KR100564306B1 - N-way power divider/combiner - Google Patents

Abstract

FIELD OF THE INVENTION The present invention relates to N-path power dividers / synthesizers, particularly for distributing or synthesizing ultra-high frequency signals in N-paths in ultra-high frequency systems.

The N-path power divider / synthesizer of the present invention, in the N-path power divider / synthesizer, eliminates the isolation resistor and / or disconnect switch inserted in series on each signal path, and the parallel resistor and / or parallel switch. It is characterized by the addition of.

By using a parallel switch, the physical cutting does not occur when the signal transmission path is interrupted, thereby preventing the impact of the system, and by using the parallel resistor, there is an effect that a space is provided in the circuit realization space during manufacture.

Microwave, Splitter, Synthesizer, Splitter, Synthesizer

Description

N-path power divider / synthesizer {N-WAY POWER DIVIDER / COMBINER}             

1 is a circuit diagram showing an N-path power divider / synthesizer according to the prior art;

2 is a circuit diagram illustrating another N-path power divider / synthesizer according to the related art;

3 is a circuit diagram showing another N-path power divider / synthesizer according to the prior art,

4 is a circuit diagram showing an N-path power divider / synthesizer according to a first embodiment of the present invention;

5 is a circuit diagram showing an N-path power divider / synthesizer according to a second embodiment of the present invention;

6 is a circuit diagram illustrating an N-path power divider / synthesizer according to a third embodiment of the present invention.

7 is a circuit diagram showing an N-path power divider / synthesizer according to a fourth embodiment of the present invention.

FIELD OF THE INVENTION The present invention relates to N-path power dividers / synthesizers, particularly for distributing or synthesizing ultra-high frequency signals in N-paths in ultra-high frequency systems.

Generally, a power divider for distributing high frequency power to multiple output ports and a power combiner for synthesizing high frequency power input to multiple ports and outputting them to a single port are widely used in a microwave system. .

A power divider is used to distribute a very high frequency signal output from one signal source into several required parts at a constant ratio, and a power synthesizer combines the high frequency signals output from multiple signal sources or amplifiers to enhance one antenna or output. It is used to Depending on the implementation, it may also be configured to function as both a power synthesizer and a divider as one device.

An example of such a power divider / synthesizer is the 'N-Way Wilkinson power divider' (where N is an integer greater than 1) proposed by Wilkinson. The basic configuration of the N-path Wilkinson power divider has an input port for inputting at least one high frequency signal and one or more output ports for distributing and outputting the high frequency signal inputted to the input port. Such a configuration can be manufactured in various forms, but a typical example is composed of a micro strip line or a strip substrate.

FIG. 1 shows the structure of a conventional N-path power divider / synthesizer, which is proposed by Wilkinson and named N-path equal Wilkinson power divider. The configuration and operation of the N-path equal Wilkinson power divider configured as shown in FIG. 1 will be briefly described as follows.

Now, when a high frequency signal is input to the common input / output port Pi, the high frequency signal is formed as a micro strip line, and a plurality of transmission lines 111 and 112 are connected at one side to the common input / output port Pi. , 113). In this case, each of the transmission lines 20, 22, 24, and 26 has a length of 'λ / 4' (λ is an input signal wavelength), and each of the other nodes has one side commonly connected to the common node CN. It is connected to the other side of the isolation resistors 121, 122, 123. In addition, ports (Po1, Po2, Po3) for outputting a distributed signal are provided at the other side of the isolation resistors (121, 122, 123) and the other nodes of the transmission lines (111, 112, 113).

The port Pi is used as a common input / output port, and the ports Po1, Po2, and Po3 are used as ports for inputting and outputting signals individually. Each of these ports Po1, Po2, Po3 is connected to a transmitter, a receiver (not shown) for outputting a high frequency signal, or a high frequency power amplifier (not shown) for amplifying a high frequency signal.

