CN220963713U

CN220963713U - Filter for communication equipment

Info

Publication number: CN220963713U
Application number: CN202322286463.6U
Authority: CN
Inventors: 朴南信; 张成号; 金宰弘; 申铅浩; 吴廷文
Original assignee: KMW Inc
Current assignee: KMW Inc
Priority date: 2022-08-26
Filing date: 2023-08-24
Publication date: 2024-05-14
Anticipated expiration: 2033-08-24

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 in the folded state, 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, and the plurality of resonators include resonance characteristic ends, and the tip ends of the resonance characteristic ends are connected to the tip ends of a pair of other portions extending in the thickness direction in the cavity as a single body, 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, and front ends of the resonance characteristic ends are connected as one body to front ends of a pair of other portions extending in the thickness direction in the cavity.

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.

The plurality of resonators includes: a pair of resonant rods corresponding to the pair of other parts; and the resonance characteristic ends are connected such that the front ends of the pair of resonance rods are spaced apart gradually along the thickness direction of the cavity.

The plurality of resonators includes: a pair of resonant rods corresponding to the pair of other parts; and the resonance characteristic ends are connected such that the front ends of the pair of resonance rods are spaced apart in parallel along the thickness direction of the cavity.

The plurality of resonators includes: a pair of resonant rods corresponding to the pair of other parts; and the resonance characteristic ends are connected such that the front ends of the pair of resonance rods are connected, and the resonance characteristic ends of the plurality of resonators may be at least equal to or greater than the width of the front ends of the pair of resonance rods.

The plurality of resonators includes: a pair of resonant rods corresponding to the pair of other parts; and the resonance characteristic end is connected to the front ends of the pair of resonance rods, wherein the width length of the base portion corresponding to the bottom surface portion of the cavity and the front end is longest, and the width length of the middle portion is shortest.

When the base plate is made of a non-conductive material, a coating of a conductive substance may be 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 includes: a side main body bottom forming plate for forming a side bottom surface portion of the cavity; and another side body bottom forming plate for forming another side bottom portion of the cavity, wherein the one side body bottom forming plate and the another side body bottom forming plate can form a complete bottom portion of the cavity except for a portion where the resonator is formed after folding.

And after folding, the substrate plate may further comprise a shielding plate on one side and a shielding plate on the other side, for shielding one end and the other end of the cavity in the length direction after folding.

The plurality of resonators may be formed in 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 of the structure of fig. 9a with a portion of the side plate molding removed.

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

Fig. 15a and 15b are perspective views showing a filter for a communication device according to a third embodiment of the present utility model.

Fig. 16a and 16b are internal perspective views of fig. 15a and 15 b.

Fig. 17 is a top view of a substrate plate in the structure of fig. 15 a.

Fig. 18 is an exploded perspective view showing an embodiment in which input terminal pins and output terminal pins are provided in the structure of fig. 15a, respectively.

Fig. 19 is a cut-away perspective view of the structure of fig. 15a with a portion of the upper plate molding removed.

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 2100: second embodiment

2110A: one side body bottom forming plate 2110B: another side main body bottom forming board

2120: One-side thickness forming plate 2130: another side thickness forming plate

2150: Body upper forming plate 2170: multiple resonators

2180A: one side shielding plate 2180B: another side shielding plate

2190: Partition 2200: third embodiment

2210A: one side body bottom forming plate 2210B: another side main body bottom forming board

2220: One-side thickness forming plate 2230: another side thickness forming plate

2250: The upper body portion forms a panel 2270: multiple resonators

2280A: one side shielding plate 2280B-1: first other side shielding plate

2280B-2: second other side shielding plate

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 are formed integrally with one end and the other end of the main body bottom forming plate 110 in the longitudinal direction, and are configured 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 insertion 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, to which the teflon 118 is stably fixed, 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 fit, 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 adjusting rods (not shown) which are deformed in shape respectively directly downward between a frequency tuning rod (not shown) which performs micro frequency tuning by adjusting the separation distance from the plurality of resonators 170 and the plurality of resonators 170 may be cut out as one body.

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 in this regard, a very thin design desired by a designer can be designed 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.

