Radio frequency device

Abstract

The embodiment of the present application discloses a radio frequency device, which sets a radiation part on the side of a substrate away from a function box, sets a filter part and multiple isolation cavities in the function box at the same time. When the radio frequency assembly and the function box are buckled with each other, the two are also connected in communication by using an electrical connection assembly, which simplifies the assembly of the radio frequency device. Thus, on the one hand, the electromagnetic signals between the radio frequency device and external equipment and between each filter unit are shielded by the multiple sets of isolation cavities corresponding to the multiple radiation units, which improves the communication performance of the radio frequency device. The radio frequency device meets the requirements of multiple frequency band electromagnetic signal transmission and reception. On the other hand, by using the opening end of the radio frequency assembly, when the radio frequency assembly is buckled on the function box, the electronic elements on part of the radio frequency assembly can be accommodated, which reduces the thickness of the radio frequency device. Meanwhile, the multiple heat dissipation plates constituting the isolation cavities can further dissipate heat for the electronic elements.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication technology, and in particular to a radio frequency device. BACKGROUND

[0002] The radio frequency unit is an important component of the base station, and its performance, volume and weight will directly affect the layout of the base station and the operating cost of the operator. At present, 5G technology has been widely applied in the field of communication, and more base stations need to be laid out to meet the communication demand. Especially when the number of channels of the radio frequency unit increases, its volume and cost also increase rapidly. How to reduce the volume and cost of the radio frequency unit and improve the performance of the radio frequency unit has become a problem to be solved. SUMMARY

[0003] Therefore, the embodiments of the present application provide a radio frequency device, which uses an electrical connection assembly to communicatively connect a function box and a radio frequency assembly together, so that the overall structure of the radio frequency device is more compact.

[0004] The radio frequency device of the embodiments of the present application comprises:

[0005] an electrical connection assembly;

[0006] a function box comprising a filtering part and a plurality of heat dissipation plates, the plurality of heat dissipation plates surrounding a plurality of groups of isolation cavities, the isolation cavities being arranged adjacent to the filtering part and provided with open ends, the filtering part comprising a plurality of filter units, the plurality of filter units corresponding to the plurality of groups of isolation cavities; and

[0007] a radio frequency assembly being clamped to one side of the function box and covering each of the open ends, the radio frequency assembly comprising a substrate and a radiation part, the radiation part being arranged on the side of the substrate away from the function box and comprising a plurality of radiation units, the plurality of radiation units being one-to-one coupled to the plurality of filter units through the electrical connection assembly.

[0008] Among them, each group of isolation cavities is used to shield or weaken the electromagnetic signals between each filter unit and the outside of the radio frequency device.

[0009] Further, each filter unit comprises at least one resonant cavity:

[0010] The plurality of heat dissipation plates comprises:

[0011] a bottom plate, the resonant cavities and the isolation cavities being arranged on the same plate surface of the bottom plate, and each group of isolation cavities being located on the same side of the filtering part.

[0012] Further, the plurality of heat dissipation plates further comprises:

[0013] a plurality of first vertical plates comprising first partition plates and first side plates;

[0014] a plurality of second vertical plates, including a second partition plate and two second side plates located on both sides of the second partition plate, one side of each of the second side plates extending to the filter part, and the other side extending to the first side plate through the first partition plate, the plurality of first vertical plates and the plurality of second vertical plates being staggered to form side walls of the isolation cavity.

[0015] Further, a length direction of each of the first vertical plates is perpendicular to a length direction of each of the second vertical plates, and a distance from the first partition plate to the filter part is less than a distance from the first partition plate to the first side plate.

[0016] Further, each of the filter units includes a plurality of resonant cavities, the plurality of resonant cavities including a first resonant cavity and a second resonant cavity, the first resonant cavity and the second resonant cavity being arranged at intervals:

[0017] The electrical connection assembly includes a plurality of groups of electrical connection parts, each group of electrical connection parts including a first electrical connection part and a second electrical connection part.

[0018] The radio frequency assembly further includes a radio frequency signal generation circuit, the radio frequency signal generation circuit being arranged on a side of the substrate facing the functional box.

[0019] Each of the radiating units has a signal feed-in contact, the radio frequency signal generation circuit has a plurality of signal feed-out contacts, the first electrical connection parts of the plurality of groups of electrical connection parts simultaneously correspond to the plurality of signal feed-out contacts and the first resonant cavities of the plurality of filter units one by one, and the second electrical connection parts of the plurality of groups of electrical connection parts simultaneously correspond to the plurality of signal feed-in contacts and the second resonant cavities of the plurality of filter units one by one.

[0020] The substrate and the functional box are in a buckled state, one end of each of the first electrical connection parts abuts against the signal feed-out contact, and the other end is coupled to each of the first resonant cavities, one end of each of the second electrical connection parts abuts against the signal feed-in contact, and the other end is coupled to each of the second resonant cavities, and the radio frequency signal generation circuit is at least partially accommodated in the isolation cavity.

[0021] Further, the functional box is provided with a mounting groove, the mounting groove simultaneously surrounds the filter part and the isolation cavity and is adapted to an edge of the substrate.

[0022] The substrate and the functional box are in a buckled state, and the substrate is sunk into the mounting groove.

[0023] Further, the functional box is provided with a receiving recess, the receiving recess facing the substrate.

[0024] Each of the filter units further comprises a plurality of tuning pegs corresponding to the plurality of resonant cavities, one end of each of the plurality of tuning pegs extending into the resonant cavity and the other end extending out of the resonant cavity and located in the accommodating recess;

[0025] The substrate is in a fastened state with the functional box, the substrate covers the accommodating recess and the tuning pegs have a predetermined distance from the substrate.

