KR101051144B1 - Impedance Compensation Device for Communication Equipment - Google Patents

Abstract

The present invention relates to an impedance compensation device of a communication device to maintain a constant communication impedance of the communication device according to the impedance standardized by wire-wireless communication related protocols, the plurality of input terminals 120 and the input terminal 120 Compensation mechanism 140 for adjusting the impedance of the input signal, the controller 150 for controlling the drive of the compensation mechanism 140 by checking the signal input through the input terminal 120, and the output of the adjusted signal is output An impedance compensator (100) comprising a terminal (170), wherein the compensation mechanism (140) comprises: a communication unit (142) disposed to be in communication with an input terminal (120) and an output terminal (170); A communication piece 143 fixedly movably to be detachable from the communication unit 142 or the output terminal 170 and spaced apart from the communication unit 142 by the ball of the ball body 143b; A pressing member 144 having a rotating block 144a of a magnetizable material, one end of which is rotatably fixed to press the communication piece 143; The first and second magnets are magnetized to the opposite poles opposite to the one poles while facing the permanent magnets 145a facing the center of the rotating block 144a and the one pole N or S, respectively. Electromagnet 145 having cores 145b and 145b 'and first and second solenoids 145c and 145c' wound on the first and second cores 145b and 145b 'and electrically connected to the controller 150. The controller 150 checks the signal input of the input terminal 120 to control the energization of the first and second solenoids 145c and 145c '.

Description

Impedance compensating equipment of communications apparatus

The present invention relates to an impedance compensation device of a communication device to maintain a constant communication impedance of the communication device according to the impedance standardized by wire and wireless communication related protocol.

Impedance standards for radio frequency (RF) systems or meters are often chosen based on the characteristics of the lines or circuits used.

For example, 600 ohms based on telephone lines at acoustic frequencies, 75 ohms at shortwaves, televisions (1 GHz or less), and 50 ohms at mobile radios, microwaves (100 MHz or more).

In particular, 50 ohms, the standard for impedance of mobile radio and microwave, is considered to be 33 ohms with the best power transfer characteristics of electromagnetic energy and 73 ohms with the lowest distortion of the RF signal waveform. 50 ohms is said to be selected.

According to these protocols, the impedance of the electrical signal applied to the communication equipment was unified to 50 ohms, and considering the compatibility with other devices, the signal impedance of the communication equipment was designed to be always compensated to 50 ohms.

1 is a view schematically illustrating a conventional impedance compensator, and will be described with reference to the drawing.

The general communication equipment has a number of structures that collectively receive and process signals transmitted and received from various channels. That is, the signals input to the plurality of input terminals 120 are concentrated to the center terminal unit 131 through the terminal unit 121 and then output to the output terminal 170. However, when a plurality of signals unified at 50 ohms are concentrated at the center terminal unit 131, the concentrated signal has a low impedance while reducing the ratio of power to current. Therefore, the impedance compensator 100 is applied to compensate for the impedance change.

For example, the signals input from the four input terminals 120 are concentrated on the center terminal unit 131 while being input to the impedance compensator 100 through the terminal units 121 of the respective input terminals 120. In this case, the terminal unit 121 may be disposed radially around the center terminal unit 131, and the communication between the terminal unit 121 and the center terminal unit 131 is determined under the control of the channel selection mechanism 160. For reference, the channel selector 160 controls the communication state between the terminal 121 and the center terminal 131 according to a setting value, which will be described in detail with reference to the impedance compensator according to the present invention.

Subsequently, the signal concentrated at the center terminal unit 131 is introduced into the compensation mechanism 130 through the communication unit 132 before being output to the output terminal 170, and is compensated and then output to the output terminal 170.

In more detail, when a signal is input from one of the four input terminals 120, the signal introduced into the center terminal unit 131 maintains a standard 50 ohms, so that the compensation mechanism 130 keeps the input signal intact. Is to print. However, when signals are input from two or more places, the signal introduced into the center terminal unit 131 has an impedance lower than the standard 50 ohms, and the compensation mechanism 130 outputs the compensation process so that the impedance is 50 ohms.

As a result, the impedance compensation device 100 having the compensation mechanism 130 compensates the final output signal to match the standard regardless of the signal flowing into the input terminal 120, thereby enabling the operation of communication equipment according to the protocol. .

