CN104659458A

CN104659458A - Air-sealed wideband coaxial waveguide converter

Info

Publication number: CN104659458A
Application number: CN201310596418.9A
Authority: CN
Inventors: 张翠; 邢路; 王艳丽
Original assignee: Xian Elite Electronic Industrial Co Ltd
Current assignee: Xian Elite Electronic Industrial Co Ltd
Priority date: 2013-11-21
Filing date: 2013-11-21
Publication date: 2015-05-27

Abstract

An air-sealed wideband coaxial waveguide converter comprises an insulator, a shell, an insertion hole, glass powder, a probe, a sleeve and a waveguide tube, wherein the bottom of the shell is connected with one end of the probe and is sealed by the glass powder to form a sealed combined shell; the insulator is positioned inside the shell; the insertion hole is formed in the insulator; the other end of the probe is connected with the sleeve; the probe and the sleeve are positioned inside the waveguide tube; the shell is arranged on the outer wall of the waveguide tube. The air-sealed wideband coaxial waveguide converter has excellent radio frequency performance, achieves the air tightness at a wide frequency band, and can avoid air leakage at a certain pressure difference.

Description

A kind of wide band coaxial waveguide converter of hermetic seal

Technical field

The invention discloses a kind of wide band waveguide coaxial converter of hermetic seal, mainly solve coaxial waveguide converter in a sealed meter environment in the technical problem of wider transmitted in band high-power signal.

Background technology

Coaxial waveguide converter is applied widely in microwave system, it is important passive interface unit in radar equipment, precise guidance and microwave test circuit, also require that it possesses air-tightness, high voltage bearing performance in some occasion (as nuclear power station, Aero-Space etc.), the military coaxial waveguide converter of current most domestic is non-tight product, cannot meet the requirement of broadband and hermetic seal simultaneously.

Summary of the invention

The object of the invention is to overcome technical deficiency, a kind of broadband coaxial waveguide converter of hermetic seal is provided, this structure is the sealing adopting glass sintering integrative-structure to ensure seal combination housing, and seal combination housing and waveguide are by welding the sealing ensureing whole coaxial waveguide converter.

Technical scheme of the present invention is:

A kind of wide band coaxial waveguide converter of hermetic seal, comprise insulator 1, shell 2, jack 3, glass dust 4, probe 5, sleeve 6 and waveguide 7, bottom described shell 2 linking probe 5 one end and seal composition seal combination housing with glass dust 4, insulator 1 is arranged in shell 2, insulator 1 there is jack 3, the other end branch sleeve 6 of probe 5, probe 5 and sleeve 6 are arranged in waveguide 7, and shell 2 is arranged on the outer wall of waveguide 7.

To be spaced a distance △=0.3mm ~ 0.5mm at the end face of jack 3, insulator 1 and the glass surface of glass dust 4.

Insulator 1 is press-fitted and enters seal combination housing, and jack 3 is press-fitted and enters in insulator 1 hole with the contact pin end of probe 5 to inserting, and the hangnail direction of shell 2 and jack 3 is contrary.

Seal combination housing comprises shell 2, glass dust 4, probe 5.Seal combination housing is glass dust one sintering, the iron nickel cobalt glass sealing alloy (kovar alloy that shell and internal conductor material all select temperature expansion coefficient little, the coefficient of expansion of this material within the scope of room temperature to 300 DEG C is close with glass, sealing-in place will be caused to ftracture because of variations in temperature).

Because the plane of glass sintering can not be very concordant, often occur that glass exceeds shell end face and glass and to climb along inner wire the phenomenon of a segment distance, jack and insulator in the process of assembling is avoided to be expressed to glass surface and glass seal is destroyed, to be spaced a distance △ with glass surface, about 0.3mm ~ 0.5mm, can play good effect, inner conductors diameter is undergone mutation and is played the effect of performance compensation simultaneously.

Probe tip adds sleeve, and its advantage is: insertion loss is low, has larger bandwidth of operation, the radius of regulating sleeve and height, just can regulate the bandwidth of its energy be coupled and work, and its effect is equivalent to an antenna loaded.

Insulator hangnail is press-fitted and enters seal combination housing, and jack is press-fitted and enters in insulation sub-aperture with the contact pin end of probe to inserting, and in shell and jack, the two hangnail direction is contrary, mutually restricting, preventing product because being subject to the environmental factor such as temperature shock, vibration generation play.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the wide band coaxial waveguide converter structure of hermetic seal

Internal structure schematic diagram when Fig. 2 is seal combination housing sintering

Fig. 3 is two rightabout hangnail schematic diagrames of shell and jack

Fig. 4 is tube-in-tube structure schematic diagram

Reference numeral

1 insulator 2 shell 3 jack 4 glass dust 5 probe 6 sleeve 7 waveguide

Embodiment

Below in conjunction with accompanying drawing 1, the specific embodiment of the present invention is described:

The wide band waveguide coaxial converter of hermetic seal primarily of a seal combination housing, jack 3, insulator 1, waveguide 7, sleeve 6.Wherein seal combination housing comprises shell 2, glass dust 4, probe 5.

Seal combination housing is sintered formed by shell 2, glass dust 4, probe 5 glass melting.In order to prevent glass dust from climbing along inner wire or along outer casing inner wall, on the one hand during optimal design, making glass interface and between insulator and jack, reserving certain gap △, adopt positioning tool location sintering in addition, prevent glass dust from climbing.

Insulator is press-fitted and enters seal casinghousing, and jack is press-fitted and enters in insulation sub-aperture, is connected, encloses jack and be connected with waveguide by screw thread with the seal combination housing of insulator with probe one end to slotting, prepares debugging high frequency performance.

In order to obtain lower loss and voltage standing wave ratio, when regulating properties of product, changing radius and the height of sleeve, being adjusted to certain position, sleeve being soldered on probe fixing.

The debugging of product high frequency performance is complete, and prevent screw thread place from leaking gas, the screw thread place of shell and waveguide ensures hermetic seal and resistance to pressure by soldering.

Claims

1. the wide band coaxial waveguide converter of a hermetic seal, comprise insulator (1), shell (2), jack (3), glass dust (4), probe (5), sleeve (6) and waveguide (7), it is characterized in that, one end of described shell (2) bottom linking probe (5) with glass dust (4) sealing composition seal combination housing, insulator (1) is arranged in shell (2), insulator (1) there is jack (3), the other end branch sleeve (6) of probe (5), probe (5) and sleeve (6) are arranged in waveguide (7), shell (2) is arranged on the outer wall of waveguide (7).

2. the wide band waveguide coaxial converter of a kind of hermetic seal according to claim 1, is characterized in that: to be spaced a distance △=0.3mm ~ 0.5mm at the end face of jack (3), insulator (1) and the glass surface of glass dust (4).

3. the wide band waveguide coaxial converter of a kind of hermetic seal according to claim 1, it is characterized in that: insulator (1) is press-fitted and enters seal combination housing, jack (3) is press-fitted and enters in insulator (1) hole with the contact pin end of probe (5) to inserting, and the hangnail direction of shell (2) and jack (3) is contrary.