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 comprise resonance characteristic ends, the resonance characteristic ends are flat and have widths wider than those of other parts, so that the front end parts and the other parts form the same layer in the cavity, and the advantages that miniaturization manufacturing is easy, insertion loss is reduced, resonance characteristics can be improved, and the like are provided.

Description

Technical Field

[0001] The present invention relates to a filter for communication equipment, and more particularly, to a filter for communication equipment that is easy to manufacture, can easily secure a usable 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 generally composed of a connected structure of multiple resonators. This resonator is a circuit device that uses an equivalent electronic circuit to make the combination of an inductor L and a capacitor C resonate at a specific frequency. Each resonator has a structure in which a dielectric resonant element (DR) or a metal resonant element is set inside a cavity (cavity) such as a metal cylinder or a rectangular parallelepiped surrounded by a conductor. As a result, each resonator forms a structure capable of high-frequency resonance by only having an electromagnetic field with a natural frequency within the processing frequency band within the corresponding cavity. Typically, multiple resonant stages are formed using multiple cavities, with a multi-stage structure having multiple resonant stages connected in sequence.

[0003] As an example of a radio frequency filter having a multi-cavity structure, 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 to obtain 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 separating resonators in multiple cavities, additional conductive materials for achieving inductive coupling or capacitive coupling are required. As a result, the finished filter suffers from a significant increase in weight.

[0006] Meanwhile, in antenna devices that utilize 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 overall product miniaturization. Dielectric ceramic filters are the most commonly used filter type for this purpose.

[0007] However, due to its material properties, the dielectric ceramic filter needs to be directly attached to one side of the main board (or PA board) stacked inside the antenna housing. Therefore, there is an inevitable problem of 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 present invention aims to provide a filter for communication equipment that can reduce the insertion loss caused by the connection between two physical structures by omitting the conventional bonding process for forming a cavity and placing a resonator and other structures within 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. Ordinary technicians in the technical field to which the present invention belongs can clearly understand other technical problems not mentioned through the following description.

[0012] Technical Solution

[0013] A filter for communication equipment according to one embodiment of the present invention includes a substrate plate made of a conductive material and manufactured in an unfolded state. When folded, a cavity is formed inside. The folding forms a space for accommodating multiple resonators. The multiple resonators protrude from the interior of the cavity by a predetermined length in the thickness direction or the width direction. The multiple resonators include a resonant characteristic end. The resonant characteristic end is flat and has a width wider than other parts, so that the front end and the other parts form the same layer within the cavity.

[0014] Among them, at least one of the above-mentioned multiple resonators has an input terminal pin formed in an integral manner, and the above-mentioned input terminal pin is connected to the input port to receive the signal transmitted from the above-mentioned input port, and at least one of the other above-mentioned multiple resonators can have an output terminal pin formed in an integral manner, and the above-mentioned output terminal pin is connected to the output port to transmit the signal through the above-mentioned output port.

[0015] Furthermore, the resonant characteristic ends of the plurality of resonators may be integrally extended and formed at the front end of the other portion in an angular manner.

[0016] Furthermore, the resonant characteristic ends of the plurality of resonators may be integrally extended in an arc shape at the front end of the other portion.

[0017] Furthermore, the resonant characteristic ends of the plurality of resonators may be integrally extended and formed at the front end of the other portion in a U-shape surrounding the front end of the other portion.

[0018] 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 is formed at least inside the cavity by plating.

[0019] Furthermore, the cavity may be filled with air having a dielectric constant of 1.

[0020] Furthermore, after folding, the above-mentioned substrate plate may include: a main body bottom forming plate, used to form the bottom portion of the above-mentioned cavity; a one side thickness forming plate and an other side thickness forming plate, used to increase the thickness direction dimension of the above-mentioned cavity; a resonator plate, provided with a plurality of resonators, and the above-mentioned plurality of resonators are protrudingly arranged in the above-mentioned cavity corresponding to the upper part of the above-mentioned main body bottom forming plate; and a main body upper forming plate, used to cover the upper part of the above-mentioned cavity.

[0021] Furthermore, after being folded, the substrate plate may further include 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 longitudinal direction.

[0022] Furthermore, after being folded, the base plate may further include a notch forming plate disposed between the main body upper forming plate and the plurality of resonators of the resonator plate.