Therefore, when the high frequency signal RF is input to the port 10 as described above, the power of the input high frequency signal RF is divided into signals having the same phase and amplitude and outputted separately to N ports. At this time, if the load of each of the ports Po1, Po2, Po3 is matched, the isolation resistors 121, 122, 123 connected to the other node of each of the transmission lines 111, 112, and 113 are powered. This is not lost. Therefore, the high frequency signal is distributed and transmitted only to the ports Po1, Po2, and Po3 used as output terminals.

In this case, in the configuration of FIG. 1, the transmission lines 111, 112, and 113 connected between the port 10 and the plurality of isolation resistors 121, 122, and 123 have a length of λ / 4. This is to make the phase of the reflected signal from the ports Po1, Po2, Po3 equal. When the characteristic impedance of the transmission lines 111, 112, and 113 is Zo, Equation 1 is used.

In Equation 1, n is a natural number other than '0', and Ro is a characteristic impedance of 50 Ω. At this time, the input impedance Zin of the N-path Wilkinson power divider as shown in FIG. 1 becomes Ro.

By changing the input and output of the N-path Wilkinson power divider operated as described above, it is operated by an N-way power combiner that synthesizes the power of the high frequency signal. For example, if the ports Po1, Po2, Po3 are used as input ports for inputting a high frequency signal, and the common input / output port Pi is used as an output port for outputting a synthesized high frequency signal, the N-path power synthesizer is used. It can be used, the operation thereof is as follows.

Now, when high frequency signals amplified and output from arbitrary high frequency signal output devices or a plurality of amplifiers are input to each of the ports Po1, Po2, and Po3, the high frequency signals are connected to the respective transmission lines 111, 112, and 113. It is supplied to the common input / output port Pi through the synthesized output from the common input / output port Pi.

At this time, if the signal strength and phase of the input high frequency signals are all the same, the power of the high frequency signals is synthesized to appear as a common input / output port Pi. However, when the signal strength and phase of the input high frequency signals are different from each other, the signal is synthesized without loss of power of the input high frequency signals, so that only a certain amount of power is consumed only in the isolation resistors 121, 122, and 123. Output to the input / output port Pi.

When designing a power divider / synthesizer as shown in FIG. 1, it is very important to match the resistance values of the isolation resistors 121, 122, and 123 with the output resistances of the ports Po1, Po2, and Po3.

However, the conventional N-path power divider / synthesizer having the configuration as shown in FIG. 1 may be a circuit (eg, a high frequency power amplifier, a transmitter, a receiver, etc.) connected to a plurality of signal transmission paths. For example, when a fault occurs in a circuit connected to one of the paths between the ports Po1, Po2, Po3 used as a plurality of input / output terminals from the common input / output port Pi, Continuously distributing or synthesizing the power without eliminating the problematic path will result in power wastage and impedance mismatch due to the failed path, resulting in poor overall power efficiency.

2 illustrates an improved N-path distributor / synthesizer device according to the prior art for solving the above problem, the operation of which is as follows.

The circuit of the three-path power divider / synthesizer shown in FIG. 2 is responsible for the signal transfer path between the port Pi and the ports Po1, Po2, Po3 due to some reason, for example, a failure of the amplifier. If not available, the controller (not shown) is a pair of RF switches 211, 251 of a plurality of RF switches connected between the common nodes CN and the paths 221, 241 branching from the port Pi. ) Is 'off' and the signal transmission path connected to the port Po1 is separated from the common input / output port Pi and the common node CN.

When the signal transmission path is separated due to the failure of the circuit connected to the port Po1 as described above, if only two signal transmission paths between the common input / output port Pi and the ports Po2 and Po3 remain, The illustrated three-path power divider / compositor is converted from three-path to two-path power divider or synthesizer.

In addition, the circuit of FIG. 2 has a length of 'nλ / 2' between the isolation resistors 231, 232, and 233 and the common node CN, and further includes a second transmission line 52, 54, 56, 58) do not change the input / output characteristics of the entire circuit. In addition, the isolation resistors of the first transmission line of the effective signal transmission path, for example, the first transmission lines 222 and 223 even if any signal transmission path is removed by the operation of the controller 100 as described above. An integer multiple of λ / 2 or λ between (232, 233) and the output resistance results in little change in circuit characteristics.

