CN220963712U - Filter for communication equipment - Google Patents

Abstract

The present utility model relates to a filter for a communication device, and more particularly, to a filter for a communication device, which comprises a base plate made of a conductive material and manufactured in an unfolded state, wherein a cavity is formed inside when folded, and a space for accommodating a plurality of resonators is formed by folding, wherein the plurality of resonators protrude from the inside of the cavity by a predetermined length in a thickness direction or a width direction, the plurality of resonators include resonance characteristic ends, the tip portions of the resonance characteristic ends have a width wider than other portions, and both ends of the width are formed in an arc shape by winding from the tip portions of the other portions in a thickness direction on one side, thereby providing advantages such as easy miniaturization, reduced insertion loss, and improved resonance characteristics.

Description

Filter for communication equipment

Technical Field

The present utility model relates to a filter for a communication device, and more particularly, to a filter for a communication device which is easy to manufacture, which is easy to ensure a usable area of a main board (or PA board), and which can prevent an increase in the overall size of an antenna device in a thickness direction.

Background

Radio frequency devices such as radio frequency filters (including all "communication devices") are typically composed of a connection structure of a plurality of resonators. As a circuit device for resonating a combination of an inductor L and a capacitor C at a specific frequency by an equivalent electronic circuit, each resonator has a structure in which a dielectric resonator device (DR, DIELECTRIC RESONANCE ELEMENT) or a metal resonator device is provided inside a cavity (cavity) such as a metal cylinder or a rectangular parallelepiped surrounded by a conductor. Thus, each resonator has only an electromagnetic field of a natural frequency in a processing frequency band in the corresponding cavity to form a structure capable of achieving high-frequency resonance. In general, a plurality of resonant stages are formed using a plurality of cavities, and a multi-stage structure in which a plurality of resonant stages are sequentially connected is provided.

As a related example of the radio frequency filter having a plurality of cavity structures, there is Korean laid-open patent publication No. 10-2004-0100084 (name: radio frequency filter, publication day: 12/02/2004) filed by the applicant of the present application.

However, in the conventional radio frequency filter, since each resonator extends in the thickness direction in the cavity, a portion of the filter tuning cover covering the cavity is deformed in an angled manner to tune the distance from the resonator, and thus the desired bandpass characteristic is provided, there is a very limited problem in terms of size reduction in the thickness direction of the finished filter.

In addition, in the conventional radio frequency filter, as a loop for enhancing skirt characteristics between adjacent resonators or between divided resonators in a plurality of cavities, it is necessary to additionally provide a conductive material for achieving inductive coupling or capacitive coupling, and thus there is a problem that the weight of the finished filter is greatly increased.

On the other hand, in an antenna device to which a Multiple In-Out (Multiple Out-put) technology is applied, in order to achieve miniaturization of the entire product, research is being conducted In a direction to minimize the thickness of the internal structure such as a filter, and for this reason, a dielectric ceramic filter is most commonly used for this purpose.

However, the dielectric ceramic filter has a problem in that it is inevitably limited to use on both sides of a Printed Circuit Board (PCB) because it needs to be directly adhered to one surface of a main board (or PA board) stacked inside an antenna case due to its material characteristics.

Disclosure of utility model

Technical problem

In order to solve the above-described problems, an object of the present utility model is to provide a filter for a communication device capable of reducing the amount of insertion loss caused by coupling two physical structures by omitting a conventional bonding step for forming a cavity and providing a structure such as a resonator in the cavity.

Further, another object of the present utility model is to provide a filter for a communication device in which resonance characteristic ends of a plurality of resonators can be easily provided in a cavity by folding (bending).

The technical problems of the present utility model are not limited to the above-mentioned problems, and other technical problems not mentioned can be clearly understood by those skilled in the art to which the present utility model pertains from the following descriptions.

