KR102437893B1 - Irreversible element with resonant circuit - Google Patents

Abstract

The present invention relates to an irreversible element having a resonant circuit.
The irreversible element of the present invention includes a bottom part and a housing extending in a direction perpendicular to the bottom part, the housing including a plurality of sidewall parts separated by a plurality of openings, and a plurality of connection terminals extending outside the plurality of openings. a strip provided with the strips, located between the strip and the bottom of the housing, and extending outwardly from the body portion and the plurality of openings from the body portion to overlap the plurality of connection terminals an insulating guide including a plurality of supporting parts and a plurality of connection pins connected to the plurality of connection terminals, the body portion of the insulation guide and the plurality of connection terminals having a resonance circuit having a planar shape.

Description

Irreversible element with resonant circuit

The present invention relates to an irreversible element having a resonant circuit.

An irreversible circuit refers to an electric circuit configured so that the input and output terminals cannot be used in reverse. Circuits including active elements such as transistors and vacuum tubes are usually irreversible circuits, but there may be irreversible circuits with passive elements. .

A circulator, which is one of the irreversible circuit elements, is commonly used as an isolator, but it is also possible to use it instead of a duplexer in a transceiver.

An isolator is a passive circuit component with irreversible characteristics using the microwave diffraction phenomenon of ferrite. It is mainly used in mobile communication systems to perform functions such as stabilizing the power amplifier, matching impedance, and removing reflected waves, thereby helping to stabilize the system. It is an element that plays an important role.

The isolator is applied to mobile communication terminals and repeaters and can be divided into a lumped element type device suitable for miniaturization and a distributed element type device applied to a high power system such as a base station.

In general, there are various structures of the isolator, but a method of terminating one port of the circulator is mainly used.

Such isolators are classified into a coaxial type, a drop-in type, a waveguide type, and a lumped element type according to their shape.

A drop-in isolator is a distributed constant type device, and is generally implemented in a stripline Y junction type. Such a Y-junction drop-in isolator is advantageous for a high-output system compared to a lumped-integer device, and has good characteristics such as insertion loss and isolation, and can be easily broadened.

As an example, an irreversible circuit element may be used as shown in FIG. 1 .

1 is a view showing a transmitting end of a general wireless communication equipment.

As shown in FIG. 1 , the transmitting end of a general wireless communication equipment may be composed of a bandpass filter 1 that passes a transmission band, a power amplifier 2 , a circulator 3 and an antenna 4 .

Here, the circulator 3 may be used as an isolator. Hereinafter, a case in which the circulator 3 is used as an isolator will be described as an example.

A frequency band of a predetermined signal is passed through the band pass filter 1 , and the passed signal is amplified through the power amplifier 2 and transmitted through the antenna 4 .

At this time, when a reverse signal is input through the antenna 4 or a reflected wave of the transmitted signal is input, a malfunction of the transmission equipment may be caused or the power amplifier 2 may be damaged.

Therefore, the circulator 3 used as an isolator is configured in the next stage of the power amplifier 2 to solve this problem, and performs a function of blocking the reflected wave of the reverse signal or the transmitted signal received from the antenna 4 do.

Fig. 2 (a) is a view for implementing a general circulator, and Fig. 2 (b) is a view showing an isolator operation by attaching a resistor to one side of a port of the circulator.

Referring to the circulator shown in (a) of FIG. 2, a signal input to port 1 is output to port 2, and a signal input to port 2 is output to port 3. And, the signal input to port 3 is output to port 1 to perform a cyclic circulator operation.

And, the isolator (Isolator) shown in (b) of Figure 2 is a view showing the isolator operation by attaching a terminating resistor (R) to any one port (port) of the circulator (Circulator). As a random port, a terminating resistor (R) is attached to one side of port 3, and the signal input to port 2 is removed by the terminating resistor (R) and is not output from Port 1.

That is, the reverse signal input from Port 2 is not output from Port 1, and it can be cleanly removed from the matched termination using the resistance of the same characteristic impedance.

For this reason, a circulator used as an isolator is often used for matching.

An object of the present invention is to provide an irreversible element having a resonant circuit, and more specifically, to provide an irreversible element having a resonant circuit capable of further improving the function, and there is an object of the present invention.

