Filter for communication device

Abstract

The present invention relates to a filter for a communication device, and more particularly, to a filter for a communication device, which comprises a base material plate that is made of a conductive material, is manufactured in an unfolded state, forms a cavity therein when folded, and forms a space for accommodating a plurality of resonators by folding, the plurality of resonators protruding 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 the tip portions of the resonance characteristic ends are integrally connected to the tip portions of a pair of other portions extending in the thickness direction in the cavity, thereby providing advantages such as easy miniaturization manufacturing, reduced insertion loss, and improved resonance characteristics.

Description

Technical Field

[0001] The present invention relates to a filter for communication equipment, and more particularly, to a filter for communication equipment which is easy to manufacture, easy to ensure the use area of ​​a main board (or PA board), and can prevent the overall size of an antenna device from increasing in the thickness direction. Background Art

[0002] Radio frequency devices such as radio frequency filters (including all "communication equipment") are usually composed of a connection structure of multiple resonators. This resonator is a circuit device that makes the combination of inductor L and capacitor C resonate at a specific frequency through an equivalent electronic circuit. Each resonator has a structure in which a dielectric resonant device (DR, Dielectric Resonance element) or a metal resonant device is set inside a cavity (cavity) such as a metal cylinder or a cuboid surrounded by a conductor. As a result, each resonator has only an electromagnetic field of the natural frequency within the processing frequency band in the corresponding cavity to form a structure that can achieve high-frequency resonance. Usually, multiple cavities are used to form multiple resonance stages, with a multi-stage structure in which multiple resonance stages are connected in sequence.

[0003] As a related example of a radio frequency filter having a plurality of cavity structures, there is Korean Patent Publication No. 10-2004-0100084 (title: “Radio Frequency Filter”, publication date: December 2, 2004) previously filed by the applicant of the present application.

[0004] However, in existing wireless frequency filters, since each resonator extends along the thickness direction within the cavity, a portion of the filter tuning cover covering the cavity is deformed in an angled manner to tune the distance to the resonator so as to have the desired bandpass characteristics. Therefore, there is a very limited problem in reducing the size of the finished filter in the thickness direction.

[0005] Furthermore, in existing wireless frequency filters, as a means of enhancing the skirt characteristics between adjacent resonators or between separated resonators in multiple cavities, additional conductive materials for achieving inductive coupling or capacitive coupling are required, and thus, the finished filter has a problem of significantly increased weight.

[0006] On the other hand, in antenna devices that use Massive MIMO (Multiple Input Multiple Output) technology, research is being conducted to minimize the thickness of internal structures such as filters in order to achieve miniaturization of the entire product. For this purpose, the most commonly used filter type for this purpose is dielectric ceramic filters.

[0007] However, due to its material characteristics, the dielectric ceramic filter needs to be directly attached to one side of the main board (or PA board) stacked inside the antenna housing, thus inevitably limiting the use of both sides of the printed circuit board (PCB). Summary of the invention

[0008] Technical issues

[0009] In order to solve the above-mentioned technical problems, the purpose of the present invention is to provide a filter for communication equipment that can reduce the insertion loss caused by the combination of two physical structures by omitting the existing bonding process for forming a cavity and setting a structure such as a resonator in the cavity.

[0010] Furthermore, another object of the present invention is to provide a communication device filter in which the resonant characteristic ends of a plurality of resonators can be easily arranged in a cavity by folding (bending).

[0011] The technical problems of the present invention are not limited to the problems mentioned above, and ordinary technicians in the technical field to which the present invention belongs can clearly understand other technical problems not mentioned through the following records.

[0012] Technical Solution

[0013] A filter for communication equipment according to one embodiment of the present invention includes a substrate plate, which is made of a conductive material and is manufactured to be in an unfolded state. When folded, a cavity is formed inside. The folding forms a space for accommodating a plurality of resonators. The plurality of resonators protrude from the inside of the cavity by a specified length along a thickness direction or a width direction. The plurality of resonators include a resonant characteristic end, and a front end portion of the resonant characteristic end is connected as a whole with a pair of front ends of other portions extending in the thickness direction in the cavity.

[0014] Among them, at least one of the above-mentioned multiple resonators is connected to a separately configured input terminal pin, and the above-mentioned input terminal pin is connected to the input port to receive the signal transmitted from the above-mentioned input port of the mainboard, and at least one of the other above-mentioned multiple resonators may be connected to a separately configured output terminal pin, and the above-mentioned output terminal pin is connected to the output port to transmit the signal through the above-mentioned output port of the mainboard.

[0015] Furthermore, the above-mentioned multiple resonators include: a pair of resonant rods, equivalent to the above-mentioned pair of other parts; and the above-mentioned resonant characteristic end, so that the front ends of the above-mentioned pair of resonant rods are connected, and the front ends of the above-mentioned pair of resonant rods can be gradually separated along the thickness direction of the above-mentioned cavity.

[0016] Furthermore, the above-mentioned multiple resonators include: a pair of resonant rods, which are equivalent to the above-mentioned pair of other parts; and the above-mentioned resonant characteristic end, so that the front ends of the above-mentioned pair of resonant rods are connected, and the front ends of the above-mentioned pair of resonant rods are spaced parallel to each other along the thickness direction of the above-mentioned cavity.

