Double ended floating radio frequency connector

Abstract

The present disclosure provides a double-ended floating radio frequency connector, comprising a first outer conductor, a second outer conductor, a first ring-shaped hair button, a second ring-shaped hair button, a dielectric body, a center contact, a first columnar hair button and a second columnar hair button; the first ring-shaped hair button is located in the first mounting hole and connected with the first outer conductor, and the first ring-shaped hair button protrudes from the first side of the first outer conductor; the outer peripheral wall of the second ring-shaped hair button is in contact with the first outer conductor; the dielectric body is located in the via hole, the outer peripheral wall of the dielectric body protrudes with a plurality of anti-rotation protrusions, the plurality of anti-rotation protrusions extend one by one into a plurality of anti-rotation openings, and the center of the dielectric body is formed with a clamping hole; the cumulative tolerance caused by the axial and radial directions during the use of the product is compensated in an elastic contact manner, so that the other end of the double-ended floating radio frequency connector can be better compensated in the axial and radial directions, thereby realizing reliable signal transmission and reliable ring-shaped ground, and ensuring that the transmission frequency meets the requirement of 110GHz through impedance continuity control.

Description

Technical Field

[0001] This disclosure relates to the technical field of radio frequency connectors, and in particular to a dual-ended floating radio frequency connector. Background Technology

[0002] With the development of microwave integrated circuits, signal transmission rates are increasing, making reliable signal transmission at high frequencies and speeds increasingly important. In practical applications, the cumulative tolerances resulting from product installation and fitment can affect the axial and radial mating accuracy of connectors, thereby impacting product performance.

[0003] Connectors typically employ a pin-and-socket mating design, using rigid contact to achieve grounding. Existing technology, such as Chinese Patent No. CN 107732518 A, discloses a tightly sealed button-type RF coaxial connector, comprising an outer contact, a glass insulator, an engineering plastic insulator, a button, a contact cap, and a center contact. The center contact and outer contact are encapsulated and fixed using a glass insulator, and the button and contact cap are housed within the engineering plastic insulator and assembled with the outer contact. Its grounding method relies on the rigid grounding of the connector's outer contact, i.e., the housing assembly, without axial or radial compensation. This can easily lead to poor contact and impedance discontinuities when the mounting flatness is insufficient.

[0004] To address this, some scholars have proposed connectors with flexible grounding. For example, Chinese Patent No. CN 115832796 A discloses a dual-floating millimeter-wave coaxial connector that uses a variable-diameter elastomer to achieve flexible grounding. However, the diameter of the variable-diameter elastomer is unstable, which can easily lead to edge-to-edge grounding (i.e., line-contact grounding) at the grounding end of the variable-diameter elastomer. This results in a small grounding area and the lack of radial compensation. Furthermore, when the mounting flatness is insufficient, the impedance continuity during elastic grounding compression remains poor. Moreover, the variable-diameter elastomer consumes part of the compression tolerance of the ring-shaped button, resulting in a smaller exposed area of ​​the variable-diameter elastomer, i.e., a smaller exposed grounding area. Additionally, the contact between the variable-diameter elastomer and the ring-shaped button is prone to jamming and failure to spring back. Summary of the Invention

[0005] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a double-ended floating RF connector that can better compensate for both axial and radial defects, avoids the problem of poor impedance continuity during elastic grounding compression when the mounting flatness is insufficient, has a larger exposed grounding size, and is less prone to the situation of variable diameter elastomer jamming and not springing back.

