 7a and 7b are rectangular. However, the shape may be other shapes such as a triangle, a semicircle, and a trapezoid in order to perform appropriate power distribution.

  Furthermore, in Embodiment 1, the slits 7a and 7b are formed one by one on the outer side and the inner side of the input line 1, but a plurality of slits may be formed to perform appropriate power distribution.

  Furthermore, in Embodiment 1, the shape of the corner 3 is a triangle, but in order to perform appropriate power distribution, other shapes such as a circular shape may be used as shown in FIG.

  Further, in the first embodiment, the input line 1 having a narrow width formed by the slit 7b is connected to the signal branching unit 4, but the position of the signal branching unit 4 on the output lines 5a and 5b is It may be connected at an arbitrary position for proper power distribution.

  Furthermore, in the first embodiment, the output lines 5a and 5b are two, but may be two or more.

  Further, in the first embodiment, the output lines 5a and 5b have corners, but the corners may be omitted.

  Furthermore, although applied to the power distributor in the first embodiment, it may be applied as a power combiner.

Embodiment 2. FIG.
FIG. 6 is a block diagram showing a power distribution apparatus according to Embodiment 2 of the present invention.
In the figure, the first-stage power distributor is the power distributor according to the first embodiment, and includes an input line 1a, an input terminal 2, a corner 3a, a signal branching unit 4a, output lines 5a and 5b, and slits 7a and 7b. Composed.
The second-stage power divider is a power divider according to Conventional Example 1, and includes input lines 1b and 1c, corners 3b and 3c, signal branching portions 4b and 4c, output lines 5c to 5f, and output terminals 6a to 6d. Consists of.

Next, the operation will be described.
The power distribution device according to the second embodiment is a combination of the power distributor according to the first embodiment and the power distributor according to the conventional example 1 connected in cascade.
More specifically, the output line 5a of the power divider according to the first embodiment and the input line 1b of the power divider according to the conventional example 1 are connected, and the output line 5b of the power divider according to the first embodiment, The input line 1c of the power divider according to the conventional example 1 is connected.

  Although the operation is the same as that of the first embodiment, if the power distributors are cascaded as in the second embodiment, only a part of the power distributors are effective when it is desired to improve the amplitude deviation and the phase deviation.

  As described above, according to the second embodiment, the power divider shown in the first embodiment can be appropriately employed at a place where it is desired to improve the amplitude deviation and the phase deviation in the power distribution device. Can be made easier.

  In the second embodiment, the power distributor according to the first embodiment is applied to the first-stage power distributor. However, when it is desired to improve the amplitude deviation and phase deviation of only a part of the power distribution, As shown in FIG. 7, the power divider according to the first embodiment may be applied only to the power distribution to be improved in the second stage.

  Furthermore, in the first embodiment, the output terminals 6a to 6d are four, but may be four or more.

Embodiment 3 FIG.
FIG. 8 is a block diagram showing a power distribution apparatus according to Embodiment 3 of the present invention.
In the figure, the first-stage power distributor is the power distributor according to the first embodiment, and includes an input line 1a, an input terminal 2, a corner 3a, a signal branching unit 4a, output lines 5a and 5b, and slits 7a and 7b. Composed.
The second-stage power distributor is the power distributor according to the first embodiment, and includes input lines 1b and 1c, corners 3b and 3c, signal branching sections 4b and 4c, output lines 5c to 5f, and output terminals 6a to 6a. 6d and slits 7c to 7f.

Next, the operation will be described.
The power distribution device according to the third embodiment is obtained by cascading the power distributors according to the first embodiment.
More specifically, the output line 5a of the power divider according to the first embodiment and the input line 1b of the power divider according to the first embodiment are connected, and the output line 5b of the power divider according to the first embodiment The input line 1c of the power divider according to the first embodiment is connected.

  Although the operation is the same as that of the first embodiment, by providing slits 7c to 7f on the output lines 5a and 5b, even if the number of signal distribution increases by cascading power distributors, the amplitude deviation and The phase deviation can be improved.

  As described above, according to the third embodiment, the amplitude deviation and the phase deviation can be improved even if the number of signal distributions increases.

Embodiment 4 FIG.
FIG. 9 is a block diagram showing a power distributor according to Embodiment 4 of the present invention.
In the figure, an input line 1 has a corner 3 that changes the transmission direction of a signal on the way, and transmits a signal input from an input terminal 2.
The signal branching unit 4 distributes the signal transmitted by the input line 1 in two directions, transmits one signal after distribution to the output line 5a, and outputs it from the output terminal 6a. Further, the other signal after distribution is transmitted to the output line 5b and output from the output terminal 6b.
Furthermore, the output line 5a in the outer direction of the corner 3 is formed so that the line width is narrower and the line length is shorter than the output line 5b in the inner direction of the corner 3.
Further, the impedance adjustment line 8 is provided between the input line 1 and the input terminal 2.

  10 and 11 show the simulation results of the amplitude deviation and the phase deviation according to the fourth embodiment.

Next, the operation will be described.
A signal is input from the input terminal 2. The signal is transmitted through the impedance adjustment line 8 and the input line 1. When the signal reaches the corner 3, the signal transmission direction is changed by the corner 3. As described in the background art, the signal transmission distance is different between the outside of the line at the corner 3 and the inside of the line, and a deviation occurs in the phase. In addition, there are many signals that flow on the outer side and the outer side of the line at the corner 3, and the amplitude is strong. Therefore, an amplitude deviation occurs between the outer side and the inner side of the line.