[0026] Further, the first resonant cavity and the second resonant cavity are respectively provided with a first connecting through hole on a side wall facing the substrate;

[0027] The electrical connection part comprises:

[0028] An insulating member provided in the first connecting through hole and provided with a passage; and

[0029] A conductive member comprising a connecting body and a contact body, the contact body being provided on a side of the insulating member close to the substrate, one end of the connecting body being connected to the contact body and the other end extending into the resonant cavity through the passage.

[0030] Further, the insulating member comprises a first part and a second part, the first part being provided with the passage and the second part being provided with an accommodating groove facing the substrate and communicating with the passage, the first part being installed in the first connecting through hole and the second part being located on a side of the filter part facing the substrate;

[0031] The contact body is an elastic body, the elastic body being provided in the accommodating groove and in a free state, part of the elastic body being located outside the accommodating groove;

[0032] The substrate is in a fastened state with the functional box, each of the elastic bodies abutting against the signal feed-in contact or the signal feed-out contact and deforming towards the bottom of the accommodating groove, and the top of the accommodating groove abutting against the substrate.

[0033] Further, the contact body comprises:

[0034] A connecting sleeve comprising a connecting boss, the connecting boss being located at an end of the connecting sleeve;

[0035] A connecting core provided inside the connecting sleeve and comprising a plurality of elastic pieces, the plurality of elastic pieces being arranged along a circumferential direction of the connecting sleeve and curved towards a center of the connecting sleeve;

[0036] The connecting body comprises a plug head adapted to the connecting core and a stopper skirt penetrating through the passage;

[0037] The substrate is provided with a second connecting through hole and a connecting pattern arranged on the inner wall of the second connecting through hole, and the connecting pattern is electrically connected with the signal feeding contact or the signal feeding contact;

[0038] The substrate and the functional box are in a buckling state, each connecting boss is arranged in the second connecting through hole and is electrically connected with the connecting pattern, and the plurality of elastic sheets abut against the side of the pin head.

[0039] Further, the substrate comprises an adjacent dielectric layer and a copper layer, and the thickness of the copper layer is 0.114mm to 0.126mm;

[0040] The radiation part is a radiation pattern, which is arranged on the side of the dielectric layer away from the copper layer, and the copper layer serves as a reflection layer of the radiation pattern.

[0041] The radio frequency device of the embodiment of the present application sets the radiation part on the side of the substrate away from the functional box, and sets the filter part and the plurality of isolation cavities in the functional box at the same time. When the radio frequency assembly and the functional box are buckled to each other, the two are also connected in communication by using the electrical connection assembly, which simplifies the assembly of the radio frequency device. Thus, on the one hand, the electromagnetic signals between the radio frequency device and the external equipment and between the filter units are shielded by the plurality of groups of isolation cavities corresponding to the plurality of radiation units, which improves the communication performance of the radio frequency device. The requirements of the radio frequency device for receiving and transmitting a plurality of frequency band electromagnetic signals are met. On the other hand, by using the opening end of the radio frequency assembly, when the radio frequency assembly is buckled on the functional box, part of the electronic elements on the radio frequency assembly can be accommodated, which reduces the thickness of the radio frequency device. At the same time, the plurality of heat dissipation plates constituting the isolation cavities can further dissipate heat for the electronic elements. BRIEF DESCRIPTION OF DRAWINGS

[0042] The above and other objects, features and advantages of the present application will become more apparent from the following description of embodiments of the present application taken in conjunction with the accompanying drawings, in which:

[0043] Figure 1 is a structural schematic diagram of a radio frequency device of the embodiment of the present application;

[0044] Figure 2 is an exploded schematic diagram of the radio frequency device of the embodiment of the present application in some embodiments;

[0045] Figure 3 is a top view schematic diagram of a functional box of the embodiment of the present application;

[0046] Figure 4 is Figure 2 is a sectional view schematic diagram at A-A in FIG. 8;

[0047] Figure 5 is Figure 2A cross-sectional view of the electrical connection part at B-B;

[0048] Figure 6 A structural view of the electrical connection part of the embodiment of the application in some embodiments;

[0049] Figure 7 A cross-sectional view of the electrical connection part of the embodiment of the application in some embodiments;

[0050] Figure 8 An exploded view of the radio frequency device of the embodiment of the application in some embodiments;

[0051] Figure 9 A structural view of the radio frequency assembly of the embodiment of the application in some embodiments;

[0052] Figure 10 An exploded view of the radio frequency device of the embodiment of the application in some embodiments;

[0053] Figure 11 A cross-sectional view of the radio frequency device of the embodiment of the application in some embodiments;

[0054] Figure 12 A cross-sectional view of the electrical connection part of the embodiment of the application;

[0055] Figure 13 An exploded view of the electrical connection part of the embodiment of the application;

[0056] Figure 14 A structural view of the radio frequency assembly of the embodiment of the application in some embodiments;

[0057] BRIEF DESCRIPTION OF THE DRAWINGS

[0058] 1 - electrical connection assembly;

[0059] 11 - first electrical connection part; 12 - second electrical connection part; 13 - electrical connection part; 131 - insulating member; 1311 - passage; 132 - conductive member; 1321 - connecting body; 1322 - contact body; 1323 - pin head; 1324 - retreat-preventing skirt; 133 - first part; 134 - second part; 1341 - accommodating groove; 1342 - connecting sleeve; 1343 - connecting core; 1344 - connecting boss; 1345 - elastic sheet; 1346 - positioning edge; 1347 - opening; 1348 - fixing ring;

