CN2899175Y

CN2899175Y - Coaxial radio-frequency filter connector

Info

Publication number: CN2899175Y
Application number: CNU2006200338521U
Authority: CN
Inventors: 肖雨来
Original assignee: Xinxinshenfeng Electronics Science And Technology Co Ltd Chengdu
Current assignee: Xinxinshenfeng Electronics Science And Technology Co Ltd Chengdu
Priority date: 2006-04-17
Filing date: 2006-04-17
Publication date: 2007-05-09
Anticipated expiration: 2016-04-17

Abstract

The utility model discloses a coaxial radio-frequency filter connector, comprising a cover (1). Pins (2) is arranged in the cover (1), a front pressing ring (3) and a rear pressing ring (4) are ringed at the front and the rear of a pin (2); a porcelain capacitor (6) encloses a pin(2) and is positioned between the front and the rear pressing ring; and a grounding plate (7) encloses the porcelain capacitor (6), the grounding plate (7) contacts the inner wall of the cover (1), and filling material (5) is filled in the gap between the front and the rear pressing rings in the cover (1). The utility model thoroughly solves the problem of electromagnetic leakage of coaxial radio-frequency filter connector, and satisfies the electromagnetic compatibility and environment adaptability. Meanwhile, the utility model has the advantages of small size, light weight, convenient installation and is suitable for all kinds of wireless electrical device and electronic instrument.

Description

The radio-frequency (RF) coaxial filter connector

Technical field

The utility model relates to connector, especially relates to a kind of radio-frequency (RF) coaxial filter connector.

Background technology

At present, radio frequency (RF) coaxial connector mainly is connected coaxial radio frequency cable usefulness for the loop of rf of wireless device and electronic instrument.Radio frequency (RF) coaxial connector is the same with common connector, and interference signal all can and conduct outside the equipment from the radio frequency (RF) coaxial connector radiation, causes the failure (as shown in Figure 1) of Electro Magnetic Compatibility.The frequency band that exceeds standard is inconsistent to some extent according to the difference of system, generally at 3～100MHz.Generally realize in the Electro Magnetic Compatibility that solves radio-frequency (RF) coaxial with filtering method.Filtering is exactly that exit exposed before the cabinet outside interference signal is switched to ground.Add feed-through filter on cabinet bypasses interference signal to concrete method exactly, and interference signal just can not be radiated outside the equipment by connector, thereby reaches the purpose (as shown in Figure 2) of Electro Magnetic Compatibility.Each lead-in wire of radio frequency (RF) coaxial connector adds a feed-through filter among Fig. 2, a connector needs a plurality of feed-through filters, and not only radio frequency (RF) coaxial connector perhaps in system so just needs more feed-through filter to form array, will take bigger space.Be not easy to guarantee the electric continuity of electromagnetic shielding needs in this case, cause electromagnetic compatibility defective easily.In addition, the multiple welding of lead-in wire has increased the unreliability of data wire, breaks down easily during transfer of data, causes loss of data, and functions of the equipments were lost efficacy.

Summary of the invention

The purpose of this utility model provides a kind of Electro Magnetic Compatibility, environmental suitability that not only satisfies equipment, and the little radio-frequency (RF) coaxial filter connector of volume.

In order to achieve the above object, the utility model adopts following technical scheme: a kind of radio-frequency (RF) coaxial filter connector, comprise the shell that has ring flange, contact pin is housed in the enclosure, trim ring and back trim ring are with porcelain Jie tubular capacitor before being with before and after the contact pin on the contact pin between the forward and backward trim ring, are with ground plate outside porcelain Jie tubular capacitor, this ground plate contacts with outer casing inner wall, and the gap embedding between the forward and backward trim ring in the enclosure has inserts.Described shell is installed on the cabinet, is provided with conductive gasket between the ring flange of shell and the cabinet.