[0006] The purpose of this disclosure is achieved through the following technical solution: A dual-ended floating radio frequency connector, comprising: A first outer conductor, a first mounting hole is formed on a first side of the first outer conductor, a first positioning groove and a second positioning groove are formed on a second side of the first outer conductor, and a central hole is formed on the first outer conductor that passes through the first side and the second side respectively, and the central hole is connected to the second positioning groove; The second outer conductor is located in the second positioning groove and connected to the first outer conductor. The outer peripheral wall of the second outer conductor and the inner wall of the first positioning groove form a second mounting hole. The second outer conductor has a through hole communicating with the central hole and a plurality of anti-rotation openings, and each of the anti-rotation openings is communicating with the through hole. The first ring-shaped button is located in the first mounting hole and connected to the first outer conductor, and the first ring-shaped button protrudes from the first side of the first outer conductor. The second ring-shaped button is located in the second mounting hole. The outer peripheral wall of the second ring-shaped button is in contact with the first outer conductor, and the inner peripheral wall of the second ring-shaped button is in contact with the outer peripheral wall of the second outer conductor. The second ring-shaped button protrudes from the second side of the first outer conductor. A medium body is located inside the through hole. The outer peripheral wall of the medium body is provided with a plurality of anti-rotation protrusions. The plurality of anti-rotation protrusions extend one-to-one into the plurality of anti-rotation openings. A snap-fit ​​hole is formed in the center of the medium body. A center contact is inserted into the snap-fit ​​hole and connected to the medium body. The two ends of the center contact are respectively formed with a first snap-fit ​​hole and a second snap-fit ​​hole. A first columnar hair button is located in the first card hole and is engaged with the center contact member. One end of the first columnar hair button protrudes from the first side of the first outer conductor. A first annular hair button is arranged around the first columnar hair button. The second columnar button is located in the second card hole and is engaged with the center contact member. One end of the second columnar button protrudes from the second side of the first outer conductor, and the second annular button is arranged around the second columnar button.

[0007] In one embodiment, a plurality of anti-rotation protrusions are spaced apart along the outer peripheral wall of the medium.

[0008] In one embodiment, the end face of the dielectric body adjacent to the first annular button is flush with the end face of the second outer conductor adjacent to the first annular button.

[0009] In one embodiment, the second outer conductor is interference-fitted with the first outer conductor.

[0010] In one embodiment, the end of the first annular button located within the first mounting hole is interference-fitted with the first outer conductor.

[0011] In one embodiment, the outer peripheral wall of the end of the second annular button located in the second mounting hole is in interference contact with the first outer conductor, and the inner peripheral wall of the end of the second annular button located in the second mounting hole is in interference contact with the outer peripheral wall of the second outer conductor.

[0012] In one embodiment, both the first card hole and the second card hole are tapered holes.

[0013] In one embodiment, the center contact includes a first snap-fit ​​portion, a through portion, and a second snap-fit ​​portion connected in sequence. The diameters of the first snap-fit ​​portion and the second snap-fit ​​portion are both larger than the diameter of the through portion. The through portion is located within the snap-fit ​​hole and connected to the dielectric body. The first snap-fit ​​hole is formed at the end of the first snap-fit ​​portion away from the through portion, and the second snap-fit ​​hole is formed at the end of the second snap-fit ​​portion away from the through portion. The center contact is coaxially disposed with the second outer conductor.

[0014] In one embodiment, the medium is injection molded into the through portion.

[0015] In one embodiment, the first columnar button and the second columnar button are coaxially arranged, the first annular button and the first columnar button are coaxially arranged, and the second annular button and the second columnar button are coaxially arranged.

[0016] Compared with the prior art, this disclosure has at least the following advantages: 1) In the above-mentioned dual-ended floating RF connector, since the first annular button is located in the first mounting hole and connected to the first outer conductor, and the first annular button protrudes from the first side of the first outer conductor, the annular floating grounding function is realized through the exposed first annular button. In addition, the first columnar button is located in the first locking hole and locked with the center contact member. One end of the first columnar button protrudes from the first side of the first outer conductor, which compensates for the cumulative tolerance caused by the axial and radial directions during the use of the product in an elastic contact manner. In this way, one end of the dual-ended floating RF connector can be well compensated in both the axial and radial directions, thereby realizing reliable signal transmission and reliable annular grounding. Similarly, since the second annular button is located in the second mounting hole, the outer peripheral wall of the second annular button is in contact with the first outer conductor, the inner peripheral wall of the second annular button is in contact with the outer peripheral wall of the second outer conductor, and the second annular button protrudes from the second side of the first outer conductor. The exposed second annular button realizes the annular floating ground function. In addition, the second columnar button is located in the second locking hole and is locked with the center contact. One end of the second columnar button protrudes from the second side of the first outer conductor. The accumulated tolerance caused by the axial and radial directions during the use of the product is compensated in an elastic contact manner. In this way, the other end of the double-ended floating RF connector can be well compensated in both the axial and radial directions, thereby realizing reliable signal transmission and reliable annular grounding. The impedance continuity control ensures that the transmission frequency meets the 110GHz requirement. 2) Since the first annular button protrudes from the first side of the first outer conductor and the second annular button protrudes from the second side of the first outer conductor, both the first and second annular buttons are exposed on the first outer conductor. In addition, since both the first and second annular buttons are annular structures, they can ensure rebound after being subjected to positive pressure. The end face can be compressed and deformed, and elastic contact can be achieved within a certain compression stroke, thereby generating a positive force reaction on the pad. During assembly or use, if there are small gaps due to flatness or board warping deformation of the end face, the floating contact can compensate for the adverse effects of tolerances and gaps, avoiding the problem of poor impedance continuity during elastic grounding compression when the installation flatness is insufficient. It also avoids the situation where the exposed grounding size is large and the variable diameter elastic body is not easy to get stuck and not rebound.