An irreversible element having a resonance circuit according to an example of the present invention includes: a housing including a bottom portion and a plurality of sidewall portions extending in a direction perpendicular to the bottom portion and separated by a plurality of openings; a strip having a plurality of connection terminals extending outside the plurality of openings; an insulating guide positioned between the strip and the bottom of the housing and extending outwardly of the plurality of openings from the body portion having a central opening hole and having a plurality of support portions overlapped with the plurality of connection terminals; and a plurality of connection pins connected to the plurality of connection terminals, wherein the body portion of the insulation guide and the plurality of connection terminals have a planar shape.

A portion in which the cutouts abut on the bottom of the housing may include a cutout in which the bottom is recessed inward in a horizontal direction.

The plurality of support portions provided on the insulation guide may be vertically spaced apart from the plurality of connection terminals.

A connection hole may be provided in the plurality of support portions, and the connection pins may include a resonance circuit connected to the plurality of connection terminals through the connection hole.

An empty space may be provided to be spaced apart from each other between each of the plurality of connection pins and the detached portion of the housing bottom, and the empty space may be exposed to the outside.

The plurality of connection terminals may have a through hole, and the plurality of connection pins may be connected to the plurality of connection terminals by passing through the through hole provided in the connection terminals.

A lower portion of the strip may include ferrite, a lower electrode plate, and a lower garnet, and an upper portion of the strip may include an upper garnet and an upper electrode plate.

The ferrite is seated in the central opening of the insulating guide, the lower plate is positioned on the upper surface of the insulating guide to cover the central opening of the insulating guide, and the lower garnet and the strip are sequentially arranged on the lower plate. can be stacked.

A vertical separation distance between the plurality of support portions provided on the insulation guide and the plurality of connection terminals may be greater than a thickness of the lower garnet.

A magnet, a temperature compensation plate, a top plate, and a cover may be sequentially stacked on the upper electrode plate.

It may further include; a fixing part surrounding the outer surfaces of the housing side wall parts in a horizontal direction and preventing the side wall parts from being spread apart.

Concave-convex portions may be formed on outer surfaces of the sidewall portions of the housing in a horizontal direction along the fixing portion.

The fixing part may have a ring shape, may come into contact with the uneven part, and may include a metal material.

The irreversible element having a resonance circuit according to an example of the present invention allows the body portion and the plurality of connection terminals of the insulating guide to have a planar shape, thereby reducing manufacturing cost, and an unwanted electrode of the electric circuit element to which the irreversible element is connected Unwanted shorts between irreversible elements can be easily prevented.

1 is a view showing a transmitting end of a general wireless communication equipment.
2 is a diagram for explaining a circulator and an isolator.
3 to 5 are diagrams for explaining an irreversible element having a resonance circuit according to an example of the present invention.
6 is a view for explaining a case in which a fixing part is provided on the outer surface of the side wall parts 220 of the housing 200 of the irreversible element having a resonance circuit according to an example of the present invention.
7 and 8 are diagrams for explaining the effect of a case in which the fixing part is provided on the outer surface of the side wall parts 220 of the housing 200 .

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, if it is determined that adding a detailed description of a technique or configuration already known in the relevant field may obscure the gist of the present invention, it will be partially omitted from the detailed description. In addition, the terms used in this specification are terms used to properly express the embodiments of the present invention, which may vary according to a person or custom in the relevant field. Accordingly, definitions of these terms should be made based on the content throughout this specification.

Hereinafter, an irreversible element having a resonance circuit according to the present invention will be described with reference to the accompanying drawings.

3 to 5 are diagrams for explaining an irreversible element having a resonance circuit according to an example of the present invention.

More specifically, Figure 3 is an exploded view of an irreversible element having a resonance circuit according to an example of the present invention, Figure 4 shows an example in which each component of Figure 3 is combined, Figure 5 is a line A-A in Figure 4 A cross-section is shown according to

An irreversible element having a resonance circuit according to an example of the present invention is a cover 10, a top plate (Top plate, 20), a temperature compensation plate (30), a magnet (Margnet, 30), an upper electrode plate (Pole Plece, 50) , upper garnet (Garnet, 60), strip (Strip, 70), lower garnet (80), lower electrode plate (90), ferrite (Ferrite, 100), insulation guide 110, housing 200 and a plurality of connecting pins 120 and, although not shown, may further include a fixing part. Here, the description of the fixing part will be described below with reference to FIG. 6 .

3 and 4, the irreversible element having a resonance circuit according to an example of the present invention is seated and stacked in order from the insulating guide 110 to the cover 10 inside the housing 200 and is formed. can be

The housing 200 may be formed of a metal material to serve as a magnetic shield and an outer case of an internal component. Such a housing 200 is provided with a plurality of cut-outs D220 in order to pass the connection terminals 70a, 70b, and 70c of the strip 70 on the side thereof, and has a cylindrical shape having an open receiving groove. can be formed. To this end, the housing 200 may include a bottom portion 210 and a plurality of sidewall portions 220 .