3 is a configuration in which impedance matching means is added to the common input / output port Pi of the structure of FIG. 2 in order to further improve the impedance matching characteristics of the prior art of FIG. The N-path power divider / synthesizer of the illustrated structure has an improved effect of eliminating impedance mismatches at the common input / output port (Pi) when blocking any signal path.

However, there are many problems with the improved prior art as follows.

First, since it was implemented as a Wilkinson divider / synthesizer in which an isolation resistor was inserted in series in the signal transmission path, power loss and signal attenuation caused by the isolation resistor existed, making it difficult to implement a high power circuit.

Secondly, the isolation resistors inserted in series in the signal transmission path make it difficult to arrange a circuit, and the isolation resistors cannot be used as heat dissipation devices.

Third, all the switches for blocking the signal transmission path physically block the signal transmission path, and a large switching device is required, which increases the manufacturing cost, and the shock and durability of the switch element itself on the line due to physical switching. There was a problem.

The present invention has been made to solve the above problems, and an object thereof is to provide an N-path power divider / synthesizer that can be implemented as a high power circuit.

It is another object of the present invention to provide an N-path power divider / synthesizer which can have an efficient heat dissipation element.

It is another object of the present invention to provide an N-path power divider / synthesizer that has room for circuit implementation in manufacturing.

It is another object of the present invention to provide an N-path power divider / synthesizer that does not cause physical truncation upon interruption of the signaling pathway.                         

In addition, the present invention has another object to provide an N-path power divider / synthesizer that can reduce the manufacturing cost.

The N-path power divider / synthesizer of the present invention for achieving the above object, in the N-path power divider / synthesizer, removes the isolation resistor and / or disconnect switch inserted in series on each signal transmission path, and in parallel It is characterized by the addition of a resistor and / or a parallel switch.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

( Example  One)

The N-path power divider / synthesis of this embodiment is implemented using parallel resistors and parallel switches provided in parallel on each signal transmission path. The N-path power divider / synthesizer of this embodiment shown in FIG. 4 is a structure in the case of implementing in three paths.

In the N-path power divider / synthesizer according to the present embodiment, one side is connected to the common input / output port Pi, the common node CN, and the common input / output port Pi, and the other side is connected to the input / output ports Po1, Po2, Po3. A first transmission line 421, 422, 423 of a predetermined length, a second transmission line 431, 432, 433 of a predetermined length having one side connected to the other side of the first transmission line 421, 422, 423, and N signal transmission paths consisting of third transmission lines 461, 462, and 463 having a predetermined length having one side connected to the other side of the second transmission lines 431, 432, 433, and the other side connected to the common node CN. Including;

N serial switches (411, 412, 413) connected between the common input / output port (Pi) and the first transmission lines (421, 422, 423) in the N signal transmission paths; N parallel resistors 441 having one side connected to the connection point of the second transmission line 431, 432, 433 and the third transmission line 461, 462, 463 on each signal transmission path and the other side connected to the ground terminal. 442, 443); And N parallel switches having one side connected to a connection point of the second transmission line 431, 432, 433 and the third transmission line 461, 462, 463 on each signal transmission path, and the other side connected to a ground terminal. 451, 452, and 453).

Further, in the N-path power divider / synthesizer according to the present embodiment, a signal through an impedance matching means is input to the common input / output port Pi (in the case of a divider), or an output signal of the common input / output port Pi is passed through an impedance matching means. It is preferable to provide a separate impedance matching means so as to output.

