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, comprising: a frequency tuning panel having a plurality of tuning rods arranged in a single layer with respect to a thickness direction in a dielectric-filled space to adjust a spacing distance from a plurality of resonators arranged in the dielectric-filled space; and a resonant substrate disposed in a single layer with respect to a thickness direction within the dielectric filling space, the plurality of resonators forming the single layer, and including a resonant frame having a rectangular bezel. Therefore, the thin design of the product can be realized, and the advantage of preventing the weight of the product from being increased is also 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 can be manufactured to be thin while achieving weight reduction. Background Art

[0002] A wireless radio frequency device such as a wireless frequency filter (all of which are included in the "communication equipment") is usually composed of a connection structure of multiple resonators. This resonator is a circuit element that resonates at a specific frequency through a combination of an inductor L and a capacitor C in an equivalent circuit. Each resonator has a structure in which a dielectric resonant element (DR) or a metal resonant element is arranged inside a cavity such as a metal cylinder or a rectangular hexahedron surrounded by a conductor. Accordingly, each resonator has a structure in which only the natural frequency of the processing frequency band exists in the cavity, thereby achieving high-frequency resonance. Usually, multiple resonant ends are formed by using multiple cavities, and a multi-terminal structure is provided in which multiple resonant ends are connected in sequence.

[0003] As a related example of a radio frequency filter having a plurality of cavity structures, the disclosure of Korean Patent Publication No. 10-2004-0100084 (title: radio frequency filter; publication date: Dec. 2, 2004) previously filed by the present applicant can be cited.

[0004] However, in the existing wireless frequency filters, each resonator extends in the thickness direction within the cavity. In order to have the desired bandpass and characteristics, a part of the filter tuning cover covering the cavity is deformed by engraving, and the distance between the filter and the resonator is adjusted to tune the frequency. Therefore, there is a problem of being very limited in reducing the size of the finished filter in the thickness direction.

[0005] In addition, the existing wireless frequency filter is used to enhance the edge characteristics between a plurality of adjacent resonators or between spaced resonators. In order to realize inductive coupling or capacitive coupling, an additional structure of a conductive material is required to be installed, thus pointing out the problem of significantly increasing the weight of the finished filter. Summary of the invention

[0006] (Problem to be solved)

[0007] The present invention is proposed to solve the above-mentioned technical problems, and its purpose is to provide a filter for communication equipment, including a tuning panel, wherein the tuning panel has a plurality of tuning rods, and the plurality of tuning rods are arranged in a single layer in the thickness direction in a dielectric filling space.

[0008] At the same time, another object of the present invention is to provide a filter for communication equipment as follows: a resonant substrate is configured in a dielectric filling space in a single layer different from a tuning panel in the thickness direction, and the spacing distance between the tuning panel and multiple resonators of the resonant substrate is adjusted to perform frequency tuning.

[0009] Furthermore, another object of the present invention is to provide a communication device filter including a notch forming portion, wherein the notch forming portion and a tuning panel are formed in the same single layer.

[0010] The technical issues of the present invention are not limited to the issues mentioned above, and other technical issues not mentioned can be clearly understood by ordinary technicians in the technical field to which the present invention belongs from the following description.

[0011] (Methods of solving the problem)

[0012] According to one embodiment of the present invention, a filter for communication equipment includes a frequency tuning panel having a plurality of tuning rods, wherein the plurality of tuning rods are arranged in a single layer in a dielectric filling space in a thickness direction to adjust the spacing distance between the plurality of resonators arranged in the dielectric filling space.

[0013] Here, the dielectric-filled space may be a closed space having a thickness smaller than the dimensions in the length direction and the width direction.

[0014] In addition, the frequency tuning panel may include: a tuning frame having a frame formed in a rectangular shape; and the plurality of tuning rods extending from the inner side of one long side of four sides of the tuning frame to the side of another long side.

[0015] Additionally, the plurality of tuning rods may be formed integrally with the tuning frame.

[0016] In addition, the plurality of tuning rods may be arranged at predetermined intervals in the length direction.

[0017] In addition, the plurality of tuning rods may be arranged at intervals in the length direction at positions corresponding to the plurality of resonators, respectively, and the plurality of resonators may be arranged at intervals in the thickness direction from the plurality of tuning rods in the dielectric-filled space.

[0018] In addition, the lengths of the plurality of tuning rods extending toward the other long side may be different from each other.

[0019] In addition, the frequency tuning panel may also include a notch forming portion, which forms a closed loop while protruding from the inner side of the other long side of the four sides of the tuning frame toward one long side, or does not form the closed loop but extends to be connected to the inner side of the one long side.

[0020] In addition, the notch forming portion may include an L-notch portion forming the closed loop and a C-notch portion not forming the closed loop.

[0021] In addition, the L-notch portion can achieve cross-coupling through the magnetic field properties between any three adjacent resonators in the dielectric-filled space.

[0022] In addition, the C-notch portion can achieve cross-coupling through the electric field properties between any three adjacent resonators in the dielectric-filled space.

[0023] In addition, the communication device filter may further include a resonant substrate configured as a single layer in the dielectric filling space in the thickness direction, the plurality of resonators forming the single layer, and including a resonant frame having a rectangular frame.

[0024] Furthermore, the plurality of resonators may be extended from any one of the four sides of the resonance frame to another long side by a predetermined length, and may be arranged to overlap the plurality of tuning rods by at least a predetermined length in the thickness direction.