Technical proposal

A filter for a communication device according to an embodiment of the present utility model includes a base plate made of a conductive material, and manufactured in an unfolded state, and when folded, a cavity is formed therein, and a space for accommodating a plurality of resonators is formed by folding, the plurality of resonators protrude from the inside of the cavity by a predetermined length in a thickness direction or a width direction, the plurality of resonators include resonance characteristic ends, tip ends of the resonance characteristic ends have a width wider than other portions, and both ends of the width are formed in an arc shape by winding from the tip ends of the other portions in a thickness direction on one side.

Wherein at least one of the plurality of resonators is connected with an input terminal pin configured separately, the input terminal pin is connected with an input port to receive a signal transmitted from the input port of the main board, and another at least one of the plurality of resonators is connected with an output terminal pin configured separately, and the output terminal pin is connected with an output port to transmit a signal through the output port of the main board.

Further, among resonance characteristic ends of the plurality of resonators, both ends of the width of the arc shape may be spaced apart from each other by a predetermined distance.

Further, the resonance characteristic ends of the plurality of resonators may have at least one circular or semicircular horizontal cross section.

When the base plate is made of a non-conductive material, a coating of a conductive substance is formed at least in the cavity by plating.

The cavity may be filled with air having a dielectric constant of 1.

And, after folding, the base plate may include: a main body bottom forming plate for forming a bottom surface of the cavity; one side thickness forming plate and the other side thickness forming plate for increasing the size of the cavity in the thickness direction; and a main body upper forming plate for covering an upper portion of the cavity.

And, the main body bottom forming plate may include: a side main body bottom forming plate for forming a side bottom surface portion of the cavity; and an opposite side main body bottom forming plate for forming an opposite side bottom portion of the cavity, the one side main body bottom forming plate and the opposite side main body bottom forming plate forming a complete bottom portion of the cavity after folding.

After folding, the substrate plate may further include a one-side shielding plate and another-side shielding plate for shielding one end and the other end of the cavity in the longitudinal direction.

The substrate plate may further include a plurality of resonators formed on the one-side main body bottom forming plate and the other-side main body bottom forming plate.

ADVANTAGEOUS EFFECTS OF INVENTION

The filter for a communication device of the present utility model can be manufactured through a simple folding process without using an existing manner for constructing a structure in a cavity, that is, an existing joining (welding or brazing) process, and thus, can improve communication reliability by reducing insertion loss caused by the application of the joining process.

In addition, the present utility model can form the cavity by using a thin substrate of 3t or less, and thus can reduce the overall thickness dimension of the antenna device product, thereby realizing the weight and size reduction of the product.

Drawings

Fig. 1 is a perspective view showing a filter for a communication device according to an embodiment of the present utility model.

Fig. 2 is an internal perspective view of fig. 1.

Fig. 3 is a perspective view showing an unfolded state of the substrate plate in the structure of fig. 1.

Fig. 4 is a top view of fig. 3.

Fig. 5 is an exploded perspective view showing an embodiment in which input terminal pins and output terminal pins are provided, respectively, in the structure of fig. 1.

Fig. 6 is a cut-away perspective view (a, b) taken along line A-A.

Fig. 7 is a partially enlarged view showing a cross-sectional view and a top view of a fixing structure of the input terminal pin and the output terminal pin in the structure of fig. 1.

Fig. 8 is a perspective view showing a first example of a plurality of resonators in the structure of fig. 1.

Fig. 9a and 9b are perspective views showing a filter for a communication device according to a second embodiment of the present utility model.

Fig. 10a and 10b are internal perspective views of fig. 9a and 9 b.

FIG. 11 is a top view of a substrate plate in the structure of FIG. 9 a.

Fig. 12 is an exploded perspective view showing an embodiment in which input terminal pins and output terminal pins are provided in the structure of fig. 9a, respectively.

Fig. 13 is a cut-away perspective view showing a state in which a part of the upper plate forming portion is removed along the line D-D in the structure of fig. 9 a.

Fig. 14 is a perspective view showing various examples of the plurality of resonators in the structure of fig. 9 a.