[0017] 3) The signal is transmitted to the central contact through the first columnar button in the central channel, and then to the second columnar button on the opposite side, forming a direct signal transmission over an extremely short distance; while the grounding is achieved through the first and second ring-shaped buttons, realizing a signal loop transmission over an extremely short distance. In addition, the first ring-shaped button is arranged around the first columnar button, and the second ring-shaped button is arranged around the second columnar button, which increases the shielding effect between channels, making the grounding reliable while ensuring the isolation of different channels.

[0018] 4) Since the first annular button protrudes from the first side of the first outer conductor and the second annular button protrudes from the second side of the first outer conductor, floating contact of the center contacts at both ends is achieved. Since the dielectric body is located in the via and connected to the second outer conductor, the outer peripheral wall of the dielectric body is provided with several anti-rotation protrusions. The several anti-rotation protrusions extend one-to-one into several anti-rotation openings. In addition, the center contact passes through the snap-fit ​​hole and is connected to the dielectric body, so that the connector forms a reliable signal transmission circuit. At the same time, the dielectric body is reliably assembled and fixed in the second outer conductor, ensuring the continuity of the inner wall of the outer conductor and improving the continuity of the connector impedance. 5) In the above-mentioned dual-ended floating RF connector link, both ends use air dielectric, and the middle section uses the anti-rotation port of the second outer conductor and the anti-rotation protrusion of the dielectric body to cooperate with each other, which greatly reduces the mixed dielectric constant. Through the structural compensation of the second outer conductor, the dielectric constant at the dielectric body can reach about 50 ohms, which is consistent with the impedance of the air dielectric position of the front center contact, i.e., the inner conductor. This ensures that the impedance of the entire section is continuous and matched, thereby realizing the reliable transmission of 110GHz millimeter wave signals of the connector. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a cross-sectional schematic diagram of a dual-ended floating radio frequency connector according to an embodiment; Figure 2 for Figure 1 A schematic diagram showing the connection between the second outer conductor and the dielectric body of the dual-ended floating RF connector; Figure 3 for Figure 2 A schematic diagram showing the connection between the second outer conductor and the dielectric body from another perspective; Figure 4 for Figure 1 The diagram shows the center contact of the dual-ended floating RF connector being assembled with the first columnar snap button and the second columnar snap button. Figure 5 for Figure 1 An exploded view of a partial structure of the dual-ended floating RF connector shown. Figure 6 This is a partial structural schematic diagram of a dual-ended floating radio frequency connector according to another embodiment; Figure 7 for Figure 6 A partial structural schematic diagram of the dual-ended floating RF connector from another perspective; 10. Double-ended floating RF connector; 100. First outer conductor; 102. First mounting hole; 103. First positioning groove; 104. Second positioning groove; 105. Center hole; 106. Second mounting hole; 200. Second outer conductor; 202. Through hole; 204. Anti-rotation opening; 300. First annular button; 400. Second annular button; 500. Dielectric body; 502. Snap-fit ​​hole; 510. Anti-rotation protrusion; 600. Center contact; 602. First snap-fit ​​hole; 603. Second snap-fit ​​hole; 610. First snap-fit ​​part; 620. Through-hole part; 630. Second snap-fit ​​part; 700. First columnar button; 800. Second columnar button. Detailed Implementation

[0021] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments: Please see Figures 1 to 5 The dual-ended floating radio frequency connector 10, which is an embodiment of the present disclosure, is used to mate with pads on a PCB board, pads for HTCC, pads for LTCC, or adapters.

[0025] In one embodiment, the dual-ended floating RF connector 10 includes a first outer conductor 100, a second outer conductor 200, a first annular button 300, a second annular button 400, a dielectric body 500, a center contact 600, a first columnar button 700, and a second columnar button 800.