The parallel resistors 441, 442, and 443 take and add a constant power loss in order to prevent the influence of the other signal transmission path by the transmission signal of one signal transmission path. In the present embodiment, unlike the prior art in which each signal transmission path is connected in series, it is connected in parallel to each signal transmission path, which brings the following advantages. First, the parallel resistors 441, 442, and 443 are not included in the signal transmission path itself, and the parallel resistors 441, 442, and 443 can be realized as resistance elements with much smaller resistance values than the series resistors. Power consumption is extremely small compared to the prior art. Secondly, the parallel resistors 441, 442, and 443 can be positioned independently of the signal transmission path, and constitute a heat sink that is discharged to the outside, thereby connecting both ends of the heat sinks to the connection points of the parallel resistors on the drawing. The parallel resistance can be implemented, so that the heat dissipation can be efficiently performed by using the heat sink, so that a separate heat dissipation means is not required.

The parallel switches 451, 452, and 453 are simultaneously switched with the serial switches 721, 722, and 723 installed in the same signal transmission path to block a signal transmission path in which an error occurs. Unlike a serial switch that physically blocks the signal, the signal transmission path is electromagnetically blocked when turned on by a so-called "λ / 4 short" characteristic by a transmission path having a quarter length of a transmission signal wavelength. In order to operate the parallel switches 451, 452, and 453, the lengths of the second transmission lines 431, 432, 433 and the third transmission lines 461, 462, and 463 should be λ / 4. Then, when the parallel switches 451, 452, and 453 are connected according to the "λ / 4 short" characteristic, the corresponding signal transmission path is blocked. Since the parallel switches 451, 452, and 453 are not the paths through which the transmission signals travel, the switches having the small passing capacity and the breaking capacity (particularly, semiconductor switches such as thyristors) can be used, thereby greatly reducing the cost.

It should be controlled by a separate switch controller (not shown) so that the turn-off of the series switch 721, 722, 723 installed in the same signal path and the turn-on of the parallel switch 451, 452, 453 are operated in conjunction with each other. . More preferably, when one of the signal transmission paths needs to be interrupted, first, the parallel switches 451, 452, and 453 connected to the signal transmission paths are turned on to block them first, and immediately after the corresponding serial switches 721, 722, and 723. Turn off) to cut off both ends of the signal path. In this case, when the series switches 721, 722, and 723 are also cut off, the amount of current decreases, so that a switch having a smaller breaking capacity can be implemented, and in some cases, a semiconductor switch can also be implemented.

Among the first transmission lines 421, 422, and 423, the second transmission lines 431, 432, and 433 and the third transmission lines 461, 462, and 463 constituting the signal transmission path, the third transmission line 461, 462 and 463 must have an odd multiple of lambda / 4 lengths to impart "λ / 4 short" characteristics, and the first transmission lines 421, 422 and 423 must be in series to satisfy the structure of the Wilkinson distributor. The length combined with the switches 411, 412, 413 should have a length that is a positive integer multiple of [lambda] / 4.

The first transmission line 421, 422, 423, the second transmission line 431, 432, 433 and the third transmission line 461, 462, 463 are all impedance elements of the same standard having a length of λ / 4. Implementing is simplified, and therefore is preferable in view of reduction of manufacturing cost.

However, by using the series switches 411, 412, 413 and the parallel switches 451, 452, and 453 as described above, the unnecessary signal loss can be prevented by blocking the signal transmission path in which an abnormality occurs, but the blocked signal transmission is performed. Impedance mismatch at the common input / output port Pi due to the path results in loss of signal input.

Therefore, in the N-path power divider / synthesizer of the present preferred embodiment, in order to match the impedance when the number of signal transmission paths is varied, an impedance matching means suitable for the number of signal transmission paths is provided in the common input / output port Pi. The positions of the first and second matching stubs Zm2 and Zm3 are obtained by Equation 2 below, and their lengths are obtained by Equation 3 below.

The three-path power divider / synthesizer having the impedance matching means of numerical values according to the above equations, when only three signal transmission paths are used, turns on only the second stub switch Sm2 and uses two signal transmission paths. Only the first stub switch Sm1 is turned on, and when one signal transmission path is used, both the first stub switch Sm1 and the second stub switch Sm2 are turned off.

