KR19990001810A - Irreversible device and its manufacturing method - Google Patents

Abstract

The present invention relates to an irreversible device having an auxiliary terminal for supporting an internal terminal made of a flexible printed circuit board (FPC), comprising a body case having an input / output terminal and a ground terminal, and between an input / output terminal and ground, respectively. Form three radial conductors with a cross angle of 120 degrees using an input / output capacitor connected to each other, a ground capacitor and ground resistance connected in parallel to the ground terminal, and a circular flexible printed circuit board (FPC). The signal from the input terminal is transmitted to the output terminal and the signal reflected from the output terminal is transmitted to the ground terminal, and it is perpendicular to the bottom surface at the point where it is the vertex of the equilateral triangle of the circular bottom surface and the edge of the bottom surface Auxiliary terminal that consists of three terminals, which supports the internal terminal at a certain height from the body case, and the inside of the auxiliary terminal Garnet ferrite (GARNET FERRITE) that is mounted and acts as a micro device, and is installed on top of the inner terminal, characterized in that it comprises a permanent magnet generating a static magnetic field and a cover case surrounding the permanent magnet, Easily connected to the terminal improves workability, uniform grounding of parts, improve the solderability of the internal terminal, and has the effect of obtaining a uniform electromagnetic characteristics by suppressing the flow of garnet ferrite. .

Description

Irreversible device and its manufacturing method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an irreversible device, and more particularly, to an irreversible device having an auxiliary terminal supporting an internal terminal made of a flexible printed circuit board (FPC) and a method of manufacturing the same.

FIG. 1 is a block diagram showing a part of a system including a non-reciprocal element, and as shown here, a low pass filter (LOW) after the transmission signal Tx is amplified by a power amplifier module 15. PASS FILTER 14 is filtered and sent to the antenna 11 through the antenna switch 12 and sent out from the antenna (11). The received signal Rx receives airwaves from the antenna 11 and receives the filtered signals of a specific frequency band from the band pass filter 16 through the antenna switch 12. In general, the irreversible element 13 is inserted between the power amplifier module 15 and the antenna switch 12 of the wireless device to absorb the signal source reflected from the antenna switch 12 to protect the power amplifier module 15. .

FIG. 2 is a circuit diagram showing a basic equivalent circuit of an irreversible element. As shown here, an input terminal is coupled with an output of a power amplifier module 15 of a transmission unit so that a high frequency transmission signal Tx is input and an input terminal is also provided. The high frequency transmission signal Tx input and connected to the internal terminal 22 is transmitted to the internal terminal 22. An input capacitor C1 is connected between the input terminal and the ground. The output terminal is connected to the internal terminal 22 and the output terminal is connected to the antenna switch 12 so that the input high frequency signal is finally transmitted through the antenna 11. The output capacitor C2 is also connected between the output terminal and ground. A ground capacitor C3 and a terminating resistor R of 50 Ω are connected in parallel between the internal terminal 22 and the ground. The signal transmitted from the power amplifier module 15 through the input terminal and transmitted to the output terminal through the internal terminal transfers the signal from the antenna switch 12 connected to the output terminal to return to the input unit. Sink to ground through terminating resistor (R). Therefore, the irreversible element 13 removes the carrier power to prevent the power amplifier module 15 from being damaged by the power of the signal being conveyed, thereby protecting the power amplifier module 15.

The irreversible elements are combined in an electromagnetic relationship and require high insertion loss and low insertion loss in the high frequency region. 3 is a block diagram showing the detailed structure of the irreversible device. As shown here, the structure of the device includes a body case 31 in which a ground terminal 311 and an input / output terminal 312 are formed, and respective terminals. And a capacitor 32 coupled to the terminal, a terminating resistor 33 forming a ground resistance, an internal terminal 34 for transmitting a signal of an input terminal to an output terminal and sinking a carrier signal of the output terminal to the ground terminal; A resin case for supporting the permanent magnet 35 generating the system, the garnet ferrite 37 serving as a micro device, and the permanent magnet 35 and garnet ferrite 37 up and down. It consists of 37 and the cover case 38. As shown in FIG.

