CN220456833U

CN220456833U - Four-body co-welding structure applied to radio frequency coaxial filter connector

Info

Publication number: CN220456833U
Application number: CN202322174359.8U
Authority: CN
Inventors: 张少波; 王泗瑞; 翟乐乐; 赵东阳; 王宁; 张宿
Original assignee: 40th Institute Of China Electronics Technology Corp
Current assignee: 40th Institute Of China Electronics Technology Corp
Priority date: 2023-08-10
Filing date: 2023-08-10
Publication date: 2024-02-06
Anticipated expiration: 2033-08-10

Abstract

The utility model provides a be applied to coaxial filter connector's of radio frequency four-body and weld structure altogether, includes wave filter, earth connection piece and two inner conductors, wave filter horizontal arrangement, earth connection piece welding corresponds its axial middle part region on the wave filter downside position, two inner conductors locate wave filter axial both ends respectively, and two inner conductors all arrange with the wave filter is coaxial, establish two inner conductors be close to the one end of wave filter for interior, keep away from the one end of wave filter for outer along the axis direction, the inner of two inner conductors all is equipped with the C shape draw-in groove with wave filter assorted, wave filter axial both ends card respectively go into the C shape draw-in groove that corresponds one side inner conductor and with correspond C shape draw-in groove welding fixedly. And the PCB is removed, the inner conductor is directly welded with the LTCC filter, and the LTCC filter is directly welded with the grounding block, so that an axial gap does not exist between the inner conductor and the LTCC filter, and the axial dimension and the radial dimension are reduced.

Description

Four-body co-welding structure applied to radio frequency coaxial filter connector

Technical Field

The utility model relates to a four-body co-welding structure applied to a radio frequency coaxial filter connector.

Background

With the advent of LTCC (low temperature ceramic cofiring) filters, a new solution is provided for miniaturization and high integration of communication equipment. The LTCC filter has a specific packaging form and can be well matched with the welding process of the PCB, so that the LTCC filter is mostly applied to the PCB as an independent device. Along with the demand of communication equipment for miniaturization of the filter, a radio frequency coaxial filter connector using an LTCC filter as a core is derived, the product is small in size and convenient to use, but the application of the LTCC filter still adopts a mode of being connected with a PCB.

In the prior art, the LTCC filter, the inner conductor, and the grounding block are all soldered on the PCB board, see chinese patent CN202223412473.1, to connect the input/output port with the LTCC filter and ground the LTCC filter. In order to ensure the welding reliability and the performance index of the product when the bonding pad is welded with the PCB, the bonding pad on the PCB is usually larger than a device, so that a certain gap exists between the inner conductor and the LTCC filter, and the axial size of the product is increased; meanwhile, the LTCC filter and the inner conductor are mounted on the PCB, and the LTCC filter has a certain thickness, so that the LTCC filter cannot be positioned in the center of a product, the radial size of the product is increased, and miniaturization of the product is not facilitated.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a four-body co-welding structure applied to a radio frequency coaxial filter connector, a PCB is removed, an inner conductor is directly welded with an LTCC filter, the LTCC filter is directly welded with a grounding block, so that an axial gap does not exist between the inner conductor and the LTCC filter, and meanwhile, the LTCC filter can be placed in the center of a product.

In order to solve the technical problem, the utility model provides a be applied to coaxial filter connector's of radio frequency four-body and weld structure altogether, including wave filter, earth connection piece and two inner conductors, wave filter horizontal arrangement, earth connection piece welding correspond its axial middle part region on the wave filter downside position, two inner conductors locate wave filter axial both ends respectively, and two inner conductors all arrange with the wave filter is coaxial, establish two inner conductors and be the one end that is close to the wave filter along the axis direction be interior, keep away from the one end of wave filter be outside, two inner conductor's inner all be equipped with wave filter assorted C shape draw-in groove, wave filter axial both ends card respectively go into correspond one side inner conductor's C shape draw-in groove and with correspond C shape draw-in groove welding fixedly.

For the sake of simplicity, the four-body co-welding structure applied to the rf coaxial filter connector according to the present utility model is hereinafter simply referred to as the present structure.

The advantage of this structure: besides the PCB, the inner conductor is directly welded with the LTCC filter, the LTCC filter is directly welded with the grounding block, so that an axial gap does not exist between the inner conductor and the LTCC filter, and meanwhile, the LTCC filter can be positioned in the center of a product.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Detailed Description

Referring to fig. 1, a four-body co-welding structure applied to a radio frequency coaxial filter connector comprises a filter 1, a grounding block 2 and two inner conductors 3, wherein the filter 1 is horizontally arranged, the grounding block 2 is welded on the lower side of the filter 1 and corresponds to the axial middle area of the filter, the two inner conductors 3 are respectively arranged at the two axial ends of the filter 1, the two inner conductors 3 are coaxially arranged with the filter 1, one end, close to the filter 1, of the two inner conductors 3 along the axial direction is arranged to be inner, one end, far away from the filter 1 is arranged to be outer, of the inner ends of the two inner conductors 3 are respectively provided with a C-shaped clamping groove 31 matched with the filter 1, and the two axial ends of the filter 1 are respectively clamped into the C-shaped clamping grooves 31 corresponding to the inner conductors 3 at one side and are welded and fixed with the C-shaped clamping grooves 31.

The advantage of this structure: except the PCB board, the inner conductor 3 is directly welded with the LTCC filter 1, and the LTCC filter 1 is directly welded with the grounding block 2, so that no axial gap exists between the inner conductor 3 and the LTCC filter 1, and meanwhile, the LTCC filter 1 can be positioned in the center of a product.

Claims

1. Be applied to coaxial filter connector's of radio frequency four-body and weld structure, its characterized in that: the filter is horizontally arranged, the grounding block is welded on the lower side of the filter and corresponds to the axial middle area of the filter, the two inner conductors are respectively arranged at two axial ends of the filter and are coaxially arranged with the filter, one end, which is close to the filter along the axial direction, of the two inner conductors is arranged in the middle, one end, which is far away from the filter, of the two inner conductors is arranged outside, C-shaped clamping grooves matched with the filter are respectively formed in the inner ends of the two inner conductors, and the two axial ends of the filter are respectively clamped into the C-shaped clamping grooves of the inner conductor corresponding to one side and are welded and fixed with the corresponding C-shaped clamping grooves.