However, depending on the implementation, when the three signal paths are used, both the first stub switch and the second stub switch are turned off. When the two signal paths are used, only the first stub switch is turned on. When using the signal transmission path, only the second stub switch may be turned on to implement impedance matching. Of course, in this case, the above equations are not directly applied, but modified and applied appropriately.

( Example  2)

The N-path power divider / synthesis of this embodiment uses a parallel switch provided in parallel on each signal transmission path, and the resistance for separation of the signal transmission path was added in series on the signal transmission path as in the prior art. The N-path power divider / synthesizer according to the present embodiment shown in FIG. 5 has a structure in the case of implementing in three paths.

In the N-path power divider / synthesizer according to the present embodiment, one side is connected to the common input / output port Pi, the common node CN, and the common input / output port Pi, and the other side is connected to the input / output ports Po1, Po2, Po2. A first transmission line 521, 522, 523 of a predetermined length, an isolation resistor 531, 532, 533 having one side connected to the other side of the first transmission line 521, 522, 523, the isolation resistor 531, One side is connected to the second transmission line 541, 542, 543 of a predetermined length having one side connected to the other side of 532, 533, and the other side of the second transmission line 541, 542, 543, and the other side is a common node. It includes N signal transmission path consisting of the third transmission line (561, 562, 563) of a predetermined length connected to the (CN),

N serial switches (511, 512, 513) connected between the common input / output port (Pi) and the first transmission lines (521, 522, 523) in the N signal transmission paths; N parallel switches having one side connected to a connection point of the second transmission line 541, 542, 543 and the third transmission line 561, 562, 563 on each signal transmission path, and the other side connected to the ground terminal. 551, 552, 553).

Further, in the N-path power divider / synthesizer according to the present embodiment, a signal through an impedance matching means is input to the common input / output port Pi (in the case of a divider), or an output signal of the common input / output port Pi is passed through an impedance matching means. It is preferable to provide a separate impedance matching means so as to output.

The structure and function of the isolation resistors 531, 532, 533 added in series to the signal transmission path are the same as in the case of the improved prior art isolation resistor, and the structure and function of the impedance matching means which are preferably added are the first Since it is the same as the case of the embodiment, it is omitted.

In addition to the structure of the parallel switches 551, 552, and 553, the function of separating the signal transmission path in which an error occurs in connection with the serial switches 511, 512, and 513, and the effect obtained by being added in parallel to the signal transmission path are also described. The same as in the case of the first embodiment, and similar description is omitted.

The first transmission lines 521, 522, and 523 need to have a length of a positive integer multiple of λ / 4 equal to the length of the series switches 511, 512, and 513, and the second transmission lines 541, 542, 543. ), The sum of the isolation resistors 531, 532, and 533 needs to have a positive odd multiple of lambda / 4, and the third transmission lines 561, 562 and 563 have a positive odd multiple of lambda / 4. It just needs to have a length. However, for the convenience of manufacturing, all three transmission lines preferably have a length of λ / 4.

( Example  3)

The N-path power divider / synthesizer of this embodiment separates each signal transmission path using parallel resistors provided in parallel on each signal transmission path, and the blocking of the signal transmission path in which an abnormality occurs is performed in the same manner as in the prior art. Two series switches provided at both ends were used. The N-path power divider / synthesizer of the present embodiment shown in FIG. 6 has a structure in the case of implementing in three paths.

In the N-path power divider / synthesizer according to the present embodiment, one side is connected to the common input / output port Pi, the common node CN, and the common input / output port Pi, and the other side is connected to the input / output ports Po1, Po2, Po3. A first transmission line 621, 622, 623 of a predetermined length, a second transmission line 631, 632, 633 of a predetermined length having one side connected to the other side of the first transmission line 621, 622, 623, and N signal transmission paths consisting of third transmission lines 651, 652, and 653 having a predetermined length having one side connected to the other side of the second transmission lines 631, 632, and 633 and the other side connected to the common node CN. Including;

N first serial switches (611, 612, 613) connected between the common input / output port (Pi) and the first transmission lines (621, 622, 623) in the N signal transmission paths; N second series switches 661, 662, 663 connected between the third transmission lines 651, 652, 653 and the common node CN; And N parallel resistors having one side connected to the connection point of the second transmission line 631, 632, 633 and the third transmission line 651, 652, 653 on each signal transmission path, and the other side connected to the ground terminal. 641, 642, and 643).

