CN202167597U

CN202167597U - High-power coaxial fixed attenuator

Info

Publication number: CN202167597U
Application number: CN2011201924210U
Authority: CN
Inventors: 周敏; 周俊孟; 戴林华
Original assignee: SHANGHAI HUAXIANG COMPUTER COMMUNICATION ENGINEERING Co Ltd
Current assignee: SHANGHAI HUAXIANG COMPUTER COMMUNICATION ENGINEERING Co Ltd
Priority date: 2011-06-09
Filing date: 2011-06-09
Publication date: 2012-03-14
Anticipated expiration: 2021-06-09

Abstract

The utility model discloses a high-power coaxial fixed attenuator, mainly comprising an SMA female connector, an SMA male connector and an attenuator cavity, wherein the cavity comprises a radiator, two housings, two core chambers, two attenuation sheets, a grounding clamp and a connecting body, the male connector comprises a thread sleeve, a clasp, a male housing, an insulator, a male internal conductor, a spring and a contact cap, the female connector comprises a female housing, a female internal conductor, an insulator, a spring and a contact cap, and the connecting body comprises an internal conductor, a connecting housing, an insulator, a spring and a contact cap. In the high-power coaxial fixed attenuator, novel metal oxide is adopted to serve as a substrate and an advanced resistor technology is adopted, so power density of the attenuator is high, and resistance value of the attenuator is stable. With the optimized card-type attenuation sheets, the attenuator reaches the requirements of small standing waves and wide frequency bands. Work frequency band scope of the attenuator is from direct current to 26.5GHa, and power capacity of the attenuator is 50W. The attenuator is good and rapid in heat radiation, strong in anti-burning capability, good in mechanical stability and good in repeatability.

Description

A kind of high-power coaxial fixed attenuator

Technical field

The utility model relates to the microwave passive component field, relates in particular to a kind of at the microwave coaxial fixed attenuator that in letter industry and electronic equipment and radar, uses.

Background technology

Coaxial fixed attentuator is a kind of of microwave component; Be widely used in the equipment such as microwave communication, radar; Coaxial fixed attentuator must satisfy the electric of system and mechanical performance requirement, will accomplish in batch process that simultaneously technology is simple, qualification rate is high, production cost is low.Coaxial fixed attentuator is made up of connector and attenuator, and connector comprises famale connector and male contact two parts.Generally; The coaxial fixed attentuator of accomplishing the DC-26.5GHz high frequency is very difficult; The T type thick film circuit attenuator that will adopt alumina ceramic substrate to make equally will be made the DC-26.5GHz high frequency and can bear simultaneously just difficulty more of powerful coaxial fixed attentuator.

In sum, to the defective of prior art, need a kind of high-power coaxial fixed attenuator especially, to solve the deficiency of prior art.

The utility model content

The purpose of the utility model is to provide a kind of high-power coaxial fixed attenuator multi-disc attenuator series connection and strengthens the power that area of dissipation improves attenuator, thereby realizes the purpose of the utility model.

The technical problem that the utility model solved can adopt following technical scheme to realize:

A kind of high-power coaxial fixed attenuator is characterized in that, said high-power coaxial fixed attenuator is made up of cavity, male contact and famale connector three parts; Cavity is made up of radiator, two shells, two core chambeies, two attenuators, earth clip, disjunctors; Male contact comprises swivel nut, snap ring, positive shell, insulator, positive inner wire, spring, contact cap; Famale connector comprises cloudy shell, cloudy inner wire, insulator, spring, contact cap composition; Disjunctor comprises disjunctor inner wire, conjoined outer shell, insulator, spring, contact cap.

In an embodiment of the utility model, the both sides ground connection microstrip line of said two attenuators with earth clip block tightly be fixed on its groove with the core chamber of width in, through shell they are installed between male contact and disjunctor, famale connector and the disjunctor respectively.