Description of the reference numerals

100: First embodiment 105: substrate board

110: Body bottom forming plate 120: one side thickness forming plate

130: The other side thickness forming plate 140: concave forming board

150: The upper body forming plate 160: resonator plate

170: A plurality of resonators 1100: second embodiment

1110A: side body bottom forming plate 1110B: another side main body bottom forming board

1120: One-side thickness forming plate 1130: another side thickness forming plate

1150: The upper body forms a plate 1170: multiple resonators

1180A-1: first one-sided shield plate 1180A-2: second side shielding plate

1190: Partition board

Detailed Description

Hereinafter, a filter for communication equipment according to an embodiment of the present utility model will be described in detail with reference to the accompanying drawings.

In the process of giving reference numerals to the constituent elements of the respective drawings, it should be noted that the same reference numerals are given as much as possible even if the same constituent elements are shown on different drawings. In describing the embodiments of the present utility model, when it is determined that a specific description of a known structure or function is not an understanding of the embodiments of the present utility model, a detailed description thereof will be omitted.

When the structural elements of the embodiments of the present utility model are described, terms such as "first", "second", "a", "B", and the like may be used. Such terms are used only to distinguish one structural element from other structural elements and do not limit the nature, order, sequence, etc. of the corresponding structural elements. Also, unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. Terms defined in a dictionary generally used should be interpreted as having the same meaning as the related art having on the text, and should not be interpreted as idealized or excessively formalized meanings unless explicitly defined in the specification.

Fig. 1 is a perspective view showing a filter for a communication device according to a first embodiment of the present utility model, fig. 2 is an internal perspective view of fig. 1, fig. 3 is a perspective view showing an unfolded state of a base plate in the structure of fig. 1, fig. 4 is a plan view of fig. 3, fig. 5 is an exploded perspective view showing an embodiment in which input terminal pins and output terminal pins are respectively provided in the structure of fig. 1, fig. 6 is a cut-away perspective view (a, b) cut along a line A-A, fig. 7 is a partially enlarged view showing a cross-sectional view of a fixing structure of the input terminal pins and the output terminal pins in the structure of fig. 1 and a plan view thereof, and fig. 8 is a perspective view showing a first example of a plurality of resonators in the structure of fig. 1.

In general, in the field of antenna technology, a filter filters only a signal of a specific frequency band among signals to be input or output during transceiving, thereby obtaining only a signal desired by a consumer (user) as a result value.

In order to filter signals in the above-described manner, as the name implies, the cavity filter forms a cavity between an input port of an input signal and an output port of an output signal as a predetermined signal filtering region, and obtains a frequency signal value of a specific frequency band within a consumer's desired section through a frequency tuning process of the cavity.

However, only the following processes have been disclosed in the same industry for manufacturing antenna devices to date: in order to manufacture a cavity filter, a filter body including a ceramic material or a rigid material or more is processed to manufacture a cavity, and a plurality of resonators of a frequency filter are separately manufactured and fixed to the cavity.

However, the technical feature of the filter for communication equipment according to the embodiment of the present utility model is that the above-described manufacturing process is not required, and after a single flat base plate having a thickness not exceeding a predetermined thickness is processed into a plate form, a structure is built in the cavity by a folding process without an additional joining process. The specific technical features are described below in order of examples.

The filter 100 for a communication device according to the first embodiment of the present utility model includes a base plate 105 made of a conductive material and manufactured in an unfolded state, and when folded, a cavity C is formed inside, and a space for accommodating a plurality of resonators 170 protruding a predetermined length in a thickness direction or a width direction from inside the cavity C is formed by folding.

Preferably, the base plate 105 is made of a conductive material, but may also be made of a nonconductive material that is easy to manufacture, and then a film of a conductive substance may be formed by plating on the inside and outside including the cavity C or at least on the inside corresponding to the cavity C so as to be able to perform the function of the cavity C.

However, as described below, the substrate plate 105 is required to continuously maintain its shape after being deformed by the folding process unless an external force is applied, and therefore, it is preferable that the substrate plate 105 be made of a variable material that can be suitably processed.