[0060] 2 - function box;

[0061] 21-filtering part; 2a-mating part; 22-radiating plate; 221-bottom plate; 222-first vertical plate; 223-second vertical plate; 224-first partition plate; 225-first side plate; 226-second partition plate; 227-second side plate; 23-isolation cavity; 24-open end; 25-filtering unit; 251-first resonant cavity; 252-second resonant cavity; 253-tuning pin; 254-first connecting through hole; 26-resonant cavity; 27-mounting groove; 28-receiving recess;

[0062] 3-radio frequency component;

[0063] 31-substrate; 311-second connecting through hole; 312-connecting pattern; 313-dielectric layer; 314-copper layer; 315-ground pattern; 32-radiating part; 33-radiating unit; 34-radio frequency signal generating circuit; 35-signal feeding contact; 36-signal feeding contact; 37-power amplifier tube; 38-circulator;

[0064] 4-conductive glue. DETAILED DESCRIPTION

[0065] The present application is described in detail below based on examples, but the present application is not limited to only these examples. In the following detailed description of the present application, some specific details are described in detail. The present application can also be fully understood without the description of these details by those skilled in the art. In order to avoid confusion of the essence of the present application, well-known methods, processes, procedures, elements and circuits are not described in detail.

[0066] In addition, those of ordinary skill in the art will understand that the drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale.

[0067] Unless the context clearly requires otherwise, throughout the description, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is to say, in the sense of "including, but not limited to".

[0068] In the description of the present application, it should be understood that the terms "first", "second", and the like are used only for the purpose of description and should not be construed as indicating or implying relative importance. In addition, in the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0069] Unless otherwise defined, the terms "mounting", "connected", "connecting", "fixed", and "fixedly" are to be construed as broad terms, for example, it can be fixed connection, or detachable connection, or integral; it can be direct connection, or indirect connection through an intermediate medium; it can be internal connection of two elements, or interaction relationship of two elements, unless otherwise explicitly defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0070] Figure 1 is a structural schematic diagram of a radio frequency device. The radio frequency device in the figure is in the form of a cuboid. The approximate layout area of the radiation part 32 is shown by the dotted line on the top of the radio frequency device. The radiation part 32 is also the antenna of the radio frequency device, and when the guided electromagnetic wave is conducted to the radiation part 32, the electromagnetic signal can be radiated through the radiation part 32. The radio frequency device can be used in a base station, for example, the radio frequency device is a radio frequency remote unit (RRU), and the radio frequency remote unit (RRU) is connected in communication with an indoor baseband processing unit (BBU) through an optical fiber line.

[0071] Figure 2 is an exploded schematic diagram of the radio frequency device in some embodiments. Figure 3 is a top view schematic diagram of the functional box 2.

[0072] Figure 4 is Figure 2 is a sectional view schematic diagram at A-A in FIG. 4. The left side of the two figures is the filter part 21, and the right side is a plurality of isolation cavities 23 corresponding to the filter part 21. The layout area of the radiation part 32 shown in the figure is provided with 10 vibrator units.

[0073] Figure 5 is Figure 2 is a sectional view schematic diagram at B-B in FIG. 4. The arrows in the figure show the conduction direction of the guided electromagnetic wave in the radio frequency signal generating circuit 34, the electrical connection assembly 1 and the radiation unit 33. In the enlarged view, the waveguide in the above-mentioned devices is also shown by a thick solid line. The waveguide is also the medium for conducting the guided electromagnetic wave.

[0074] In some embodiments, as Figures 1-5As shown, the radio frequency device comprises an electrical connection assembly 1, a functional box 2 and a radio frequency assembly 3. The functional box 2 comprises a filter part 21 and a plurality of heat dissipation plates 22, the plurality of heat dissipation plates 22 surround to form a plurality of groups of isolation cavities 23, the isolation cavities 23 are arranged adjacent to the filter part 21 and are provided with an open end 24, the filter part 21 comprises a plurality of filter units 25, the plurality of filter units 25 correspond to the plurality of groups of isolation cavities 23. The radio frequency assembly 3 is buckled with one side of the functional box 2 and is covered on each open end 24, the radio frequency assembly 3 comprises a substrate 31 and a radiation part 32, the radiation part 32 is arranged on the side of the substrate 31 away from the functional box 2 and comprises a plurality of radiation units 33, the plurality of radiation units 33 are one-to-one coupled with the plurality of filter units 25 through the electrical connection assembly 1. Among them, each group of isolation cavities 23 is used to shield or weaken the electromagnetic signals between each filter unit 25 and the outside of the radio frequency device.

[0075] Preferably, the radiation part 32 of the embodiment is a radiation pattern arranged on the top of the substrate 31, which can be formed on the top of the substrate 31 by a laser direct forming process. Thus, it is convenient for the radio frequency device to transceive electromagnetic signals to the outside, and at the same time, the structure of the radio frequency assembly 3 can be more compact.

[0076] Optionally, an antenna cover is arranged on the top of the radio frequency assembly 3, that is, the side away from the functional box 2, and the antenna cover can be configured to adapt to the width and length of the functional box 2. Thus, after the radio frequency assembly 3, the functional box 2 and the antenna cover are assembled together, the structure of the entire radio frequency device is more regular, so as to protect the radio frequency assembly 3 from damage such as bumping or rusting.