The internal terminals 34 constituting the irreversible elements shown in FIG. 3 have independent terminal structures having an angle of 120 degrees to each other, and Japanese Laid-Open Publication Nos. 55-123220, 57-26912, 5-5-206, and Flat 5 As described in -315814 and the like, the structure is combined with garnet ferrite using a terminal frame. In some cases, the lower case may be deformed to induce coupling between terminals, but the coupling part may be formed of terminals to form an intersection angle.

The internal terminal 34 of the conventional irreversible device has a structure in which magnetic terminals are formed in the middle while the independent terminals form an intersection angle of 120 degrees. This structure has a lot of workmanship and components, and the twisting of the crossing angle occurs during assembly, and the twisting of the crossing angle affects the high frequency magnetic field induced when the static magnetic field is applied. It is difficult to secure the reliability of the high frequency characteristics of the product due to instability of the insulator structure that insulates the terminals using a circular insulating thin film, and in particular, it is difficult to make the product slim. In addition, since the internal terminals of the irreversible elements are crossed in a geometric relationship, there is a problem that automation of production is very difficult.

In order to overcome this problem, when internal terminals are formed on a ceramic substrate and stacked on the ceramic substrate as in Japanese Patent Application Laid-Open No. 7-307603, the magnetic element causes magnetic resistance when the lower magnetic field is applied, so that the magnetic field is reduced. In the case of Japanese Unexamined Patent Publication No. 5-82109, the shape of the internal terminal taking the form of maintaining the distance between the center conductors cannot be regarded as maintaining the gap between the complete terminals. A bent portion is formed in the device so that the terminal is correctly positioned, but this method has a problem in that productivity and device deformation are inevitably generated because the terminal must be inserted in a narrow space.

The present invention is to solve such a conventional problem, an object of the present invention is to construct an internal terminal consisting of a laminated thin film using an FPCI (FLEXIBLE PRINTED CIRCUIT) substrate and to install an auxiliary terminal for supporting the internal terminal cross It is to provide an irreversible device having a small angle error, ensuring insulation between the cross terminals, and reducing resistance (R) at high frequencies due to a reduction in the thickness of the laminate, and having a low insertion loss.

In addition, an object of the present invention is to provide a method for manufacturing an irreversible device that can reduce the production cost and shorten the process by increasing the productivity by configuring the internal terminal using FPC (FLEXIBLE PRINTED CIRCUIT).

1 is a block diagram illustrating some components of a system including an irreversible device (ISOLATOR).

2 is a circuit diagram showing a basic equivalent circuit of an irreversible element.

3 is a block diagram showing a detailed structure of a conventional irreversible device.

4 is a configuration diagram showing the configuration of the irreversible device according to the present invention.

Figure 5 shows another embodiment in the present invention (a) is a plan view of the body case, (b) is a view showing a state in which the auxiliary terminal is coupled to the body case.

6 shows the auxiliary terminals shown in FIG. 4, wherein (a) and (b) are plan views, and (c) is a front view.

7 is a diagram illustrating the terminal shape of the auxiliary terminal shown in FIG. 6, (a) shows a one-terminal shape, (b) shows a two-terminal terminal type, and (c) shows a one-terminal composite type.

8 (a) is a plan view showing a state in which the auxiliary terminal and garnet ferrite (GARNET FERRITE) is stacked on the body case, (b) is a state in which the auxiliary terminal, garnet ferrite, capacitors and resistors are stacked on the body case. One floor plan.

9 is a view illustrating a state in which the auxiliary terminal, the garnet ferrite, and the inner terminal are coupled, (a) is a perspective view, and (b) is a sectional view.