The cavity C is a dielectric filling space for filling a dielectric having a predetermined dielectric constant, and is a space in which the inside is empty to fill the dielectric, and since air is also a dielectric having a dielectric constant of 1, it is clear in advance that a separate dielectric filling step is not required when air in an atmospheric pressure state is used as the dielectric.

On the other hand, in the filter 100 for a communication device according to the first embodiment of the present utility model, the base material plate 105 is used to form the cavity C as a dielectric-filled space.

As shown in fig. 3 and 4, the substrate board 105 may include: a body bottom forming plate 110 for forming the bottom of the cavity C; a one-side thickness forming plate 120 and another-side thickness forming plate 130 extending in a plane at one side end and the other side end in the width direction of the main body bottom forming plate 110 and increasing the size of the cavity C in the thickness direction to increase the length of the width; a resonator plate 160 formed to extend from one front end of the one-side thickness forming plate 120 and the other-side thickness forming plate 130, and a plurality of resonators 170 protruding from the cavity C corresponding to the upper portion of the main body bottom forming plate 110; and a main body upper portion forming plate 150 extending from the other front end of the one side thickness forming plate 120 and the other side thickness forming plate 130, and covering the upper portion of the cavity C in opposition to the main body bottom portion forming plate 110.

One side shielding plate 180A and the other side shielding plate 180B may be integrally formed at one end and the other end of the body bottom forming plate 110 in the longitudinal direction, and may be integrally formed to shield one end and the other end of the cavity C in the opening longitudinal direction.

Although the one-side shielding plate 180A and the other-side shielding plate 180B are defined to be integrally formed with the main body bottom forming plate 110, according to an embodiment, they may be symmetrically formed with an adjacent plate (for example, the main body upper forming plate 150 or the like). The one-side shielding plate 180A and the other-side shielding plate 180B are formed integrally with the adjacent plates, and may be folded to completely shield the open portions of the respective cavities C.

On the other hand, in the main body bottom forming plate 110, an input port installation portion 115A and an output port installation portion 115B formed to penetrate up and down may be provided at one end portion in the longitudinal direction and the other end portion in the longitudinal direction, the input terminal pin 175A described below may be penetrated through the input port installation portion 115A, and the output terminal pin 175B described below may be penetrated through the output port installation portion 115B.

In particular, as shown in fig. 7, the input port setting portion 115A and the output port setting portion 115B are formed as circular holes larger than the horizontal sectional area of the input terminal pin 175A or the output terminal pin 175B, and a part of the hole edge end may be formed as a boss portion 116 protruding a prescribed length along the inside of the cavity C.

The teflon 118 for impedance matching is interposed on the outer surface of the input terminal pin 175A or the output terminal pin 175B, and the fixing protrusion 117 having a stud (stud) or a zigzag protrusion shape for stably fixing the teflon 118 is integrally formed on the inner circumferential surface of the hole including the input port installation portion 115A and the output port installation portion 115B of the boss portion 116, whereby the teflon 118 can be stably fixed with forced engagement, and the advantage of minimizing the insertion loss can be achieved.

As shown in fig. 3 and 4, the base plate 105 may further include a recess forming plate 140 provided between the resonator 170 of the resonator plate 160 and the main body upper forming plate 150 connecting the one-side thickness forming plate 120 and the other-side thickness forming plate 130, and disposed so as to extend in the horizontal direction (or the thickness direction) in the cavity C.

The recess forming plate 140 has a shape corresponding to the shape of the periphery of the cavity C, and has a vertically penetrating frame shape, and an L-shaped recess 141 and a C-shaped recess 142 having specific shapes may be provided at one end in the width direction and the other end in the inside.

The L-shaped notch portion 141 and the C-shaped notch portion 142 are not necessarily provided in the notch forming plate 140, and may be integrally formed with the main body upper forming plate 150 in a range where the cavity C can be deformed by a worker who performs frequency tuning later.