[0077] It is easy to understand that the radio frequency device of the embodiment is provided with a plurality of groups of filter units 25 which are independent of each other in order to adapt to the transceiving requirements of a plurality of frequency band electromagnetic signals. Figure 2 and Figure 3 A specific form of the functional box 2 is shown in the figure. In the figure, the filter part 21 is located on the left side of the fitting part 2a. In the figure, the filter part 21 has a total of 4 filter units 25, and the 4 filter units 25 are arranged in parallel. On the contrary, the fitting part 2a is also provided with 4 groups of isolation cavities 23, and each group of isolation cavities 23 corresponds to each filter unit 25. The fitting part 2a can be used for heat dissipation of the radio frequency assembly 3 and improvement of the anti-interference ability of the radio frequency device.

[0078] In other words, the fitting part 2a can be equivalent to a combination of an EMC and a heat sink. The EMC (ElectroMagnetic Compatibility) refers to the ability of a device or system to function in its electromagnetic environment without affecting the performance of other devices or systems. For example, the shell of the fitting part 2a is grounded, so that the crosstalk signal is conducted to the outside of the radio frequency device through the ground wire. The radio frequency assembly 3 can include power amplifiers and frequency converters, etc. In the embodiment, when the radio frequency assembly 3 is buckled with the functional box 2, the inner wall of the isolation chamber 23 is exposed to the radio frequency assembly 3 through the open end 24, thereby increasing the heat exchange area. Thus, the heat generated by the above-mentioned devices can be transmitted to the outside of the radio frequency device through the heat dissipation part (i.e. the plurality of heat dissipation plates 22) of the embodiment, so as to reduce the temperature of the radio frequency assembly 3. For example, the heat dissipation plate 22 can be a galvanized steel plate, a permalloy plate or a silicon steel plate.

[0079] In summary, the radio frequency device of the embodiment sets the radiation part 32 on the side of the substrate 31 away from the functional box 2, sets the filter part 21 and the plurality of isolation chambers 23 in the functional box 2 at the same time, and uses the electrical connection assembly 1 to communicate and connect the radio frequency assembly 3 and the functional box 2 when they are buckled with each other, thereby simplifying the assembly of the radio frequency device. Thus, on the one hand, the electromagnetic signals between the radio frequency device and external devices and between the filter units 25 are shielded and weakened through the plurality of groups of isolation chambers 23 corresponding to the plurality of radiation units 33, thereby improving the communication performance of the radio frequency device. The requirements of the radio frequency device for receiving and transmitting a plurality of frequency band electromagnetic signals are met. On the other hand, the open end 24 towards the radio frequency assembly 3 can accommodate some electronic elements on the radio frequency assembly 3 when the radio frequency assembly 3 is buckled on the functional box 2, thereby reducing the volume of the radio frequency device. At the same time, the plurality of heat dissipation plates 22 constituting the isolation chamber 23 can further dissipate heat for the electronic elements.

[0080] In some embodiments, as shown in Figures 1-5 each filter unit 25 includes at least one resonant cavity 26. The plurality of heat dissipation plates 22 includes a bottom plate 221, the resonant cavity 26 and the isolation chamber 23 are arranged on the same plate surface of the bottom plate 221, and each group of isolation chambers 23 is located on the same side of the filter part 21. That is, the bottom plate 221 of the embodiment is used to form the bottom shell of the resonant cavity 26 and the bottom shell of the isolation chamber 23 at the same time.

[0081] In order to meet the requirements of the radio frequency device to transmit and receive electromagnetic signals of different frequency bands, and to avoid electromagnetic signal interference between the radio frequency device and external devices and the filter units 25, the embodiment simultaneously provides a plurality of cavity structures on the bottom plate 221 of the functional box 2 to form the resonant cavities 26 and the isolation cavities 23, respectively. Therefore, the above structure can be directly manufactured by an integrated molding process. For example, the skilled person in the art can manufacture the filter part 21 and the isolation cavities 23 by die casting, thereby simplifying the processing technology of the functional box 2. Die casting, also known as pressure casting, is a casting method in which a molten alloy is poured into a pressure chamber and solidified under pressure to form a casting. At the same time, the material of the functional box 2 can be aluminum alloy or pomegranate alloy, etc. Such materials can not only conduct electromagnetic waves, but also conduct heat.

[0082] In some embodiments, as shown in Figures 1-5 The plurality of heat dissipation plates 22 further include a plurality of first vertical plates 222 and a plurality of second vertical plates 223. The plurality of first vertical plates 222 include a first partition plate 224 and a first side plate 225. The plurality of second vertical plates 223 include a second partition plate 226 and two second side plates 227 located on both sides of the second partition plate 226, one side of each second side plate 227 extends to the filter part 21, and the other side extends to the first side plate 225 through the first partition plate 224. The plurality of first vertical plates 222 and the plurality of second vertical plates 223 are staggered to form the side walls of the isolation cavities 23. The embodiment also utilizes the side wall of the filter part 21 near the mating part 2a as the side wall of the adjacent isolation cavities 23 and resonant cavities 26.

[0083] Figure 3 A functional box 2 with 4 second vertical plates 223 and 2 first vertical plates 222 is shown in Through the 4 second vertical plates 223, 2 first vertical plates 222, and the side wall of the filter part 21, 8 isolation cavities 23 are formed. Among them, the 8 isolation cavities 23 are formed into two groups, a total of 4 groups, for respectively isolating the guided electromagnetic waves of the 4 groups of filter units 25.

[0084] It should be understood that the embodiment includes a plurality of filter units 25, and each filter unit 25 further includes a plurality of resonant cavities 26. Figure 4 The upper and lower end faces of each resonant cavity 26 can be equivalent to the two poles of a capacitor. When the guided electromagnetic waves oscillate in each resonant cavity 26, the guided electromagnetic waves reaching the filter resonant frequency can be retained, while the guided electromagnetic waves of other frequencies are dissipated, thereby achieving the filtering function.