The conventional compensation mechanism 130 for this purpose is provided with a compensation circuit board (PCB) 133 which is driven under the control of the controller 150 for detecting a signal input to the input terminal 120. The compensation circuit board 133 is designed to change the communication path according to the control of the controller 150, and various electronic components and the like are mounted therein. Since the structure and configuration of the compensation circuit board 133 are well-known and public technologies in the impedance compensation technology field, additional descriptions thereof will be omitted.

However, the compensation mechanism 130 of the conventional impedance compensator 100 is relatively expensive in the field of communication equipment manufacturing, while it is not easy to design and manufacture the compensation circuit board 133 that compensates the impedance under the control of the controller 150. Were classified into parts. In addition, due to the structural limitation of the PCB that physical deformation is easy due to the surrounding environment, there is a problem that the reliability of impedance compensation is not high and the accuracy of impedance compensation is relatively high.

Of course, such a mismatch of impedance not only causes a failure in interworking and compatibility with other equipment, but also causes a defect in a communication environment, and therefore, it has to be solved urgently.

Not described withdrawal number "111" is a "body", and is configured to support the input terminal 120, the compensation mechanism 130, the controller 150 and the like.

The description number "110" is a "case" and includes a main body 111 and a cover 116 (see FIG. 3).

Accordingly, the present invention has been made to solve the above problems, while precisely compensating for the output signal of the signal input to the multi-channel to maintain a constant impedance, while making it possible to economically produce a configuration for the signal compensation It is a technical problem to provide an impedance compensating device for communication equipment.

According to an aspect of the present invention,

A plurality of input terminals, a compensation mechanism for adjusting the impedance of the signal input to the input terminal, a controller for controlling the driving of the compensation mechanism by checking the signal input through the input terminal, and an output terminal for outputting the adjusted signal In the impedance compensation device,

The compensation mechanism includes a communication unit arranged to communicate with the input terminal and the output terminal; A communication piece fixedly movable to be detachable from the communication part or the output terminal, the communication piece being spaced apart from the communication part by the ball of the carcass; A pressing member having a rotating block of a magnetizable material, one end of which is rotatably fixed to press the communication piece; Permanent magnets facing the central portion of the rotating block and the one pole (N or S), the first and second cores magnetized to the opposite pole opposite to the one pole while facing the opposite ends of the rotating block, respectively, and the first and second cores. An electromagnet having first and second solenoids wound and electrically connected to a controller,

The controller is an impedance compensation device for controlling the energization of the first and second solenoids by checking the signal input of the input terminal.

According to the present invention, the compensation of impedance can be performed precisely while minimizing the material change due to factors such as the surrounding environment (temperature, humidity), and the compensation mechanism is easy to manufacture while forming a mechanical structure and structure, so that the impedance compensation The economic benefits of device fabrication can be expected.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

2 is a view schematically illustrating an impedance compensator according to the present invention, which will be described with reference to the drawing.

Impedance compensator 100 'according to the present invention includes a compensation mechanism 140 for compensating the impedance of the signal through a mechanical operation.

The compensation mechanism 140 has a plurality of communication pieces (143, 143 ', 143 ") is arranged to be radially communicated with the communication unit 142, the signal transmitted from the terminal portion 121 of the input terminal 120 It is possible to receive selectively, that is, both ends of the terminal portion 121 of the input terminal 120, the communication piece (143, 143 ', 143 ") of the compensation mechanism 140 and the terminal portion of the output terminal 170 ( The input terminal 120 and the compensating mechanism 140 are selectively communicated with each other via the communication unit 142 communicatively connected to the 171, thereby compensating for the impedance of the input signal through the input terminal 120. ) Can be kept constant.

Here, the compensation mechanism 140 selectively applies a resistance received by the signal to compensate for the impedance of the signal finally output to the output terminal 170, and thereby compensates the impedance of the signal output to the output terminal 170. do. In more detail, in order to compensate for the impedance of the input signal in which the voltage is lowered compared to the current as the number of input terminals 120 to which the signal is increased, the resistance of the terminal portion 171 of the output terminal 170 is differentially applied, thereby outputting the output. This is to compensate for the reduced impedance of the signal output through the terminal 170.

In the embodiment according to the present invention, three compensation communication pieces 143 and 143 'are applied for impedance compensation according to the number of four input terminals 120 to which signals are input and the input terminals 120 to which signals are input. , 143 "). For reference, the communication pieces 143, 143 ', and 143" are designed and applied to have different resistances, and the resistances of the output terminals 170 are variable.