[0025] The plurality of resonators may extend to be spaced apart from the other long side.

[0026] In addition, the communication device filter may further include a spacer panel, which is stacked in the dielectric filling space between the frequency tuning panel and the resonant substrate in a thickness direction to block direct contact between the frequency tuning panel and the resonant substrate.

[0027] In addition, the spacer panel may be formed to correspond to the frame shape of the tuning frame of the frequency tuning panel and the resonance frame of the resonance substrate.

[0028] In addition, the frequency tuning panel may include a tuning frame having a thickness greater than that of the plurality of tuning rods; and the resonant substrate may include a resonant frame having a thickness greater than that of the plurality of resonators.

[0029] In addition, the filter for communication equipment may also include: a filter body, which is formed with an opening on one side in the thickness direction of the dielectric filling space and forms a part of the dielectric filling space, and has a setting space inside to stack the resonant substrate and the frequency tuning panel; and a filter tuning cover, which covers one side of the opening of the filter body in the thickness direction and forms the remaining part of the dielectric filling space.

[0030] In addition, a plurality of space dividing ribs may be integrally formed on the inner side surface in the thickness direction of the filter body. The plurality of space dividing ribs divide a portion of the dielectric-filled space and are formed to protrude to partition between the plurality of resonators of the resonant substrate.

[0031] In addition, a plurality of tuning holes may be formed in the filter tuning cover, and the plurality of tuning holes are used to pressurize the plurality of tuning rods using a predetermined tool.

[0032] In addition, a plurality of coupling adjustment rods may be cut and formed in the filter tuning cover, and the plurality of coupling adjustment rods are deformed toward the dielectric filling space side to change the coupling value between adjacent resonators among the plurality of resonators.

[0033] In addition, the plurality of coupling adjustment rods may be arranged to be staggered from the plurality of resonators in a thickness direction of the dielectric-filled space.

[0034] (Effects of the Invention)

[0035] The communication device filter according to one embodiment of the present invention can achieve the following various effects:

[0036] First, the plurality of resonators of the resonant substrate and the plurality of tuning rods of the frequency tuning panel are respectively arranged in different single layers in the dielectric filling space, thereby making it easy to manufacture and design a product with a slimmer appearance.

[0037] Second, the notch forming portion is provided, so that the notch forming portion forms the same single layer with the multiple tuning rods of the frequency tuning panel or the same single layer with the resonator of the resonant substrate, and no additional components for edge characteristics are required, thereby preventing the product weight from increasing and having the effect of facilitating lightweight design. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a perspective view showing a filter for a communication device according to a first embodiment of the present invention;

[0039] Figure 2a and Figure 2b yes Figure 1 Exploded stereogram of

[0040] Figure 3 It is shown Figure 1 An exploded perspective view and a partially enlarged view of a resonator of a resonant substrate and a tuning rod of a frequency tuning panel in a structure of FIG.

[0041] Figure 4 It is shown Figure 1 A partially cutaway perspective view of the interior of a dielectric-filled space in a structure;

[0042] Figure 5 is a perspective view showing a filter for communication equipment according to a second embodiment of the present invention;

[0043] Figure 6a and Figure 6b yes Figure 5 Exploded stereogram of

[0044] Figure 7 is a perspective view showing a filter for communication equipment according to a third embodiment of the present invention;

[0045] Figure 8a and Figure 8b yes Figure 7 Exploded stereogram of

[0046] Fig. 9 It is shown Figure 7 A partially cutaway perspective view of the interior of a dielectric-filled space in a structure;

[0047] Fig.10 is a perspective view showing a filter for communication equipment according to a fourth embodiment of the present invention;

[0048] Fig.11a and Fig.11b yes Fig.10 Exploded three-dimensional diagram.

[0049] (Explanation of Reference Numerals)

[0050] 1, 100, 200, 300: filter 10, 110, 210, 310: filter body 20, 120, 220, 320: filter tuning cover

[0051] 21, 121, 221, 321: Tuning change holes

[0052] 30, 230: Resonant substrate

[0053] 31, 131, 231, 331: resonator 40, 140, 240, 340: frequency tuning panel

[0054] 41, 141, 241, 341: Tuning 50: Interval Panel

[0055] 122, 222, 322: Coupling adjustment lever DETAILED DESCRIPTION

[0056] Hereinafter, a communication device filter according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0057] When assigning reference numerals to components of the various drawings, it should be noted that for identical components, even if they are shown in different drawings, they should have the same reference numerals as much as possible. In addition, when describing the embodiments of the present invention, if it is determined that the specific description of the relevant known structure or function hinders the understanding of the embodiments of the present invention, the specific description will be omitted.

[0058] When describing the components of the embodiments of the present invention, the terms first, second, A, B, (a), (b), etc. may be used. Such terms are only used to distinguish one component from other components, and the nature or order of the components shall not be limited by the terms. In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by ordinary technicians in the field to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as consistent with the meaning in the relevant technical articles and shall not be interpreted in an ideal or overly formal sense unless clearly defined in this application.

[0059] According to the embodiments of the present invention, the filters 1, 100, 200, 300 for communication equipment include a filter body 10, 110, 210, 310 and a filter tuning cover 20, 120, 220, 320. The filter tuning cover 20, 120, 220, 320 is combined with the filter body 10, 110, 210, 310 to form a dielectric filling space 10S, 110S, 210S, 310S between the filter body 10, 110, 210, 310.