Here, an input terminal pin 175A may be integrally formed at least one of the plurality of resonators 170, connected with an input port to receive a signal transmitted from the input port (not shown), and an output terminal pin 175B may be integrally formed at another of the plurality of resonators 170, connected with 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 a side plate forming portion is removed 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 board 2105 may include: one side body bottom forming plates 2110A-1, 2110A-2 for forming one side bottom portion of the cavity C with the widthwise center as a reference; the other side main body bottom forming plates 2110B-1, 2110B-2 form other side bottom portions with the width direction center as a reference; a one-side thickness forming plate 2120 for forming one-side walls of the cavity C; an other side thickness forming plate 2130 for forming the other side wall of the cavity C; a side shielding plate 2180A for shielding a side opening portion of the cavity C; the other side shielding plate 2180B for shielding the other side opening portion of the cavity C; a plurality of resonators 2170 formed to protrude from a bottom surface of the cavity C in a thickness direction; and a partition 2190 that is separated into two spaces with respect to the width direction of the cavity C.

Wherein the one-side body bottom forming panels 2110A-1, 2110A-2 may include: a first one-sided main body bottom forming plate 2110A-1 for forming an outer side portion bottom portion of the cavity C with reference to a portion occupied by a portion 2170-1 of the plurality of resonators 2170; and a second side bottom forming plate 2110A-2 for forming a bottom portion of the inner side portion of the cavity C with reference to a portion occupied by a portion 2170-1 of the plurality of resonators 2170.

And, the other side body bottom forming panels 2110B-1, 2110B-2 may include: a first other side main body bottom forming plate 2110B-1 for forming an outer side portion bottom portion of the cavity C with reference to a portion occupied by the remaining portion 2170-2 of the plurality of resonators; and a second other side main body bottom forming plate 2110B-2 for forming an inner side portion bottom portion of the cavity C with reference to a portion occupied by the remaining portion 2170-2 of the plurality of resonators.

That is, after folding, the one side body bottom forming plates 2110A-1, 2110A-2 and the other side body bottom forming plates 2110B-1, 2110B-2 can form the complete bottom portion of the cavity C, except for the portion where the resonator 2170 is formed.

Also, the plurality of resonators 2170 may include: a first resonator 2170-1 disposed between the first one-sided body bottom forming plate 2110A-1 and the second one-sided body bottom forming plate 2110A-2; and a second resonator 2170-2 disposed between the first other side body bottom forming plate 2110B-1 and the second other side body bottom forming plate 2110B-2.

That is, the first resonator 2170-1 connects the first one-side body bottom forming plate 2110A-1 with the second one-side body bottom forming plate 2110A-2, and when folded, protrudes upward in the thickness direction at the bottom surface portion of the cavity C, and the second resonator 2170-2 connects the first other-side body bottom forming plate 2110B-1 with the second other-side body bottom forming plate 2110B-2, and when folded, protrudes upward in the thickness direction at the bottom surface portion of the cavity C.

In more detail, the body bottom forming plates 2110A-1, 2110A-2, 2110B-1, 2110B-2 forming the bottom of the cavity C are separated into four along the width direction of the cavity C, respectively, between the two body bottom forming plates 2110A-1, 2110A-2 on one side in the width direction, the first resonator 2170-1 of the plurality of resonators 2170 is integrally provided in one row along the length direction, and between the two body bottom forming plates 2110B-1, 2110B-2 on the other side in the width direction, the second resonator 2170-2 of the plurality of resonators 2170 is integrally provided in one row along the length direction.

In the main body bottom forming plate 2110, a partition 2190 may be integrally formed between the two main body bottom forming plates 2110A-1 and 2110B-2 formed in the middle, and the cavity C may be divided into two spaces in the width direction, and one or more windows 2191 may be cut.

On the other hand, in the main body bottom forming plate 2110, the main body bottom forming plates 2110A-1, 2110B-1 provided on the outermost side in the width direction may be formed with one side thickness forming plate 2120 and the other side thickness forming plate 2130 as the thickness of the integrally formed cavity C, and in particular, the main body upper forming plate 2150 as the upper portion of the integrally formed cavity C may be formed on the outer side of the other side thickness forming plate 2130, and one side shielding plate 2180A and the other side shielding plate 2180B may be integrally formed on one end and the other end in the length direction of the main body upper forming plate 2150 for shielding the open portions of the cavity C on one side and the other side in the length direction.