[0017] Furthermore, the above-mentioned multiple resonators include: a pair of resonant rods, equivalent to the above-mentioned pair of other parts; and the above-mentioned resonant characteristic ends, so that the front ends of the above-mentioned pair of resonant rods are connected, and the resonant characteristic ends of the above-mentioned multiple resonators can be at least equal to or greater than the width of the front ends of the above-mentioned pair of resonant rods.

[0018] Furthermore, the above-mentioned multiple resonators include: a pair of resonant rods, corresponding to the above-mentioned pair of other parts; and the above-mentioned resonant characteristic end, so that the front ends of the above-mentioned pair of resonant rods are connected, and in the above-mentioned pair of resonant rods, the width and length of the base portion corresponding to the bottom portion of the above-mentioned cavity and the above-mentioned front end are the longest, and the width and length of the middle portion may be the shortest.

[0019] Furthermore, the substrate plate is made of a conductive material or a non-conductive material. When the substrate plate is made of a non-conductive material, a film of a conductive substance can be formed at least inside the cavity by plating.

[0020] Furthermore, the cavity may be filled with air having a dielectric constant of 1.

[0021] Furthermore, after folding, the substrate plate may include: a main body bottom forming plate, used to form the bottom portion of the cavity; a one side thickness forming plate and another side thickness forming plate, used to increase the dimension of the cavity in the thickness direction; and a main body upper forming plate, used to cover the upper portion of the cavity.

[0022] Furthermore, the main body bottom forming plate includes: a main body bottom forming plate on one side, used to form a bottom surface portion on one side of the cavity; and a main body bottom forming plate on the other side, used to form a bottom surface portion on the other side of the cavity. After folding, the main body bottom forming plate on one side and the main body bottom forming plate on the other side can form a complete bottom surface portion of the cavity except for the portion where the resonator is formed.

[0023] Furthermore, after being folded, the substrate plate may further include a shielding plate on one side and a shielding plate on the other side, which are used to shield one end and the other end of the cavity in the length direction after being folded.

[0024] Furthermore, the plurality of resonators may be formed on the one side body bottom forming plate and the other side body bottom forming plate.

[0025] The filter for communication equipment of the present invention can be manufactured by a simple folding process without using the existing method for constructing a structure in a cavity, that is, the existing joining (welding or brazing) process, and therefore, the communication reliability can be improved by reducing the insertion loss caused by applying the joining process.

[0026] Furthermore, the present invention can form a cavity using a thin base plate of less than 3 t, and thus can reduce the overall thickness dimension of the antenna device product to achieve product weight reduction and miniaturization. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 FIG. 1 is a perspective view showing a filter for communication equipment according to an embodiment of the present invention.

[0028] Figure 2 for Figure 1 Interior perspective view.

[0029] Figure 3 To show Figure 1 A three-dimensional diagram of the unfolded state of the substrate plate in the structure.

[0030] Figure 4 for Figure 3 Top view of the .

[0031] Figure 5 To show Figure 1 An exploded perspective view of an embodiment in which input terminal pins and output terminal pins are respectively arranged in a structure.

[0032] Figure 6 The three-dimensional cross-sectional views (a, b) are taken along the AA line.

[0033] Figure 7 To show Figure 1 A cross-sectional view of the fixing structure of the input terminal pin and the output terminal pin in the structure and a partially enlarged view of the top view thereof.

[0034] Figure 8 To show Figure 1 A perspective view of a first example of a structure with multiple resonators.

[0035] Figure 9a and Figure 9b It is a perspective view showing a filter for communication equipment according to a second embodiment of the present invention.

[0036] Fig.10a and Fig.10b for Figure 9a and Figure 9b Interior perspective view.

[0037] Fig.11 for Figure 9a A top view of the substrate plate in the structure.

[0038] Fig.12 To show Figure 9a An exploded perspective view of an embodiment in which input terminal pins and output terminal pins are respectively arranged in a structure.

[0039] Fig.13 For Figure 9a A cutaway stereoscopic view of a structure in which a portion of a side panel forming portion is removed.

[0040] Fig.14 To show Figure 9a A perspective view of various examples of multiple resonators in a structure.

[0041] Fig.15a and Fig.15b It is a perspective view showing a filter for communication equipment according to a third embodiment of the present invention.

[0042] Fig.16a and Fig.16b for Fig.15a and Fig.15b Interior perspective view.

[0043] Fig.17 for Fig.15a A top view of the substrate plate in the structure.

[0044] Fig.18 To show Fig.15a An exploded perspective view of an embodiment in which input terminal pins and output terminal pins are respectively arranged in a structure.

[0045] Fig.19 For Fig.15a A cutaway stereoscopic view of a structure in which a portion of an upper plate forming portion is removed.