[0023] Furthermore, at least one of the multiple resonators is integrally formed with an input terminal pin, which is connected to the input port to receive a signal transmitted from the input port, and at least one of the other multiple resonators is integrally formed with an output terminal pin, which is connected to the output port to transmit a signal through the output port. In the bottom forming plate of the main body, an input port setting portion and an output port setting portion through which the input terminal pin or the output terminal pin is set are formed in a boss shape, and a fixing protrusion in the shape of a stud or a serrated protrusion may be formed on the inner circumference of the hole of the input port setting portion and the output port setting portion for fixing the Teflon.

[0024] Effects of the Invention

[0025] The filter for communication equipment of the present invention can be manufactured through 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, communication reliability can be improved by reducing the insertion loss caused by applying the joining process.

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

[0027] Figure 1 FIG1 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 .

[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 provided in a structure.

[0032] Figure 6 The three-dimensional cross-section diagram (a, b) is taken along line AA.

[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 9 FIG1 is a perspective view showing a filter for communication equipment according to a second embodiment of the present invention.

[0036] Figure 10 for Figure 9 interior perspective view.

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

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

[0039] Figure 13 and Figure 14 For Figure 9 A cutaway perspective view of the structure in which a portion of the upper plate forming portion is removed along lines BB and CC.

[0040] Figure 15 for Figure 9 Stereoscopic view and partial enlarged view.

[0041] Figure 16 To show Figure 9 A perspective view of a second example of a structure with multiple resonators.

[0042] Figure 17 FIG1 is a perspective view showing a filter for communication equipment according to a third embodiment of the present invention.

[0043] Figure 18 for Figure 17 interior perspective view.

[0044] Figure 19 for Figure 17 A top view of the substrate plate in the structure.

[0045] Figure 20 To show Figure 17 An exploded perspective view of an embodiment in which input terminal pins and output terminal pins are respectively provided in a structure.

[0046] Figure 21 (a, b) are cross-sectional perspective views taken along line DD.

[0047] Figure 22 FIG1 is a perspective view showing a filter for communication equipment according to a fourth embodiment of the present invention.

[0048] Figure 23 for Figure 22 interior perspective view.

[0049] Figure 24 for Figure 22 A top view of the substrate plate in the structure.

[0050] Figure 25 To show Figure 22 An exploded perspective view of an embodiment in which input terminal pins and output terminal pins are respectively provided in a structure.

[0051] Figure 26 (a, b) are sectional perspective views taken along line EE.

[0052] Figure 27 This is a three-dimensional diagram of an embodiment of the present invention in an unfolded state that is closest to the actual product form.

[0053] Figure 28 To show Figure 27 A three-dimensional view of a portion of a substrate plate in a folded state.

[0054] Description of Reference Signs

[0055] 100: First embodiment 105: Base material plate

[0056] 110: Main body bottom forming plate 120: One side thickness forming plate

[0057] 130: Other side thickness forming plate 140: Notch forming plate

[0058] 150: Main body upper forming plate 160: Resonator plate

[0059] 170: Multiple resonators 200: Second embodiment

[0060] 300: Third embodiment 400: Fourth embodiment DETAILED DESCRIPTION

[0061] Hereinafter, a communication device filter according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0062] In assigning reference numerals to the structural elements of the various drawings, it should be noted that even if the same structural elements are shown in different drawings, the same reference numerals are assigned to them as much as possible. Furthermore, in describing the embodiments of the present invention, if it is determined that the detailed description of a well-known structure or function would hinder the understanding of the embodiments of the present invention, the detailed description will be omitted.

[0063] 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 generally understood by those skilled in the art to which the present invention belongs. Terms defined in commonly used dictionaries should be interpreted as having the same meaning as in the context of the relevant technology, and should not be interpreted as idealized or overly formalized meanings unless explicitly defined in this specification.

[0064] 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 An interior perspective view of Figure 3 To show Figure 1 A 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 provided in a structure of Figure 6 The three-dimensional images (a, b) are 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 its top view, Figure 8 To show Figure 1 A perspective view of a first example of a structure with multiple resonators.

[0065] 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 transmission and reception process, thereby obtaining only a signal desired by a consumer (user) as a result value.