Here, the body upper forming plate 2150 may be integrally formed with a plurality of tuning rods (not shown) that perform fine frequency tuning by adjusting the separation distance between the resonance characteristic ends 2173 of the plurality of resonators 2170 protruding from the bottom of the cavity C toward the upper portion, and a coupling adjusting rod (not shown) that adjusts the coupling value by shape deformation between the respective resonators 2170.

On the other hand, as shown in fig. 14, the plurality of resonators 2170-1, 2170-2 integrally formed between the one side body bottom forming plates 2110A-1, 2110A-2 and the other side body bottom forming plates 2110B-1, 2110B-2 may include: a pair of resonant rods 2171, forming plates 2110A-1, 2110A-2 or 2110B-1, 2110B-2 at the bottom of the adjacent body, extending side by side from the cavity C toward the upper part; and a resonance characteristic end 2173 such that upper ends of the pair of resonance rods 2171a, 2171b are connected orthogonally to each other.

In more detail, as shown in part (a), (C) and (D) of fig. 14, the respective front ends of a pair of other portions (e.g., the resonance rods 2171a, 2171 b) related to the resonance characteristic ends 2173A, 2173C, 2173D of the plurality of resonators 2170 and the base portions thereof may be spaced apart in parallel, regardless of the height of the cavity C in the thickness direction.

As shown in fig. 14 (B), the tips of a pair of other portions (e.g., the resonance rods 2171a and 2171B) related to the resonance characteristic ends 2173B of the plurality of resonators 2170 may be gradually spaced from the base portion thereof in the thickness direction of the cavity C.

As shown in fig. 14 (a) to (D), the resonance characteristic ends 2173A, 2173B, 2173C, 2173D of the plurality of resonators 2170 may be at least equal to (refer to (C) of fig. 14) or greater than (refer to (a), (B) and (D) of fig. 14) the widths of the tips of the pair of other portions (for example, the resonance rod 2171).

Further, as shown in part (C) of fig. 14, in the pair of resonance bars (2171 a, 2171 b) associated with the resonance characteristic ends 2173C of the plurality of resonators 2170, the width length may be gradually increased along the front end of the base portion thereof, and as shown in part (D) of fig. 14, in the pair of resonance bars 2171a, 2171b associated with the resonance characteristic ends 2173D of the plurality of resonators 2170, the width length of the base portion and the front end thereof may be longest, and the width length of one portion thereof may be shortest.

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 disposed so as to pass through the input port mounting portion 115A and the output port mounting portion 115B formed in the main body bottom forming plate 110 when folded, and in the filter 2100 for a communication device according to the second embodiment of the present utility model, the input terminal pin 2175A and the output terminal pin 2175B are individually disposed so as to pass through the input port mounting portion (reference numeral not shown) formed in the one-side thickness forming plate 2120 and the output port mounting portion (reference numeral not shown) formed in the other-side thickness forming plate 2130, respectively.

The input terminal pin 2175A is connected to the input port and one of the plurality of resonators 2170 to receive a signal transmitted from an input port formed at a main board not shown, and the output terminal pin 2175B may be connected to the output port and one of the plurality of resonators 2170 to transmit a signal through an output port formed at the main board not shown.

On the other hand, in the filter 2100 for communication equipment according to the second embodiment of the present utility model, the folding manner and the order of the base material plate 2105 are as shown in fig. 10.

Fig. 15a and 15b are perspective views showing a filter for a communication device according to a third embodiment of the present utility model, fig. 16a and 16b are internal perspective views of fig. 15a and 15b, fig. 17 is a plan view of a base plate in the structure of fig. 15a, fig. 18 is an exploded perspective view showing an embodiment in which input terminal pins and output terminal pins are provided in the structure of fig. 15a, respectively, and fig. 19 is a cut-away perspective view showing a state in which a part of an upper plate forming portion is removed in the structure of fig. 15 a.

Referring to fig. 15a to 19, in a filter 2200 for a communication device according to a third embodiment of the present utility model, a base plate 2205 may include: a body bottom forming plate 2210; one-side thickness forming plate 2220 and the other-side thickness forming plate 2230; one side shielding plate 2280A and the other side shielding plate 2280B; a plurality of resonators 2270; separator 2290.