[0085] On the contrary, as shown in Figure 3As shown, the matching portion 2a adjacent to the filter portion 21 in the embodiment further comprises a plurality of second vertical plates 223. When the guided electromagnetic waves in each stage resonant cavity 26 in each filter unit 25 are coupled in turn, the two second vertical plates 223 located on both sides of each resonant cavity 26 can be equivalent to two plates of a capacitor. On the other hand, the two first vertical plates 222 between the two adjacent second vertical plates 223 can be equivalent to an inductor to transmit the guided electromagnetic waves between the two plates.

[0086] Thus, by the two second vertical plates 223 and the first vertical plate 222 staggered corresponding to each filter unit 25, the electromagnetic signals in each filter unit 25 are constrained therein, thereby suppressing the interference between each filter unit 25, or avoiding even the electromagnetic signals from transmitting to the outside of the radio frequency device.

[0087] In some embodiments, as shown in Figures 1-4 As shown, the length direction of each first vertical plate 222 is perpendicular to the length direction of each second vertical plate 223, and the distance from the first partition plate 224 to the filter portion 21 is less than the distance from the first partition plate 224 to the first side plate 225. The isolation cavity 23 formed by the first vertical plate 222 and the second partition plate 226 in the embodiment is a cuboid structure. This structure can facilitate the accommodation of the radio frequency signal generating circuit 34 on the radio frequency assembly 3. At the same time, the volume of the isolation cavity 23 close to the filter portion 21 is smaller than the volume of the isolation cavity 23 away from the filter portion 21, so as to facilitate the accommodation of larger volume components.

[0088] Figure 14 is a specific structure schematic diagram of a radio frequency assembly. Further referring to Figure 14 As shown, the side of the substrate 31 facing the function box 2 is shown in the figure. Each first electrical connection portion 11 in the radio frequency assembly in the figure corresponds to two power amplifier tubes 37 and an isolator 38 respectively. The isolator 38 is a device that allows one-way transmission of electromagnetic signals. Thus, each isolator 38 in the embodiment can be arranged in the isolation cavity 23 close to the filter portion 21, and the two power amplifier tubes 37 can be arranged in the isolation cavity 23 away from the filter portion 21 at the same time.

[0089] In some embodiments, as shown in Figures 1-4 As shown, each filter unit 25 comprises a plurality of resonant cavities 26, and the plurality of resonant cavities 26 comprises a first resonant cavity 251 and a second resonant cavity 252, and the first resonant cavity 251 and the second resonant cavity 252 are arranged in an interval. Figure 5Three third resonant cavities are also provided between the first resonant cavity 251 and the second resonant cavity 252. Correspondingly, the electrical connection assembly 1 includes multiple sets of electrical connection portions 13, each set including a first electrical connection portion 11 and a second electrical connection portion 12. The radio frequency assembly 3 also includes a radio frequency signal generation circuit 34, which is disposed on the side of the substrate 31 facing the functional box 2. Each radiating unit 33 has a signal feed contact 35, and the radio frequency signal generation circuit 34 has multiple signal output contacts 36. The first electrical connection portions 11 of the multiple sets of electrical connection portions 13 correspond one-to-one with the multiple signal output contacts 36 and the first resonant cavity 251 of the multiple filtering units 25, and the second electrical connection portions 12 of the multiple sets of electrical connection portions 13 correspond one-to-one with the multiple signal feed contacts 35 and the second resonant cavity 252 of the multiple filtering units 25.

[0090] Meanwhile, when the substrate 31 and the functional box 2 are in a snap-fit ​​state, one end of each first electrical connection part 11 abuts against the signal feedout contact 36, and the other end is coupled to each first resonant cavity 251. One end of each second electrical connection part 12 abuts against the signal feedin contact 35, and the other end is coupled to each second resonant cavity 252. The radio frequency signal generation circuit 34 is at least partially housed in the isolation cavity 23.

[0091] Specifically, Figure 1 The enlarged view shows a specific form of an electrical connection 13, with a contact body 1322 at the top and a connector body 1321 connected to the contact body 1322 at the bottom. The contact body 1322 is used to abut against the radio frequency component 3, and the bottom of the connector body 1321 extends into the resonant cavity 26.

[0092] like Figure 5 As shown in the figure, six arrows, a1, a2, a3, a4, a5, and a6, are displayed. These six arrows indicate the direction of electromagnetic wave propagation within a set of filter units 25 after the RF component 3 is engaged with the functional box 2. The enlarged view on the right side of the figure shows the signal feed contact 357, contact body 1322, and connector 1321, respectively, indicated by thick solid lines. a1 and a2 indicate the direction of electromagnetic wave propagation from the RF signal generation circuit 34 to contact body 1322, and then through connector 1321 to the second resonant cavity 252. a3 and a4 indicate the direction of electromagnetic signal propagation when the three third resonant cavities are coupled sequentially. The enlarged view on the left side shows arrows a5 and a6 indicating the direction of electromagnetic signal propagation from the first resonant cavity 251 to connector 1321, and from contact body 1322 to signal feed contact 36, and then from signal feed contact 36 to radiation unit 33.

[0093] Thus, on the one hand, through the electromagnetic signal of the function box 2, it is ensured that the electromagnetic signal is in a specified frequency band, and the radio frequency device is not affected by the crosstalk signal. On the other hand, the structure of the radio frequency device is more compact, and the installation process is simplified. On the other hand, the radio frequency device also has a certain heat dissipation capacity, and does not need to be separately provided with a heat dissipation fin.

