KR20040025424A - Combine and Distribution Unit for Impedance Composition - Google Patents

Abstract

PURPOSE: An impedance matching combiner/divider is provided to minimize the unnecessary power consumption by performing a switching operation to block an unnecessary line in a combining process and a dividing process. CONSTITUTION: An impedance matching combiner/divider includes a main body, a plurality of common input/output terminals(2,4,6), a plurality of transmission lines(8,10,12,14), and a plurality of switching elements(16,18,20). The body includes various kinds of receiving grooves and common nodes. The common input/output terminals(2,4,6) are installed at the main body in order to input or output RF signals from or to the outside. The transmission lines(8,10,12,14) are connected to the common input/output terminals. The switching elements(16,18,20) are used for matching the impedance according to the combination and division of RF signals by switching the transmission lines.

Description

Combined and Distribution Unit for Impedance Composition

The present invention relates to impedance matching synthesis and splitter, and in particular, by switching the transmission line using the transmission line itself, it is not necessary to add a separate switching means, and at the same time to provide a system that operates for each port to prevent power leakage An impedance matched synthesizer and divider is characterized in that it provides an accurate impedance.

In general, an ultra-high frequency system uses a power divider for distributing high frequency power to a plurality of output ports, and a power synthesizer for synthesizing high frequency power input to several ports and outputting the same to a single port.

For example, the power divider is useful for distributing a very high frequency signal output from one signal source to a plurality of necessary portions at a constant ratio. In addition, the power synthesizer is usefully used to increase the strength of one antenna or output by combining the ultra-high frequency signals output from several signal sources or amplifiers. Such synthesizers and distributors are typically implemented as one circuit.

An example of such a power divider / synthesizer is the N-way Wilkinson power divider proposed by "Wilkinson" (where N is an integer greater than 1). The basic configuration of the N-way 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 a high frequency signal input 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 is a transmission line circuit diagram of a conventional Wilkinson power divider).

The N-Way Wilkinson power divider / synthesizer maintains power of a high frequency signal when a failure occurs in a circuit connected to one of the signal paths in a circuit connected to a plurality of signal paths. By distributing power to the path to which the failed circuit is connected, power consumption is not only caused, but the impedance of the output terminal is not matched due to the path of the port to which the failed circuit is connected. It is worse, there is a problem that the output is not matched when operating as a power synthesizer, the overall output characteristics are worse.

Meanwhile, FIG. 2 illustrates an impedance matching method using an average matching method as an embodiment in which impedance matching is performed by a separate switching operation.

Looking at the circuit's operation, it turns on all switches to act as a Wilkinson divider with isolation resistors, and in a single path turns off the isolation resistors by turning on only S11 and S12. At this time, the transmission lines T11 and T12 use an average matching method.

In addition, in general, a single path has a impedance of 50 kW and a synthesis path has a 70.7 kW impedance. The conventional average matchable switchable combiner uses an impedance matching part having 60.3 kW, which is an intermediate value between 50 kW and 70.7 kW. It uses the result of matching when operating on any path.

However, this circuit configuration has a problem that the characteristics are inferior to the original Wilkinson divider because it takes an average value.

In addition, since the circuit configuration includes an isolation resistor because a separate switching means is used, the level and phase of the synthesized signal generated through the switching means are inconsistent, and thus, it is difficult to implement an accurate impedance matching having a desired value. .

The present invention is to solve the above problems, by dividing the connection port so that each has a separate switching operation, and at the same time the switching means to use the transmission line itself, thereby generating the desired impedance, and unnecessary errors The goal is to get rid of the factor.

As a means for achieving the above object,

The present invention includes a body in which various receiving grooves and a common node are formed; A common input / output terminal mounted to the body to input and output high frequency signals from the outside; A plurality of transmission lines having one side connected to the common input / output terminal; Switching means for switching the transmission line to match the impedance according to the distribution and synthesis of high-frequency signals.

In addition, the switching means is characterized in that the solenoid is turned off by the electromagnetic force.

In addition, the switching means is characterized in that the solenoid and the seesaw is a single pole double throw switch to induce a switching action by the seesaw movement.

In addition, the switching means, the solenoid is turned on and off by the electromagnetic force; It is characterized in that it comprises a pressure pin installed at the lower end of the solenoid to transfer the transmission line in accordance with the operation of the solenoid.