[0066] 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.

[0067] However, to date, in the same industry for manufacturing antenna devices, only the following process has been disclosed: in order to manufacture a cavity filter, the interior 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.

[0068] However, the technical features of the communication device filter in the embodiments of the present invention are that they eliminate the need for the aforementioned manufacturing process. Instead, a single flat substrate sheet, not exceeding a specified thickness, is processed into sheet metal, and then a folding process is used to construct the structure within the cavity, eliminating the need for an additional bonding step. The specific technical features are described below, following the examples.

[0069] The filter 100 for communication equipment according to the first embodiment of the present invention includes a substrate plate 105 made of a conductive material and manufactured in an unfolded state. When folded, a cavity C is formed inside. The folding forms a space for accommodating multiple resonators 170, and the above-mentioned multiple resonators protrude from the interior of the cavity C by a specified length along the thickness direction or the width direction.

[0070] Preferably, the substrate plate 105 is made of a conductive material, but it can also be made of a non-conductive material that is easy to manufacture. Subsequently, a film of conductive material can be formed on the inside and outside of the cavity C or at least on the inside corresponding to the cavity C by plating so that the function of the cavity C can be performed.

[0071] However, as described below, the substrate sheet 105 needs to continue to maintain its shape after being deformed by the folding process unless an external force is applied, and therefore, preferably, the substrate sheet 105 should be made of a deformable material that can be properly processed.

[0072] Among them, cavity C serves as a dielectric filling space for filling a dielectric with a specified dielectric constant, which refers to a space in an empty state inside for filling with a dielectric. Since air is also a dielectric with a dielectric constant of 1, it should be made clear in advance that when air at atmospheric pressure is used as the dielectric, no separate dielectric filling process is required.

[0073] 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.

[0074] Among them, such as 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 an other side thickness forming plate 130, which extend in plane at one side end and the other side end in the width direction of the main body bottom forming plate 110 and increase the thickness direction dimension of the cavity C to increase the length of the width; a resonator plate 160, which is extended 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 are 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, which is extended from the other front end of the one side thickness forming plate 120 and the other side thickness forming plate 130, faces the main body bottom forming plate 110 and covers the upper part of the cavity C.

[0075] Furthermore, one end and the other end of the plate 110 formed at the bottom of the main body in the longitudinal direction can be integrally extended to form a one side shielding plate 180A and the other side shielding plate 180B for shielding one end and the other end of the open longitudinal direction of the cavity C.

[0076] Although one side shielding plate 180A and the other side shielding plate 180B are shown as being integrally formed with the main body bottom forming plate 110, they may alternatively be symmetrically formed integrally with adjacent plates (e.g., the main body upper forming plate 150) depending on the embodiment. Furthermore, even if one side shielding plate 180A and the other side shielding plate 180B are formed as two separate components integrally with adjacent plates, they can be folded to completely shield the open portion of each cavity C.

[0077] 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 passing through the upper and lower parts may be respectively provided at one end portion in the longitudinal direction and the other end portion in the longitudinal direction. The following input terminal pin 175A is 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.

[0078] In particular, Figure 7As shown, the 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 inside of the cavity C.

[0079] 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 integral manner on the inner peripheral surface 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 Teflon 118 is forcibly buckled in, the advantage of minimizing insertion loss can be achieved by stably fixing the Teflon 118.

[0080] 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.

[0081] The shape of the notch forming plate 140 corresponds to the surrounding shape of the cavity C, forming a frame shape that passes through from top to bottom, and may be provided with an L-shaped notch portion 141 and a C-shaped notch portion 142 of specific shapes at one inner end and the other inner end in the width direction, respectively.

[0082] 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.

[0083] Reference Figure 3 and Figure 4 When the notch forming plate 140 and the main body upper forming plate 150 are set at the same time, the substrate plate 105 can be formed into 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.

[0084] 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.

[0085] Moreover, 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 with the resonator plate 160 along the thickness direction.

[0086] On the other hand, in the plate 150 formed on the upper part of the main body, a plurality of resonators 170 form a single layer inside the cavity C with respect to the thickness direction, and a plurality of coupling adjustment rods (not shown) that are respectively deformed in shape directly downward between the frequency tuning rod (not shown) for performing micro frequency tuning by adjusting the separation distance from the plurality of resonators 170 and the plurality of resonators 170 can be formed as a single piece by cutting.