The plurality of sidewall portions 220 may extend in a direction perpendicular to the bottom portion 210 , and the sidewall portions 220 may be divided by a plurality of openings D220 in which some of the sidewalls are partially opened.

As described above, the plurality of connection terminals 70a , 70b , and 70c provided in the strip 70 may extend to the outside of the housing 200 through the plurality of openings D220 formed between the sidewall parts 220 . .

The bottom portion 210 forms the bottom of the housing 200 , and the bottom portion 210 is recessed inward in the horizontal direction at the portion where the openings D220 are in contact with the bottom portion 210 of the housing 200 . (R210) may be provided.

As a component for configuring a resonance circuit in the space inside the receiving groove of the housing 200 , as shown in FIGS. 3 and 4 , a cover 10 , a top plate 20 (Top plate), and a temperature compensation Plate 30, magnet 30 (Margnet), upper pole plate 50 (Pole Plece), upper garnet 60 (Garnet), strip 70 (Strip), lower garnet 80, lower pole plate 90 ), the ferrite 100 (Ferrite), and the insulating guide 110 may be seated in this order.

The strip 70 is formed of a metal material, and may function as a transmission conductor to output a signal input through any one connection terminal to the outside through another connection terminal. Such a strip 70 may play a role of causing resonance in a frequency band desired by a developer by implementing an L value and a C value according to the phenomenon of the line.

Such a strip 70 is provided with a plurality of connection terminals 70a, 70b, and 70c extending outside the plurality of openings D220, and the plurality of connection terminals 70a, 70b, and 70c is the strip 70 ) may be electrically connected to each other at the center, and may have a predetermined pattern to generate resonance in a frequency band desired by the developer.

The strip 70 may include a plurality of connection terminals forming a plurality of input/output ports, and the plurality of connection terminals 70a, 70b, and 70c include an input terminal to which an input signal is applied, and an output terminal to which a signal is output. , and may be used as a ground terminal for removal of a carrier wave.

Each of these connection terminals 70a, 70b, and 70c may protrude to the outside of the housing 200 through the openings D220 of the housing 200 cut in three directions of the housing 200 .

The insulation guide 110 fixes the connection pins 120 connected to the respective connection terminals 70a, 70b, and 70c of the strip 70, while the respective connection terminals 70a, 70b, 70c and the housing 200 are spaced apart from each other. It can serve to prevent short circuit by foreign substances.

To this end, the insulating guide 110 may be formed of an insulating material, for example, may be formed using at least one of materials such as polyester, polyamide, phenol, paper, non-woven fabric, epoxy, glass, etc. .

The insulating guide 110 is positioned between the strip 70 and the bottom 210 of the housing 200 , and may include a body 111 and a plurality of support parts 112a, 112b, and 112c.

The body part 111 is located inside the side wall parts 220 of the housing 200, and may be formed as a circular ring having a central opening hole H110, and a plurality of support parts 112a, 112b, 112c. The silver may extend from the body portion 111 in an outward direction of the plurality of openings D220 .

As shown in FIGS. 4 and 5 , the plurality of support portions 112a, 112b, and 112c are vertically overlapped with the plurality of connection terminals 70a, 70b, and 70c, and are spaced apart from each other in the vertical direction. can

The plurality of support parts 112a, 112b, and 112c have a connection hole into which a plurality of connection pins 120 are inserted, and the plurality of connection pins 120 penetrate the connection hole in a vertical direction to obtain a plurality of connection terminals ( 70a, 70b, 70c).

Next, the ferrite 100 , the lower electrode plate 90 , and the lower garnet 80 are positioned between the lower portion of the strip 70 and the insulating guide 110 , and the upper garnet 60 and the upper electrode plate 50 are disposed on the strip 70 . ) can be located.

The ferrite 100 may be formed by using a magnet including a strontium (Sr)-based material composed of an insulator. Accordingly, a plating film may be formed on the surface to be electrically connected to the housing 200 .

As shown in FIGS. 4 and 5 , the ferrite 100 is inserted and positioned in the central opening hole H110 of the insulating guide 110 , and can be connected to the bottom 210 of the housing 200 . have.