Explanation of symbols on the main parts of the drawings

41: body case 411: ground terminal

412: input / output terminal 42: capacitor

43: grounding resistance 44: internal terminal

45: garnet ferrite

47: permanent magnet 48: cover case

49: auxiliary terminal

In order to achieve the above object, the present invention is inserted between the power amplifier module (POWER AMP MOEULE) and the antenna switch (ANTENNA SWITCH) of the wireless device to transfer the signal output from the power amplifier module to the antenna switch and reflected from the antenna switch An irreversible device (ISOLATOR) that absorbs a signal and protects a power amplifier module, comprising: a body case 41 having an input / output terminal and a ground terminal, and an input / output capacitor connected between the input / output terminal and ground, respectively. (42), a ground capacitor (42) and a ground resistor (43) connected by parallel connection connected to the ground terminal, and a circular FPC (FLEXIBLE PRINTED CIRCUIT) substrate using a circular angle having a cross angle of 120 degrees with each other. Form three wires to transmit the signal of the input terminal to the output terminal and the signal reflected from the output terminal to the internal terminal 44, the circular bottom surface, bar Auxiliary terminal that consists of three terminals vertically placed on the floor at the position of the vertex of the equilateral triangle among the edges of the surface, and an auxiliary terminal for supporting the internal terminal at a certain height from the body case, and an auxiliary terminal 49 and the auxiliary terminal erected GARNET FERRITE 45, which is mounted inside of and serves as a micro device, and permanent magnets 47, which are installed on top of internal terminals to generate a static magnetic field, and cover cases surrounding the permanent magnets, 48 It is characterized by comprising:

In order to achieve the above object, the present invention is inserted between the power amplifier module and the antenna switch of the wireless device to transfer the signal output from the power amplifier module to the antenna switch and absorbs the signal reflected from the antenna switch to power amplifier module A method of manufacturing a non-reversible device for protection, comprising the steps of (1) forming an input / output terminal and a ground terminal in a body case, and (2) three terminals perpendicular to the circular bottom surface at the positions of vertices of an equilateral triangle. Installing an auxiliary terminal on the lower surface of the body case, (3) mounting a garnet ferrite serving as a micro device inside the auxiliary terminal installed in the step (2), and (4) ( Connect the input / output capacitor at the input / output terminal formed in step 1) and connect the ground capacitor and ground resistance in parallel to the ground terminal. And (5) printing the three conductors in the radial direction of the circular FPC (FLEXIBLE PRINTED CIRCUIT) substrate to have a cross angle of 120 degrees with each other, and placing them on the auxiliary terminals installed in the step (2) and combining them, (6 (5) characterized in that it comprises the step of installing a permanent magnet generating a static magnetic field on the stacked FPC board, and covering the top of the installed permanent magnet with a cover case.

Hereinafter, the configuration and operation of the embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

4 is a block diagram showing the configuration of the irreversible device, as shown here, a non-reversible device is inserted between the power amplifier module and the antenna switch of the wireless device to transfer the signal output from the power amplifier module to the antenna switch and antenna switch To protect the power amplifier module by absorbing the signal reflected from the body case 41, garnet ferrite 45, capacitor 42, resistor 43, internal terminal 44, magnet 47, cover case ( 48, and an auxiliary terminal 49 is provided.

The body case 41 is provided with an input / output terminal 412 and a ground terminal 411 so that the input terminal is coupled to the output of the power amplifier module of the transmitter to input the high frequency transmission signal Tx to the internal terminal 44. To pass. The output terminal is connected to the input of the antenna switch and receives the high frequency signal input through the input terminal through the internal terminal 44 and finally transmits to the antenna. An auxiliary terminal 49 for supporting the inner terminal 44 at a predetermined height from the body case 41 is installed at an upper portion of the body case 41. As shown in FIG. Above). Figure 5 shows another embodiment according to the present invention, (a) is a plan view of the body case punched three holes in the lower surface of the body case corresponding to the three terminals in the auxiliary terminal, (b ) Is a structural diagram showing the auxiliary terminal coupled to the body case. In another embodiment of the body case as shown here, three terminals may pass through each of the positions corresponding to the three terminals in the auxiliary terminal in the position where the auxiliary terminal is installed in the lower surface of the body case 51. The three terminals 511 are drilled to allow the auxiliary terminal 59 to be coupled from the outside (bottom) of the body case 51 to the inside (top).