[0087] Furthermore, a tool insertion hole (not shown) is formed vertically through the main body upper forming plate 150 , thereby allowing the shapes of the L-shaped notch portion 141 and the C-shaped notch portion 142 to be changed using a predetermined tool.

[0088] Among them, such as 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 upper and lower thickness directions than in the front and back width directions, multiple resonators 170 can form the same single layer relative to the thickness direction of the cavity C.

[0089] 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 in the thickness direction of the cavity C, or may form a single layer different from the plurality of resonators 170 .

[0090] In this case, the thickness of each single layer formed by multiple resonators 170, L-shaped notch portions 141, and C-shaped notch portions 142 is used as the thickness of the substrate plate 105. At the point where a very thin thickness is formed, the ultra-thin design desired by the designer can be designed without increasing the size including the thickness of the entire product.

[0091] On the other hand, refer to Figure 8 The multiple resonators 170 may include a resonant characteristic end 173 , the front end of which is flat and wider, and forms the same layer as other parts within the cavity C. Hereinafter, for convenience of description, as the various structural parts of the multiple resonators 170 extend from the substrate plate 105 as a whole, the main body part connecting the resonant characteristic end and the front end is referred to as a resonant rod 171 .

[0092] Among them, at least one of the multiple resonators 170 can form an input terminal pin 175A in an integral manner, connected to the input port to receive a signal transmitted from the input port (not shown), and another of the multiple resonators 170 can form an output terminal pin 175B in an integral manner, connected to the output port to transmit a signal through the output port (not shown).

[0093] 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 integrally extended at the front end of the other portion (resonant rod 171 ) in an angular manner.

[0094] And, as Figure 8 As shown in part (b) of FIG. 1 , the resonant characteristic ends 173 of the plurality of resonators 170 may be integrally extended in an arc manner at the front end of the other portion (resonant rod 171 ).

[0095] Finally, if Figure 8 As shown in part (c), the resonant characteristic ends 173 of the multiple resonators 170 can be formed as a whole extending 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).

[0096] 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.

[0097] 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 plate and stamped into a pre-designed shape (stamping sheet metal processing step).

[0098] 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, the one side partition plate 151 and the other side partition plate 152) through the following folding process.

[0099] Moreover, after the substrate plate 105 is subjected to stamping sheet metal processing through a stamping sheet metal processing process, 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 process, and then the folding process for forming the cavity C can be performed in sequence.

[0100] Among them, the folding process folds the cavity C from the bottom to the top in sequence based on the main body bottom forming plate 110 to form the required related plates. The multiple resonators 170 formed on the resonator plate 160 are folded to form the same layer (or 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.

[0101] Figure 9 1 is a perspective view showing a filter for communication equipment according to a second embodiment of the present invention. Figure 10 for Figure 9 An interior perspective view of Figure 11 for Figure 9 A top view of the substrate plate in the structure of Figure 12 To show Figure 9 An exploded perspective view of an embodiment in which input terminal pins and output terminal pins are respectively provided in a structure of Figure 13 and Figure 14 For Figure 9 A cutaway perspective view of a structure in which a portion of the upper plate forming portion is removed along lines BB and CC. Figure 15 for Figure 9 The three-dimensional diagram and partial enlarged diagram of Figure 16 To show Figure 9 A perspective view of a second example of a structure with multiple resonators.

[0102] like Figures 9 to 16 As shown, in the filter 200 for communication equipment according to the second embodiment of the present invention, a small rectangular cavity C is formed by a folding process of various parts of the substrate plate 205. Similar to the first embodiment 100 described above, a plurality of resonators 270, L-shaped notches 241, and C-shaped notches 241 are formed to form different single layers inside the cavity C along the thickness direction.