[0046] Description of Reference Numerals

[0047] 100: First embodiment 105: Base material plate

[0048] 110: Main body bottom forming plate 120: One side thickness forming plate

[0049] 130: Other side thickness forming plate 140: Notch forming plate

[0050] 150: Main body upper forming plate 160: Resonator plate

[0051] 170: Multiple resonators 2100: Second embodiment

[0052] 2110A: Bottom forming plate on one side 2110B: Bottom forming plate on the other side

[0053] 2120: One side thickness forming plate 2130: The other side thickness forming plate

[0054] 2150: Main body upper forming plate 2170: Multiple resonators

[0055] 2180A: Shielding plate on one side 2180B: Shielding plate on the other side

[0056] 2190: Partition plate 2200: Third embodiment

[0057] 2210A: Bottom forming plate on one side 2210B: Bottom forming plate on the other side

[0058] 2220: Thickness forming plate on one side 2230: Thickness forming plate on the other side

[0059] 2250: Main body upper forming plate 2270: Multiple resonators

[0060] 2280A: one side shielding plate 2280B-1: the other side shielding plate

[0061] 2280B-2: Second side shielding plate DETAILED DESCRIPTION

[0062] Hereinafter, a communication device filter according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0063] In the process of assigning reference numerals to the structural elements of each drawing, it should be noted that even if the same structural elements are shown in different drawings, the same reference numerals are assigned as much as possible. In addition, in the process of describing the embodiments of the present invention, when it is determined that the specific description of the known structure or function hinders the understanding of the embodiments of the present invention, its detailed description will be omitted.

[0064] When describing the structural elements of the embodiments of the present invention, terms such as "first", "second", "A", "B", "(a)", "(b)" and the like may be used. Such terms are only used to distinguish one structural element from other structural elements, and the above terms do not limit the nature, order or sequence, etc. of the corresponding structural elements. Furthermore, unless otherwise defined, the meanings of all terms used herein, including technical terms or scientific terms, are the same as those commonly understood by ordinary technicians in the technical field to which the present invention belongs. Terms defined in commonly used dictionaries should be interpreted as having the same meaning as the contextual meaning of the relevant technology, and should not be interpreted as idealized or overly formalized meanings unless clearly defined in this specification.

[0065] Figure 1 1 is a perspective view showing a filter for communication equipment according to a first embodiment of the present invention. Figure 2 for Figure 1 The interior perspective of Figure 3 To show Figure 1A three-dimensional diagram of the unfolded state of the substrate plate in the structure, Figure 4 for Figure 3 A top view of Figure 5 To show Figure 1 An exploded perspective view of an embodiment in which input terminal pins and output terminal pins are respectively arranged in a structure of Figure 6 The three-dimensional cross-section diagram (a, b) is cut along the AA line. Figure 7 To show Figure 1 A cross-sectional view of the fixing structure of the input terminal pin and the output terminal pin in the structure and a partially enlarged view of the top view thereof, Figure 8 To show Figure 1 A perspective view of a first example of a structure with multiple resonators.

[0066] Generally, in the field of antenna technology, a filter filters only signals of a specific frequency band among signals to be input or output during a transceiver process, thereby obtaining only signals desired by consumers (users) as result values.

[0067] In order to filter the signal in the above manner, as the name suggests, the cavity filter forms a cavity between the input port of the input signal and the output port of the output signal as a predetermined signal filtering area, and obtains the frequency signal value of a specific frequency band within the expected range of the consumer through the frequency tuning process of the cavity.

[0068] However, to date, in the same industry of manufacturing antenna devices, only the following process has been disclosed: in order to manufacture a cavity filter, the inside of a filter body including a ceramic material or a rigid material above it is processed to produce a cavity, and necessary structures such as multiple resonators of the frequency filter are separately manufactured and fixed inside the cavity.

[0069] However, the technical feature of the communication device filter of the embodiment of the present invention is that, without using the above manufacturing process, a single flat substrate plate not exceeding a specified thickness is processed into a sheet metal form, and then a structure is constructed in the cavity through a folding process without an additional bonding process. The specific technical features are described in the following order according to the embodiment.

[0070] The filter 100 for communication equipment according to the first embodiment of the present invention includes a substrate plate 105, which is made of a conductive material and is manufactured to be in an unfolded state. When folded, a cavity C is formed inside. The folding forms a space for accommodating a plurality of resonators 170, and the plurality of resonators protrude from the inside of the cavity C by a specified length along the thickness direction or the width direction.

[0071] Preferably, the substrate plate 105 is made of a conductive material, but may also be made of a non-conductive material that is easy to manufacture, and then a film of a conductive material may be formed on the inside and outside of the cavity C or at least corresponding to the inside of the cavity C by plating so as to be able to perform the function of the cavity C.

[0072] However, as described below, unless an external force is applied, the substrate sheet 105 needs to continue to maintain its shape after being deformed by the folding process, and therefore, preferably, the substrate sheet 105 should be made of a deformable material that can be properly processed.

[0073] Among them, cavity C serves as a dielectric filling space for filling a dielectric with a specified dielectric constant, which refers to an empty space inside for filling with a dielectric. Since air is also a dielectric with a dielectric constant of 1, it needs to be made clear in advance that when air at atmospheric pressure is used as a dielectric, no separate dielectric filling process is required.