The auxiliary terminal consists of a circular bottom surface and three terminals erected perpendicularly to the bottom surface at the position of the vertex of the equilateral triangle among the edges of the bottom surface, and serves to support the inner terminal at a certain height from the body case. Figure 6 shows the auxiliary terminal (a) and (b) is a plan view showing the three terminals formed on the same plane with respect to the circular bottom surface, (c) is a three terminal circular bottom It is a figure which shows the state standing perpendicular to the plane. As shown here, in one embodiment of the auxiliary terminal, the three terminals protrude outward from the position of the vertex of the equilateral triangle of the edge of the circular bottom surface 61, so that the protrusion 62 is pulled up It is formed by standing perpendicular to the floor. In another embodiment of the auxiliary terminal, the bottom surface is cut inward at the position where the three terminals are the vertices of the equilateral triangle among the edges of the circular bottom surface 63, so that the cut-out portion 64 is bent upward to the bottom. It can be formed by standing perpendicular to the plane. In the auxiliary terminal, the three terminal shapes perpendicular to the floor at the position of the vertex of the equilateral triangle among the edges of the circular bottom surface may be a single terminal type, a two terminal type, or a single terminal type type. 7 shows the shape of such a terminal, (a) shows a one-terminal shape, (b) shows a two-terminal shape, and (c) shows a one-terminal composite type.

8 (a) is a plan view showing a state in which the auxiliary terminal and the garnet ferrite is stacked on the body case, Figure 8 (b) is a plan view showing a state in which the auxiliary terminal, garnet ferrite and the capacitor and the resistor is stacked on the body case. As shown here, it connects the input / output capacitor 821 between the input / output terminal 812 and the ground, respectively, as shown in the equivalent circuit of FIG. 2, and the ground capacitor (811) to the ground terminal 811. 822 and a 50Ω ground resistor 83 are connected in parallel. The garnet ferrite 85, which functions as a micro device, is mounted inside the auxiliary terminal 89, and the garnet ferrite 85 thus mounted is surrounded by the auxiliary terminal 89 mounted on the lower surface of the body case. Therefore, the flow of the garnet ferrite 85 is prevented by the auxiliary terminal 89 so that it can always be present in the uniform sperm generated by the magnet.

The inner terminal is formed by using three circular FPC (FLEXIBLE PRINTED CIRCUIT) substrates so that three conductors printed in the radial direction have a cross angle of 120 degrees to each other, and one end of each conductor is provided on the lower surface of the body case. A first connecting portion connected to the terminal is provided, and the other end portion is provided with a second connecting portion for connecting to a terminal formed in the body case. The first connection is soldered to each of the three terminals vertically connected to the bottom of the auxiliary terminal, and the second connection is also soldered to the input / output terminal and the ground terminal of the body case. The second connection part installed on the lead wire is directly connected to the input terminal of the input capacitor and the body case by soldering, and the second connection part installed on the lead wire on the path where the signal is outputted is directly connected to the output terminal of the output capacitor and the body case by soldering. The second connection part installed in the conductive line on the path for sinking the signal reflected from the output terminal is connected to the ground terminal through a ground capacitor and a ground resistor connected in parallel.

9 is a view illustrating a coupling state of the auxiliary terminal, the garnet ferrite and the internal terminal, (a) is a perspective view, and (b) is a sectional view. As shown here, the garnet ferrite is positioned between the auxiliary terminal and the inner terminal, and in particular, in FIG. 9 (b), three terminals vertically perpendicular to the circular bottom surface of the auxiliary terminal 99 are bent in the middle. The garnet ferrite 95 formed between the auxiliary terminal 99 and the inner terminal 94 to prevent the flow in the horizontal direction by the auxiliary terminal is formed as well as (100) to prevent the flow in the vertical direction It shows the effect.

The upper portion of the inner terminal 44 is provided with a permanent magnet 47 generating a static magnetic field to surround the permanent magnet with a cover case 48.