[0103] In more detail, Figures 9 to 16As shown, in the filter 200 for communication equipment according to the second embodiment of the present invention, after folding, the substrate plate 205 may include: a main body bottom forming plate 210 for forming the bottom portion of the cavity C; a one side thickness forming plate 220 and a other side thickness forming plate 230, which extend from one side end and the other side end plane in the width direction of the main body bottom forming plate 210 to increase the length of the width, for increasing the size of the cavity C in the thickness direction; a resonator plate 260, which extends from one front side of the one side thickness forming plate 220 and the other side thickness forming plate 230. The end (the other side thickness forming plate 230 in the second embodiment of the present invention is equivalent to this) is extended to form, and a plurality of resonators 270 are provided. The above-mentioned plurality of resonators 270 are protrudingly arranged in the cavity C corresponding to the upper part of the main body bottom forming plate 210; and the main body upper forming plate 250 is extended from the other front end of the one side thickness forming plate 220 and the other side thickness forming plate 230, covers the upper part of the cavity C facing the main body bottom forming plate 210, and is cut to form an L-shaped notch portion 241 and a C-shaped notch portion 242.

[0104] Furthermore, one end and the other end of the plate 210 formed at the bottom of the main body in the longitudinal direction can be integrally extended to form a one side shielding plate 280A and the other side shielding plate 280B for shielding the one end and the other end of the cavity C in the longitudinal direction.

[0105] Among them, the one side shielding plate 280A and the other side shielding plate 280B are not limited to being formed as an integral part on the bottom forming plate 210 of the main body. According to the embodiment, they can also be symmetrically arranged as a whole with adjacent plates (for example, the upper forming plate 250 of the main body, etc.), and are formed as an integral part on adjacent plates so that the one side shielding plate 280A and the other side shielding plate 280B are divided into two parts, and each open cavity C can be completely shielded by folding.

[0106] Moreover, similar to the communication device filter 100 of the first embodiment described above, in the communication device filter 200 of the second embodiment of the present invention, the main body bottom forming plate 210 may include an input port setting portion 215A and an output port setting portion 215B, which are respectively formed through the upper and lower ends at one end portion in the longitudinal direction and the other end portion in the longitudinal direction. The input port setting portion 215A is provided with an input terminal pin 275A, and the output port setting portion 215B may be provided with the following output terminal pin 275B, such as Figure 7 As shown, a fixing protrusion 117 with a stud or a serrated protrusion shape for stably fixing the Teflon 118 is integrally formed on the inner peripheral surface of the hole of the input port setting part 215A and the output port setting part 215B where the input terminal pin 275A or the output terminal pin 275B is set. Thus, as the Teflon 118 is forcibly buckled in, the advantage of minimizing the insertion loss can be achieved by stably fixing the Teflon 118.

[0107] Moreover, the difference between the first embodiment of the present invention and the second embodiment of the present invention is that in the communication device filter 100 of the first embodiment of the present invention, the upper forming plate 150 of the main body and the resonator plate 160 form a height difference due to their different heights in the thickness direction, but in the communication device filter 200 of the second embodiment of the present invention, since the upper forming plate 250 of the main body and the resonator plate 260 have the same height in the thickness direction, they can actually provide the effect of mutually shielding the upper part of the cavity C.

[0108] And, refer to Figures 9 to 16 Compared to the first embodiment 100, the communication equipment filter 200 of the second embodiment of the present invention does not include a notch forming plate having an L-shaped notch portion 241 and a C-shaped notch portion 242. Therefore, the difference is that when the sheet metal stamping process is performed in advance, the L-shaped notch cut groove 241h and the C-shaped notch cut groove 242h formed on the upper forming plate 250 of the main body are formed into a whole in the cut shape by using a prescribed tool or stamping equipment.

[0109] On the other hand, Figure 11 As shown, the filter 200 for communication equipment according to the second embodiment of the present invention may further be formed with a bending line 270' to prevent the plurality of resonators 270 from forming a single layer at the same height as the resonator plate 260, and to bend at a position lower than the resonator plate 260 and the plate 250 formed on the upper portion of the main body to form a single layer within the cavity C.

[0110] Furthermore, the plurality of resonators 270 may be arranged in accordance with Figure 16 The methods shown form various examples.

[0111] In more detail, the plurality of resonators 270 may include a resonant characteristic end 273 , a front end portion of which is bent perpendicularly to the length direction of the other portion (the resonant rod 271 ) and has a wider width.