In addition, the switching means, a bipolar double-throw switch coupled to the solenoid and the seesaw to induce a switching action in the seesaw motion; One side is fixed to the support and the other side is fixed to the transmission line is installed on the seesaw end of the dipole twin throw switch, the support line along the flow of the dipole twin throw switch up and down reciprocating in the vertical axis direction of the support axis along the flow of the transmission line and the common input and output It is characterized by including a pressure pin for switching the terminal.

In addition, the pressure pin is characterized in that the restoring spring is further coupled to automatically restore if the pressing force from the top is not applied.

In addition, the transmission line is characterized in that the surface contact is coupled to the top, bottom or side of the common input and output terminals.

In addition, the length of the transmission line It is a feature.

In addition, the resistance of the transmission line in contact with the upper surface and the lower surface is characterized by providing a two-way impedance synthesis and divider of 70.7 Ω and 50 kHz, respectively.

In addition, the resistance of the transmission line in contact with the upper surface, the lower surface and the side is characterized by providing a 3-way impedance synthesizer and divider of 50 kHz, 70.7 kHz, 86.6 kHz, respectively.

1 is a transmission line circuit diagram of a conventional Wilkinson power divider.

Figure 2 is a switcher foot combiner using a conventional average matching method.

Figure 3 is an internal configuration of the present invention.

4 is a schematic diagram of a switchable 2-Way switchable combiner / divider in accordance with an embodiment of the present invention.

Figures 5a, b, c is an operating state diagram of FIG.

6 is a schematic diagram of a switchable 2-Way switchable combiner / divider in accordance with an embodiment of the present invention.

7a, b, c, e, f, g are operational state diagrams of FIG.

Explanation of symbols on the main parts of the drawings

2: first input / output terminal 4: second input / output terminal

6: 3rd input / output terminal 8: 1st transmission line

10: second transmission line 12: third transmission line

14: fourth transmission line 16: first solenoid assembly

18: second solenoid assembly 20: third solenoid assembly

22: fourth solenoid assembly 24: seesaw

26; Solenoid 28: Pressure Pin

30: restoring spring 32: support

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

3 is a block diagram of the present invention, as shown, the present invention is configured so that the impedance is provided according to the number of paths.

The present invention exemplifies the impedance matching circuit in the 2-way method, and a total of four transmission lines (8, 10, 12, 14) are input, and thus input / output terminals are three (2, 4, 6). .

That is, the first input / output terminal 2, the second input / output terminal 4, and the third input / output terminal 6 are provided, and four transmission lines connected thereto are provided (8, 10, 12, 14). Four switching means (16, 18, 20, 22) are provided for switching the transmission lines (8, 10, 12, 14).

In addition, a support 32 for supporting each of the transmission lines 8, 10, 12, and 14 is provided, and the switching means 16, 18, 20, and 22 provide an electromagnetic force that is turned on and off again according to the provision of the electromagnetic force. Means 26 and switching aids for switching the transmission lines by reciprocating in accordance with the provision of the electromagnetic force.

One side of the switching auxiliary means is attached to the support 32, the other side is attached to the transmission line (8, 10, 12, 14), and the lower portion around the support 32 under the control of the electromagnetic force providing means It is configured to descend or to rise to the top if no electromagnetic force is provided.

As the switching auxiliary means, in the present invention, the pressure pin 28 is used, and the pressure pin 28 is coupled to the restoring spring 30 so as to immediately rise when the pressure is released to the transmission line 8, 10, 12, 14) and the input / output terminals 2, 4, 6 are cut off.

As the electromagnetic force providing means, a single pole double throw switch 16, 18, 20, or 22, which is a kind of a solenoid or a solenoid assembly, may be used.

The solenoid 26 in the above is composed of a piston and a cylinder as well known and a plurality of wires are wound around the cylinder is configured to protrude or enter the piston in accordance with the electrical force, at this time connecting the transmission line by using the protruding force Can be switched, and the transmission line can be cut off by using the released one.

In addition, the single-pole double-throw switch 16, 18, 20, 22 is a combination of these solenoids 26, two solenoids 26 are inserted into one cylinder, the seesaw according to the operation of the solenoid 26 When 24 is set to move, and one of the solenoids 26 is operated, the other is applied to one end of the seesaw 24 or a pressure is applied to the other end through an operation method that does not work. .

Then, the seesaw 24 turns the pressure pin 28 on or off to connect or disconnect the transmission lines 8, 10, 12, 14.