At this time, each communication piece 143, 143 ′, 143 ″ selectively contacts the communication unit 142 under the control of the controller 150, and mechanically compensates the impedance of the signal output from the output terminal 170. To help.

Unexplained withdrawal number "143a, 143a '" is a "seating part" for supporting the communication service (143, 143', 143 "), the buffer for the rise and fall of the communication service (143, 143 ', 143") And grounding of the communication pieces 143, 143 ', and 143 ".

An "auxiliary resistor" is one that relatively supplements the resistance to compensate for the drop in excessive impedance. For reference, the communication pieces 143, 143 ′, and 143 ″ may be made of materials or sizes having different resistances and have different resistances, so that a sufficient resistance may be guaranteed in the relatively narrow body 111. 143, 143 ', 143 ") and auxiliary resistors may exhibit various arrangements.

3 and 4 are cross-sectional views showing an operation of the impedance compensator according to the present invention, which will be described with reference to the drawings.

Impedance compensator 100 ′ according to the present invention includes a case 110, a plurality of input terminals 120 connected to the case 110, and a compensation for compensating the impedance of a signal input to the input terminal 120. The mechanism 140, the controller 150 for controlling the driving of the compensation mechanism 140, the channel selection mechanism 160 for controlling the input of signals input from the plurality of input terminals 120, and the compensation mechanism 140 The output terminal 170 outputs an impedance-compensated signal at ().

The case 110 includes a main body 111 on which the input terminal 120 and the output terminal 170 are mounted, and first and second support 112 supported by the main body 111 while holding the compensating mechanism 140. 113, a pillar 114 interconnecting the first and second supports 112 and 113, a spacer 115 spaced apart from the first and second supports 112 and 113, and a compensation mechanism 140. And a cover 116 covering the upper portion of the main body 111 to receive and protect the controller 150 and the like.

Here, the first and second supports 112 and 113 are provided for structural binding and support of the compensation mechanism 140 according to the present invention, and may be formed integrally with the main body 111. In the case of the case 110, the shape, material, and structure of the case 110 may be variously modified as needed, and may be variously modified within the scope of the claims described below.

A plurality of input terminals 120 may be mounted on the main body 111 of the case 110, and the mounting position thereof is not limited to the shape shown in FIG.

The compensation mechanism 140 compensates the impedance of the signal input from the input terminal 120 according to a standard, and is removable from the terminal portion 171 of the output terminal 170 to adjust the resistance of the output terminal 170. And a communication piece 143 for contacting with each other, a pressurizing member 144 for pressurizing the lowering and lowering of the communication piece 143, and an electromagnet 145 for applying magnetic force for driving the pressurizing member 144.

The communication piece 143 is fixed to the first support 112 so that it can be lifted and lowered, and has a fixed shaft 143a protruding upwards, the carbbody 143b to be shot upward from the first support 112 It includes. At this time, since the terminal portion 171 of the output terminal 170 is located below the communication piece 143, the communication piece 143 is normally spaced apart upward from the terminal part 171 by the elasticity of the ball body 143b. Through this, the communication piece 143 and the terminal unit 171 are spaced apart from each other.

For reference, the terminal unit 171 of the center terminal unit 141 and the output terminal 170 is always communicatively connected by the communication unit 142.

The pressing member 144 includes a rotation block 144a which is rotatably fixed to the first support 112. At this time, one end of the rotation block (144a) around the rotation shaft is disposed on the fixed shaft 143a, it is possible to press the fixed shaft 143a according to the rotation direction of the rotation block (144a).

Since the rotation block 144a is driven by a change in magnetic force, it should be made of a magnetizable material.

On the other hand, the pressing member 144 may further include a leaf spring (144b). The leaf spring 144b is disposed between one end of the rotation block 144a and the fixed shaft 143a and rotates together with the rotation of the rotation block 144a. Therefore, when the pressing member 144 rotates and one end presses the fixed shaft 143a, the pressing is performed through the leaf spring 144b. When the rotation block 144a rotates by a predetermined angle or more to press the fixed shaft 143a, the leaf spring 144b continuously presses the fixed shaft 143a regardless of the rotation angle of the rotation block 144a. The communication piece 143 having the fixed shaft 143a is in contact with the terminal 171 of the output terminal 170 at all times.