Further, in the N-path power divider / synthesizer according to the present embodiment, a signal through an impedance matching means is input to the common input / output port Pi (in the case of a divider), or an output signal of the common input / output port Pi is passed through an impedance matching means. It is preferable to provide a separate impedance matching means connected to the Pi stage so as to be outputted.

The blocking function of the signal transmission path by the first series switch 611, 612, 613 and the second series switch 661, 662, 663 connected to the signal path is the same as that of the improved prior art, and is added. Since the structure and function of the preferred impedance matching means are the same as in the first embodiment, they are omitted.

The effect obtained by the addition of the parallel resistors 641, 642, 643 is also the same as in the case of the first embodiment, and the description is similarly omitted.

The first transmission lines 621, 622, and 623 have a length equal to the length of the first series switches 611, 612, and 613 to have a positive integer multiple of λ / 4, and the second transmission lines 631, 632. 633, the third transmission lines 651, 652, and 653, and the second series switches 661, 662, and 663 may have a length of a positive integer multiple of lambda / 2. However, for convenience of manufacture, it is preferable to implement all three as having a length of λ / 4 as shown.

( Example  4)

The N-path power divider / synthesizer according to the present embodiment separates each signal transmission path using parallel resistors provided in parallel on each signal transmission path, and the blocking of the signal transmission path in which an error occurs is common input / output between both ends of the signal transmission path. A parallel switch provided at one end of the port and a series switch provided at one end of the common node were used. The N-path power divider / synthesizer of the present embodiment shown in FIG. 7 is a structure in the case of implementing in three paths.

In the N-path power divider / synthesizer according to the present embodiment, one side is connected to the common input / output port Pi, the common node CN, and the common input / output port Pi, and the other side is connected to the input / output ports Po1, Po2, Po3. A first transmission line 711, 712, 713 of a predetermined length, a second transmission line 731, 732, 733 of a predetermined length having one side connected to the other side of the first transmission line 711, 712, 713, and N signal transmission paths consisting of third transmission lines 751, 752, and 753 having a predetermined length having one side connected to the other side of the second transmission lines 731, 732, and 733 and the other side connected to the common node CN. Including;

N parallel switches (721, 722, 723) connected between a connection point of the first transmission line (711, 712, 713) and the second transmission line (731, 732, 733) and a ground terminal; N series switches 761, 762, 763 connected between the third transmission line 751, 752, 753 and the common node; N parallel resistors having one side connected to a connection point of the second transmission line 731, 732, 733 and the third transmission line 751, 752, 753 on each signal transmission path, and the other side connected to the ground terminal. 741, 742, and 743).

Further, in the N-path power divider / synthesizer according to the present embodiment, a signal through an impedance matching means is input to the common input / output port Pi (in the case of a divider), or an output signal of the common input / output port Pi is passed through an impedance matching means. It is preferable to provide a separate impedance matching means so as to output.

Since the effect obtained by the addition of the parallel resistors 741, 742, and 743 and the impedance matching means that can be provided separately are the same as in the case of the first embodiment, detailed description thereof will be omitted.

The parallel switches 721, 722, and 723 are switched at the same time as the series switches 761, 762, and 763 installed in the same signal transmission path to block a signal transmission path in which an error occurs. Unlike a serial switch that physically blocks the signal, the signal transmission path is electromagnetically blocked when turned on by a so-called "λ / 4 short" characteristic by a transmission path having a quarter length of a transmission signal wavelength. In order to operate the parallel switches 721, 722, and 723 as described above, the lengths of the first transmission lines 711, 712, 713 and the second transmission lines 731, 732, and 733 should have λ / 4 ( The third transmission line must have a length of λ / 4, in order to have a length of λ / 2 together with the second transmission line). Then, when the parallel switches 721, 722, and 723 are connected according to the "λ / 4 short" characteristic, the corresponding signal transmission path is blocked. Since the parallel switches 721, 722, and 723 are not the paths through which the transmission signals travel, a switch (e.g., a semiconductor switch such as a thyristor) having a small passing capacity and a breaking capacity can be used, which greatly reduces the cost.