The upper garnet 60 and the lower garnet 80 may be positioned with the strip 70 interposed therebetween. It may be a ferrite 100 or a device in which a dielectric is coupled to the ferrite 100, and by implementing each inductance L value and capacitance C value with the strip 70 interposed therebetween, reversible transmission of signal propagation or It may enable irreversible transmission.

The upper pole plate 50 and the lower pole plate 90 may be positioned with the upper garnet 60 , the strip 70 , and the lower garnet 80 interposed therebetween. The upper pole plate 50 and the lower pole plate 90 accumulate the magnetic force of the magnet 30 so that the magnetic force is uniformly distributed in the lower garnet 80 and the upper garnet 60. can

The magnet 30 is positioned above the upper garnet 60 and the lower garnet 80 to apply a DC magnetic field to the upper garnet 60 and the lower garnet 80 . Such a magnet 30 may include a conductor material such as samarium (Sm) and cobald (Co), and a separate surface treatment for grounding may not be necessary. The upper plate 50 may be in direct contact with such a magnet 30 .

The temperature compensating plate 30 is located above the magnet 30, and serves to compensate for the change in the strength of the magnetic field transmitted from the magnet 30 to the upper garnet 60 and the lower garnet 80 according to a change in temperature. It may be a magnetic field parallel temperature compensator 30 to perform.

To this end, the temperature compensating plate 30 forms a magnetic field path for implementing electrical characteristic values between the strip 70, the upper garnet 60, and the lower garnet 80, and heats generated in the housing 200. It can perform a heat dissipation function for cooling.

The top plate 20 includes a plurality of protruding pieces 20a, 20b, and 20c protruding outward from the outer circumferential surface to prevent misalignment of the plurality of internal components configured in the receiving groove of the housing 200 . .

The cover 10 may protect the internal components configured in the receiving groove of the housing 200 .

As such, the cover 10, the top plate 20, the temperature compensating plate 30, the magnet 30, the upper electrode plate 50, the upper garnet 60, the strip 70, and the lower garnet shown in FIG. 80 , the lower electrode plate 90 , the ferrite 100 , the insulating guide 110 and the housing 200 are coupled along the dotted line to form an irreversible element as shown in FIG. 4 .

Here, as shown in FIG. 5 , the ferrite 100 is inserted into the central opening hole H110 of the body 111 provided in the insulating guide 110 to contact the bottom 210 of the housing 200 . The lower electrode plate 90 , the lower garnet 80 and the strip 70 may be sequentially stacked on the ferrite 100 to cover the central opening hole H110 of the body 111 .

Here, in the insulating guide 110, the body portion 111 and the plurality of support parts 112a, 112b, and 112c may be formed in a planar shape on a horizontal plane, and the plurality of support parts 112a, 112b, 112c is a housing. It may be provided to protrude to the outside of the 200 . The shape of the insulating guide 110 is formed in a planar shape, so that the manufacturing cost of the insulating guide 110 can be minimized.

That is, the insulation guide 110 according to the present invention is formed by cutting a flat insulating plate along a planar pattern for forming the body portion 111 and the plurality of support portions 112a, 112b, 112c, and the body portion ( The entire shape of the insulating guide 110 including the 111 ) and the plurality of support parts 112a, 112b, and 112c may have a planar shape.

In this way, since the entire shape of the insulating guide 110 including the body 111 and the plurality of support parts 112a, 112b, and 112c does not have a three-dimensional shape, but has a flat shape, the manufacturing cost can be greatly reduced. can

In particular, by fixing the plurality of connecting pins (120a, 120b, 120c) while the ends of the plurality of support parts (112a, 112b, 112c) also have a planar shape, at low cost, electricity to which the irreversible element is connected It is possible to easily prevent a short that may occur due to conductive fragments between the unwanted electrode of the circuit element and the connection terminals 70a, 70b, and 70c of the strip 70. Due to the planar shape, the connection terminal provided on the strip 70 and the plurality of support portions provided on the insulating guide 110 may be spaced apart as shown in FIGS. 4 and 5 , and the plurality of connection terminals and the plurality of supports The additionally spaced distance D1 may be greater than the thickness of the connection terminal.

More specifically, the separation distance D1 by which the plurality of connection terminals and the plurality of support portions are spaced apart may be substantially equal to or smaller than the thicknesses of the lower electrode plate 90 and the lower garnet 80 .

In addition, in the irreversible element according to an example of the present invention, an empty space spaced apart from each other is provided between each of the plurality of connection pins 120a, 120b, and 120c and the detached portion R120 of the housing bottom 210, and the empty space is can be exposed to the outside.