[0060] The dielectric filling spaces 10S, 110S, 210S, and 310S are filled with a dielectric having a predetermined dielectric constant. In the embodiments of the present invention, air is also a dielectric material having a predetermined dielectric constant, so the description is based on the premise that air is filled in the dielectric filling spaces 10S, 110S, 210S, and 310S as a dielectric. In this way, when air is used as a dielectric, this may mean that the dielectric filling spaces 10S, 110S, 210S, and 310S are not sealed, and no additional dielectric filling process is required. Air as a dielectric may be naturally filled in the dielectric filling spaces 10S, 110S, 210S, and 310S consisting of empty spaces.

[0061] Hereinafter, the communication device filter according to the present invention will be described in detail according to each embodiment.

[0062] Figure 1 is a perspective view showing a filter for a communication device according to a first embodiment of the present invention; Figure 2a and Figure 2b yes Figure 1 Exploded stereogram of Figure 3 It is shown Figure 1 An exploded perspective view and a partially enlarged view of a resonator of a resonant substrate and a tuning rod of a frequency tuning panel in a structure of FIG. Figure 4 It is shown Figure 1 A partially cutaway perspective view of the interior of a dielectric-filled space in a structure.

[0063] like Figures 1 to 4 As shown, the filter 1 for communication equipment according to the first embodiment of the present invention may include: a filter body 10; a filter tuning cover 20, which is combined to form the dielectric filling space 10S between the filter body 10; a resonant substrate 30, including a plurality of resonators 31, and the plurality of resonators 31 are configured to form a single layer in the thickness direction within the dielectric filling space 10S; a frequency tuning panel 40, including a plurality of tuning rods 41, and the plurality of tuning rods 41 are configured to form a single layer in the thickness direction within the dielectric filling space 10S.

[0064] like Figure 2a and Figure 2b As shown, the filter body 10 may be substantially formed in a thin rectangular hexahedron shape to form a closed dielectric filling space 10S having a thickness t smaller than the dimensions in the length direction l and the width direction w.

[0065] Here, a portion of the dielectric-filled space 10S may form a space on one side of the opening of the filter body 10 , and the remaining portion of the dielectric-filled space 10S may form a space on the other side of the filter tuning cover 20 .

[0066] In order to form the dielectric filling space 10S as described above, the filter body 10 is configured to be recessed to a predetermined depth in a direction of one side of the filter tuning cover 20 toward the other side (downward in the drawing) in combination with the filter tuning cover 20, and can be configured to be recessed to a predetermined depth in the inner side of the filter tuning cover 20 also in the opposite direction (upward in the drawing).

[0067] The interior of the dielectric filling space 10S can be filled with a dielectric having a predetermined dielectric constant. However, as mentioned above, air is also a type of dielectric having a predetermined dielectric constant. Therefore, in the first embodiment of the present invention (the second to fourth embodiments described later are all the same), the description is based on the premise of the dielectric filled with air.

[0068] On the other hand, an input port hole 17h and an output port hole 17h may be formed through the filter body 10 to communicate with the dielectric-filled space 10S. The input port hole 17h and the output port hole 17h fix the input port 5A and the output port 5B for inputting a predetermined signal to one side of the resonant substrate 30 described later.

[0069] Here, the input port 5A and the output port 5B can be electrically connected to the port connection holes 37hA and 37hB of the resonance substrate 30, respectively, so as to maintain impedance matching through the input coaxial connector 5A' and the output coaxial connector 5B'. However, the electrical connection with the resonance substrate 30 is not limited to the method of using the input port 5A and the input coaxial connector 5A' and the output port 5B and the output coaxial connector 5B', but the electrical connection can be achieved by various electrical connection structures such as pins as long as it is a conductive medium configured on a main board not shown.

[0070] The resonant substrate 30 is configured as a single layer in the dielectric-filled space 10S in the thickness direction t, and the plurality of resonators 31 are also formed as a single layer, and may include a resonant frame 30F having a rectangular frame.

[0071] Here, the resonance frame 30F may be formed to have a frame portion that substantially matches the frame ends of the filter body 10 and the filter tuning cover 20 .

[0072] In order to facilitate understanding, the resonance frame 30F is cut into a rectangular shape in the middle and connected in the vertical direction, so as to be approximately Figure 2a and Figure 2b The explanation is based on the premise that it extends from the left side to the right side into a quadrilateral (rectangle), and the left end and the right end in the length direction form relatively shorter sides, so they are called "short sides", and the front end and the rear end in the width direction have relatively longer sides, so they are called "long sides" for explanation.

[0073] Here, if Figure 2a and Figure 2b As shown, the plurality of resonators 31 may be formed by extending a predetermined length from any one of the long sides 30A of the four sides of the resonance frame 30F toward the other long side 30B.

[0074] However, it is preferable that the plurality of resonators 31 are formed so that their front ends are not connected to the inner end of the frame of the other long side 30B described above but are spaced apart from each other.

[0075] In addition, the plurality of resonators 31 may be formed such that the front ends are spaced the same distance from the inner end of the frame of another long side 30B. However, the extension start positions of the plurality of resonators 31 are not necessarily the same, but different extension start positions may be designed according to the frequency bandpass and characteristics required by the designer. That is, the extension start position of each of the plurality of resonators 31 is the inner end of the frame of any one of the long sides 30A mentioned above, and may be configured to extend from the inner end of the frame of the long side 30A to the extension start position of each of the adjacent resonators 31.