[0074] On the other hand, in the communication device filter 100 according to the first embodiment of the present invention, the base plate 105 is used to form the cavity C as a dielectric-filled space.

[0075] Among them, Figure 3 and Figure 4 As shown, after folding, the substrate plate 105 may include: a main body bottom forming plate 110, used to form the bottom of the cavity C; a one side thickness forming plate 120 and the other side thickness forming plate 130, extending in plane from one side end and the other side end of the width direction of the main body bottom forming plate 110 and increasing the thickness direction dimension of the cavity C to increase the length of the width; a resonator plate 160, extending from one front end of the one side thickness forming plate 120 and the other side thickness forming plate 130, and having a plurality of resonators 170 protrudingly arranged in the cavity C corresponding to the upper part of the main body bottom forming plate 110; and a main body upper 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, facing the main body bottom forming plate 110 and covering the upper part of the cavity C.

[0076] Furthermore, one end and the other end of the plate 110 formed at the bottom of the main body in the length direction can be extended to integrally form a one side shielding plate 180A and another side shielding plate 180B for shielding one end and the other end of the open length direction of the cavity C.

[0077] Although the one side shielding plate 180A and the other side shielding plate 180B are defined as being formed as one piece with the main body bottom forming plate 110, they may be symmetrically formed as one piece with adjacent plates (e.g., the main body upper forming plate 150, etc.) according to the embodiment. Furthermore, the one side shielding plate 180A and the other side shielding plate 180B are divided into two parts and formed as one piece with the adjacent plates, and the open parts of each cavity C may be completely shielded by folding.

[0078] On the other hand, in the main body bottom forming plate 110, an input port setting portion 115A and an output port setting portion 115B formed by penetrating from top to bottom may be respectively provided at one end portion in the length direction and the other end portion in the length direction, and the following input terminal pin 175A may be provided through the input port setting portion 115A, and the following output terminal pin 175B may be provided through the output port setting portion 115B.

[0079] In particular, Figure 7 As shown, the insertion input port setting portion 115A and the output port setting portion 115B are formed as circular holes with a horizontal cross-sectional area larger than the input terminal pin 175A or the output terminal pin 175B, and a portion of the edge end of the hole can be formed as a boss portion 116 protruding a specified length along the inner side of the cavity C.

[0080] Among them, Teflon 118 for impedance matching is inserted on the outer side surface of the input terminal pin 175A or the output terminal pin 175B, and a fixing protrusion 117 with a stud or a serrated protrusion shape for stably fixing the Teflon 118 is formed in an integrated manner on the inner circumference of the hole of the input port setting part 115A and the output port setting part 115B including the boss part 116. Therefore, as the forced embedding is combined, the advantage of minimizing the insertion loss can be achieved by stably fixing the Teflon 118.

[0081] Moreover, if Figure 3 and Figure 4 As shown, the substrate plate 105 may also include a notch forming plate 140, which is arranged between the main body upper forming plate 150 connecting the thickness forming plate 120 on one side and the thickness forming plate 130 on the other side and the resonator 170 of the resonator plate 160, and is extended along the horizontal direction (or thickness direction) in the cavity C.

[0082] The shape of the notch forming plate 140 corresponds to the surrounding shape of the cavity C, forming a frame shape that penetrates from top to bottom, and a specific shape of an L-shaped notch portion 141 and a C-shaped notch portion 142 may be provided at one inner side end and the other inner side end in the width direction, respectively.

[0083] Among them, the L-shaped notch portion 141 and the C-shaped notch portion 142 do not necessarily have to be set in the notch forming plate 140. They can also be formed as a whole with the upper forming plate 150 of the main body within the range that can be deformed and formed inside the cavity C by the staff who perform frequency tuning later.

[0084] Reference Figure 3 and Figure 4When the notch forming plate 140 and the main body upper forming plate 150 are provided at the same time, the substrate plate 105 can be formed as a whole with a side partition plate 151 and another side partition plate 152 that separate the notch forming plate 140 and the main body upper forming plate 150 along the thickness direction within the cavity C.

[0085] Among them, after the upper forming plate 150 of the main body is folded, the lower end of the other side partition plate 152 can be welded and connected to the upper end of the other side thickness forming plate 130 which is the forming starting point (one end) of the notch forming plate 140.

[0086] Furthermore, 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 one side partition plate 151 can be welded to the upper surface of the portion overlapping the resonator plate 160 along the thickness direction.

[0087] On the other hand, in the plate 150 formed on the upper part of the main body, the plurality of resonators 170 form a single layer inside the cavity C relative to the thickness direction, and a frequency tuning rod (not shown) for performing micro frequency tuning by adjusting the separation distance with the plurality of resonators 170 and a plurality of coupling adjustment rods (not shown) that are deformed in shape directly downward between the plurality of resonators 170 can be formed as an integral cut.

[0088] Furthermore, a tool insertion hole (not shown) is formed vertically through the main body upper forming plate 150 , whereby the shapes of the L-shaped notch portion 141 and the C-shaped notch portion 142 can be changed using a predetermined tool.