[0094] In some embodiments, as shown in Figures 1-5 , the function box 2 is provided with a mounting groove 27, which surrounds the filter part 21 and the isolation cavity 23 and is adapted to the edge of the substrate 31. The substrate 31 is in a buckling state with the function box 2, and the substrate 31 is sunk into the mounting groove 27. Through the mounting groove 27 of the present embodiment, after the substrate 31 is buckled with the function box 2, the overall radio frequency device presents a cuboid structure, and the surface is relatively flat.

[0095] In some embodiments, as shown in Figures 1-5 , the function box 2 is provided with a containing recess 28, which faces the substrate 31. Each filter unit 25 further comprises a plurality of tuning pins 253 corresponding to the plurality of resonant cavities 26, one end of the plurality of tuning pins 253 extends into the resonant cavity 26, and the other end extends towards the substrate 31 and is located in the containing recess 28. In this state, the substrate 31 is in a buckling state with the function box 2, and the substrate 31 covers the containing recess 28 and the tuning pins 253 have a predetermined distance (as shown in the enlarged view of region I in Figure 5 ) from the substrate 31.

[0096] Specifically, the tuning pin 253 is connected with the shell of the resonator through a thread. By controlling the screwing depth of the tuning pin 253, the resonant frequency of each resonator can be further changed. In order to ensure the stability of the connection between the tuning pin 253 and the resonator shell, a fixing glue can be applied to the exposed position of the tuning pin 253. Under this premise, the tuning pin 253 is arranged in the containing recess 28, and when the substrate 31 is covered on the function box 2, a containing area is formed with the containing recess 28, which can ensure that the head of the tuning pin 253 will not be bumped, and also can ensure that the fixing glue will not easily fall off. The interference between the tuning pin 253 and the substrate 31 is avoided.

[0097] Figures 6-13 Different forms of the structure of the electrical connection part 13 are shown, as well as the connection relationship between the electrical connection part 13 and the radio frequency assembly 3 and the function box 2. Among them Figure 9 is Figure 8 the perspective view shown in D in

[0098] In some embodiments, as shown in Figures 1-13As shown, the first resonant cavity 251 and the second resonant cavity 252 have first connecting through holes 254 respectively on one side wall facing the substrate 31. The electrical connection portion 13 includes an insulating member 131 and a conductive member 132. The insulating member 131 is disposed in the first connecting through hole 254 and has a channel 1311. Meanwhile, the conductive member 132 includes a connector 1321 and a contact 1322. The contact 1322 is disposed on the side of the insulating member 131 near the substrate 31. One end of the connector 1321 is connected to the contact 1322, and the other end extends into the resonant cavity 26 through the channel 1311.

[0099] In this embodiment, the conductive element 132 is used to feed in and out guided electromagnetic waves. At the same time, the insulating element 131 is used to prevent short circuit between the conductive element 132 and the housing of the filter section 21, thereby reducing electromagnetic signal leakage.

[0100] Further, the insulating member 131 includes a first portion 133 and a second portion 134. The first portion 133 has a channel 1311, and the second portion 134 has a receiving groove 1341 that opens toward the substrate 31 and communicates with the channel 1311. The first portion 133 is installed in the first connecting through hole 254, and the second portion 134 is located on the side of the filter section 21 facing the substrate 31. The contact body 1322 is an elastic body, which is disposed in the receiving groove 1341 and, in a free state, partially located outside the receiving groove 1341. The substrate 31 and the functional box 2 are in a snap-fit ​​state, and each elastic body abuts against the signal feed contact 35 or the signal feed contact 36 and deforms toward the bottom of the receiving groove 1341, while the top of the receiving groove 1341 abuts against the substrate 31.

[0101] In this embodiment, the elastic body has a deformation amount towards the bottom of the receiving groove 1341, which enables the RF component 3 to abut against the functional box 2. This simplifies the assembly process of the RF device. At the same time, the receiving groove 1341 can be fastened around the connecting contact point when the elastic body abuts against it, and the insulating member 131 can also prevent the conductive member 132 from short-circuiting with the functional box 2.

[0102] In other implementations, such as Figures 8-9 As shown, the conductive component 132 also includes a spring (not shown in the figure), the contact body 1322 is a push rod, and the connecting body 1321 is a spring seat (not shown in the figure). The push rod is telescopically mounted in the spring seat by the spring. The spring seat is fixed to the filter section 21 by the insulating component 131. When the RF component 3 is engaged with the functional box 2, the signal feed contact 35 and the signal output contact 36 will abut against the push rod.

[0103] Preferably, conductive adhesive 4 is applied to the top of the filter section 21 adjacent to the electrical connection section 13. Conductive adhesive is an adhesive that has a certain degree of conductivity after curing or drying. It can connect various conductive materials together, forming an electrical path between the connected materials. Conversely, a grounding pattern 315 is provided near the signal input contact 35 and the signal output contact 36. This grounding pattern 315 is a C-shaped structure surrounding the signal input contact 35 or the signal output contact 36. When the RF component 3 is fastened to the functional box 2, the RF component 3 is grounded through the connection between the conductive adhesive 4 and the grounding pattern 315. This prevents electromagnetic signal leakage to the outside and reduces signal interference.