[0076] On the other hand, Figure 2a and Figure 2bAs shown, the frequency tuning panel 40 may be configured as a single layer between the resonant substrate 30 and the filter tuning cover 20 .

[0077] In more detail, the frequency tuning panel 40 may include a tuning frame 40F having a rectangular frame, and a plurality of tuning rods 41 extending from the inner side of one long side 40A to the side of the other long side 40B among four sides of the tuning frame 40F.

[0078] Here, the tuning rods 41 may be integrally formed with the tuning frame 40F. Preferably, the tuning rods 41 extend integrally from the inner side of the long side 40A of the tuning frame 40F and extend a predetermined length to form a single layer in the thickness direction t of the dielectric filling space 10S.

[0079] The frequency tuning panel 40 as described above can be configured as a single layer different from the plurality of resonators 31 in the dielectric filling space 10S in the thickness direction t, so as to adjust the spacing distance between the plurality of tuning rods 41 and the plurality of resonators 31 configured in the dielectric filling space 10S (refer to Figure 3 of "T").

[0080] Here, multiple tuning rods 41 can be arranged along the inner frame surface of the long side 40A of the tuning frame 40F at a predetermined distance in the length direction 1, and each tuning rod 41 can be arranged at a distance in the length direction 1 at a position corresponding to a plurality of resonators 31 respectively, and the plurality of resonators 31 are arranged in the dielectric filling space 10S and are spaced apart from the plurality of tuning rods 41 in the thickness direction t.

[0081] On the other hand, unlike the extension starting positions of the above-mentioned multiple resonators 31, the extension starting positions of the multiple tuning rods 41 from the inner side of the long side 40A of one side of the tuning frame 40F can all be set on the same line, which is equivalent to the inner side frame end of the long side 40A of one side of the tuning frame 40F.

[0082] In addition, the front ends of the above-mentioned multiple resonators 31 extend to be spaced the same distance from the inner end of the frame of the other long side 30B of the resonance frame 30F. In contrast, the lengths of the front ends of the multiple tuning rods 41 extending toward the other long side 40B can be the same or different.

[0083] However, in this case, in the structure where multiple tuning rods 41 adjust the spacing distance T between multiple resonators 31 arranged in different single layers in the dielectric filling space 10S to perform frequency fine-tuning, the multiple resonators 31 or the multiple tuning rods 41 are preferably designed to overlap by a predetermined length in the thickness direction t of the dielectric filling space 10S.

[0084] At this time, assuming that the dielectric filled in the dielectric filling space 10S is air, there is an air layer between the multiple resonators 31 of the resonant substrate 30 and the tuning rods 41 of the frequency tuning panel 40. Not only that, there may also be an air layer with the same dielectric constant between the multiple resonators 31 and the inner surface of the filter body 10. According to the shape deformation of each tuning rod 41 of the frequency tuning panel 40, the air layer changes slightly, and the frequency can be fine-tuned.

[0085] On the other hand, Figure 2a and Figure 2b As shown, in the filter 1 for communication equipment according to the first embodiment of the present invention, the frequency tuning panel 40 may also include a notch forming portion 42, and the notch forming portion 42 includes an L-notch portion 42L and a C-notch portion 42C. The L-notch portion 42L protrudes from the inner side of the other long side 40B of the four sides of the tuning frame 40F toward the side of the one long side 40A to form a closed loop, while the C-notch portion 42C extends without forming a closed loop but is connected to the inner side of the one long side 40A.

[0086] Here, the L-notch portion 42L performs the role of an L-notch that strengthens the edge characteristics and forms an inductive coupling at the right end of the passband, and the C-notch portion 42C performs the role of a C-notch that strengthens the edge characteristics and forms a capacitive coupling at the left end of the passband.

[0087] The L-notch portion 42L may be configured to extend from the inner side of the other long side 40B of the frequency tuning panel 40 to form the same single layer as the tuning rod 41 and form a closed loop that does not contact the one long side 40A.

[0088] Meanwhile, the C-notch portion 42C may be configured to extend from the inner side of the other long side 40B of the frequency tuning panel 40 or the L-notch portion 42L to form the same single layer with the tuning rod 41 while being connected to one long side 40A.

[0089] Here, unlike the L-notch portion 42L, the C-notch portion 42C has a difference in that it does not form a closed loop with respect to the other long side 40B in the same single layer.

[0090] The C-notch portion 42C and the L-notch portion 42L respectively form an electric field or a magnetic field between multiple resonators 31 in the same single layer having the same shape and the same corner or bend shape, thereby forming the above-mentioned C-notch or L-notch on the left or right side of the passband.

[0091] on the other hand, Figure 2a and Figure 2bAs shown, in the C-notch portion 42C and the L-notch portion 42L, the C-notch portion 42C can be extended not only from the inner end of the frame of the other long side 40B of the frequency tuning panel 40, but also from a part of the already formed L-notch portion 42L.

[0092] On the other hand, as described above, for the resonator 31 of the resonance substrate 30 and the tuning rod 41 of the frequency tuning panel 40 , the frequency is finely tuned by adjusting the spacing distance in the thickness direction t, which requires a structural design for ensuring a minimum spacing distance.