The main feature of the present invention is to connect and switch the transmission lines 8, 10, 12, 14 directly.

That is, in the related art, a method of connecting a transmission line by using a separate switching means is used. Accordingly, power loss is caused or assembly is complicated, and impedance matching is not exactly matched. In this connection, the transmission line causes the switching action to occur.

A first connection method using the first input / output terminal as a transmission signal input terminal and the second input / output terminal as a transmission signal output terminal; A second connection method using the third input / output terminal as a transmission signal input terminal and the second input / output terminal as a transmission signal output terminal; There is a third connection method for outputting a signal integrated through the first input / output terminal and the third input / output terminal through the second input / output terminal.

Of course, there is a method opposite to the above-described input / output method, which uses a second input / output terminal as an input terminal, and outputs each method to one of the first input / output terminal or the third input / output terminal, and the second input / output terminal. There is a method of simultaneously outputting to the first and third input terminals as a common input terminal.

In the embodiment of the present invention will be described focusing on the first, second, third connection method described above.

Hereinafter, the operation of the present invention will be described in more detail.

First, the operation of the first connection method may be performed by switching the transmission lines 10 between the first input / output terminal 2 and the second input / output terminal 4, respectively, and turning off the remaining transmission lines 8, 12, and 14.

That is, the second solenoid assembly 18 is operated to make the second transmission line 10 contact the first input / output terminal 2 and the second input / output terminal 4, and the remaining first, third, and fourth solenoid assemblies ( 16, 20, and 22 do not operate so that a path is generated only through the second transmission line 10.

Of course, either the first input / output terminal 2 or the second input / output terminal 4 is used as an input and the other is used as an output.

In operation of the second connection method, the transmission line 12 between the second input / output terminal 4 and the third input / output terminal 6 may be switched and the remaining transmission lines 8, 10, and 14 may be turned off. .

That is, the third solenoid assembly 20 is operated to make the second transmission line 12 contact the second input / output terminal 4 and the third input / output terminal 6, and the remaining first, second, and fourth solenoid assemblies ( 16, 18, and 22 do not operate so that a path is generated only through the third transmission line 20.

At this time, of course, either the second input / output terminal 4 and the third input / output terminal 6 are used as inputs, and the other is used as outputs.

In addition, the operation of the third connection method will be described. Each of the transmission lines between the first input / output terminal 2 and the second input / output terminal 4 is switched, and at the same time, the second input / output terminal 4 and the third input / output terminal 6 are connected. Switch.

At this time, the first solenoid assembly 16 is operated so that the first transmission line 8 switches the first input / output terminal 2 and the second input / output terminal 4, and simultaneously operates the fourth solenoid assembly 22. The fourth transmission line 14 switches the second input / output terminal 4 and the third input / output terminal 6.

Of course, at this time, the first and third input / output terminals 2 and 6 may be used as outputs by using the second input / output terminal 4, and the second input / output may be used as inputs to the first and third input / output terminals 2 and 6. The terminal 4 can also be used as an output. When the first solenoid assembly 16 and the fourth solenoid assembly 22 are operated, the second and third solenoid assemblies 18 and 20 do not operate, so that the second transmission line 10 and the third transmission line 12 are not operated. Keep the) broken.

In the present invention, the first transmission line 8 is manufactured to have 70.7 kHz, the second transmission line 10 is manufactured to have 50 kHz, the third transmission line 12 is manufactured to have 50 kHz, and the fourth transmission line 14 is manufactured to have 70.7 kHz.

In the above, the resistance value is determined by the width of the transmission line, and the reason why the first transmission line 8 and the fourth transmission line 14 are manufactured to be 70.7 Ω in the present invention is the first transmission line 8. ) And the fourth integrated transmission line 14 has an impedance of 50 mV. That is, the reason for the figure of 70.7Ω is 50Ω × Is the result of calculation.

Also, the length of the transmission line The / 4 eliminates the need for other means of transmission, such as coaxial or microstrip lines.

FIG. 4 shows a circuit immediately before connecting the transmission lines, and FIG. 5A shows a case where the first transmission lines 8 and S11 and the fourth transmission lines 14 and S14 are connected in common. In this case, two lines are shown. Since (S11, S14) are integrated, the impedance is determined to be 50 kHz.