The utility model is with porcelain Jie tubular capacitor on the contact pin between the forward and backward trim ring, the porcelain tubular capacitor that is situated between is placed in the shell, outside porcelain Jie tubular capacitor, be with ground plate, this ground plate contacts with outer casing inner wall, avoided the electromagnetic leakage of coaxial connector like this, satisfy the Electro Magnetic Compatibility of equipment, and reduced volume, it is as a whole that filtering and connector are melted.Gap embedding between the forward and backward trim ring in the enclosure has inserts, makes whole connector form an integral body, has satisfied facility environment adaptability.The utility model radio-frequency (RF) coaxial filter connector has thoroughly solved the electromagnetic leakage problem of radio frequency (RF) coaxial connector, satisfies Electro Magnetic Compatibility, the environmental suitability of equipment.

Advantage of the present utility model: this connector can not only be realized outside self function, and satisfy the Electro Magnetic Compatibility requirement.Has volume advantage little, in light weight, easy for installation.Be applicable to all kinds of wireless devices and electronic instrument.

Description of drawings

Fig. 1 is the structural representation of traditional connector electromagnetic interference;

Fig. 2 is that traditional connector adopts filtering to realize the structural representation of Electro Magnetic Compatibility;

Fig. 3 is a structural representation of the present utility model;

Fig. 4 is a mounting structure intention of the present utility model;

Filtering principle figure of the present utility model during Fig. 5.

In Fig. 1,11 is cabinet, and 12 is connector, and 13 is lead, and 14 is radiated emission, and 15 are the radiation coupling.In Fig. 2,16 is cabinet, and 17 is connector, and 18 is feed-through filter.Among Fig. 4,19 is the utility model radio-frequency (RF) coaxial filter connector.Among Fig. 5 10 is tubular type electric capacity.

Embodiment

The structure of a kind of radio-frequency (RF) coaxial filter connector of the utility model mainly is made of the shell 1 that has ring flange, contact pin 2, preceding trim ring 3, back trim ring 4, inserts 5, porcelain Jie tubular capacitor 6, ground plate 7 as shown in Figure 3, Figure 4.In shell 1, be installed with contact pin 2, trim ring 3 and back trim ring 4 before contact pin 2 front and back are with, on the contact pin between the forward and backward trim ring 2, be with porcelain Jie tubular capacitor 6, outside porcelain Jie tubular capacitor 6, be with ground plate 7, this ground plate 7 contacts with shell 1 inwall, and the gap embedding between the forward and backward trim ring in shell 1 has inserts 5.During installation, shell 1 is installed on the cabinet 8, is provided with conductive gasket 9 between the ring flange of shell 1 and the cabinet 8, realizes electromagnetic sealing.Conductive gasket 9 can adopt silvered glass ball or silver coated aluminum material, and inserts 5 can adopt resinous material.Because capacitor 6 is placed on shell 1 inside, the volume when not adding filtering of the radio-frequency (RF) coaxial filter connector volume among Fig. 3 is the same.

Filtering operation principle of the present utility model as shown in Figure 5; the filter effect of any leaded capacitor all can be subjected to the restriction of lead-in inductance; when UHF or higher frequency range will obtain better filter effect; when particularly the guard shield body is not penetrated; must use core-through capacitor, the own lead of porcelain Jie tubular capacitor and device forms core-through capacitor among Fig. 3.Use metal ground plate and shell and panel to constitute capacitor grounding.Because earth-current is dispersed in around the center conductor in 360 ° the scope, does not therefore in fact have inductance, electric capacity can keep good performance in surpassing the frequency range of GHz.Each root lead-in wire of the utility model radio-frequency (RF) coaxial filter connector has all passed through Filtering Processing, can not produce electromagnetic leakage, satisfies the Electro Magnetic Compatibility requirement.

Claims

1, a kind of radio-frequency (RF) coaxial filter connector, comprise the shell (1) that has ring flange, in shell (1), be installed with contact pin (2), be with preceding trim ring (3) and back trim ring (4) before and after the contact pin (2), it is characterized in that: on the contact pin between the forward and backward trim ring (2), be with porcelain Jie tubular capacitor (6), outside porcelain Jie tubular capacitor (6), be with ground plate (7), this ground plate (7) contacts with shell (1) inwall, and the gap embedding between the forward and backward trim ring in shell (1) has inserts (5).

2, radio-frequency (RF) coaxial filter connector according to claim 1 is characterized in that: this shell (1) is installed on the cabinet (8), is provided with conductive gasket (9) between the ring flange of shell (1) and the cabinet (8).