[0093] To this end, the filter 1 for communication equipment according to the first embodiment of the present invention may further include a spacer panel 50, which is stacked in the dielectric filling space 10S between the resonant substrate 30 and the frequency tuning panel 40 in the thickness direction t to block direct contact between the frequency tuning panel 40 and the resonant substrate 30.

[0094] Here, blocking direct contact between the frequency tuning panel 40 and the resonant substrate 30 by the spacer panel 50 only means that a thickness is formed to avoid physical spatial contact in order to ensure a spacing distance, and does not mean blocking electrical connection.

[0095] The spacer panel 50 may be formed to correspond to the frame shape of the tuning frame 40F of the frequency tuning panel 40 and the resonance frame 30F of the resonance substrate 30 .

[0096] There is an air layer between the resonator 31 of the resonant substrate 30 and the tuning rod 41 of the frequency tuning panel 40, and the spacing panel 50 as described above performs the function of ensuring the above-mentioned spacing distance so that the desired passband frequency can be tuned by finely adjusting the spacing distance T in the air layer.

[0097] However, the spacer panel 50 does not necessarily have to be manufactured separately and stacked between the resonant substrate 30 and the frequency tuning panel 40, but can also be formed as an integral part on the upper part of the frame of the resonant substrate 30 to form different thicknesses, and conversely, can be formed as an integral part on the lower part of the frame of the frequency tuning panel 40 to form different thicknesses, or can be stacked as an integral part on the upper part of the frame of the resonant substrate 30 and the lower part of the frame of the frequency tuning panel 40, and the thickness of each changes by half compared to the thickness of the spacer panel 50, as long as the above-mentioned spacing distance is met.

[0098] That is, the tuning frame 40F of the frequency tuning panel 40 is formed to have a greater thickness than the plurality of tuning rods 41, and the resonance frame 30F of the resonance substrate 30 can be formed to have a greater thickness than the plurality of resonators 31. In this case, the surface of the tuning frame 40F corresponding to the plurality of tuning rods 41 is located at the upper part in the drawing, and the surface of the resonance frame 30F corresponding to the plurality of resonators 31 is located at the lower part in the drawing, and thus the plurality of tuning rods 41 and the plurality of resonators 31 can be additionally secured at the spacing distance spaced by the spacing panel 50 described above.

[0099] At the same time, if Figures 1 to 4 As shown, the dielectric filling space 10S between the filter body 10 and the filter tuning cover 20 is filled with a dielectric defined by air, and the tuning designer inserts a predetermined tuning tool (not shown) into the inner side of the dielectric filling space 10S through the lower part of the filter body 10 or the upper part of the filter tuning cover 20, and then pressurizes the front end of the resonator 31 toward the tuning rod 41 side, that is, changes the shape in the thickness direction t, or pressurizes the front end of the tuning rod 41 toward the resonator 31 side, that is, changes the shape in the thickness direction t, and then performs frequency fine-tuning.

[0100] Here, a plurality of bottom tuning holes 12 for inserting the above-mentioned tuning tools can be formed on the lower surface of the filter body 10, so that the bottom tuning holes 12 are connected to the dielectric filling space 10S, and a plurality of upper tuning holes 22 can be formed on the upper surface of the filter tuning cover 20 for inserting the above-mentioned tuning tools, and the upper tuning holes 22 are connected to the dielectric filling space 10S.

[0101] However, it is not necessary for both the filter body 10 and the filter tuning cover 20 to have the bottom tuning hole 12 and the upper tuning hole 22. Instead, it may be configured so that any one of the two can function as a tuning hole for inserting the original tuning tool, while the remaining one can function as a tuning change hole for changing the purpose after tuning.

[0102] In addition, the filter body 10 may not have the bottom tuning hole 12, but only the filter tuning cover 20 may be provided with the upper tuning hole 22 and the tuning change hole 21. The tuning change hole 21 may be a hole provided for inserting another tuning change tool (not shown) to readjust the deformed tuning rod 41 when the frequency needs to be changed after fine tuning using the tuning tool.

[0103] The filter for communication equipment according to the first embodiment of the present invention, which is composed of the structure as described above, is composed of a filter body 10, a resonant substrate 30, a spacer panel 50, a frequency tuning panel 40 and a filter tuning cover 20 arranged in layers in sequence, and is connected by unillustrated connecting screws, which pass through and are fastened to a plurality of stacked connecting screw holes 15, 35, 55, 45, 25 arranged in each frame portion, thereby forming a closed dielectric filling space 10S.

[0104] Here, the filter body 10, the resonant substrate 30, the spacer panel 50, the frequency tuning panel 40 and the filter tuning cover 20 may all be made of metal materials, or may be made of a predetermined dielectric material and then the exposed portions on the dielectric filling space 10S side are all covered with metal materials. The portion exposed on the dielectric filling space 10S side is covered with a metal material, and the dielectric filling space 10S can be formed into a closed space. The method of stacking and combining the filter body 10 with the remaining structures (resonant substrate 30, spacer panel 50, frequency tuning panel 40 and filter tuning cover 20) is not screw-joining, and various methods including welding joining and adhesive joining can be applied.

[0105] Regarding the communication device filter 1 according to the first embodiment of the present invention configured as described above, reference will be made to Figure 3 and Figure 4 The specific passband frequency filtering process is described as follows.