In an embodiment of the utility model, the Elastic Contact crown in said positive inner wire and the hole thereof is lived the microstrip transmission line input of attenuator, and the microstrip transmission line output is lived by the Elastic Contact crown in the disjunctor inner wire hole; The Elastic Contact crown of the disjunctor inner wire other end is lived the microstrip transmission line input of attenuator, and the microstrip transmission line output of attenuator is lived by the Elastic Contact crown in the cloudy inner wire hole.

In an embodiment of the utility model, it is characterized in that the signal transduction pathway of said high-power coaxial fixed attenuator is positive inner wire-microstrip transmission line-disjunctor inner wire-microstrip line-cloudy inner wire; Five of center lines in the microstrip transmission line of two attenuators, positive inner wire, disjunctor inner wire and the cloudy inner wire are concentric.

In an embodiment of the utility model; Said attenuator is through processing with thin-film technique high-frequency sputtering tantalum nitride resistance on the beryllium oxide dielectric substrate; Its characteristic impedance is 50 Ω; Frequency is up to 26.5GHz, and power capacity is up to 50W, through adopting the series connection of multi-disc attenuator and strengthening the power that area of dissipation improves attenuator.

The advantage of the utility model is: through the card form attenuator of optimal design, it is little to reach standing wave, the requirement of bandwidth.The product working band is from the direct current to 26.5GHz, and power capacity 50W has well heat-sinking capability fast, and burn-out resistance is strong, good mechanical stability, good reproducibility.

Description of drawings

Fig. 1 is the external structure sketch map of the described a kind of high-power coaxial fixed attenuator of the utility model.

Fig. 2 is the internal structure sketch map of the described a kind of high-power coaxial fixed attenuator of the utility model.

Label declaration among the figure: SMA male contact 1, cavity 2, disjunctor 3, SMA famale connector 4, swivel nut 5, snap ring 6; Sun shell 7, insulator 8, positive inner wire 9, spring 10, contact cap 11, radiator 12; The 13-shell, 14-core chamber, 15-earth clip, 16-attenuator (1), 17-disjunctor inner wire; The 18-conjoined outer shell, 19-insulator, 20-attenuator (2), the cloudy shell of 21-, the cloudy inner wire of 22-.

Embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.

As depicted in figs. 1 and 2, the described a kind of high-power coaxial fixed attenuator of the utility model is made up of SMA famale connector 4 and SMA male contact 1 and cavity 2.Cavity 2 is made up of radiator 12, two shells 13, two core chambeies 14, attenuator (1) 16, attenuator (2) 20, earth clip 15, disjunctors 3.Disjunctor 3 is made up of disjunctor inner wire 17, conjoined outer shell 18, insulator 19, spring 10, contact cap 11.Male contact 1 comprises swivel nut 5, snap ring 6, positive shell 7, insulator 8, positive inner wire 9, spring 10, contact cap 11.Famale connector 3 comprises that cloudy shell 21, cloudy inner wire 22, insulator 8, spring 10, contact cap 11 form.

Referring to Fig. 2; Attenuator (1) 16, attenuator (2) 20 both sides ground connection microstrip lines with earth clip 15 block tightly be fixed on its groove with the core chamber 14 of width in; Through shell 13, make that they are installed between SMA male contact 1 and the disjunctor 3, between disjunctor 3 and the famale connector 4.The realization delivering path is: the Elastic Contact cap 11 in positive inner wire 9 and the hole thereof withstands the microstrip transmission line input of attenuator (1) 16, and the microstrip transmission line output is withstood by the Elastic Contact cap 11 in disjunctor inner wire 17 holes.The Elastic Contact crown of the disjunctor inner wire other end has been lived the microstrip transmission line input of attenuator (2) 20, and the microstrip transmission line output of attenuator (2) 20 is withstood by the Elastic Contact cap 11 in cloudy inner wire 22 holes.Whole signal transduction pathway is exactly: through the Elastic Contact cap from positive inner wire-microstrip transmission line-disjunctor inner wire-microstrip transmission line-cloudy inner wire.Five in the center line of the microstrip transmission line of attenuator and positive inner wire 9 and disjunctor inner wire 17 and the cloudy inner wire 22 with one heart.