In this way, by providing an empty space between each of the plurality of connection pins 120a, 120b, and 120c and the detached portion R120 of the housing bottom 210, when electrically connecting an irreversible element to another electric circuit element, the connection After securing enough space for the connection between the connecting pin of the irreversible element and the electrode provided in the electric circuit element, the connection between the connecting pin of the irreversible element and the electrode provided in the electric circuit element is connected, Since the empty space between the connecting pin 120 and the detachable part R120 can be filled with various fillers such as adhesive resin or insulating resin, the empty space can be used in various ways.

The non-reversible element according to an example of the present invention may further include a fixing part surrounding the outer surface of the sidewall parts 220 of the housing 200 in a horizontal direction in order to further improve the function of the element. A detailed description of such a fixing part is as follows.

6 is a view for explaining a case in which a fixing part is provided on the outer surface of the side wall parts 220 of the housing 200 of the irreversible element having a resonance circuit according to an example of the present invention, and FIGS. 7 and 8 are the housing ( 200) as a road for explaining the effect of a case in which the fixing part is provided on the outer surface of the sidewall parts 220, FIG. 7 is a graph showing the characteristic when the fixing part is not provided in the irreversible element, and FIG. 8 is the present invention It is a graph of the characteristic when the fixing part is provided in the irreversible element according to an example of .

Figure 6 (a) is a state before the fixing part 300 is coupled to the irreversible element according to an example of the present invention, Figure 6 (b) shows the state in which the fixing part 300 is coupled to the irreversible element did it

As shown in FIG. 6, the irreversible element according to an example of the present invention surrounds the outer surface of the sidewall parts 220 of the housing 200 in a horizontal direction, and a fixing part 300 for preventing the sidewall parts 220 from splaying. may be further provided.

In this way, in order to be fixed so that the fixing part 300 is wrapped around the outer surface of the side wall parts 220 of the housing 200, the upper part of the strip 70 on the outer surface of the side wall parts 220 of the housing 200 Concave-convex portions 230 may be formed in a horizontal direction along the fixing portion 300 . For example, as shown in (a) of FIG. 6 , the uneven portion 230 may include a protrusion protruding from the outer surface of the side wall portion of the housing 200 .

The fixing part 300 may be positioned to cover the protrusion formed on the outer surface of the housing 200 . Such a fixing part 300 may include a metal material, and has a ring shape, so that it can be fixed in close contact with the protrusions of the concave-convex part 230 provided on the side wall parts 220 of the housing 200 .

Accordingly, it is possible to prevent the side wall portions 220 of the housing 200 from being opened outward. That is, the housing 200 may be deformed or the sidewall parts 220 of the housing 200 may be spread outward due to heat or external factors, or a manufacturing process error, but the fixing part 300 may not perform such a phenomenon. to prevent deterioration of the function of the irreversible element.

For example, when the fixing part 300 is not coupled, as shown in FIG. 7 , even when the function of the irreversible element is not properly exhibited due to reasons of the manufacturing process, as shown in FIG. 8 , the fixing part When 300 is combined, the function of the irreversible element can be improved.

In each of FIGS. 7 and 8 , (a) is a graph showing insertion loss, which means the ratio of the input port to the output port, and evaluates how far the input signal reaches the port to be transmitted.

For example, when a signal is input to the first port and output to the second port, the insertion loss represents the ratio of the signal level output to the second port to the signal level input to the first port, and is 0 [dB]. Closer means that the signal is transmitted without loss.

Therefore, when the fixing unit 300 is not coupled, as shown in (a) of FIG. 7 , the insertion loss of the irreversible element was -0.42 dB to -0.40 dB at 3.40 GHz to 3.50 GHz. However, when the fixing part 300 is fixed to the side wall part 220 of the housing 200, as shown in (a) of FIG. 8, the insertion loss of the irreversible element is -0.16dB at 3.40GHz to 3.50GHz. It can be seen that there is a significant improvement to the level of ~ -0.17 dB.

In addition, in each of FIGS. 7 and 8 , (b) is a graph showing Isolation, which means the degree of isolation between ports, and shows the degree to which an input signal is transmitted in the opposite direction of the port to be transmitted.

For example, when a signal is input to the first port and output to the second port, but not to the third port, Isolation is the ratio of the signal level input to the first port to the signal level output to the third port The closer to 0 [dB], the worse the isolation, and the larger the negative value, the smaller the signal output to the third port, meaning better isolation.