[0089] Among them, Figures 2 to 7 As shown, when the cavity C generated by folding various parts of the substrate plate 105 forms a small rectangular shape that is relatively long along the length direction and has a relatively smaller dimension in the up and down thickness direction than in the front and back width direction, multiple resonators 170 can form the same single layer relative to the thickness direction of the cavity C.

[0090] Furthermore, the L-shaped notch portion 141 and the C-shaped notch portion 142 provided in the notch forming plate 140 may form the same single layer with respect to the thickness direction of the cavity C, or may form a single layer different from the plurality of resonators 170 .

[0091] In this case, the thickness of each single layer formed by multiple resonators 170, L-shaped notch portion 141 and C-shaped notch portion 142 is used as the thickness of the substrate plate 105. In terms of forming a very thin thickness, an ultra-thin design desired by the designer can be designed without increasing the size including the thickness of the entire product.

[0092] On the other hand, refer to Figure 8The plurality of resonators 170 may include a resonant characteristic end 173 , the front end portion is flat and has a wider width, and forms the same layer as other portions in the cavity C. In the following, for convenience of explanation, as the various structural portions of the plurality of resonators 170 extend from the substrate plate 105 as a whole, the main body portion connecting the resonant characteristic end and the front end portion is referred to as a resonant rod 171 .

[0093] Among them, at least one of the multiple resonators 170 can have an input terminal pin 175A formed in an integral manner, connected to the input port to receive a signal transmitted from the input port (not shown), and another one of the multiple resonators 170 can have an output terminal pin 175B formed in an integral manner, connected to the output port to transmit a signal through the output port (not shown).

[0094] On the other hand, Figure 8 As shown in part (a) of FIG. 1 , the resonant characteristic ends 173 of the plurality of resonators 170 may be formed as a whole extending at an angle at the front end of the other portion (resonant rod 171 ).

[0095] And, if Figure 8 As shown in part (b) of FIG. 1 , the resonant characteristic ends 173 of the plurality of resonators 170 may be formed as a whole extending in an arc manner at the front end of the other portion (resonant rod 171 ).

[0096] Finally, if Figure 8 As shown in part (c), the resonant characteristic ends 173 of the multiple resonators 170 can be formed as an integral extension at the front end of the above-mentioned other parts (resonant rod 171) in a "U" shape surrounding the front end of the above-mentioned other parts (resonant rod 171).

[0097] A method for manufacturing the communication device filter according to the first embodiment of the present invention having the above-mentioned structure will be briefly described below.

[0098] First, after preparing a base plate 105 of a conductive material or a non-conductive material (base plate preparation step), it is moved to a stamping template and subjected to stamping sheet metal processing in a pre-designed shape (stamping sheet metal processing step).

[0099] In this case, as described above, preferably, the substrate plate 105 is designed as sheet metal so as to form a cavity C shielding the outside 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 directly connected thereto (for example, one side partition plate 151 and the other side partition plate 152) through the following folding process.

[0100] Moreover, after the substrate plate 105 is subjected to stamping sheet metal processing through a stamping sheet metal processing step, if the material of the substrate plate 105 is a non-conductive material, a film of a conductive material is formed at least inside the entire cavity C by additionally performing a separate conductive coating step, and then the folding step for forming the cavity C can be performed in sequence.

[0101] Among them, the folding process takes the main body bottom forming plate 110 as a reference to fold the cavity C from the bottom to the top in sequence to form the required related plates. The multiple resonators 170 formed on 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 on the notch forming plate 140 can be folded to form different single layers with the multiple resonators 170 inside the cavity C.

[0102] On the other hand, the communication device filter of the embodiment of the present invention is not limited to the first embodiment 100 in that the cavity C is formed by folding the base plate 105. Hereinafter, a communication device filter 2100 of the second embodiment of the present invention will be described in detail.

[0103] Figure 9a and Figure 9b 2 is a perspective view showing a filter for communication equipment according to a second embodiment of the present invention. Fig.10a and Fig.10b for Figure 9a and Figure 9b The interior perspective of Fig.11 for Figure 9a A top view of the substrate plate in the structure of Fig.12 To show Figure 9a An exploded perspective view of an embodiment in which input terminal pins and output terminal pins are respectively arranged in a structure of Fig.13 For Figure 9a A cutaway perspective view of a structure in which a portion of the side panel forming portion is removed. Fig.14 To show Figure 9a A perspective view of various examples of multiple resonators in a structure.

[0104] Reference Figures 9a to 14In the filter 2100 for communication equipment of the second embodiment of the present invention, after folding, the substrate plate 2105 may include: a main body bottom forming plate 2110A-1, 2110A-2 on one side, used to form a bottom portion on one side of the cavity C, and the bottom portion on one side is formed with the center in the width direction as a reference; a main body bottom forming plate 2110B-1, 2110B-2 on the other side, and the bottom portion on the other side is formed with the center in the width direction as a reference; a thickness forming plate 2120 on one side, used to form a side wall of the cavity C; a thickness forming plate 2130 on the other side, used to form the side wall of the cavity C on the other side; a shielding plate 2180A on one side, used to shield an open portion on one side of the cavity C; a shielding plate 2180B on the other side, used to shield an open portion on the other side of the cavity C; a plurality of resonators 2170, formed on the bottom portion of the cavity C protruding along the thickness direction; and a partition 2190, which separates the cavity C into two spaces with respect to the width direction.