  As shown in FIG. 9, the line length La of the output line 5a and the line length Lb of the output line 5b are formed so that the transmission distance outside the line is equal to the transmission distance inside the line, so that the phase generated at the corner 3 occurs. Improve the deviation. Further, by making the line width Wa of the output line 5a narrower than the line width Wb of the output line 5b, the signal is more likely to flow inward, and the amplitude deviation is improved.

  However, when the line length and line width of the output line 5a and the output line 5b are adjusted in this way, the impedance viewed from the input line 1 is shifted every time the adjustment is made. Therefore, by adjusting the impedance by changing the line width Wc and the line length Lc of the impedance adjustment line 8, the power distribution for improving the amplitude deviation and the phase deviation between the output line 5a and the output line 5b having different line lengths and line widths. Even in the case, the design becomes easy.

From the simulation results of FIGS. 10 and 11, it can be confirmed that the amplitude deviation and the phase deviation are improved at an amplitude deviation of 0.07 dB and a phase deviation of 0.73 ° at a frequency of 9.5 GHz.
In FIGS. 10 and 11, A is a result of the signal from the input terminal 2 to the output terminal 6a (outside of the line (outside of the corner 3)), and B is the output terminal 6b (inside of the line (inside of the corner 3)) from the input terminal 2. ) Is the result of the signal going to.

  As described above, according to the fourth embodiment, the output line 5a in the outer direction of the corner 3 has a narrower line width than the output line 5b in the inner direction of the corner 3, and thus the amplitude of the signal transmitted. The phase deviation of the transmitted signal can be improved by improving the deviation and shortening the line length.

  In addition, since the impedance adjustment line 8 with the adjusted line width and line length is provided, the impedance deviation due to the adjustment of the line width and line length of the output lines 5a and 5b can be corrected and improved, and the design is easy. Can be.

In the second embodiment, the power distribution device in which the power distributor according to the first embodiment and the power distributor according to the conventional example 1 are connected in cascade is described. However, the power distributor according to the fourth embodiment and the conventional example are described. 1 may be a power distribution device connected in cascade with the power distributor 1.
Furthermore, a power distribution device in which the power distributor according to the first embodiment and the power distributor according to the fourth embodiment are cascade-connected may be used.

  In the third embodiment, the power distribution device in which a plurality of power distributors according to the first embodiment are cascade-connected has been described. However, in the power distribution device according to the fourth embodiment, the plurality of power distributors are cascade-connected. Also good.

  Furthermore, although the line length of the output line 5a is shorter than that of the output line 5b in the fourth embodiment, it may be reversed to perform appropriate power distribution.

Moreover, in Embodiment 4, although the line width of the output line 5a was made narrower than the output line 5b,
The reverse may be used to provide proper power distribution.

  Furthermore, in the fourth embodiment, the impedance adjustment line 8 is narrower than the input line 1, but may be reversed to perform appropriate impedance adjustment.

  Furthermore, although the impedance adjustment line 8 is provided on the input terminal 2 side of the input line 1 in the fourth embodiment, it may be provided at an arbitrary position on the input line 1 in order to perform appropriate impedance adjustment.

  In the present invention, within the scope of the invention, any combination of each embodiment, any modification of any component of each embodiment, or omission of any component in each embodiment is possible. .

  1, 1a to 1c input line, 2 input terminals, 3, 3a to 3c corner, 4, 4a to 4c signal branching part, 5, 5a to 5f output line, 6a to 6d output terminal, 7, 7a, 7b slit, 8 Impedance adjustment line.

Claims (5)

There is a corner that changes the direction of signal transmission on the way, an input line that transmits the input signal, and
A signal branching unit that distributes a signal transmitted by the input line;
A first output line for transmitting one of the signals distributed by the signal branching unit;
A second output line for transmitting the other signal distributed by the signal branching unit;
The first line formed immediately after the corner of the input line and from the inside of the corner so as to improve the amplitude deviation and the phase deviation of the signal transmitted to the first and second output lines. 1 slit,
In order to improve the amplitude deviation and the phase deviation of the signal transmitted to the first and second output lines, the input line is located immediately before the signal branching portion in the input line and from the outside of the corner. And a second slit formed so as to face the one slit. There is a corner that changes the direction of signal transmission on the way, an input line that transmits the input signal, and
A signal branching unit that distributes a signal transmitted by the input line;
A first output line for transmitting one of the signals distributed by the signal branching unit;
A second output line for transmitting the other signal distributed by the signal branching unit,
Out of the first and second output lines, the output line in the outward direction of the corner has the corner so that the amplitude deviation of the signal transmitted to the first and second output lines is improved. The line length is made shorter so that the line width is narrower than the inner output line and the phase deviation of the signals transmitted to the first and second output lines is improved. Features a power distributor.   The power divider according to claim 2, further comprising an impedance adjustment line provided on an input line closer to the input side than the corner, wherein at least one of a line width and a line length is adjusted. There is a corner that changes the direction of signal transmission on the way, an input line that transmits the input signal, and
A signal branching unit that distributes a signal transmitted by the input line;
A first output line for transmitting one of the signals distributed by the signal branching unit;
A power divider comprising a second output line for transmitting the other signal distributed by the signal branching unit;
A power distributor according to claim 1;
A power distributor according to claim 2;
A power distribution device characterized in that any two of the power distributors are combined and cascade-connected. A power distributor according to claim 1;
A power distributor according to claim 2;
A power distribution device, wherein any one of the power distributors is cascade-connected.

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