The electromagnet 145 applies a magnetic force necessary for the rotation of the pressing member 144, a pair of first and second magnets 145a disposed to face each other and the permanent magnets 145a for magnetizing the rotation block. Cores 145b and 145b 'and first and second solenoids 145c and 145c' wound around the first and second cores 145b and 145b ', respectively, and are spaced apart from the pressing member 144 above. It is fixed to the second support 113 to. For reference, the second support 113 is spaced apart above the first support 112, it is firmly fixed by the pillar (114). In addition, the spacers 115 may be arranged to support the first and second supports 112 and 113 so that the mutual separation distance between the first and second supports 112 and 113 is kept constant. The present embodiment described as a reference suggests one means for spaced apart and fixed of the first and second supports 112 and 113, and may be variously modified within the scope of the following claims. Of course.

As described above, the electromagnet 145 operates the rotation block 144a to allow the communication piece 143 to rise and fall, and the first wound around the first and second cores 145b and 145b ', respectively. The rotation direction of the rotation block 144a is determined depending on which of the first and second solenoids 145c and 145c 'of the two solenoids 145c and 145c' is supplied with electricity.

In more detail, the first and second cores 145b and 145b 'are magnetized by the permanent magnet 145a. For example, when the poles of the permanent magnets 145a become 'N' and 'S' up and down, the first and second cores 145b and 145b spaced apart from the permanent magnets 145a are magnetized to 'N'.

Meanwhile, the central portion of the rotation block 144a adjacent to 'S' of the permanent magnet 145a is magnetized to 'N', and both ends of the rotation block 144a are magnetized to 'S', respectively. As a result, the permanent magnet 145a and the first and second cores 145b and 145b 'apply an attractive force to the rotation block 144a. Thereafter, when sufficient current is temporarily supplied to the second solenoid 145c ′ under the control of the controller 150, the second core 145b ′ has magnetism of 'S'. Of course, the polarity may be adjusted by controlling the winding direction and the energization direction of the second solenoid 145c '.

Subsequently, the second core 145b magnetized to 'S' applies a repulsive force to one end of the rotation block 144a magnetized to 'S' and rotates it clockwise. Of course, the other end magnetized to 'S' is adjacent to the first core 145b magnetized to 'N' while being in contact with the attraction force, and maintains the current state by the continuous magnetic force. On the other hand, the communication piece 143 under pressure on the other end of the rotation block 144a moves downward to contact the terminal part 171 of the output terminal 170, through which the resistance of the communication piece 143 is connected to the terminal part. It is included in the resistance of 171.

Thereafter, when sufficient current is temporarily supplied to the first and second solenoids 145c and 145c 'under the control of the controller 150, the first and second cores 145b and 145b' rotate while having a magnetism of 'S'. Repulsive force is applied to both ends of the block 144a, and the revolving block 144a is returned to the horizontal state by the repulsive force.

Of course, the communication piece 143 is moved up and down by the elastic force of the carcass 143b, and is separated from the terminal portion 171 of the output terminal 170.

The controller 150 controls the operation of the compensation mechanism 140 and / or the channel selection mechanism 160 in response to a signal of the input terminal 120 or a separate control signal, and the like. It will control whether the solenoids 145c and 145c 'are energized.

The channel selector 160 checks the input terminal 120 to which a signal is input and controls the communication with the output terminal. The same principle and structure as the compensating mechanism 140 according to the present invention can be applied. Thus, the structure of the channel selection mechanism 160 is replaced with the description of the compensation mechanism 140.

The description number "P" is a "power line" for supplying power for driving the compensation mechanism 140, the controller 150, the channel selection mechanism 160 and the like.

5 is a view showing an operation of the impedance compensator according to the present invention, it will be described with reference to this.

Impedance compensator 100 ′ according to the present invention checks the number of input terminals 120 to which a signal is input so that the compensation mechanism 140 is driven according to the set value, and may be driven as follows. .

FIG. 5 (a) shows the driving mode of the compensation mechanism 140 when a signal is input from one input terminal 120. Here, as shown in FIG. 3, the communication pieces 143 and 163 of the compensator 140 and / or the channel selector 160 are connected to the terminal portion 121, of the input terminal 120 and the output terminal 170. As shown in FIG. 4, the solid line means a state in which the terminal parts 121 and 171 and the communication pieces 143 and 163 are in contact with each other.

When a signal is input from one input terminal 120, the compensation mechanism 140 does not operate because the impedance standard is maintained at 50 ohms, and the input signal is output as it is through the output terminal 170.