Referring to fig. 3 and 4, when the recess forming plate 140 and the body upper forming plate 150 are provided at the same time, the base plate 105 may be formed integrally with one side partition plate 151 and the other side partition plate 152 that separate the recess forming plate 140 and the body upper forming plate 150 in the thickness direction within the cavity C.

After the folding of the main body upper forming plate 150 is completed, the lower end portion of the other side partition plate 152 may be welded to the upper end of the other side thickness forming plate 130, which is the forming start portion (one end) of the recess forming plate 140.

After the resonator plate 160 is folded, the end portion (the other end) of the notch forming plate 140 corresponding to the lower end of the one-side partition plate 151 may be welded to the upper surface of the portion overlapping the resonator plate 160 in the thickness direction. On the other hand, in the main body upper forming plate 150, the plurality of resonators 170 are formed as a single layer in the thickness direction inside the cavity C, and a plurality of coupling adjustment rods (not shown) each deformed in shape directly downward between a frequency adjustment rod (not shown) performing micro frequency tuning by adjusting the separation distance from the plurality of resonators 170 and the plurality of resonators 170 may be integrally cut.

A tool insertion hole (not shown) is formed in the upper body forming plate 150 so as to penetrate the upper and lower sides thereof, whereby the shapes of the L-shaped recess 141 and the C-shaped recess 142 can be changed by a predetermined tool.

Here, as shown in fig. 2 to 7, when the cavity C formed by folding the respective portions of the base material plate 105 is formed in a small rectangular parallelepiped shape which is relatively long in the longitudinal direction and relatively small in the up-down thickness direction compared to the front-rear width direction, the plurality of resonators 170 may form the same single layer with respect to the thickness direction of the cavity C.

The L-shaped notch portion 141 and the C-shaped notch portion 142 provided in the notch forming board 140 may be formed in the same single layer with respect to the thickness direction of the cavity C, or may be formed in different single layers from the plurality of resonators 170.

In this case, each thickness of a single layer formed by the plurality of resonators 170 and the L-shaped notch portions 141 and C-shaped notch portions 142 is taken as the thickness of the base material plate 105, and an ultrathin design desired by a designer can be designed at a point where a very thin thickness is formed without increasing the size including the entire product thickness.

On the other hand, referring to fig. 8, the plurality of resonators 170 may include resonance characteristic ends 173, the front end portions of which are flat and have a wider width, and the same layer is formed in the cavity C with other portions. Hereinafter, for convenience of explanation, as each of the structural parts of the plurality of resonators 170 integrally extends from the base plate 105, a body part where the resonance characteristic end and the tip end are connected is referred to as a resonance rod 171.

At least one of the resonators 170 may be integrally formed with an input terminal pin 175A, connected to an input port to receive a signal transmitted from the input port (not shown), and another one of the resonators 170 may be integrally formed with an output terminal pin 175B, connected to an output port to transmit a signal through the output port (not shown).

On the other hand, as shown in part (a) of fig. 8, resonance characteristic ends 173 of the plurality of resonators 170 may be formed as one body extending in an angular manner to the front ends of the other portions (resonance rod 171).

As shown in fig. 8 (b), the resonance characteristic ends 173 of the resonators 170 may be integrally formed as a single piece extending in a circular arc shape at the front ends of the other portions (the resonance rod 171).

Finally, as shown in fig. 8 (c), the resonance characteristic ends of the plurality of resonators may be integrally formed at the front ends of the other portions (the resonance rod 171) in a U-shape surrounding the front ends of the other portions (the resonance rod 171).

A method of manufacturing a filter for a communication device according to a first embodiment of the present utility model having the above-described structure will be briefly described below.

First, after the base plate 105 of a conductive material or a nonconductive material is prepared (base plate preparation step), it is moved to a press die plate and press sheet metal processing is performed in a shape designed in advance (press sheet metal processing step).

In this case, as described above, the base plate 105 is preferably designed by sheet metal so that the cavity C that shields the outside is formed by the main body bottom forming plate 110, the one-side thickness forming plate 120, the other-side thickness forming plate 130, the one-side shielding plate 180A and the other-side shielding plate 180B, the main body upper forming plate 150, and other plates (for example, the one-side partition plate 151 and the other-side partition plate 152) directly connected thereto through the following folding process.