In more detail, after folding, the substrate plate 2205 may include: one side body bottom forming plates 2210A-1, 2210A-2 for forming bottom surface portions of the cavity C, forming one side bottom surface portion with the longitudinal center as a reference; the other side main body bottom forming plates 2210B-1, 2210B-2 form the other side bottom portion with the center in the longitudinal direction as a reference; a one-side thickness forming plate 2220 forming one-side sidewalls of the cavity C; a thickness forming plate 2230 on the other side to form the other side wall of the cavity C; a side shielding plate 2280A for shielding the open portion of the cavity C at one side in the longitudinal direction; the other side shielding plate 2280B for shielding the other side opening portion of the cavity C in the longitudinal direction; a plurality of resonators 2170 formed protruding in the thickness direction at the bottom surface of the cavity C; and a partition 2190 separating the cavity C into two spaces in the width direction.

In particular, when the one-side body bottom forming plates 2210A-1, 2210A-2 and the other-side body bottom forming plates 2210B-1, 2210B-2 forming the bottom of the cavity C are divided into four along the length direction, one part 2270-1 of the plurality of resonators 2270 is integrally provided as one row along the width direction between the two body bottom forming plates (i.e., the first one-side body bottom forming plate 2210A-1 and the second one-side body bottom forming plate 2210A-2) on one side in the length direction, and the other part 2270-2 of the plurality of resonators 2270 is integrally provided as one row along the width direction between the two body bottom forming plates (i.e., the first one-side body bottom forming plate 2210A-2 and the second one-side body bottom forming plate 2210B-2) on the other side in the length direction, and the remaining part 2270-3 of the plurality of resonators 2270 may be integrally provided as one row along the width direction between the two body bottom forming plates (i.e., the second other-side body bottom forming plate 2210B-1 and the first one-side body bottom forming plate B-2) on the other side in the length direction. Accordingly, a total of 6 resonators 2270 may be arranged in three columns composed of two in the width direction, respectively, or may be arranged in two columns composed of three in the length direction.

Further, in the main body bottom forming plate 2210, one side shielding plate 2280A for shielding one of the open portions of one side and the other side in the longitudinal direction of the cavity C may be integrally formed at the outer end portion of the first one-side main body bottom forming plate 2210A-1 at the outermost side in the longitudinal direction, one side thickness forming plate 2220 and the other side thickness forming plate 2230 may be integrally formed at both ends in the width direction of the one side shielding plate 2280A, and the other side shielding plate 2280B (i.e., the first other side shielding plate 2280B-1 and the second other side shielding plate 2280B-2 with reference to fig. 17) separated into two may be integrally formed at the one side thickness forming plate 2220 and the other side thickness forming plate 2230 for shielding the open other side in the longitudinal direction of the cavity C.

On the other hand, the outside end of one of the other side shielding plates 2280B (in the third embodiment 2200 of the present utility model, the first other side shielding plate 2280B-1 corresponds thereto) may be integrally formed with a partition plate 2290 separating the cavity C into one side and the other side two spaces in the width direction, and at least one window 2291, 2292 is cut open.

In the filter 2200 for a communication device according to the third embodiment of the present utility model, the folding manner and the order of the base plate 2205 are as shown in fig. 17.

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

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 tip ends of the resonance characteristic ends are integrally connected to tip ends of a pair of other portions extending in the thickness direction in the cavity.

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

The plurality of resonators includes:

a pair of resonant rods corresponding to the pair of other parts; and

The resonance characteristic ends are connected to the front ends of the pair of resonance bars,

The respective front ends of the pair of resonance rods are gradually spaced apart in the thickness direction of the cavity.

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

The plurality of resonators includes:

a pair of resonant rods corresponding to the pair of other parts; and

The front ends of the pair of resonant rods are spaced apart in parallel along the thickness direction of the cavity.

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

The plurality of resonators includes:

a pair of resonant rods corresponding to the pair of other parts; and

The resonance characteristic ends of the plurality of resonators are at least equal to or greater than the widths of the front ends of the pair of resonance bars.

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

The plurality of resonators includes:

a pair of resonant rods corresponding to the pair of other parts; and

In the pair of resonant rods, the width and length of the base portion and the tip end corresponding to the bottom surface portion of the cavity are longest, and the width and length of the intermediate portion are shortest.

7. 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.

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

9. 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.

10. The filter for a communication device according to claim 9, 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 except for a portion where the resonator is formed.

11. The filter for a communication device according to claim 9, 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.

12. The filter for a communication device according to claim 10, wherein the plurality of resonators are formed in the one-side main body bottom forming plate and the other-side main body bottom forming plate.