Referring to Fig. 2; The ground connection microstrip line on attenuator (1) 16, attenuator (2) 20 both sides has reliably guaranteed and the contacting of core chamber 14 through earth clip 15; Core chamber 14 closely contacts with conjoined outer shell 18 and cloudy shell 21 with positive shell 7, makes attenuator (1) 16 attenuator (2) 20 reliable grounds.

In the utility model when assembling, will be clamped attenuator about in the of (1) 16 on the ground connection microstrip line of both sides with earth clip 15 at present, tightly insert then to make the attenuator reliable ground to be installed in the core chamber 14.Use the same method attenuator (2) 20 is contained in another core chamber 14.Mounting spring 10 and contact cap 11 in positive inner wire 9 holes; Contact cap 11 heads expose positive inner wire 9 hole surfaces during installation; And can with exert pressure with contact cap on; Make it compress into positive inner wire 9 holes, contact cap 11 heads positive inner wire 9 hole surfaces of will appearing again when not having pressure guarantee that contact cap 11 is in the flexible effect of the spring of inside.Use the same method and be installed in the cloudy inner wire hole in two holes with disjunctor inner wire 17 spring 10 and contact cap 11 to be installed.The core chamber 14 that the SMA male contact 1 that contact cap is housed is installed in shell 13 1 ends and attenuator 1 will be housed puts in the shell 13 under, and it is to be installed to load onto disjunctor to be installed 3 at the other end of shell 13.The SMA famale connector 4 of dress contact cap is contained in an end of another shell 13 and attenuator 2 core chambeies will be housed put under in the shell 13, and the shell other end is connected through disjunctor with the cavity of attenuator (1) 16, is installed in the interior completion of radiator then and prepares.

More than show and described basic principle of the utility model and the advantage of principal character and the utility model.The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described, under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications; All in the utility model scope that requires to protect, the utility model requires protection range to be defined by appending claims and equivalent thereof for these variations and improvement.

Claims

1. a high-power coaxial fixed attenuator is characterized in that, said high-power coaxial fixed attenuator is made up of cavity, male contact and famale connector three parts; Cavity is made up of radiator, two shells, two core chambeies, two attenuators, earth clip, disjunctors; Male contact comprises swivel nut, snap ring, positive shell, insulator, positive inner wire, spring, contact cap; Famale connector comprises cloudy shell, cloudy inner wire, insulator, spring, contact cap composition; Disjunctor comprises disjunctor inner wire, conjoined outer shell, insulator, spring, contact cap;

The both sides ground connection microstrip line of said two attenuators with earth clip block tightly be fixed on its groove with the core chamber of width in, through shell they are installed between male contact and disjunctor, famale connector and the disjunctor respectively;

Elastic Contact crown in said positive inner wire and the hole thereof is lived the microstrip transmission line input of attenuator, and the microstrip transmission line output is lived by the Elastic Contact crown in the disjunctor inner wire hole; The Elastic Contact crown of the disjunctor inner wire other end is lived the microstrip transmission line input of attenuator, and the microstrip transmission line output of attenuator is lived by the Elastic Contact crown in the cloudy inner wire hole.

2. a kind of high-power coaxial fixed attenuator as claimed in claim 1 is characterized in that, the signal transduction pathway of said high-power coaxial fixed attenuator is positive inner wire-microstrip transmission line-disjunctor inner wire-microstrip line-cloudy inner wire; Five of center lines in the microstrip transmission line of two attenuators, positive inner wire, disjunctor inner wire and the cloudy inner wire are concentric.

3. a kind of high-power coaxial fixed attenuator as claimed in claim 1; It is characterized in that; Said attenuator is through processing with thin-film technique high-frequency sputtering tantalum nitride resistance on the beryllium oxide dielectric substrate, and its characteristic impedance is 50 Ω, and frequency is up to 26.5GHz; Power capacity is up to 50W, through adopting the series connection of multi-disc attenuator and strengthening the power that area of dissipation improves attenuator.