[0105] Among them, the side body bottom forming plates 2110A-1, 2110A-2 may include: a first side body bottom forming plate 2110A-1, which forms the outer bottom surface of the cavity C based on the portion occupied by a part 2170-1 of the multiple resonators 2170; and a second side bottom forming plate 2110A-2, which forms the inner bottom surface of the cavity C based on the portion occupied by a part 2170-1 of the multiple resonators 2170.

[0106] Furthermore, the other side main body bottom forming plates 2110B-1, 2110B-2 may include: a first other side main body bottom forming plate 2110B-1, which forms the bottom surface portion of the outer portion of the cavity C based on the portion occupied by the remaining part 2170-2 of the multiple resonators; and a second other side main body bottom forming plate 2110B-2, which forms the bottom surface portion of the inner portion of the cavity C based on the portion occupied by the remaining part 2170-2 of the multiple resonators.

[0107] That is, after folding, the main body bottom forming plates 2110A-1 and 2110A-2 on one side and the main body bottom forming plates 2110B-1 and 2110B-2 on the other side can form a complete bottom surface portion of the cavity C except for the portion where the resonator 2170 is formed.

[0108] Moreover, the plurality of resonators 2170 may include a first resonator 2170-1 disposed between a first side body bottom forming plate 2110A-1 and a second side body bottom forming plate 2110A-2, and a second resonator 2170-2 disposed between a first other side body bottom forming plate 2110B-1 and a second other side body bottom forming plate 2110B-2.

[0109] That is, the first resonator 2170-1 connects the first side body bottom forming plate 2110A-1 with the second side body bottom forming plate 2110A-2, and when folded, the bottom surface portion of the cavity C is formed to protrude upward along the thickness direction, 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, the bottom surface portion of the cavity C is formed to protrude upward along the thickness direction.

[0110] In more detail, the main body bottom forming plates 2110A-1, 2110A-2, 2110B-1, and 2110B-2 forming the bottom of the cavity C are respectively separated into four along the width direction of the cavity C, and between the two main body bottom forming plates 2110A-1 and 2110A-2 on one side of the width direction, the first resonator 2170-1 of the plurality of resonators 2170 is arranged in a row as a whole along the length direction, and between the two main body bottom forming plates 2110B-1 and 2110B-2 on the other side of the width direction, the second resonator 2170-2 of the plurality of resonators 2170 can be arranged in a row as a whole along the length direction.

[0111] Furthermore, in the main body bottom forming plate 2110, a partition plate 2190 can be integrally formed between the two main body bottom forming plates 2110A-1 and 2110B-2 formed in the middle, separating the cavity C into two spaces along the width direction, and one or more windows 2191 are cut to form.

[0112] On the other hand, in the main body bottom forming plate 2110, the outermost main body bottom forming plates 2110A-1 and 2110B-1 arranged in the width direction may be formed with a side thickness forming plate 2120 and the other side thickness forming plate 2130 as an integrally formed thickness of the cavity C. In particular, a main body upper forming plate 2150 as an integrally formed upper part of the cavity C may be formed on the outer side of the other side thickness forming plate 2130. A side shielding plate 2180A and the other side shielding plate 2180B may be integrally formed at one end and the other end in the longitudinal direction of the main body upper forming plate 2150 to shield the open portions of the cavity C on one side and the other side in the longitudinal direction.

[0113] Among them, a plate 2150 formed on the upper part of the main body can integrally form a plurality of tuning rods (not shown) and coupling adjustment rods (not shown), and the plurality of tuning rods perform fine frequency tuning by adjusting the spacing between the resonance characteristic ends 2173 of a plurality of resonators 2170 protruding from the bottom of the cavity C toward the upper part, and the coupling adjustment rod adjusts the coupling value by shape deformation between each resonator 2170.

[0114] On the other hand, Fig.14As shown, a plurality of resonators 2170-1, 2170-2 integrally formed between the bottom forming plates 2110A-1, 2110A-2 on one side of the main body and the bottom forming plates 2110B-1, 2110B-2 on the other side of the main body may include: a pair of resonant rods 2171, which protrude and extend side by side from the cavity C toward the upper part at adjacent bottom forming plates 2110A-1, 2110A-2 or 2110B-1, 2110B-2; and a resonant characteristic end 2173, so that the upper ends of a pair of resonant rods 2171a, 2171b are orthogonally connected to each other.

[0115] In more detail, Fig.14 As shown in parts (a), (c), and (d), the front ends and base parts of a pair of other parts (for example, resonant rods 2171a, 2171b) related to the resonant characteristic ends 2173A, 2173C, and 2173D of the multiple resonators 2170 can be spaced apart in parallel without considering the height of the cavity C in the thickness direction.

[0116] And, if Fig.14 As shown in part (b), the front ends of a pair of other parts (for example, resonant rods 2171a, 2171b) related to the resonant characteristic ends 2173B of the multiple resonators 2170 can be gradually separated from their bases along the thickness direction of the cavity C.