[0026] In one embodiment, a first mounting hole 102 is formed on a first side of the first outer conductor 100, and a first positioning groove 103 and a second positioning groove 104 are formed on a second side of the first outer conductor 100. The first outer conductor 100 has a central hole 105 penetrating both the first and second sides, and the central hole 105 communicates with the second positioning groove 104. A first annular button 300 is located within the first mounting hole 102 and connected to the first outer conductor 100, and the first annular button 300 protrudes from the first side of the first outer conductor 100. In this embodiment, the first mounting hole 102 surrounds the central hole 105.

[0027] In one embodiment, the second outer conductor 200 is located in the second positioning groove 104 and connected to the first outer conductor 100. The outer peripheral wall of the second outer conductor 200 and the inner wall of the first positioning groove 103 form a second mounting hole 106. The second outer conductor 200 forms a through hole 202 communicating with the central hole 105 and a plurality of anti-rotation openings 204, each of the anti-rotation openings 204 communicating with the through hole 202.

[0028] In one embodiment, the second annular button 400 is located inside the second mounting hole 106, the outer peripheral wall of the second annular button 400 is in contact with the first outer conductor 100, the inner peripheral wall of the second annular button 400 is in contact with the outer peripheral wall of the second outer conductor 200, and the second annular button 400 protrudes from the second side of the first outer conductor 100.

[0029] In one embodiment, the dielectric body 500 is located inside the via 202, and the outer peripheral wall of the dielectric body 500 is provided with a plurality of anti-rotation protrusions 510. The plurality of anti-rotation protrusions 510 extend one-to-one into the plurality of anti-rotation openings 204, so that the dielectric body 500 and the second outer conductor 200 are assembled and connected to each other.

[0030] In one embodiment, a snap-fit ​​hole 502 is formed at the center of the dielectric body 500, and a center contact 600 passes through the snap-fit ​​hole 502 and is connected to the dielectric body 500, so that the center contact 600 and the second outer conductor 200 are assembled insulated from each other.

[0031] In one embodiment, the two ends of the center contact 600 are respectively formed with a first locking hole 602 and a second locking hole 603; a first columnar button 700 is located in the first locking hole 602 and is engaged with the center contact 600, one end of the first columnar button 700 protrudes from the first side of the first outer conductor 100, and a first annular button 300 is arranged around the first columnar button 700.

[0032] In one embodiment, the second columnar button 800 is located in the second slot 603 and engages with the center contact 600. One end of the second columnar button 800 protrudes from the second side of the first outer conductor 100, and the second annular button 400 surrounds the second columnar button 800.

[0033] The aforementioned dual-ended floating RF connector 10, because the first annular button 300 is located in the first mounting hole 102 and connected to the first outer conductor 100, and the first annular button 300 protrudes from the first side of the first outer conductor 100, achieves the annular floating grounding function through the exposed first annular button 300. In addition, the first columnar button 700 is located in the first locking hole 602 and locked with the center contact 600. One end of the first columnar button 700 protrudes from the first side of the first outer conductor 100, and compensates for the cumulative tolerance caused by axial and radial forces during product use in an elastic contact manner. In this way, one end of the dual-ended floating RF connector 10 can be well compensated in both axial and radial directions, thereby achieving reliable signal transmission and reliable annular grounding. Similarly, since the second annular button 400 is located inside the second mounting hole 106, the outer peripheral wall of the second annular button 400 is in contact with the first outer conductor 100, and the inner peripheral wall of the second annular button 400 is in contact with the outer peripheral wall of the second outer conductor 200. The second annular button 400 protrudes from the second side of the first outer conductor 100. The exposed second annular button 400 realizes the annular floating grounding function. In addition, the second columnar button 800 is located inside the second locking hole 603 and is locked with the center contact 600. One end of the second columnar button 800 protrudes from the second side of the first outer conductor 100. The elastic contact compensates for the cumulative tolerance caused by the axial and radial directions during the use of the product. In this way, the other end of the double-ended floating RF connector 10 can be well compensated in both the axial and radial directions, thereby realizing reliable signal transmission and reliable annular grounding. The impedance continuity control ensures that the transmission frequency meets the 110GHz requirement. Since the first annular button 300 protrudes from the first side of the first outer conductor 100 and the second annular button protrudes from the second side of the first outer conductor 100, both the first annular button 300 and the second annular button 400 are exposed on the first outer conductor 100. In addition, since both the first annular button 300 and the second annular button 400 are annular structures, they can ensure rebound after being subjected to positive pressure. The end face can be compressed and deformed, and elastic contact can be achieved within a certain compression stroke, thereby generating a positive force reaction on the pad. During assembly or use, if there are small gaps due to flatness or board warping deformation of the end face, the floating contact can compensate for the adverse effects caused by tolerances and gaps, avoiding the problem of poor impedance continuity during elastic grounding compression when the installation flatness is insufficient. It also avoids the situation where the exposed grounding size is large and the variable diameter elastic body is not easy to get stuck and not rebound.