Therefore, when the fixing part 300 is not coupled, as shown in (b) of FIG. 7 , the isolation of the irreversible element was at a level of -15.77 dB to -16.95 dB at 3.40 GHz to 3.50 GHz. However, when the fixing part 300 is fixed to the side wall part 220 of the housing 200, as shown in (b) of FIG. 8, the Isolation of the irreversible element is -28.64 dB to It can be seen that the level of ~ -29.20dB is greatly improved.

In addition, in each of FIGS. 7 and 8, (c) and (d) relate to Return Loss meaning the self-reflection value of each port, and when a signal is input to a certain port, the reflection reflected to the corresponding port represents a value.

More specifically, S11 in (c) represents Forward Return Loss, which is a reflection value that the signal is output to the first port when a signal is input to the first port, and S22 in (d) is a signal input to the second port. When the signal is output to the second port, it represents the Reverse Return Loss, which is a reflection value. Therefore, the closer the Return Loss value is to 0 [dB], the higher the reflectivity, and the larger the negative value, the smaller the reflectivity is.

Therefore, when the fixing unit 300 is not coupled, the Forward Return Loss was approximately -18.18 dB and the Reverse Return Loss was approximately -15.98 dB in FIGS. 7 (c) and (d), but the fixed unit 300 is fixed to the side wall 220 of the housing 200, as shown in (b) of FIG. It can be seen that there is a significant decrease.

As such, according to an example of the present invention, an irreversible element having a resonance circuit surrounds the outer surfaces of the sidewalls of the housing in a horizontal direction and includes a fixing portion for preventing the sidewalls from splaying, thereby further improving the function of the element. can

The present invention is not limited to the above-described embodiments and the accompanying drawings, and various modifications and variations will be possible from the point of view of those of ordinary skill in the art to which the present invention pertains. Accordingly, the scope of the present invention should be defined not only by the claims of the present specification, but also by those claims and their equivalents.

10: cover 20: top plate
30: temperature compensation plate 40: magnet
50: upper electrode plate 60: upper garnet
70: strip 80: lower garnet
90: lower plate 100: ferrite
110: insulation guide 120: connecting pin
200: housing 210: bottom
220: side wall
100: base

Claims (5)

a housing extending in a direction perpendicular to the bottom and the bottom, the housing including a plurality of sidewalls separated by a plurality of openings;
a strip having a plurality of connection terminals extending outside the plurality of openings;
an insulating guide positioned between the strip and the bottom of the housing and extending outwardly of the plurality of openings from the body portion having a central opening hole and having a plurality of support portions overlapping the plurality of connection terminals; and
and a fixing part surrounding the outer surfaces of the housing side wall parts in a horizontal direction and preventing the side wall parts from splaying,
The body portion of the insulating guide and the plurality of connection terminals have a planar shape,
A part in which the openings abut in the bottom part of the housing is provided with a parting part in which the bottom part is depressed inward in the horizontal direction,
A connection hole is provided in the plurality of support parts, and a plurality of connection pins passing through the connection hole in a vertical direction are connected to the plurality of connection terminals,
An empty space spaced apart from the bottom of the housing where the detachment is located to the plurality of connecting pins is provided, and the empty space is exposed to the outside,
The fixing part has a ring shape,
The plurality of support portions provided on the insulation guide are spaced apart from the plurality of connection terminals in a vertical direction,
A lower portion of the strip includes ferrite, a lower electrode plate and a lower garnet, and an upper portion of the strip includes an upper garnet and an upper electrode plate,
The ferrite is seated in the central opening of the insulating guide,
The lower electrode plate is positioned on the upper surface of the insulation guide to cover the central opening of the insulation guide, and the lower garnet and the strip are sequentially stacked on the lower electrode plate. The method of claim 1,
The plurality of connection terminals are provided with a through hole,
The plurality of connection pins pass through through holes provided in the connection terminals and are irreversible devices having a resonance circuit connected to the plurality of connection terminals. The method of claim 1,
A vertical separation distance between the plurality of support portions provided on the insulation guide and the plurality of connection terminals is greater than a thickness of the lower garnet. 4. The method of claim 3,
An irreversible device having a resonance circuit in which a magnet, a temperature compensation plate, a top plate, and a cover are sequentially stacked on the upper electrode plate. The method of claim 1,
An irreversible element having a resonance circuit in which concavo-convex portions are formed on outer surfaces of the side wall portions of the housing in a horizontal direction along the fixing portion, and the ring-shaped fixing portion contacts the uneven portions.

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