CN201118014Y

CN201118014Y - High-frequency precision-type connector

Info

Publication number: CN201118014Y
Application number: CNU2007200325776U
Authority: CN
Inventors: 胡波
Original assignee: Xi'an Kenaite Sci & Tech LLC
Current assignee: Xi'an Kenaite Sci & Tech LLC
Priority date: 2007-08-23
Filing date: 2007-08-23
Publication date: 2008-09-17
Anticipated expiration: 2017-08-23

Abstract

A high-frequency, precision connector comprises a shell (7), a threaded sleeve (5), an external conductor (8) and an internal conductor (1); wherein, the internal conductor (1) is integrated with a cable core wire; a lining (2) is integrated with a cable insulating layer;throughholes (6) are intervallically arranged on an insulator (4) supporting the internal conductor (1), and the distance (A) from an insulating medium interface to an electric reference surface is twice as large as the inner diameter of the external conductor (8). Because the distance from the insulating medium interface to the electric reference surface is twice as large as the inner diameter of the external conductor, the resonance appeared among insulating supports after a plug fits with a socket can be prevented from generating a high-order mode; and then the operating frequency of the connector is reduced. Applicable to the testing of high-frequency cable components, the operating frequency of the connector is expanded as between 0Hz and 15GHz and is characterized in good electric properties and relatively convenient fabrication.

Description

The accurate connector of high frequency

Technical field

The utility model relates to a kind of wireless device and is connected the accurate connector of high frequency that radio frequency coaxial-cable is used with instrument.

Background technology

N series connector is a kind of middle high turbine with helicitic texture, have that vibration resistance is strong, reliability is high, characteristics such as machinery and excellent electrical properties, be widely used in wireless device and the instrument under vibration and the environment mal-condition and be connected radio frequency coaxial-cable usefulness.But in the real world applications process, there is following limitation:

1.N the frequency of utilization of type connector GB is 0-11GHz, frequency of utilization more commonly used is 0-3GHz.Under the low frequency situation, conventional design realizes low standing-wave ratio easily, and electrical property is better; And the frequency of utilization of accurate N Connector is 0-18GHz, and the design when method for designing and same frequency in theory are low has the different of some matter, and electrical property is difficult for realizing that the difficulty of design obviously also increases certainly.

2. along with continuous progress in science and technology, communication aspects use frequency also constantly increase, what have arrive millimeter wave, the use of the connector of high frequency N type becomes certainty.

High frequency connectors are different from the particularity of low frequency, have determined its design that the characteristics of self are also arranged: except method for designing and theoretical and low frequency are not quite similar, be exactly quote new material, new processing technology in addition.From total development trend, accurate high frequency connectors are used can be more and more wider, and wide application market is arranged.

Summary of the invention

The technical problems to be solved in the utility model is for overcoming the deficiencies in the prior art, and provide a kind of and can be used for upper frequency, have good electrical properties, the accurate connector of high frequency that processing and manufacturing is relatively easy.

The technical solution that realizes above-mentioned purpose is:

Inner wire and cable core are solidified as a whole, and lining and cable shield are solidified as a whole, and are arranged at intervals with through hole on the insulator of support inner wire, and the dielectric interface is to the twice of the distance A between the electric plane of reference greater than the outer conductor internal diameter.

The further technical solution that realizes above-mentioned purpose is:

Inner wire and cable core welding are fixing, and lining and cable shield also weld fixing;

Swivel nut compresses compensated loop on insulator;

Swivel nut and outer conductor spin.

The good effect that the utility model produced is: the dielectric interface is to the twice of the distance A between the electric plane of reference greater than the outer conductor internal diameter, can prevent that plug and socket from cooperating the resonance that is occurred between the insulation support of back to produce high-rder mode, and then reduce the frequency of utilization of connector.The structure of punching on insulator can reduce dielectric constant, increases cut-off frequency, and compensation discontinuity capacitance.The dielectric interface is to the twice of the distance A between the electric plane of reference greater than the outer conductor internal diameter.A compensated loop is used for compensating cable end face and the different reflections that cause of dielectric because of the different of dielectric constant and outer conductor internal diameter and lining internal diameter, and can effectively reduce this end face reflection.It is 0-15GH that the frequency of utilization of this connector expands, and good electrical properties is arranged, and processing and manufacturing is convenient relatively, can be used for testing the high frequency cable assembly.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the structure for amplifying schematic diagram of insulator.

Fig. 3 is the end view of Fig. 2.

Embodiment

As Fig. 1, Fig. 2, shown in Figure 3, the axial centre of this connector has an inner wire 1, and cable core and inner wire 1 welding are fixing, and the screen of low-loss phase-stable phase flexible cable is fixing with lining 2 welding that are positioned at swivel nut 5.Insulator made from polytetrafluoroethylmaterial material or methylpentene polymer (TPX) 4 with interval circular hole 6 of socket on inner wire 1, this insulator 4 should contact with the compensated loop 3 in the outer conductor 8.Swivel nut 5 and outer conductor 8 spin by screw thread, behind swivel nut 5 screw-ins with crimping lining 2, thereby compensated loop 3 is pressed on the insulator 4.Shell 7 spins with outer conductor 8 again or socket is an one.

Dielectric interface of this connector and the distance A between the electric plane of reference should be more than or equal to the twice of the internal diameter Φ B of outer conductor 8, i.e. A 〉=2B.For example getting B is 7 millimeters, and then A should be 14.5 millimeters or 14 millimeters.Secondly, the thinner thickness of the support of accurate connector, quarter-wave when being less than highest frequency, with the higher mode of avoiding occurring in the insulator, and consider the intensity of support, so the thickness of insulator 4 should be 3mm, and adopt the method for punching to reduce dielectric constant, increase cut-off frequency, and mend and taste discontinuity capacitance.

The effect of said compensated loop 3 is to be used for compensating cable end face and different and outer conductor 8 and the lining 2 internal diameters different reflections that cause of dielectric because of dielectric constant, and can effectively reduce this end face reflection.

Claims

1, the accurate connector of a kind of high frequency, comprise shell (7), swivel nut (5), outer conductor (8) and inner wire (1), it is characterized in that inner wire (1) and cable core are solidified as a whole, lining (2) and cable shield are solidified as a whole, be arranged at intervals with through hole (6) on the insulator (4) of support inner wire (1), the dielectric interface is to the twice of the distance A between the electric plane of reference greater than outer conductor (8) internal diameter.

2, the accurate connector of high frequency as claimed in claim 1 is characterized in that the welding of inner wire (1) and cable core is fixing, and lining (2) and cable shield also weld fixing.

3, the accurate connector of high frequency as claimed in claim 1 is characterized in that swivel nut (5) compresses compensated loop (3) on insulator (4).

4, the accurate connector of high frequency as claimed in claim 1 is characterized in that swivel nut (5) and outer conductor (8) spin.