[0034] The signal is transmitted through the first columnar button 700 in the central channel to the central contact 600, and then to the second columnar button 800 on the opposite side, forming a direct signal transmission over an extremely short distance. Grounding is achieved through the first ring button 300 and the second ring button 400, realizing a signal loop transmission over an extremely short distance. In addition, the first ring button 300 is arranged around the first columnar button 700, and the second ring button 400 is arranged around the second columnar button 800, which increases the shielding effect between channels, making the grounding reliable while ensuring the isolation of different channels.

[0035] Since the first annular button 300 protrudes from the first side of the first outer conductor 100 and the second annular button 400 protrudes from the second side of the first outer conductor 100, floating contact is achieved between the two central contacts 600. Since the dielectric body 500 is located in the via 202 and connected to the second outer conductor 200, the outer peripheral wall of the dielectric body 500 is provided with a number of anti-rotation protrusions 510. The number of anti-rotation protrusions 510 extend one-to-one into the number of anti-rotation openings 204. In addition, the central contact 600 passes through the snap-fit ​​hole 502 and is connected to the dielectric body 500, so that the connector forms a reliable signal transmission circuit. At the same time, the dielectric body 500 is reliably assembled and fixed in the second outer conductor 200, ensuring the continuity of the inner wall of the outer conductor and improving the continuity of the connector impedance. In the aforementioned dual-ended floating RF connector 10 link, both ends use air dielectric, and the middle section uses the anti-rotation port 204 of the second outer conductor 200 and the anti-rotation protrusion 510 of the dielectric body 500 to cooperate in installation, which greatly reduces the mixed dielectric constant. Through the structural compensation of the second outer conductor 200, the dielectric constant at the dielectric body 500 can reach about 50 ohms, which is consistent with the impedance of the air dielectric position of the front center contact 600, i.e., the front and rear sections of the inner conductor, ensuring that the entire impedance is continuous and matched, thereby realizing the reliable transmission of the connector's 110GHz millimeter wave signal.

[0036] Furthermore, the length of the first annular button 300 exposed outside the first outer conductor 100 is equal to the length of the second columnar button 800 exposed outside the first outer conductor 100, so as to ensure that the same axial tolerance can be met when the two ends are in contact.

[0037] like Figure 1 , Figure 2 and Figure 5 As shown, in one embodiment, a plurality of anti-rotation protrusions 510 are spaced apart along the outer peripheral wall of the dielectric body 500, so that the dielectric body 500 is reliably assembled to the second outer conductor 200, while preventing the dielectric body 500 from rotating relative to the second outer conductor 200. In this embodiment, there are three anti-rotation protrusions 510, that is, the dielectric body 500 has a three-lobed structure, and there are three anti-rotation openings 204. The three anti-rotation protrusions 510 are matched one-to-one with the three anti-rotation openings 204 to form a composite part.

[0038] like Figure 1 , Figure 2 As shown, in one embodiment, the end face of the dielectric body 500 adjacent to the first annular button 300 is flush with the end face of the second outer conductor 200 adjacent to the first annular button 300, so that the end face of the dielectric body 500 is relatively flat when assembled on the second outer conductor 200, thereby making the dielectric body 500 and the second outer conductor 200 reliably contact each other.

[0039] In one embodiment, the second outer conductor 200 is interference-fitted with the first outer conductor 100, ensuring a secure connection between them. Through structural compensation of the second outer conductor 200, the impedance of the entire connector is ensured to be continuous and matched, thereby achieving high-performance, high-frequency signal transmission requirements. The two ends of the center contact 600 are axially pressed together by the first columnar button 700 and the second columnar button 800, ensuring reliable signal transmission even with assembly gaps. The annular button grounding ensures continuous grounding and also shields the signal from the center contact 600, thus meeting the requirements for millimeter-wave signal transmission.