Further, after the base plate 105 is subjected to the stamping sheet metal working process, if the material of the base plate 105 is a nonconductive material, a film of a conductive substance is formed at least in the entire interior of the cavity C by additionally performing a separate conductive film coating process, and then, a folding process for forming the cavity C may be sequentially performed.

Wherein the folding process sequentially folds the cavity C from the lower side to the upper side with reference to the body bottom forming plate 110 to form a desired related plate, the plurality of resonators 170 formed in the resonator plate 160 are folded to form the same layer (or a single layer) in the cavity C, and the L-shaped notch portion 141 and the C-shaped notch portion 142 formed in the notch forming plate 140 may be folded to form a different single layer from the plurality of resonators 170 in the cavity C.

On the other hand, the filter for communication equipment according to the embodiment of the present utility model is not limited to the first embodiment 100 described above in terms of forming the cavity C by folding the base material plate 105 (folding method). The filter 200 for communication equipment according to the second embodiment of the present utility model will be described in detail below.

Fig. 9a and 9b are perspective views showing a filter for a communication device according to a second embodiment of the present utility model, fig. 10a and 10b are internal perspective views of fig. 9a and 9b, fig. 11 is a plan view of a base plate in the structure of fig. 9a, fig. 12 is an exploded perspective view showing an embodiment in which input terminal pins and output terminal pins are respectively provided in the structure of fig. 9a, fig. 13 is a cut-away perspective view showing a state in which a part of an upper plate is removed along a line D-D in the structure of fig. 9a, and fig. 14 is a perspective view showing various examples of a plurality of resonators in the structure of fig. 9 a.

Referring to fig. 9a to 14, in a filter 1100 for a communication device according to a second embodiment of the present utility model, after folding, a base plate 1105 may include: a side body bottom forming plate 1110A for forming a side bottom portion of the cavity C; a second side main body bottom forming plate 1110B for forming a second side bottom portion of the cavity C; one side thickness forming plate 1120 and the other side thickness forming plate 1130, which are respectively formed to extend from the widthwise outer end of one side main body bottom forming plate 1110A and the widthwise outer end of the other side main body bottom forming plate 1110B, for increasing the size of the cavity C in the thickness direction; the first one-side shield plate 1180A-1 extending from one-side thickness forming plate 1120 by half in the width direction from one-side end in the length direction; a second one-side shield plate 1180A-2 extending from the other-side thickness-forming plate 1130 by half in the width direction from the other-side end in the length direction; the other-side shielding plate 1180B extending the width-wise dimension such that the other-side end in the length direction of the one-side thickness forming plate 1120 is connected to one-side end in the length direction of the other-side thickness forming plate 1130; and a main body upper forming plate 1150 extending from the other end in the width direction opposite to the one end in the width direction of the one-side thickness forming plate 1120 forming the one-side main body bottom forming plate 1110A, and covering the upper portion of the cavity C opposite to the one-side main body bottom forming plate 1110A and the other-side main body bottom forming plate 1110B.

Here, a plurality of resonators 1170 may be included at the outer end of the one side body bottom forming plate 1110A and the outer end of the other side body bottom forming plate 1110B, and the plurality of resonators 1170 extend toward the thickness direction side of the body upper forming plate 1150 inside the bottom of the cavity C.

More specifically, a part (three) of the plurality of resonators 1170 is formed at the outer end of the one-side main body bottom forming plate 1110A, the bottom of the resonance cutout cut at a predetermined depth is formed in the inner side in the width direction of the one-side main body bottom forming plate 1110A in a bent manner, the rest (three) of the plurality of resonators 1170 is formed at the outer end of the other-side main body bottom forming plate 1110B, the bottom of the resonance cutout cut at a predetermined depth is formed in the inner side in the width direction of the other-side main body bottom forming plate 1110B in a bent manner, and the two rows are formed in the cavity C in the thickness direction so as to protrude toward the main body upper forming plate 1150.