[0117] Among them, Fig.14 As shown in parts (a) to (d) of the drawings, the resonant characteristic ends 2173A, 2173B, 2173C, and 2173D of the plurality of resonators 2170 may be at least equal to (refer to Fig.14 (c) of the Fig.14 The width of the front end of the above-mentioned pair of other parts (for example, the resonance rod 2171) (part (a), part (b), part (d)).

[0118] Moreover, if Fig.14 As shown in part (c) of FIG. 1 , in a pair of resonant rods (2171a, 2171b) associated with the resonant characteristic end 2173C of the plurality of resonators 2170, the width and length may gradually increase along the front end of the base portion thereof, as shown in FIG. Fig.14 As shown in part (d), in a pair of resonant rods 2171a and 2171b associated with the resonant characteristic end 2173D of the plurality of resonators 2170, the widths of the base and front ends are the longest, and the width of the middle portion is the shortest.

[0119] Furthermore, in the filter 100 for communication equipment according to the first embodiment of the present invention, as one of the resonators 170 integrally formed, when folded, 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 115B formed on the bottom forming plate 110 of the main body. In the filter 2100 for communication equipment according to the second embodiment of the present invention, the input terminal pin 2175A and the output terminal pin 2175B are separately configured and are respectively fixedly provided through the input port setting portion (not shown in the figure mark) formed on the thickness forming plate 2120 on one side and the output port setting portion (not shown in the figure mark) formed on the thickness forming plate 2130 on the other side.

[0120] The input terminal pin 2175A is connected to the above-mentioned input port and one of the multiple resonators 2170 to receive a signal transmitted from the input port formed on the main board not shown in the figure, and the output terminal pin 2175B can be connected to the output port and one of the multiple resonators 2170 to transmit a signal through the output port formed on the main board not shown in the figure.

[0121] On the other hand, in the communication device filter 2100 according to the second embodiment of the present invention, the folding method and order of the base plate 2105 are shown in FIG. 10 .

[0122] Fig.15a and Fig.15b 1 is a perspective view showing a filter for communication equipment according to a third embodiment of the present invention. Fig.16a and Fig.16b for Fig.15a and Fig.15b The interior perspective of Fig.17 for Fig.15a A top view of the substrate plate in the structure of Fig.18 To show Fig.15a An exploded perspective view of an embodiment in which input terminal pins and output terminal pins are respectively arranged in a structure of Fig.19 For Fig.15a A cutaway stereoscopic view of a structure in which a portion of an upper plate forming portion is removed.

[0123] Reference Figures 15a to 19 In the filter 2200 for communication equipment in the third embodiment of the present invention, the substrate plate 2205 may include: a main body bottom forming plate 2210; a thickness forming plate 2220 on one side and a thickness forming plate 2230 on the other side; a shielding plate 2280A on one side and a shielding plate 2280B on the other side; a plurality of resonators 2270; and a partition plate 2290.

[0124] In more detail, after folding, the substrate plate 2205 may include: a main body bottom forming plate 2210A-1, 2210A-2 on one side, used to form the bottom portion of the cavity C, with the bottom portion on one side being formed based on the center in the length direction; a main body bottom forming plate 2210B-1, 2210B-2 on the other side, with the bottom portion on the other side being formed based on the center in the length direction; a thickness forming plate 2220 on one side, forming a side wall of the cavity C; a thickness forming plate 2230 on the other side, forming a side wall of the cavity C on the other side; a shielding plate 2280A on one side, used to shield an open portion on one side in the length direction of the cavity C; a shielding plate 2280B on the other side, used to shield an open portion on the other side in the length direction of the cavity C; a plurality of resonators 2170, formed protruding along the thickness direction on the bottom portion of the cavity C; and a partition 2190, separating the cavity C into two spaces along the width direction.

[0125] In particular, when the main body bottom forming plates 2210A-1 and 2210A-2 on one side and the main body bottom forming plates 2210B-1 and 2210B-2 on the other side forming the bottom of the cavity C are divided into four parts along the length direction, a part 2270-1 of the plurality of resonators 2270 is arranged as a whole in a row along the width direction between two main body bottom forming plates (i.e., the first main body bottom forming plate 2210A-1 and the second main body bottom forming plate 2210A-2) on one side in the length direction, and the plurality of resonators 2270 Another part 2270-2 is arranged in a row as a whole along the width direction between two main body bottom forming plates (i.e., the first one side main body bottom forming plate 2210A-2 and the second one side main body bottom forming plate 2210B-2) in the middle of the length direction, and the remaining part 2270-3 of the plurality of resonators 2270 can be arranged in a row as a whole along the width direction between two main body bottom forming plates (i.e., the second other side main body bottom forming plate 2210B-1 and the first other side main body bottom forming plate 2210B-2) on the other side of the length direction. Therefore, a total of 6 resonators 2270 can be arranged in three rows of two along the width direction, or can be arranged in two rows of three along the length direction.