[0040] like Figure 1 As shown, in one embodiment, the end of the first annular button 300 located inside the first mounting hole 102 is interference-fitted with the first outer conductor 100, so that the first annular button 300 is firmly connected to the first mounting hole 102, preventing the first annular button 300 from detaching from the first mounting hole 102. The end of the first annular button 300 exposed outside the first outer conductor 100 can elastically deform in both the axial and radial directions to compensate for the cumulative tolerance of the product, thereby realizing the annular floating grounding function.

[0041] like Figure 6 As shown, in another embodiment, the inner wall of the first mounting hole 102 is provided with a first locking groove 1022, so that the inner wall of the first mounting hole forms a stepped structure. One end of the first annular button 300 is located in the first locking groove and is interference-connected with the first outer conductor to prevent the first annular button 300 from falling out of the first mounting hole 102.

[0042] like Figure 1 As shown, in one embodiment, the outer peripheral wall of the end of the second annular button 400 located in the second mounting hole 106 is in interference contact with the first outer conductor 100, and the inner peripheral wall of the end of the second annular button 400 located in the second mounting hole 106 is in interference contact with the outer peripheral wall of the second outer conductor 200, so that the second annular button 400 is firmly connected to the second mounting hole 106, preventing the second annular button 400 from falling out of the second mounting hole 106. The end of the second annular button 400 exposed to the first outer conductor 100 can elastically deform in both the axial and radial directions to compensate for the cumulative tolerance of the product, thereby realizing the annular floating grounding function.

[0043] like Figure 7 As shown, in another embodiment, the inner wall of the first positioning groove 103 is provided with a second clamping groove 1032 that communicates with the second positioning groove 104, so that the inner wall of the second mounting hole forms a stepped structure. One end of the second annular button 400 is located in the second clamping groove and is interference-connected with the first outer conductor to prevent the second annular button 400 from falling out of the second mounting hole.

[0044] In one embodiment, both the first locking hole 602 and the second locking hole 603 are tapered holes, making their manufacturing process easier. In this embodiment, the inner walls of both the first locking hole 602 and the second locking hole 603 are electroplated, ensuring that the first columnar button 700 reliably contacts and connects to the hole wall of the first locking hole 602, and the second columnar button 800 reliably contacts and connects to the hole wall of the second locking hole 603.

[0045] Furthermore, the end faces of the center contact 600 are lower than the outer end faces of the first outer conductor 100 to prevent the connection gap caused by hard contact interference at the end faces when the double-ended floating RF connector 10 is mated, which would lead to poor contact performance of the connector.

[0046] like Figures 1 to 5As shown, in one embodiment, the center contact 600 includes a first latching portion 610, a through portion 620, and a second latching portion 630 connected in sequence. The diameters of the first latching portion 610 and the second latching portion 630 are both larger than the diameter of the through portion 620. The through portion 620 is located within the latching hole 502 and connected to the dielectric body 500, allowing the through portion 620 to be reliably assembled onto the dielectric body 500. Specifically, the first latching hole 602 is formed at the end of the first latching portion 610 away from the through portion 620, and the second latching hole 603 is formed at the end of the second latching portion 630 away from the through portion 620. The center contact 600 is coaxially arranged with the second outer conductor 200 to ensure the transmission of millimeter-wave signals of the dual-ended floating RF connector 10. In this embodiment, the first latching portion 610, the through portion 620, and the second latching portion 630 are integrally formed. In other embodiments, the first snap-fit ​​portion 610, the through portion 620, and the second snap-fit ​​portion 630 may also be individually formed and welded together.

[0047] In another embodiment, the dielectric body 500 is injection molded into the through-hole 620, resulting in better overall structural integrity of the dielectric body 500 and better assembly of the dielectric body 500 into the through-hole 620. It is understood that in other embodiments, the dielectric body 500 is not limited to being injection molded into the through-hole 620. For example, the dielectric body 500 has an opening communicating with the snap-fit ​​hole 502, extending to the outer surface of the dielectric body 500, making it easy to assemble the dielectric body 500 into the through-hole 620, while ensuring a tight connection between the dielectric body 500 and the through-hole 620, and minimizing the impact of the opening on the dielectric constant of the dielectric body.