[0106] First, when a predetermined signal is input to the dielectric-filled space 10S through the input port 5A on one side, the signal is transmitted sequentially in the length direction 1 through the resonator 31 of the resonant substrate 30 connected to the input coaxial connector 5A' of the input port 5A in the dielectric-filled space 10S, and is output through the resonator 31 of the resonant substrate 30 connected to the output coaxial connector 5B' of the output port 5B in the dielectric-filled space 10S.

[0107] At this time, the frequency can be finely adjusted by specifically designing the spacing distance T between each resonator 31 and the tuning rod 41 in the vertical thickness direction t, thereby only outputting a specific bandpass frequency.

[0108] Here, according to the filter 1 for communication equipment of the first embodiment of the present invention, the extension direction of the resonator 31 is set to form a single layer in the thickness direction t in the dielectric filling space 10S, and the extension direction of the tuning rod 41 is also set to form a single layer different from the resonator 31 in the thickness direction t in the dielectric filling space 10S, thereby providing the advantages of thinning the overall thickness and fine-tuning the frequency within the limit of the spacing distance of each single layer that is different from each other in the above-mentioned thickness direction t.

[0109] Hereinafter, the communication device filters 100, 200, and 300 according to the second to fourth embodiments implemented by embodiments different from the communication device filter 1 of the above-described first embodiment will be described in sequence. However, the structures that overlap with the first embodiment 1 are replaced by the already described content, and the description will mainly focus on the different parts of each of the embodiments 100, 200, and 300 from the first embodiment 1.

[0110] Figure 5 is a perspective view showing a communication device filter according to a second embodiment of the present invention;

[0111] Figure 6a and Figure 6b is Figure 5 exploded perspective view of.

[0112] As Figures 5 to 6b shown, in the communication device filter 100 according to the second embodiment of the present invention, a plurality of coupling adjustment rods 122 can be cut and formed on the filter tuning cover 120, and the plurality of coupling adjustment rods 122 are deformed toward the dielectric filling space 110S side to change the coupling value between adjacent resonators among the plurality of resonators 131.

[0113] More specifically, the plurality of coupling adjustment rods 122 can be formed to be offset from the plurality of resonators 131 in the thickness direction t of the dielectric filling space 110S, respectively.

[0114] Here, one side of each of the plurality of coupling adjustment rods 122 is integrally connected to the filter tuning cover 120, and the remaining portions except for the portions integrally connected to the filter tuning cover 120 can be cut into a "匚" shape.

[0115] If a tuning worker (designer) uses a predetermined tool to press the front end of any one of the plurality of coupling adjustment rods 122 toward the dielectric filling space 110S in order to achieve a desired coupling value between adjacent resonators among the plurality of resonators 131, the front end shape of the coupling adjustment rod 122 is deformed and located between the adjacent resonators 131. In addition, according to the design values of the specific shapes of the above-described C-notch portion 142C or L-notch portion 142L, and further according to the deformation of each shape of the coupling adjustment rod 122, the coupling value can be achieved according to the design values desired by the worker.

[0116] Figure 7 is a perspective view showing a communication device filter according to a third embodiment of the present invention; Figure 8a and Figure 8b is Figure 7 exploded perspective view of; Fig. 9 is a partial cutaway perspective view showing Figure 7 the inside of the dielectric filling space in the structure of.

[0117] In reference Figures 1 to 4 In the filter 1 for communication equipment according to the first embodiment of the present invention, the resonator 31 of the resonant substrate 30 and the tuning rod 41 of the frequency tuning panel 40 extend in the same direction (for example, from one long side 30A, 40A to the other long side 30B, 40B side), but it is not necessary to be limited to this.

[0118] That is, Figure 8a and Figure 8b As shown, in the communication device filter 200 according to the third embodiment, when the resonance frame 230F of the resonance substrate 230 has a rectangular horizontal cross-section, a portion 231 of the resonators 231 and 232 of the resonance substrate 230 may be extended by a predetermined length from the one long side 230A to the other long side 230B, and not only that, the remaining portion 232 of the resonators 231 and 232 of the resonance substrate 230 may be extended by a predetermined length from the other long side 230B to the one long side 230A.

[0119] Here, among the plurality of resonators 231 and 232, adjacent resonators 231 and 232 have respective front ends overlapping by a predetermined length in the width direction w of the resonant substrate 230, and can be formed to cross each other in a zigzag direction in the length direction 1 of the resonant substrate 230, rather than overlapping each other in the extending direction.

[0120] In addition, when the tuning frame 240F of the frequency tuning panel 240 has a rectangular horizontal cross-section, a portion 241 of the tuning rods 241, 242 of the frequency tuning panel 240 can be extended by a predetermined length from one long side 240A to the other long side 240B. Moreover, the remaining portion 242 of the tuning rods 241, 242 of the frequency tuning panel 240 can be extended by a predetermined length from the other long side 240B to the one long side 240A.

[0121] At the same time, the tuning rods 241, 242 adjacent to each other among the multiple tuning rods 241, 242 have their respective front ends overlapping by a predetermined length in the width direction w of the frequency tuning panel 240, while being able to cross in a zigzag shape in the length direction 1 of the frequency tuning panel 240, rather than overlapping each other in the extension direction.

[0122] At this time, the resonators 231, 232 of the resonant substrate 230 and a portion of the tuning rods 241, 242 of the frequency tuning panel 240 overlap in the thickness direction t to form a dielectric-filled space 210S that is sufficient to physically divide the resonators 231, 232 and the tuning rods 241, 242 extending in opposite directions, thereby giving the effect of having multiple cavities.