[0112] Among them, such as Figure 16 As shown in part (a), the resonant characteristic ends 273 of multiple resonators 270 can be formed as an integral extension at the front end of the above-mentioned other parts (resonant rods 271) so that one end of the rectangle is bent vertically relative to the front end of the above-mentioned other parts (resonant rods 271).

[0113] And, as Figure 16 As shown in part (b), the resonant characteristic ends 273 of the multiple resonators 270 can be formed as an integral extension at the front end of the above-mentioned other parts (resonant rod 271) so that the arc-shaped middle part with an opening on one side is bent vertically relative to the above-mentioned front end.

[0114] Finally, the resonant characteristic ends 273 of the multiple resonators 270 can extend integrally to form at the front end of the above-mentioned other part (resonant rod 271), so that the middle part of the "匚"-shaped with one side open is vertically bent relative to the front end.

[0115] On the other hand, the filter 200 for a communication device according to the second embodiment of the present invention is different from the filter 100 for a communication device according to the first embodiment of the present invention in the folding method and order of the base substrate 205. The specific folding method and order are as Figure 11 shown.

[0116] Figure 17 To show a perspective view of the filter for a communication device according to the third embodiment of the present invention, Figure 18 is Figure 17 an internal perspective view, Figure 19 is Figure 17 a top view of the base substrate in the structure of Figure 20 To show Figure 17 an exploded perspective view of an embodiment in which input terminal pins and output terminal pins are respectively provided in the structure of Figure 21 is a sectional perspective view (a, b) cut along the line D-D.

[0117] As Figures 17 to 21 shown, in the filter 300 for a communication device according to the third embodiment of the present invention, each part of the base substrate 305 forms a small cuboid-shaped cavity C due to folding. Similar to the filter 100 for a communication device according to the first embodiment of the present invention and the filter 200 for a communication device according to the second embodiment of the present invention, multiple resonators 370, L-shaped notch portions 341, and C-shaped notch portions 342 are formed to respectively form different single layers along the thickness direction inside the cavity C.

[0118] More specifically, referring to Figures 17 to 21In the filter 300 for communication devices according to the third embodiment of the present invention, after folding, the substrate plate 305 may include: a main body bottom forming plate 310 for forming the bottom portion of the cavity C; a one-side thickness forming plate 320, which extends from a plane on one side of the width direction of the main body bottom forming plate 310 to increase the length of the width, thereby increasing the size of the cavity C in the thickness direction; and a second-side thickness forming plate 330, which extends from a plane on the other side of the width direction of the main body bottom forming plate 310 to increase the length of the width, thereby partially increasing the size of the cavity C in the thickness direction. Inch; the main body upper forming plate 350 is extended from one side thickness forming plate 320, covers the upper part of the cavity C facing the main body bottom forming plate 310, and is formed with an L-shaped notch cutting groove 341h and a C-shaped notch cutting groove 342h to process the L-shaped notch portion 341 and the C-shaped notch portion 342; and the resonator plate 360 ​​is extended from the other side end in the width direction of the main body upper forming plate 350, and is provided with a plurality of resonators 370, and the above-mentioned plurality of resonators 370 are protruded and arranged in the cavity C corresponding to the upper part of the main body bottom forming plate 310.

[0119] Furthermore, one end and the other end of the plate 310 formed at the bottom of the main body in the longitudinal direction can be integrally extended to form a one side shielding plate 380A and the other side shielding plate 380B for shielding the one end and the other end of the cavity C in the longitudinal direction.

[0120] Compared with the filter 100 for communication equipment according to the first embodiment of the present invention, the filter 300 for communication equipment according to the third embodiment of the present invention does not include a notch forming plate having an L-shaped notch portion 341 and a C-shaped notch portion 342. Therefore, the difference is that the L-shaped notch cut groove 341h and the C-shaped notch cut groove 342h formed on the upper forming plate 350 of the main body are formed into a whole in the cut shape by using a prescribed tool or stamping equipment to form a part that can protrude due to shape deformation on the inner side of the thickness direction of the cavity C.