FIG. 5 (b) shows the driving mechanism of the compensation mechanism 140 when signals are input from two input terminals 120.

When a signal is input from the two input terminals 120, the impedance will be lower than the impedance standard of 50 ohms, so that the compensating unit 140 sends the communication piece 143 to the terminal portion of the output terminal 170 to compensate for the lowered impedance. (171).

FIG. 5 (c) illustrates the driving mechanism of the compensation mechanism 140 when signals are input from the three input terminals 120.

When a signal is input from the three input terminals 120, the impedance will be lower than when the signal is input from the two input terminals 120, so that the compensation mechanism 140 has a relatively large resistance to compensate for the lowered impedance. The communication piece 143 'is brought into contact with the terminal portion 171 of the output terminal 170.

FIG. 5 (d) illustrates the driving mechanism of the compensation mechanism 140 when signals are input from four input terminals 120.

When a signal is input from the four input terminals 120, since the signal from the three input terminals 120 will have a lower impedance than when the signal is input, the compensation mechanism 140 has a relatively low resistance to compensate for the lowered impedance. The large communication piece 143 ″ is brought into contact with the terminal portion 171 of the output terminal 170.

The number of communication pieces 143, 143 ', 143 "provided by the compensation mechanism 140 according to the present invention may be added to or subtracted from the number of communication pieces 143, 143', 143" included in the embodiment. .

1 is a view schematically showing a state of a conventional impedance compensator,

2 is a view schematically showing the appearance of an impedance compensator according to the present invention;

3 and 4 are cross-sectional views showing the operation of the impedance compensator according to the present invention,

5 is a view showing an operation of the impedance compensator according to the present invention.

-Explanation of terms for main parts of attached drawings-

100, 100 '; An impedance compensator 110; Case 120; Input terminal

130, 140; Compensation mechanism 150; Controller

160; Channel selector 170; Output terminal

Claims (5)

A plurality of input terminals 120, a compensation mechanism 140 for adjusting the impedance of the signal input to the input terminal 120 and the signal input through the input terminal 120 to confirm the drive of the compensation mechanism 140 In the impedance compensation device 100 including a controller 150 for controlling, and an output terminal 170 for outputting the adjusted signal, The compensation mechanism 140, the communication unit 142 is disposed to communicate with the input terminal 120 and the output terminal 170; A communication piece 143 fixedly movably to be detachable from the communication unit 142 or the output terminal 170 and spaced apart from the communication unit 142 by the ball of the ball body 143b; A pressing member 144 having a rotating block 144a of a magnetizable material, one end of which is rotatably fixed to press the communication piece 143; The first and second magnets are magnetized to the opposite poles opposite to the one poles while facing the permanent magnets 145a facing the center of the rotating block 144a and the one pole N or S, respectively. Electromagnet 145 having cores 145b and 145b 'and first and second solenoids 145c and 145c' wound on the first and second cores 145b and 145b 'and electrically connected to the controller 150. ), The controller 150 controls the energization of the first and second solenoids (145c, 145c ') by checking the signal input of the input terminal (120). The method of claim 1, The communication piece 143, the pressing member 144 and the electromagnet 145 is provided with a plurality of pieces configured to operate individually, the communication piece 143 is an impedance compensation device, characterized in that each has a different resistance. The method of claim 1, Impedance compensation device further comprises an auxiliary resistor to increase the resistance by the reinforcement is installed so that the communication piece 143 is in contact with the communication unit 142 or the output terminal (170). The method of claim 1, The pressing member (144) further comprises an impedance compensating device further comprising a leaf spring (144b) for supporting the communication piece (143) when the communication piece (143) is pressed. The method of claim 1, Further comprising a channel selection mechanism 160 for controlling a plurality of the input terminal 120 and the communication unit 143 to selectively communicate, The channel selection mechanism 160 includes: a communication piece fixedly movable so as to be detachable from the input terminal 120 and the communication unit 142, and spaced apart from the communication unit 142 by a ball of bullet; A pressing member having a rotating block of a magnetizable material, one end of which is rotatably fixed to press the communication piece; Permanent magnets facing the central portion of the rotating block and the one pole (N or S), the first and second cores magnetized to the other pole opposite to the one pole while facing the opposite ends of the rotating block, respectively, and the first and second cores An electromagnet having first and second solenoids wound around and electrically connected to the controller 150, The controller 150 controls the energization of the first and second solenoids of the channel selection mechanism 160 according to the set information.

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