[0123] At the same time, if Figure 8a and Figure 8b As shown, in the communication device filter 200 according to the third embodiment, the notch forming portion 233 may be configured to connect adjacent resonators 231 to each other in the resonator formed by extending from one long side 230A to the other long side 230B of the resonance frame 230F. The notch forming portion 233 here may function as an L-notch portion that forms an inductively coupled L-notch on the right side of the passband to enhance the edge characteristics.

[0124] In contrast, in the first embodiment 1, the notch forming portion 233 is formed in the same single layer as the tuning rod 41 in the frequency tuning panel 40 , but in the third embodiment 200 , the notch forming portion 233 is formed in the resonance substrate 230 , which is different.

[0125] Fig.10 is a perspective view showing a filter for communication equipment according to a fourth embodiment of the present invention; Fig.11a and Fig.11b yes Fig.10 Exploded three-dimensional diagram.

[0126] like Figure 10 to Figure 11b As shown, the filter 300 for communication equipment according to the fourth embodiment of the present invention does not completely partition the dielectric filling space 310S, but may at least include a plurality of space dividing ribs 317W, which partition a portion of the bottom surface of the dielectric filling space 310S formed by the filter body 310.

[0127] A plurality of space dividing ribs 317W are formed by extending from the bottom surface of one long side to the bottom surface of the other long side, so as to divide the inner bottom surface portion extended in the length direction 1 of the filter body 310 into a plurality of surfaces in the length direction, and can be formed into a rib shape protruding at least a predetermined length from the bottom surface of the dielectric filling space 310S toward the filter tuning cover 320.

[0128] As described above, the multiple space dividing ribs 317W occupy a portion of the dielectric filling space 310S while at least dividing the resonators 331 into a cavity shape, and adjust the coupling amount between adjacent resonators 331 according to the size or shape of the occupied space, thereby providing the advantage of being able to tune various passband frequencies.

[0129] At the same time, the filter body 310 can be combined so that the bottom surface is completely welded to the side of the main board not shown. The bottom surface of the filter body 310 is divided in the length direction 1 by the multiple space dividing ribs 317W, which can also disperse and eliminate the thermal stress generated by the difference in thermal expansion coefficient between the main board and the PCB material.

[0130] like Figures 1 to 11b As shown, it has been explained that the filter 1, 100, 200, 300 for communication equipment according to an embodiment of the present invention may include an L-notch portion 42L, 142L, 233, 343L for realizing inductive coupling by utilizing the electric field and magnetic field properties between the respective resonators 31, 131, 231, 331 configured inside the dielectric-filled space 10S, 110S, 210S, 310S and a C-notch portion 42C, 142C, 343C for realizing capacitive coupling.

[0131] Inductive coupling is a type of coupling that utilizes the magnetic field properties around the resonators 31, 131, 231, 331 configured in the dielectric-filled space 10S, 110S, 210S, 310S. It is a coupling that can be naturally formed between adjacent resonators 31, 131, 231, 331 as long as there is no structure that affects the magnetic field properties. In particular, when realizing cross-coupling by skipping the middle resonator among any three resonators 31, 131, 231, 331, having the above-mentioned L-notch portions 42L, 142L, 233, 343L can be more meaningful.

[0132] Here, in the case of the communication device filter 1, 100, 200, 300 according to the embodiments of the present invention, the L-notch portion 42L, 142L, 233, 343L is configured so as not to block the front ends of adjacent resonators 31, 131, 231, 331 in the direction of the signal transmission path, and may have a position closer than the middle resonator of any three resonators 31, 131, 231, 331 (refer to the first embodiment 1, the second embodiment 100 and the fourth embodiment 300), or directly connect the resonators on both sides excluding the middle resonator (refer to the third embodiment 200).

[0133] On the other hand, capacitive coupling is a type of coupling that utilizes the properties of electric field lines around resonators 31, 131, 231, 331 configured in dielectric-filled spaces 10S, 110S, 210S, 310S, and can be achieved by configuring a structure on a signal transmission path equivalent to the electric field of adjacent resonators 31, 131, 231, 331.

[0134] In more detail, the C-notch portion 42C, 142C, 342C implemented by the first embodiment, the second embodiment and the fourth embodiment extends from the other side long side 40B, 140B, 340B of the frequency tuning panel 40, 140, 340 and is connected to the one side long side 40A, 140A, 340A, and intervenes in any three resonators 31, 131, 331 of the dielectric filling space 10S, 110S, 310S. In this case, the starting end and the front end of the C-notch portion 42C, 142C, 342C are designed to be closer to the middle resonator among any three resonators 31, 131, 331.

[0135] However, in the third embodiment 200, the C-notch portion is not specifically marked (no figure mark is marked), but in the case of the third embodiment 200, the resonators 231 and 232 arranged on the resonant substrate 230 extend in opposite directions from one long side 230A and the other long side 230B of the resonant frame 230F, respectively, and the front ends are respectively overlapped with each other on the above-mentioned signal transmission path. If necessary, of course, the formed L-notch portion 233 can be considered to be designed and arranged into an appropriate shape.

[0136] The above is a detailed description of the communication device filter according to the embodiment of the present invention with reference to the accompanying drawings. However, the embodiment of the present invention is not necessarily limited to the above-mentioned embodiment, but practitioners with common knowledge in the technical field to which the present invention belongs can certainly make various modifications and embodiments within the same scope. Therefore, the true scope of the rights of the present invention should be defined by the claims.