Hereinafter, a method of manufacturing the irreversible device according to the present invention will be described in detail.

In order to manufacture an irreversible device that protects a power amplifier module by inserting it into a power amplifier module and an antenna switch of a wireless device and transmitting the signal output from the power amplifier module to the antenna switch and absorbing the signal reflected from the antenna switch (1) Form the input / output terminal and ground terminal in the body case. The input terminal is combined with the output of the power amplifier module of the transmitter to transmit the input high frequency transmission signal Tx to the internal terminal. The output terminal is connected to the input of the antenna switch and receives the high frequency signal inputted through the input terminal through the internal terminal and finally transmits to the antenna. For another embodiment according to the present invention in the position where the auxiliary terminal is installed in the lower surface of the body case corresponding to the three terminals in the auxiliary terminal by drilling three holes each through which three terminals can pass To be coupled from the outside (bottom) of the body case to the inside (top).

(2) It consists of three terminals vertically placed on the floor at the position of the vertex of the equilateral triangle among the edges of the bottom and the bottom of the bottom to support the inner terminal at a certain height from the body case. To the body case. The auxiliary terminal can be formed by three terminals protruding outward from the position of the vertex of the equilateral triangle among the edges of the circular bottom surface, and the protrusions are raised vertically to stand on the bottom surface. In addition, the auxiliary terminal may be formed by the bottom surface is cut inward from the position where the three terminals are the vertices of the equilateral triangle among the edges of the circular bottom surface and can be formed by raising the cut-out part upright and standing perpendicular to the bottom surface. . In the auxiliary terminal, the shape of the three terminals perpendicular to the floor at the position of the vertex of the equilateral triangle among the edges of the circular bottom may be one-terminal, two-terminal, or one-terminal composite.

Next, garnet ferrite serving as a micro device is mounted inside the auxiliary terminal mounted in the step (3) and (2). When garnet ferrite is installed inside the auxiliary terminal, which is a micro device, the garnet ferrite is surrounded by the auxiliary terminal, so the flow of garnet ferrite is prevented by this auxiliary terminal and uniform sperm is generated by the magnet. It will always be present in the continuation. In addition, three terminals vertically formed on the bottom surface of the auxiliary terminal form a bent portion in the middle to prevent the flow of the garnet ferrite positioned between the auxiliary terminal and the inner terminal in the horizontal direction by the auxiliary terminal. Flow in the vertical direction can be prevented.

Next, connect the input / output capacitors to the input / output terminals formed in step (4) and (1), and connect the ground capacitor (C3) and ground resistance in parallel to the ground terminal. As shown in the equivalent circuit of FIG. 2, the input / output capacitor is connected between the input / output terminal and the ground, respectively, and the ground capacitor C3 and the ground resistance of 50Ω are connected in parallel between the ground terminal and the internal terminal.

Next, (5) the three conductors in the radial direction of the circular FPC (FLEXIBLE PRINTED CIRCUIT) substrate are printed so as to have a cross angle of 120 degrees to each other and placed on the auxiliary terminal installed in step (2). One end of each wire is provided with a first connection part connected to the auxiliary terminal, and the other end of the wire is provided with a second connection part which connects to a terminal formed in the body case, and the first connection part and the auxiliary terminal are brought into position. Align and solder. The second connection part of the second connection part installed on the conductor connected to the input / output terminal of the body case is extended to the input / output terminal of the body case and connected to the input / output capacitor and the input / output terminal. The second connector is connected to the input / output terminal of the body case and the ground terminal. The second connector, which is installed on the conductor on the signal input path, is directly connected to the input capacitor and the input terminal of the body case by soldering, and the signal is output. The second connector, which is installed on the conductor on the path, is also directly connected to the output capacitor and the output terminal of the body case, and the second connector, which is installed on the conductor on the path, which sinks the signal reflected from the output terminal, is connected in parallel with the ground capacitor. Connect with ground terminal through grounding resistance.

Next, a permanent magnet generating a static magnetic field is installed on the FPC substrate stacked in the steps (6) and (5), and the cover case is covered to surround the installed permanent magnet.