5B illustrates the case where only the second transmission lines 10 and S12 are used. In this case, an impedance of 50 kHz, which is a resistance value of the second transmission lines 10 and S12, is provided, and FIG. 5C illustrates the third transmission lines 12 and S13. In this case, an impedance of 50 mA, which is a resistance value of the third transmission lines 12 and S13, is provided.

Of course, all of the transmission lines not mentioned above remain broken.

This operation minimizes power loss by not touching other transmission paths and improves the isolation value when opened.

In other words, it is possible to secure a constant separation distance between the input and output terminals and the non-operating transmission line.

On the other hand, the scope of the present invention is applicable to the N-way, since the 2-way case has been illustrated above, the configuration and operation of the 3-way case will be briefly described.

In the 3-way case, three contact points are generated at one input / output terminal, and the transmission line is selectively switched as necessary. In addition, the solenoid assembly also has a total of nine to assist the switching of each transmission line (see Figure 6).

As shown in Fig. 7a, b, c, d, e, f, g, the transmission line contacts each input / output terminal to move along the 50 kHz path when power distribution occurs through one transmission path. .

In the case of input / output of one port, 50 kV lines are used, respectively, and the number of cases is 3 (Figs. 7A, 7B and 7C). In addition, when two ports are input / output, two transmission lines having 70.7 접촉 are contacted, and in this case, the total is three (Figs. 7D, E, F). Finally, when the three ports input and output, the three contact lines formed with 86.6 Ω can be contacted (Fig. 7g).

In addition, in the 4-way case, four contact points are generated at one input / output terminal, and a total of 16 transmission lines are required, and a total of 16 solenoid assemblies are required to control them. According to the combination method, four single transmission lines occur, six cases integrating two lines occur, three cases integrating three lines, and one case integrating four lines. Happens.

The resistance figure is 1 * Z0, * Z0, * Z0 ...... Continue to increase to Z0. 1 * Z0 for 2-way, * Z0 is required, and in the 3-way case 1 * Z0, * Z0, * Z0 is required. In case of N-way, 1 * Z0, * Z0, * Z0 ...... Z0 is what you need.

As a result, the present invention uses the transmission line itself as a switching element, and thus the transmission line is infinitely expandable.

As described above, when the present invention is used, switching is possible at the time of synthesis or a single path, minimizing unnecessary power loss by completely blocking the un-switched lines, and using the transmission line itself as a switching element. It offers the advantage of perfect impedance matching.

Claims (10)

A body having various receiving grooves and a common node formed therein; A common input / output terminal mounted on the body to input and output high frequency signals from the outside; A plurality of transmission lines having one side connected to the common input / output terminal; And switching means for switching the transmission lines to match impedances according to distribution and synthesis of high frequency signals. The method of claim 1, And said switching means is a solenoid that is turned on and off by an electromagnetic force. The method of claim 1, The switching means is impedance matching synthesis and splitter, characterized in that the solenoid and the seesaw is a single-pole double-throw switch to induce a switching action in the seesaw motion. The method of claim 1, The switching means includes a solenoid turned on and off by an electromagnetic force; Impedance matching synthesizer and distributor is installed on the lower end of the solenoid and comprises a pressure pin for switching the transmission line in accordance with the operation of the solenoid. The method of claim 1, The switching means includes: a bipolar double throw switch coupled to the solenoid and the seesaw to induce a switching action in the seesaw motion; One side is fixed to the support and the other side is fixed to the transmission line is installed on the seesaw end of the dipole twin throw switch, the support line along the flow of the dipole twin throw switch up and down reciprocating in the vertical axis direction of the support axis along the flow of the transmission line and the common input and output Impedance matching synthesis and divider comprising a pressure pin for switching the terminal. The method according to claim 4 or 5, The pressure pin is impedance matching synthesizer and divider, characterized in that the restoring spring is further coupled to automatically restore if the pressing force from the top is not applied. The method of claim 1, The transmission line is impedance matching synthesis and splitter, characterized in that coupled to the top, bottom or side of the common input and output terminals in surface contact. The method of claim 1, The length of the transmission line Impedance Matching Synthesis and Splitter, characterized in that The method of claim 1, A 2-way impedance synthesizer and divider, characterized in that the resistance of the transmission line in contact with the upper and lower surfaces is 70.7 Ω and 50 Ω, respectively. The method of claim 1, 3-way impedance synthesizer and divider, characterized in that the resistance of the transmission line in contact with the upper surface, the lower surface and the side is 50 kV, 70.7 kV, 86.6 kV, respectively.