[0137] Industrial Applicability

[0138] The present invention provides a filter for communication equipment, including a tuning panel, wherein the tuning panel has a plurality of tuning rods, wherein the plurality of tuning rods are configured as a single layer in a dielectric filling space in a thickness direction, and further, a resonant substrate is configured in a single layer in the dielectric filling space in a thickness direction in a different manner from that of the tuning panel, and frequency tuning can be performed by adjusting the spacing distance between the tuning panel and a plurality of resonators of the resonant substrate. Furthermore, the filter includes a notch forming portion, wherein the notch forming portion and the tuning panel form the same single layer.

Claims

1. A filter for communication equipment, comprising: The frequency tuning panel has a plurality of tuning rods, which are arranged in a single layer in a dielectric filling space in a thickness direction to adjust the spacing distances between the plurality of resonators arranged in the dielectric filling space.

2. The communication device filter according to claim 1, characterized in that: The dielectric-filled space is a closed space having a thickness smaller than the dimensions in the length direction and the width direction.

3. The communication device filter according to claim 1, characterized in that: The frequency tuning panel comprises: a tuning frame having a frame formed into a rectangular shape; and The plurality of tuning rods extend from the inner side of one long side of the four sides of the tuning frame to the side of the other long sides.

4. The communication device filter according to claim 3, characterized in that: The plurality of tuning rods are formed integrally with the tuning frame.

5. The communication device filter according to claim 3, characterized in that: The plurality of tuning rods are arranged at predetermined intervals in the length direction.

6. The communication device filter according to claim 3, characterized in that: The plurality of tuning rods are arranged at intervals in the length direction at positions corresponding to the plurality of resonators respectively, and the plurality of resonators are arranged at intervals in the thickness direction from the plurality of tuning rods in the dielectric-filled space.

7. The communication device filter according to claim 3, characterized in that: The lengths of the plurality of tuning rods extending toward the other long side are different from each other.

8. The communication device filter according to claim 3, characterized in that: The frequency tuning panel further includes a notch forming portion, The notch forming portion may extend from the inner side of the other long side among the four sides of the tuning frame to protrude toward one long side and form a closed loop, or may extend to be connected to the inner side of the one long side without forming the closed loop.

9. The communication device filter according to claim 8, characterized in that: The notch forming portion comprises: an L-notch portion forming the closed loop; and The C-notch portion of the closed loop is not formed.

10. The communication device filter according to claim 9, characterized in that: The L-notch portion realizes cross coupling through magnetic field properties between any three adjacent resonators in the dielectric-filled space.

11. The communication device filter according to claim 9, characterized in that: The C-notch portion realizes cross coupling through electric field properties between any three adjacent resonators in the dielectric-filled space.

12. The communication device filter according to claim 1, characterized in that: Also includes: The resonant substrate is arranged in a single layer in the dielectric filling space in the thickness direction, the plurality of resonators form the single layer, and includes a resonant frame having a rectangular frame.

13. The communication device filter according to claim 12, characterized in that: The multiple resonators are: The resonant frame extends from any one of the four sides of the resonant frame to another of the four sides thereof by a predetermined length, and is arranged to overlap with the plurality of tuning rods by a predetermined length in the thickness direction at least.

14. The communication device filter according to claim 13, characterized in that: The plurality of resonators extend to be spaced apart from the other long side.

15. The communication device filter according to claim 12, characterized in that: Also includes: A spacer panel is stacked in the dielectric-filled space between the frequency tuning panel and the resonant substrate in a thickness direction to block direct contact between the frequency tuning panel and the resonant substrate.

16. The communication device filter according to claim 15, characterized in that: The spacer panel is formed to correspond to the frame shape of the tuning frame of the frequency tuning panel and the resonance frame of the resonance substrate.

17. The communication device filter according to claim 12, characterized in that: The frequency tuning panel includes a tuning frame having a thickness greater than the plurality of tuning rods; The resonant substrate includes a resonant frame having a thickness greater than that of the plurality of resonators.

18. The communication device filter according to claim 12, characterized in that: Also includes: A filter body, which is formed with one side opening in the thickness direction of the dielectric filling space and forms a part of the dielectric filling space, and has a setting space inside to stack the resonant substrate and the frequency tuning panel; and The filter tuning cover covers one side of the opening of the filter body in the thickness direction and forms a remaining portion of the dielectric filling space.

19. The communication device filter according to claim 18, characterized in that: A plurality of space dividing ribs are integrally formed on the inner side surface in the thickness direction of the filter body. The plurality of space dividing ribs divide a portion of the dielectric filling space and are protrudingly formed to partition between the plurality of resonators of the resonance substrate.

20. The communication device filter according to claim 18, characterized in that: A plurality of tuning holes are formed in the filter tuning cover, and the plurality of tuning holes are used to press the plurality of tuning rods using a predetermined tool.

21. The communication device filter according to claim 18, characterized in that: A plurality of coupling adjustment rods are cut and formed in the filter tuning cover. The plurality of coupling adjustment rods are deformed toward the dielectric filling space to change the coupling value between adjacent resonators among the plurality of resonators.

22. The communication device filter according to claim 20, characterized in that: The plurality of coupling adjustment rods are arranged to be staggered with respect to the plurality of resonators in a thickness direction of the dielectric-filled space.

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