[0126] Furthermore, in the main body bottom forming plate 2210, the outer end of the first side main body bottom forming plate 2210A-1 on the outermost side in the length direction may be integrally formed with a side shielding plate 2280A for shielding one of the open parts on one side and the other side in the length direction of the cavity C, and the two ends of the side shielding plate 2280A in the width direction may be extended to integrally form a side thickness forming plate 2220 and a side thickness forming plate 2230, and the side thickness forming plate 2220 and the side thickness forming plate 2230 may be formed with the other side shielding plate 2280B (i.e., refer to Fig.17The first other side shielding plate 2280B-1 and the second other side shielding plate 2280B-2 are used to shield the open other side of the cavity C in the length direction.

[0127] On the other hand, a partition plate 2290 can be integrally formed at the outer end of one of the other side shielding plates 2280B (in the third embodiment 2200 of the present invention, the first other side shielding plate 2280B-1 is equivalent to this), separating the cavity C into two spaces on one side and the other side along the width direction, and at least one window 2291, 2292 is cut to form.

[0128] In the communication device filter 2200 of the third embodiment of the present invention, the folding method and order of the substrate plate 2205 are as follows: Fig.17 shown.

[0129] Although the communication device filters 100, 200, 300, and 400 of the embodiments of the present invention are described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the above embodiments, and a person skilled in the art of the present invention can perform various modifications and implementations within the scope of equivalent technologies. Therefore, the true protection scope of the present invention should be defined based on the protection scope of the invention claims.

[0130] Industrial Applicability

[0131] The present invention provides a communication device filter that can reduce the amount of insertion loss caused by the connection of two physical structures by omitting the conventional joining process for forming a cavity and arranging structures such as a resonator in the cavity.

Claims

1. A filter for communication equipment, It is characterized in that The invention comprises a substrate plate made of a conductive material and manufactured in an unfolded state. 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 predetermined length in a thickness direction or a width direction. The plurality of resonators include a resonance characteristic end, and a front end portion of the resonance characteristic end is integrally connected to a front end of a pair of other portions extending in the thickness direction in the cavity.

2. The communication device filter according to claim 1, It is characterized in that At least one of the plurality of resonators is connected to a separately configured input terminal pin, the input terminal pin being connected to an input port to receive a signal transmitted from the input port of the mainboard, At least one of the other resonators is connected to a separately configured output terminal pin, and the output terminal pin is connected to an output port to transmit a signal through the output port of the mainboard.

3. The communication device filter according to claim 1, It is characterized in that The plurality of resonators include: a pair of resonant rods, equivalent to the pair of other parts mentioned above; and The above-mentioned resonant characteristic end connects the front ends of the above-mentioned pair of resonant rods. The front ends of the pair of resonant rods are gradually spaced apart along the thickness direction of the cavity.

4. The communication device filter according to claim 1, It is characterized in that The plurality of resonators include: a pair of resonant rods, equivalent to the pair of other parts mentioned above; and The above-mentioned resonant characteristic end connects the front ends of the above-mentioned pair of resonant rods. The front ends of the pair of resonant rods are spaced apart in parallel along the thickness direction of the cavity.

5. The communication device filter according to claim 1, It is characterized in that The plurality of resonators include: a pair of resonant rods, equivalent to the pair of other parts mentioned above; and The above-mentioned resonant characteristic end connects the front ends of the above-mentioned pair of resonant rods. The resonant characteristic ends of the plurality of resonators are at least equal to or greater than the width of the front ends of the pair of resonant rods.

6. The communication device filter according to claim 1, It is characterized in that The plurality of resonators include: a pair of resonant rods, equivalent to the pair of other parts mentioned above; and The above-mentioned resonant characteristic end connects the front ends of the above-mentioned pair of resonant rods. In the pair of resonant rods, the width of the base portion corresponding to the bottom portion of the cavity and the front end is the longest, and the width of the middle portion is the shortest.

7. The communication device filter according to claim 1, It is characterized in that The substrate plate is made of a conductive material or a non-conductive material. When the base plate is made of a non-conductive material, a film of a conductive substance is formed at least in the interior corresponding to the cavity by plating.

8. The communication device filter according to claim 1, It is characterized in that The cavity is filled with air having a dielectric constant of 1.

9. The communication device filter according to claim 1, It is characterized in that After folding, the substrate sheet comprises: The bottom of the main body is formed into a plate, which is used to form the bottom surface of the cavity; One side thickness forming plate and the other side thickness forming plate are used to increase the dimension of the cavity in the thickness direction; and The upper part of the main body forms a plate for covering the upper part of the cavity.

10. The communication device filter according to claim 9, It is characterized in that The main body bottom forming plate comprises: A bottom forming plate of one side of the main body is used to form a bottom surface portion of one side of the cavity; and The bottom of the other side of the main body forms a plate for forming the bottom surface 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 surface portion of the cavity except for the portion where the resonator is formed.

11. The communication device filter according to claim 9, It is characterized in that After being folded, the substrate plate further comprises a shielding plate on one side and a shielding plate on the other side, which are used to shield one end and the other end of the cavity in the length direction.

12. The communication device filter according to claim 9, It is characterized in that The plurality of resonators are formed on the one side body bottom forming plate and the other side body bottom forming plate.

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