The turn-off of the series switches 761, 762, 763 and the turn-on of the parallel switches 721, 722, 723 installed in the same signal transmission path must be controlled by a separate switch controller (not shown) to operate in conjunction with each other. . More preferably, when one of the signal transmission paths needs to be interrupted, first, the parallel switches 721, 722, and 723 connected to the signal transmission paths are turned on to block them first, and immediately after that, the series switches 761, 762, and 763 are applied. Turn off) to cut off both ends of the signal path. In this case, when the series switches 761, 762, and 763 are also disconnected, the amount of current decreases, so that a switch having a smaller breaking capacity can be implemented, and in some cases, a semiconductor switch can be implemented.

In addition, one end of the parallel switches 721, 722, and 723 is connected to the input / output ports Po1, Po2, and Po3, so that the voltage level of the input / output ports Po1, Po2, Po3 of the signal transmission path that is blocked indicates a ground potential. Have. By taking advantage of this, when the voltage level of the input / output ports (Po1, Po2, Po3) becomes the ground potential, the signal transmission device such as a connected amplifier detects that the transmission line is blocked, so that the power supply itself can be stopped or take necessary measures. It may also be implemented, such as to enable various implementations of the signal transmission device.

Preferably, the first transmission lines 711, 712, 713 and the second transmission lines 731, 732, 733 have a length of λ / 4, and the second transmission lines 731, 732, 733 and the second transmission line 731, 732, 733. The three transmission lines 751, 752 and 753 and the series switches 761, 762 and 763 should have a length of? / 2 in total. Accordingly, it is preferable that the third transmission lines 751, 752, 753 and the series switches 761, 762, 763 have a length of λ / 4 in total, which also means that all transmission lines have a length of λ / 4. It can be implemented to increase the convenience of production.

Although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto, and the technical spirit of the present invention and the claims to be described below by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents.

By implementing the N-path power divider / synthesizer according to the present invention, transmission signal loss can be minimized, and thus can be manufactured for high power.

In addition, there is an effect that can prevent the heat generation by replacing some components with a heat sink.

In addition, by eliminating series isolation resistors that occupy a considerable amount of space on the signal transmission path, there is an effect that a space is provided in a circuit implementation space.

By implementing the N-path power divider / synthesizer according to the present invention using a parallel switch, physical cutting does not occur when the signal path is blocked, thereby preventing the impact of the system due to physical cutting.

In addition, since the amount of transmission paths flowing to the switch used at the time of blocking the signal transmission path becomes small, the use of a small capacity switch element becomes possible, thereby reducing the cost. Particularly, in the case of the semiconductor switch device, the switching time may be reduced.

Claims (16)