[0048] In one embodiment, the first columnar hair button 700 and the second columnar hair button 800 are coaxially arranged, the first annular hair button 300 is coaxially arranged with the first columnar hair button 700, and the second annular hair button 400 is coaxially arranged with the second columnar hair button 800, ensuring reliable transmission of millimeter-wave signals by the dual-ended floating RF connector 10.

[0049] Compared with the prior art, this disclosure has at least the following advantages: 1) In the above-mentioned double-ended floating RF connector 10, since the first annular button 300 is located in the first mounting hole 102 and connected to the first outer conductor 100, and the first annular button 300 protrudes from the first side of the first outer conductor 100, the exposed first annular button 300 realizes the annular floating ground function. In addition, the first columnar button 700 is located in the first locking hole 602 and locked with the center contact 600. One end of the first columnar button 700 protrudes from the first side of the first outer conductor 100, and the cumulative tolerance caused by the axial and radial directions during the use of the product is compensated in an elastic contact manner. In this way, one end of the double-ended floating RF connector 10 can be well compensated in both the axial and radial directions, thereby realizing reliable signal transmission and reliable annular grounding. Similarly, since the second annular button 400 is located inside the second mounting hole 106, the outer peripheral wall of the second annular button 400 is in contact with the first outer conductor 100, and the inner peripheral wall of the second annular button 400 is in contact with the outer peripheral wall of the second outer conductor 200. The second annular button 400 protrudes from the second side of the first outer conductor 100. The exposed second annular button 400 realizes the annular floating grounding function. In addition, the second columnar button 800 is located inside the second locking hole 603 and is locked with the center contact 600. One end of the second columnar button 800 protrudes from the second side of the first outer conductor 100. The elastic contact compensates for the cumulative tolerance caused by the axial and radial directions during the use of the product. In this way, the other end of the double-ended floating RF connector 10 can be well compensated in both the axial and radial directions, thereby realizing reliable signal transmission and reliable annular grounding. The impedance continuity control ensures that the transmission frequency meets the 110GHz requirement. 2) Since the first annular button 300 protrudes from the first side of the first outer conductor 100 and the second annular button protrudes from the second side of the first outer conductor 100, both the first annular button 300 and the second annular button 400 are exposed on the first outer conductor 100. In addition, since both the first annular button 300 and the second annular button 400 are annular structures, they can ensure rebound after being subjected to positive pressure. The end face can be compressed and deformed, and elastic contact can be achieved within a certain compression stroke, thereby generating a positive force reaction on the pad. During assembly or use, if there are small gaps due to flatness or board warping deformation of the end face, the floating contact can compensate for the adverse effects caused by tolerances and gaps, avoiding the problem of poor impedance continuity during elastic grounding compression when the installation flatness is insufficient. It also avoids the situation where the exposed grounding size is large and the variable diameter elastic body is stuck and does not rebound.

[0050] 3) The signal is transmitted through the first columnar button 700 in the central channel to the central contact 600, and then to the second columnar button 800 on the opposite side, forming a direct signal transmission over an extremely short distance; while the grounding is achieved through the first ring button 300 and the second ring button 400, realizing a signal loop transmission over an extremely short distance. In addition, the first ring button 300 is arranged around the first columnar button 700 and the second ring button 400 is arranged around the second columnar button 800, which increases the shielding effect between channels, making the grounding reliable while ensuring the isolation of different channels.

[0051] 4) Since the first annular button 300 protrudes from the first side of the first outer conductor 100 and the second annular button 400 protrudes from the second side of the first outer conductor 100, floating contact is achieved between the two central contact pieces 600. Since the dielectric body 500 is located in the through hole 202 and connected to the second outer conductor 200, the outer peripheral wall of the dielectric body 500 is provided with a number of anti-rotation protrusions 510. The number of anti-rotation protrusions 510 extend one-to-one into the number of anti-rotation openings 204. In addition, the central contact piece 600 passes through the snap-fit ​​hole 502 and is connected to the dielectric body 500, so that the connector forms a reliable signal transmission circuit. At the same time, the dielectric body 500 is reliably assembled and fixed in the second outer conductor 200, ensuring the continuity of the inner wall of the outer conductor and improving the continuity of the connector impedance. 5) In the above-mentioned dual-ended floating RF connector 10 link, both ends use air dielectric, and the middle section uses the anti-rotation port 204 of the second outer conductor 200 and the anti-rotation protrusion 510 of the dielectric body 500 to cooperate with each other, which greatly reduces the mixed dielectric constant. Through the structural compensation of the second outer conductor 200, the dielectric constant at the dielectric body 500 can reach about 50 ohms, which is consistent with the impedance of the air dielectric position of the front center contact 600, i.e., the front and rear sections of the inner conductor, ensuring that the entire impedance is continuous and matched, thereby realizing the reliable transmission of the 110GHz millimeter wave signal of the connector.