Further, the filter 1100 for a communication device according to the second embodiment of the present utility model may further include a partition 1190 provided at one outer end portion of the first one-side shield plate 1180A-1 and the second one-side shield plate 1180A-2, and the cavity C may be divided into two sides in the width direction on the space level by being folded into the inside of the cavity C when the folding process is performed.

According to the above configuration, when the filter 1100 for communication equipment according to the second embodiment of the present utility model is compared with the filter 100 for communication equipment according to the first embodiment of the present utility model, the following differences exist.

First, in the filter 100 for a communication device according to the first embodiment of the present utility model, the main body bottom forming plate 110 forming the bottom of the cavity C is of a single plate structure which cannot be separated, whereas the filter 110 for a communication device according to the second embodiment of the present utility model is separated into two in the width direction of the cavity C at the main body bottom forming plates 1110A, 1110B forming the bottom of the cavity C, and a plurality of resonators 1170 may be integrally formed at one side end portions of the main body bottom forming plates 1110A, 1110B so as to be foldable from one side end portions of the respective separated main body bottom forming plates 1110A, 1110B along the thickness direction side of the cavity C without providing additional resonator plates.

Later, when the folding process is performed, the one side body bottom forming plate 1110A and the other side body bottom forming plate 1110B separated into two may be joined to each other to form the complete bottom surface of the cavity C.

In the filter 100 for a communication device according to the first embodiment of the present utility model, the one-side thickness forming plate 120 and the other-side thickness forming plate 130 are formed to extend from one end and the other end of the main body bottom forming plate 110 in the width direction, and the one-side shielding plate 180A and the other-side shielding plate 180B are formed to extend from one end and the other end of the main body bottom forming plate 110 in the length direction, respectively, whereas the filter 1100 for a communication device according to the second embodiment of the present utility model has the one-side thickness forming plate 1120 and the other-side thickness forming plate 1130 formed to extend to the other end of the main body bottom forming plates 1110A and 1110B, respectively, and the one-side thickness forming plate 1120 and the other-side thickness forming plate 1130 are formed to extend to be foldable as a unit, and the one-side thickness forming plate 1120 and the other-side thickness forming plate 1130 are connected to form a unit through the other-side shielding plate 1180B.

In the filter 1100 for a communication device according to the second embodiment of the present utility model, the main body upper forming plate 1150 is integrally formed by extending the other end in the width direction of the non-formed main body bottom forming plate 1110A from the both ends in the width direction of the one-side thickness forming plate 1120, and the first one-side shielding plate 1180A-1 and the second one-side shielding plate 1180A-2 can be integrally formed to occupy half the area from the one end and the other end in the length direction of the one-side thickness forming plate 1120 and the other end of the other-side thickness forming plate 1120, respectively, from the respective corresponding ends of the non-formed other-side shielding plate 1180B.

In particular, in the filter 1100 for a communication device according to the second embodiment of the present utility model, the partition 1190 may be integrally formed at one longitudinal end of one side shielding plate 1180A-1, 1180A-2, and one or more windows 1191, 1192 may be cut and formed so that the cavity C may be divided into two spaces along both sides in the width direction.

On the other hand, referring to fig. 14, in the filter 1100 for a communication device according to the second embodiment of the present utility model, the plurality of resonators 1170 integrally formed on the body bottom forming plates 1110A, 1110B may include resonance characteristic ends 1173, each front end portion of the resonance lever 1171 has a width wider than other portions, and both ends of the width are formed in an arc shape by winding from the front ends of the other portions in one thickness direction.

More specifically, as shown in fig. 14 (a) and (B), the ends of the arc-shaped width may be spaced apart from each other by a predetermined distance among the resonance characteristic ends 1173A and 1173B of the plurality of resonators 1170.

Also, the resonance characteristic ends 1173A of the plurality of resonators 1170 may have at least one circular shape (refer to part (b) of fig. 14) or a semicircular horizontal section (refer to part (a) of fig. 14).