Common input and output ports; Common node; A first transmission line having one side connected to the common input / output port and the other side connected to the input / output port, a second transmission line having a predetermined length having one side connected to the other side of the first transmission line, and the second transmission line N signal transmission paths comprising a third transmission line having a predetermined length having one side connected to the other side and the other side connected to the common node; N serial switches connected between the common input / output port and the first transmission line in the N signal transmission paths; N parallel resistors having one side connected to the connection point of the second transmission line and the third transmission line on each signal transmission path and the other side connected to the ground terminal; And N parallel switches having one side connected to the connection point of the second transmission line and the third transmission line on each signal transmission path and the other side connected to the ground terminal. N-path power divider / synthesizer comprising a. The method of claim 1, N-path power divider / synthesizer, wherein the turn-off of the series switch and the turn-on of the parallel switch are simultaneously performed connected to the same signal path. The method of claim 1, And the first transmission line, the second transmission line, and the third transmission line are N path power dividers / synthesizers, all of which are equal in size. The method of claim 1, A matching line receiving or outputting a signal to one side, the other side being connected to the common input / output port; N-1 matching stubs connected to the matching lines according to the number of activated signal transmission paths; And And an impedance matching means comprising N-1 stub switches for switching the matching stub and the matching line. Common input and output ports; Common node; One side is connected to the common input / output port and the other side is a first transmission line having a predetermined length connected to the input / output port, an isolation resistor having one side connected to the other side of the first transmission line, and one side connected to the other side of the isolation resistor. N signal transmission paths including a second transmission line having a predetermined length and a third transmission line having a predetermined length having one side connected to the other side of the second transmission line and the other side connected to the common node; N series switches connected between the common input / output port and a first transmission line in the N signal transmission paths; And N parallel switches having one side connected to the connection point of the second transmission line and the third transmission line on each signal transmission path and the other side connected to the ground terminal. N-path power divider / synthesizer comprising a. The method of claim 5, N-path power divider / synthesizer, wherein the turn-off of the series switch and the turn-on of the parallel switch are simultaneously performed connected to the same signal path. The method of claim 5, And the first transmission line, the second transmission line, and the third transmission line are N path power dividers / synthesizers, all of which are equal in size. The method of claim 5, A matching line receiving or outputting a signal to one side, the other side being connected to the common input / output port; N-1 matching stubs connected to the matching lines according to the number of activated signal transmission paths; And And an impedance matching means comprising N-1 stub switches for switching the matching stub and the matching line. Common input and output ports; Common node; A first transmission line having one side connected to the common input / output port and the other side connected to the input / output port, a second transmission line having a predetermined length having one side connected to the other side of the first transmission line, and the second transmission line N signal transmission paths comprising a third transmission line having a predetermined length having one side connected to the other side and the other side connected to the common node; N first serial switches connected between the common input / output port and the first transmission line in the N signal transmission paths; N second series switches connected between the third transmission line and the common node; And N parallel resistors having one side connected to the connection point of the second transmission line and the third transmission line on each signal transmission path and the other side connected to the ground terminal. N-path power divider / synthesizer comprising a. The method of claim 9, N-path power divider / synthesizer, wherein the turn-off of the first series switch and the turn-off of the second series switch are simultaneously performed connected to the same signal path. The method of claim 9, And the first transmission line, the second transmission line, and the third transmission line are N path power dividers / synthesizers, all of which are equal in size. The method of claim 9, A matching line receiving or outputting a signal to one side, the other side being connected to the common input / output port; N-1 matching stubs connected to the matching lines according to the number of activated signal transmission paths; And And an impedance matching means comprising N-1 stub switches for switching the matching stub and the matching line. Common input and output ports; Common node; A first transmission line having one side connected to the common input / output port and the other side connected to the input / output port, a second transmission line having a predetermined length having one side connected to the other side of the first transmission line, and the second transmission line N signal transmission paths comprising a third transmission line having a predetermined length having one side connected to the other side and the other side connected to the common node; N parallel switches connected between a connection point of the first transmission line and the second transmission line and a ground terminal; N series switches connected between the third transmission line and the common node; And N parallel resistors having one side connected to the connection point of the second transmission line and the third transmission line on each signal transmission path and the other side connected to the ground terminal. N-path power divider / synthesizer comprising a. The method of claim 13, N-path power divider / synthesizer, wherein the turn-off of the series switch and the turn-on of the parallel switch are simultaneously performed connected to the same signal path. The method of claim 13, And the first transmission line, the second transmission line, and the third transmission line are N path power dividers / synthesizers, all of which are equal in size. The method of claim 13, A matching line receiving or outputting a signal to one side, the other side being connected to the common input / output port; N-1 matching stubs connected to the matching lines according to the number of activated signal transmission paths; And And an impedance matching means comprising N-1 stub switches for switching the matching stub and the matching line.

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