[0121] Furthermore, if the communication device filter 300 according to the third embodiment of the present invention is compared with the communication device filter 200 according to the second embodiment of the present invention, the difference lies in that the portion where butt welding is ultimately performed in the structure of the substrate plate 305 for forming the cavity C is designed to be realized by the widthwise outer end of the main body upper forming plate 250 and the widthwise outer end of the resonator plate 260 serving as the forming portion of the plurality of resonators 270 in the case of the communication device filter 200 according to the second embodiment of the present invention. A thickness-forming plate 330 having an other side with an area equivalent to half the area is integrally provided at the outer end of the main body upper forming plate 350, and the outer end of the resonator plate 360 ​​to which the plurality of resonators 370 are connected can be butt-welded to the thickness-forming plate 330 on the other side.

[0122] On the other hand, the third embodiment 300 is different from the first embodiment 100 and the second embodiment in the folding method and order of the substrate plate 305. The specific folding method and order are as follows: Figure 19 shown.

[0123] Figure 22 1 is a perspective view showing a filter for communication equipment according to a fourth embodiment of the present invention. Figure 23 for Figure 22 An interior perspective view of Figure 24 for Figure 22 A top view of the substrate plate in the structure of Figure 25 To show Figure 22 An exploded perspective view of an embodiment in which input terminal pins and output terminal pins are respectively provided in a structure of Figure 26 (a, b) are sectional perspective views taken along line EE.

[0124] Reference Figures 22 to 26 In the communication device filter 400 according to the fourth embodiment of the present invention, various portions of the substrate plate 405 are folded to form a small rectangular cavity C. Similar to the first to third embodiments 100 to 300 described above, a plurality of resonators 470, L-shaped notches 441, and C-shaped notches 442 are formed to form different single layers within the cavity C along the thickness direction.

[0125] For more details, refer to Figures 22 to 26 In the filter 400 for communication equipment of the fourth embodiment of the present invention, after folding, the substrate plate 405 may include: a main body bottom forming plate 410, which is used to form the bottom portion of the cavity C; a one-side thickness forming plate 420, which extends from a plane on one side of the width direction of the main body bottom forming plate 410 to increase the length of the width, and is used to increase the size of the cavity C in the thickness direction; the other-side thickness forming plate 430, which extends from a plane on the other side of the width direction of the main body bottom forming plate 410 to increase the length of the width, and is used to partially increase the size of the cavity C in the thickness direction; a main body upper forming plate 450, which extends from the outer end plane in the width direction of the one-side thickness forming plate 420 to increase the width length, and is connected to the main body bottom forming plate 410 covers the upper part of the cavity C in opposite directions; and the resonator plate 460 extends from the outer end plane of the main body upper forming plate 450 to increase the length of the width, and is provided with a plurality of resonators 470, and the above-mentioned plurality of resonators 470 are protrudingly arranged in the cavity C corresponding to the upper part of the main body bottom forming plate 410; and the notch forming plate 440 extends from the outer end plane of the other side thickness forming plate 430 to increase the length of the width, and is formed with an L-shaped notch portion 441 and a C-shaped notch portion 442, and the above-mentioned L-shaped notch portion 441 and the C-shaped notch portion 442 are arranged in the cavity C corresponding to the upper part of the main body bottom forming plate 410. The resonator plate 460 and the plurality of resonators 470 are arranged in a single layer in the lower part of the cavity C.

[0126] Furthermore, one end and the other end of the plate 410 formed at the bottom of the main body in the longitudinal direction can be integrally extended to form a side shielding plate 480A and another side shielding plate 480B for shielding the one end and the other end of the cavity C in the longitudinal direction.

[0127] Reference Figures 22 to 26 The difference between the communication device filter 400 of the fourth embodiment of the present invention and the first embodiment 100 is that the notch forming plate 440 having the L-shaped notch portion 441 and the C-shaped notch portion 442 forms a single layer of the main body bottom forming plate 410 in the thickness direction that is relatively closer to the cavity C than the multiple resonators 470.

[0128] And, as Figures 22 to 26 As shown, the difference between the filter 400 for communication equipment of the fourth embodiment of the present invention and the second embodiment 200 and the third embodiment 300 is that the portion forming the resonant rod 471 in the multiple resonators 470 is formed as a whole in the shape of a groove at the chamfered portion (refer to the figure mark 465) so as not to overlap with the end of the resonator plate 460, and through the folding process of the substrate plate 405, the thickness forming plate 430 on the other side is additionally formed to form a filling-type upper portion (435) for separately filling the shape of the chamfered resonator plate 460.