In the filter 100 for a communication device according to the first embodiment of the present utility model, after being integrally formed with one of the resonators 170, the input terminal pin 175A and the output terminal pin 175B are fixedly provided through the input port setting portion 115A and the output port setting portion formed in the main body bottom forming plate 110 when the folding process is performed, whereas in the filter 1100 for a communication device according to the second embodiment of the present utility model, the input terminal pin 1175A and the output terminal pin 1175B are separately arranged, except that the input port setting portion 1115A formed in the first one-side shielding plate 1180A-1 and the output port setting portion 1115B formed in the second one-side shielding plate 1180A-2 are fixedly provided through the input port setting portion 1115A, respectively.

The input terminal pin 1175A is connected to the input port and one of the plurality of resonators 1170 to receive a signal transmitted from the input port formed in the main board not shown, and the output terminal pin 1175B may be connected to the output port and one of the plurality of resonators 1170 to transmit a signal through the output port formed in the main board not shown.

On the other hand, in the second embodiment 1100, the folding manner and the sequence of the base material sheet 1105 are shown in fig. 11.

The filters 100, 200, 300, 400 for communication devices according to the embodiments of the present utility model are described in detail above with reference to the drawings. However, the embodiments of the present utility model are not limited to the above-described embodiments, and those skilled in the art can implement various modifications and implementations within the technical scope of the present utility model. Accordingly, the true scope of the utility model should be defined based on the claims.

Claims (10)

1. A filter for a communication device, characterized in that,

Comprises a substrate plate made of a conductive material, manufactured in an unfolded state, and when folded, a cavity is formed inside, a space for accommodating a plurality of resonators is formed by folding, the plurality of resonators protrude from the inside of the cavity by a prescribed length in a thickness direction or a width direction,

The plurality of resonators include resonance characteristic ends, and the tip portions of the resonance characteristic ends have a width wider than other portions, and both ends of the width are formed in an arc shape by winding from the tip portions of the other portions in one thickness direction.

2. A filter for a communication device according to claim 1,

An input terminal pin separately provided is connected to at least one of the plurality of resonators, the input terminal pin is connected to an input port to receive a signal transmitted from the input port of the main board,

An output terminal pin, which is separately disposed, is connected to at least one other of the plurality of resonators, and the output terminal pin is connected to an output port to transmit a signal through the output port of the main board.

3. The filter for a communication device according to claim 1, wherein, among resonance characteristic ends of the plurality of resonators, both ends of the width of the circular arc shape are spaced apart from each other by a predetermined distance.

4. The filter according to claim 1, wherein the resonance characteristic ends of the plurality of resonators have at least one horizontal cross section of a circular shape or a semicircular shape.

5. A filter for a communication device according to claim 1,

The substrate plate is made of one of a conductive material or a nonconductive material,

When the base plate is made of a nonconductive material, a coating film of a conductive substance is formed at least in the cavity by plating.

6. The filter for a communication device according to claim 1, wherein the cavity is filled with air having a dielectric constant of 1.

7. The filter for a communication device according to claim 1, wherein the base plate includes, after folding:

a main body bottom forming plate for forming a bottom surface of the cavity;

One side thickness forming plate and the other side thickness forming plate for increasing the size of the cavity in the thickness direction; and

And a main body upper forming plate for covering the upper part of the cavity.

8. The filter for a communication device according to claim 7, wherein said main body bottom forming plate comprises:

a side main body bottom forming plate for forming a side bottom surface portion of the cavity; and

A plate for forming the bottom of the other side of the cavity,

After folding, the one-side main body bottom forming plate and the other-side main body bottom forming plate form a complete bottom portion of the cavity.

9. The filter for a communication device according to claim 7, wherein the base plate further comprises a one-side shielding plate and another-side shielding plate for shielding one end and the other end in a longitudinal direction of the cavity after folding.

10. The filter for a communication device according to claim 8, wherein the base plate further includes a plurality of resonators formed on the one-side main body bottom forming plate and the other-side main body bottom forming plate.