[0052] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A dual-ended floating radio frequency connector, characterized in that, include: A first outer conductor has a first mounting hole formed on a first side, a first positioning groove and a second positioning groove formed on a second side of the first outer conductor, and a central hole formed on the first outer conductor that passes through the first side and the second side respectively. The first mounting hole is arranged around the central hole, and the central hole is connected to the second positioning groove. The second outer conductor is located in the second positioning groove and connected to the first outer conductor. The outer peripheral wall of the second outer conductor and the inner wall of the first positioning groove form a second mounting hole. The second outer conductor has a through hole communicating with the central hole and a plurality of anti-rotation openings, and each of the anti-rotation openings is communicating with the through hole. The first ring-shaped button is located in the first mounting hole and connected to the first outer conductor, and the first ring-shaped button protrudes from the first side of the first outer conductor. The second ring-shaped button is located in the second mounting hole. The outer peripheral wall of the second ring-shaped button is in contact with the first outer conductor, and the inner peripheral wall of the second ring-shaped button is in contact with the outer peripheral wall of the second outer conductor. The second ring-shaped button protrudes from the second side of the first outer conductor. A medium body is located inside the through hole. The outer peripheral wall of the medium body is provided with a plurality of anti-rotation protrusions. The plurality of anti-rotation protrusions extend one-to-one into the plurality of anti-rotation openings. A snap-fit ​​hole is formed in the center of the medium body. A center contact is inserted into the snap-fit ​​hole and connected to the medium body. The two ends of the center contact are respectively formed with a first snap-fit ​​hole and a second snap-fit ​​hole. A first columnar hair button is located in the first card hole and is engaged with the center contact member. One end of the first columnar hair button protrudes from the first side of the first outer conductor. A first annular hair button is arranged around the first columnar hair button. The second columnar button is located in the second card hole and is engaged with the center contact member. One end of the second columnar button protrudes from the second side of the first outer conductor, and the second annular button is arranged around the second columnar button.

2. The dual-ended floating RF connector according to claim 1, characterized in that, Several anti-rotation protrusions are spaced apart along the outer peripheral wall of the medium.

3. The dual-ended floating RF connector according to claim 1, characterized in that, The end face of the dielectric body adjacent to the first annular button is flush with the end face of the second outer conductor adjacent to the first annular button.

4. The dual-ended floating RF connector according to claim 1, characterized in that, The second outer conductor is interference-fitted with the first outer conductor.

5. The dual-ended floating RF connector according to claim 1, characterized in that, The end of the first annular button located inside the first mounting hole is interference-fitted with the first outer conductor.

6. The dual-ended floating RF connector according to claim 1, characterized in that, The outer peripheral wall of the end of the second annular button located in the second mounting hole is in interference contact with the first outer conductor, and the inner peripheral wall of the end of the second annular button located in the second mounting hole is in interference contact with the outer peripheral wall of the second outer conductor.

7. The dual-ended floating RF connector according to claim 1, characterized in that, Both the first card hole and the second card hole are tapered holes.

8. The dual-ended floating RF connector according to claim 1, characterized in that, The center contact includes a first snap-fit ​​portion, a through portion, and a second snap-fit ​​portion connected in sequence. The diameters of the first snap-fit ​​portion and the second snap-fit ​​portion are both larger than the diameter of the through portion. The through portion is located inside the snap-fit ​​hole and connected to the dielectric body. The first snap-fit ​​hole is formed at the end of the first snap-fit ​​portion away from the through portion, and the second snap-fit ​​hole is formed at the end of the second snap-fit ​​portion away from the through portion. The center contact is coaxially arranged with the second outer conductor.

9. The dual-ended floating RF connector according to claim 8, characterized in that, The medium is injection molded into the through-hole.

10. The dual-ended floating RF connector according to claim 1, characterized in that, The first columnar hair button and the second columnar hair button are coaxially arranged, the first annular hair button and the first columnar hair button are coaxially arranged, and the second annular hair button and the second columnar hair button are coaxially arranged.

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