[0129] On the other hand, the fourth embodiment 400 differs from the first embodiment 100 to the third embodiment 300 in the folding method and order of the substrate plate 405. The specific folding method and order are as follows: Figure 24 shown.

[0130] Figure 27 This is a three-dimensional diagram of the unfolded state of the embodiment of the present invention that is closest to the actual product form. Figure 28 To show Figure 27 A three-dimensional view of a portion of a substrate plate in a folded state.

[0131] Reference Figure 27 and Figure 28 In the embodiments 100 to 400 of the present invention, a plurality of tuning rods (190A) and a plurality of coupling adjustment rods (190B) may be further formed as a whole to adjust the predetermined spacing distance between the plurality of resonators 170 provided in the cavity C of the upper forming plate 150 of the main body due to the folding process. Thus, before the initial folding process of the substrate plate 105, as shown in FIG. Figure 28 As shown, the plurality of tuning rods 190A, coupling adjustment rods 190B, L-shaped notch 141, C-shaped notch 142, and resonators 170 can be folded as desired. In this case, the one-side terminal pin 175A and the other-side terminal pin 175B can also be bent and folded toward the input port setting portion 115A and the output port setting portion 115B during the folding process.

[0132] While the communication device filters 100, 200, 300, and 400 according to the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to these embodiments. Persons skilled in the art may implement various modifications and equivalents within the scope of the present invention. Therefore, the true scope of protection of the present invention should be defined based on the scope of the claims.

[0133] Industrial applicability

[0134] The present invention provides a communication device filter that can reduce the 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, 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. The folding forms a space for accommodating a plurality of resonators. The plurality of resonators protrude from the inside of the cavity by a predetermined length in the thickness direction or the width direction. The plurality of resonators include a resonant characteristic end having a flat shape and a width greater than that of other portions, such that a front end portion and the other portions form the same layer within the cavity.

2. The communication device filter according to claim 1, wherein: An input terminal pin is integrally formed on at least one of the plurality of resonators, and the input terminal pin is connected to the input port to receive a signal transmitted from the input port. An output terminal pin is integrally formed on at least one of the plurality of resonators, and the output terminal pin is connected to an output port to transmit a signal through the output port.

3. The communication device filter according to claim 1, wherein The resonant characteristic ends of the plurality of resonators are integrally formed and extended in an angular manner at the front end of the other portions.

4. The communication device filter according to claim 1, wherein The resonant characteristic ends of the plurality of resonators are integrally extended in an arc shape at the front end of the other portion.

5. The communication device filter according to claim 1, wherein The resonant characteristic ends of the plurality of resonators are integrally extended and formed at the front end of the other portion in a U-shape surrounding the front end of the other portion.

6. The communication device filter according to claim 1, wherein The substrate 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 material is formed at least in the interior corresponding to the cavity by plating.

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

8. The communication device filter according to claim 1, wherein After folding, the substrate sheet comprises: The bottom of the main body is formed into a plate for forming the bottom portion 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; a resonator plate provided with a plurality of resonators, wherein the plurality of resonators are protruded and disposed in the cavity corresponding to the upper portion of the bottom forming plate of the main body; and The upper portion of the main body forms a plate for covering the upper portion of the cavity.

9. The communication device filter according to claim 8, wherein: After being folded, the substrate plate further includes 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 longitudinal direction.

10. The communication device filter according to claim 8, wherein After being folded, the base plate further includes a notch forming plate disposed between the main body upper forming plate and the plurality of resonators of the resonator plate.

11. The communication device filter according to claim 8, wherein An input terminal pin is integrally formed on at least one of the plurality of resonators, and the input terminal pin is connected to the input port to receive a signal transmitted from the input port. At least one of the other resonators is integrally formed with an output terminal pin, the output terminal pin being connected to the output port to transmit a signal through the output port. In the bottom forming plate of the main body, the input port setting portion and the output port setting portion through which the input terminal pin or the output terminal pin is set are formed in a boss shape and are formed through and through, and a fixing protrusion in the shape of a stud or a serrated protrusion is formed on the inner circumference of the hole of the input port setting portion and the output port setting portion for fixing the Teflon.

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