[0104] In some implementations, such as Figures 10-13 As shown, the contact body 1322 includes a connecting sleeve 1342 and a connecting core 1343. The connecting sleeve 1342 includes a connecting boss 1344, which is located at the end of the connecting sleeve 1342. The connecting core 1343 is disposed inside the connecting sleeve 1342 and includes multiple spring tabs 1345, which are arranged circumferentially along the connecting sleeve 1342 and bent toward the center of the connecting sleeve 1342. The connecting body 1321 includes a pin head 1323 adapted to the connecting core 1343 and a retaining skirt 1324 passing through the channel 1311. The substrate 31 is provided with a second connecting through hole 311 and a connecting pattern 312 (e.g., ...) arranged on the inner wall of the second connecting through hole 311. Figure 5 (As shown in the enlarged view at the lower left), the connection pattern 312 is electrically connected to the signal input contact 35 or the signal output contact 36. In this configuration, when the substrate 31 and the functional box 2 are in a snap-fit ​​state, each connection boss 1344 passes through the second connection through hole 311 and is electrically connected to the connection pattern 312, and multiple spring contacts 1345 abut against the side of the pin head 1323. The connection pattern 312 can be formed on the inner wall of the second connection through hole 311 by laser direct forming process to achieve electrical connection with the signal input contact 35 or the signal output contact 36.

[0105] Preferably, an external thread is provided on the outer periphery of the insulating member 131, and an internal thread corresponding to the external thread is provided inside the first connecting through hole 254 to achieve a threaded connection between the insulating member 131 and the housing of the filter section 21. Conversely, in this embodiment, before the RF component 3 is fastened to the functional box 2, the connecting core 1343 can be pre-inserted into the connecting sleeve 1342, and the connecting sleeve 1342 can be pre-connected to the second connecting through hole 311 of the substrate 31 (e.g., ...). Figure 11 (The state shown in the middle connecting sleeve 1342 and the second connecting through hole 311). When the RF component 3 and the functional box 2 are engaged, the pin 1323 can be directly inserted into the connecting core 1343 to realize the electrical connection between the RF component 3 and the functional box 2.

[0106] Specifically, a positioning edge 1346 is provided on the connecting sleeve 1342 near the connecting boss 1344 and protrudes circumferentially toward the connecting boss 1344. When the connecting boss 1344 is fixedly connected to the second connecting through hole 311, the positioning edge 1346 can abut against the surface of the substrate 31 to limit the insertion depth of the connecting boss 1344.

[0107] Optionally, such as Figure 13 As shown, an opening 1347 is provided at the end of the connecting sleeve 1342 away from the connecting boss 1344, and a hook is also provided inside the opening 1347. The connecting core 1343 also includes two retaining rings 1348, and the two ends of the plurality of spring pieces 1345 are respectively connected to the two retaining rings 1348. At the same time, a notch is provided at the same position of the two retaining rings 1348. This notch allows the connecting core 1343 to retract towards the center, so that the connecting core 1343 can be installed inside the connecting sleeve 1342 through the opening 1347. The hook also prevents the connecting core 1343 from easily coming out of the connecting sleeve 1342.

[0108] In some implementations, such as Figure 5 As shown in the enlarged view, the substrate 31 includes an adjacent dielectric layer 313 and a copper layer 314, the copper layer 314 having a thickness of 0.114 mm to 0.126 mm. The radiating portion 32 is a radiating pattern, which is disposed on the side of the dielectric layer 313 opposite to the copper layer 314, while the copper layer 314 serves as a reflective layer for the radiating pattern.

[0109] As is easily understood, the skin effect, also known as the skin tendency effect, occurs when alternating current passes through a conductor, causing the current to concentrate on the surface of the conductor rather than being evenly distributed across its entire cross-sectional area. Based on the operating frequency of the RF device and the conductivity of the conductive medium in this embodiment, the skin depth is calculated to be only 0.0066 mm. Therefore, by setting the thickness of the copper layer 314 adjacent to the radiation pattern to 0.114 mm to 0.126 mm, it serves as the reflective layer of the RF component 3 (i.e., the reflector of the radiating section 32). This ensures that the electromagnetic signals radiated by the radiating section 32 can be transmitted and received in a predetermined direction, improving the directivity of the electromagnetic signals.

[0110] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can be modified and varied in various ways. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of protection of the present invention.

Claims

1. A radio frequency device, characterized in that, The radio frequency device includes: Electrical connection assembly (1); The functional box (2) includes a filter section (21) and multiple heat sinks (22). The multiple heat sinks (22) surround and form multiple sets of isolation cavities (23). Each isolation cavity (23) is adjacent to the filter section (21) and has an opening (24). The filter section (21) includes multiple filter units (25), each filter unit (25) corresponding to one of the multiple sets of isolation cavities (23). The radio frequency component (3) is fastened and sealed to one side of the functional box (2) at each of the opening ends (24). The radio frequency component (3) includes a substrate (31) and a radiating part (32). The radiating part (32) is disposed on the side of the substrate (31) away from the functional box (2) and includes multiple radiating units (33). The multiple radiating units (33) are coupled one-to-one with the multiple filtering units (25) through the electrical connection component (1). The isolation cavities (23) in each group are used to shield or weaken electromagnetic signals between the filter units (25) and between the radio frequency devices and the outside.

2. The radio frequency device according to claim 1, characterized in that, Each of the filter units (25) includes at least one resonant cavity (26): The plurality of heat sinks (22) include: The base plate (221), the resonant cavity (26) and the isolation cavity (23) are disposed on the same surface of the base plate (221), and each group of the isolation cavities (23) is located on the same side of the filter section (21).

3. The radio frequency device according to claim 2, characterized in that, The plurality of heat sinks (22) also include: Multiple first upright plates (222), including a first partition (224) and a first side plate (225); Multiple second upright plates (223) include a second partition plate (226) and two second side plates (227) located on both sides of the second partition plate (226). One side of each second side plate (227) extends to the filter section (21), and the other side extends through the first partition plate (224) to the first side plate (225). Multiple first upright plates (222) and multiple second upright plates (223) are staggered to form the sidewall of the isolation cavity (23).