As such, the present invention can be easily connected to the internal terminal composed of FPC by using the auxiliary terminal to improve the workability, uniform grounding of the parts and to improve the solderability of the internal terminal as well as the By suppressing fluidity, it is possible to obtain uniform electromagnetic characteristics.

Claims (8)

Inserted between the power amplifier module and antenna switch of the wireless device to transmit the signal output from the power amplifier module to the antenna switch to absorb the signal reflected from the antenna switch to protect the power amplifier module In the irreversible device (ISOLATOR), A body case having an input / output terminal and a ground terminal formed thereon; An input / output capacitor connected between the input / output terminal and ground, respectively; A ground capacitor and ground resistance connected to the ground terminal in parallel; Using a circular FPC (FLEXIBLE PRINTED CIRCUIT) substrate, three conductors in a radial direction having a cross angle of 120 degrees are formed to transfer signals of the input terminal to the output terminal, and the signal reflected from the output terminal is the ground. Internal terminal to deliver to the terminal, An auxiliary terminal for supporting the inner terminal at a predetermined height from the body case, comprising a circular bottom surface and three terminals perpendicular to the bottom surface at a position of a vertex of an equilateral triangle among edges of the bottom surface; , Garnet ferrite (GARNET FERRITE) which is mounted inside the auxiliary terminal and serves as a micro device, A permanent magnet installed on the inner terminal and generating a static magnetic field; Non-reversible device characterized in that it comprises a cover case surrounding the permanent magnet The method of claim 1, wherein the body case, Non-reciprocal device, characterized in that the auxiliary terminal is coupled to the inside from the outside of the body case by drilling three holes in the position corresponding to the three terminals of the auxiliary terminal in the lower surface. The method of claim 1, wherein the auxiliary terminal, An irreversible device characterized in that three terminals protrude outward from the position of the vertex of the equilateral triangle among the edges of the circular bottom surface, and the protrusion is pulled upward to stand vertically on the bottom surface. The method of claim 1, wherein the auxiliary terminal, A non-reciprocal device, characterized in that the bottom surface is cut inward at a position where three terminals are the vertices of an equilateral triangle among the edges of a circular bottom surface, and the vertically fold up the cut-out portion to be perpendicular to the bottom surface. The method of claim 1, wherein the auxiliary terminal, A non-reciprocal element, characterized in that the shape of the three terminals perpendicular to the bottom surface is any one of a one-terminal, two-terminal or one-terminal composite type. The method of claim 1, wherein the auxiliary terminal, An irreversible element characterized in that the bent portion for suppressing the flow of the garnet ferrite is formed in three terminals perpendicular to the bottom surface. In the manufacturing method of the irreversible device inserted between the power amplifier module and the antenna switch of the wireless device to transmit the signal output from the power amplifier module to the antenna switch and absorbs the signal reflected from the antenna switch to protect the power amplifier module, (1) forming an input / output terminal and a ground terminal in the body case; (2) installing an auxiliary terminal on the lower surface of the body case in which three terminals are erected perpendicular to the circular bottom surface at positions of vertices of equilateral triangles; (3) mounting a garnet ferrite serving as a micro device inside the auxiliary terminal installed in the step (2); (4) connecting an input / output capacitor to the input / output terminal formed in step (1) and connecting a ground capacitor and a ground resistance in parallel to the ground terminal; (5) printing the three conductors in a radial direction of a circular FPC (FLEXIBLE PRINTED CIRCUIT) substrate to have a cross angle of 120 degrees to each other, and placing them on the auxiliary terminals installed in the step (2) to combine them; (6) a method of manufacturing an irreversible device, characterized in that it comprises the step of installing a permanent magnet generating a static magnetic field on the FPC substrate stacked in the step (5), and wrapped in a Witch cover case of the permanent magnet installed. According to claim 7, wherein the step (1), And a step of drilling three holes at a vertex of an equilateral triangle on a lower surface of the body case such that the auxiliary terminal is coupled from the outside to the inside of the body case.