4. The radio frequency device according to claim 3, characterized in that, The length direction of each of the first upright plates (222) is perpendicular to the length direction of each of the second upright plates (223), and the distance from the first partition plate (224) to the filter section (21) is less than the distance from the first partition plate (224) to the first side plate (225).

5. The radio frequency device according to claim 1, characterized in that, Each of the filter units (25) includes a plurality of resonant cavities (26), and the plurality of resonant cavities (26) include a first resonant cavity (251) and a second resonant cavity (252), wherein the first resonant cavity (251) and the second resonant cavity (252) are arranged at intervals. The electrical connection assembly (1) includes multiple sets of electrical connection parts (13), each set of electrical connection parts (13) including a first electrical connection part (11) and a second electrical connection part (12); The radio frequency component (3) further includes a radio frequency signal generating circuit (34), which is disposed on the side of the substrate (31) facing the functional box (2); Each of the radiation units (33) has a signal feed contact (35), the radio frequency signal generating circuit (34) has a plurality of signal output contacts (36), the first electrical connection (11) of the plurality of electrical connection parts (13) corresponds one-to-one with the plurality of signal output contacts (36) and the first resonant cavity (251) of the plurality of filter units (25), and the second electrical connection (12) of the plurality of electrical connection parts (13) corresponds one-to-one with the plurality of signal feed contacts (35) and the second resonant cavity (252) of the plurality of filter units (25); The substrate (31) and the functional box (2) are in a snap-fit ​​state. One end of each of the first electrical connection parts (11) abuts against the signal feed contact (36) and the other end is coupled to each of the first resonant cavities (251). One end of each of the second electrical connection parts (12) abuts against the signal feed contact (35) and the other end is coupled to each of the second resonant cavities (252). The radio frequency signal generating circuit (34) is at least partially housed in the isolation cavity (23).

6. The radio frequency device according to claim 5, characterized in that, The functional box (2) has a mounting groove (27) that surrounds both the filter section (21) and the isolation cavity (23) and is adapted to the edge of the substrate (31). The substrate (31) and the functional box (2) are in a snap-fit ​​state, and the substrate (31) is recessed into the mounting groove (27).

7. The radio frequency device according to claim 5, characterized in that, The functional box (2) has a receiving recess (28) facing the substrate (31); Each of the filter units (25) further includes a plurality of tuning pins (253) corresponding one-to-one with the plurality of resonant cavities (26). One end of each of the plurality of tuning pins (253) extends into the resonant cavity (26), and the other end extends toward the substrate (31) and is located in the receiving recess (28). The substrate (31) and the functional box (2) are in a snap-fit ​​state, the substrate (31) covers the receiving recess (28) and the tuning pin (253) is at a predetermined distance from the substrate (31).

8. The radio frequency device according to claim 5, characterized in that, The first resonant cavity (251) and the second resonant cavity (252) have first connecting through holes (254) respectively on one side wall facing the substrate (31); The electrical connection portion (13) includes: An insulating element (131) is disposed in the first connecting through hole (254) and has a channel (1311); and The conductive element (132) includes a connector (1321) and a contact (1322). The contact (1322) is disposed on the side of the insulating element (131) near the substrate (31). One end of the connector (1321) is connected to the contact (1322), and the other end extends into the resonant cavity (26) through the channel (1311).

9. The radio frequency device according to claim 8, characterized in that, The insulating member (131) includes a first part (133) and a second part (134). The first part (133) has the channel (1311), and the second part (134) has a receiving groove (1341) that is opened toward the substrate (31) and communicates with the channel (1311). The first part (133) is installed in the first connecting through hole (254), and the second part (134) is located on the side of the filter part (21) facing the substrate (31). The contact body (1322) is an elastic body, which is disposed in the receiving groove (1341) and, in a free state, is partially located outside the receiving groove (1341); The substrate (31) and the functional box (2) are in a snap-fit ​​state, each of the elastic bodies abuts against the signal feed contact (35) or the signal feed contact (36) and deforms towards the bottom of the receiving groove (1341), and the top of the receiving groove (1341) abuts against the substrate (31).

10. The radio frequency device according to claim 8, characterized in that, The contact body (1322) includes: The connecting sleeve (1342) includes a connecting boss (1344) located at the end of the connecting sleeve (1342); A connecting core (1343) is disposed inside the connecting sleeve (1342) and includes a plurality of spring pieces (1345), wherein the plurality of spring pieces (1345) are arranged circumferentially along the connecting sleeve (1342) and bent toward the center of the connecting sleeve (1342); The connector (1321) includes a pin (1323) adapted to the connector core (1343) and a backstop skirt (1324) passing through the channel (1311); The substrate (31) is provided with a second connection through hole (311) and a connection pattern (312) arranged on the inner wall of the second connection through hole (311). The connection pattern (312) is electrically connected to the signal feed in contact (35) or the signal feed out contact (36). The substrate (31) and the functional box (2) are in a snap-fit ​​state, each of the connecting bosses (1344) passes through the second connecting through hole (311) and is electrically connected to the connecting pattern (312), and the multiple spring pieces (1345) abut against the side of the pin head (1323).

11. The radio frequency device according to claim 1, characterized in that, The substrate (31) includes an adjacent dielectric layer (313) and a copper layer (314), the copper layer (314) having a thickness of 0.114 mm to 0.126 mm; The radiating part (32) is a radiating pattern, which is arranged on the side of the dielectric layer (313) away from the copper layer (314), while the copper layer (314) serves as a reflective layer for the radiating pattern.

Images