CN203013888U

CN203013888U - Microwave frequency selection assembly

Info

Publication number: CN203013888U
Application number: CN 201220735102
Authority: CN
Inventors: 赵曦
Original assignee: CHENGDU YAGUANG ELECTRONIC Co Ltd
Current assignee: CHENGDU YAGUANG ELECTRONIC Co Ltd
Priority date: 2012-12-27
Filing date: 2012-12-27
Publication date: 2013-06-19
Anticipated expiration: 2022-12-27

Abstract

The utility model discloses a microwave frequency selection assembly comprising switches and filters. The switches are two single-pole four-throw switches, and the filters are three dielectric filters. The two single-pole four-throw switches are respectively connected with an input end and an output end, and the three dielectric filters are parallely connected between the two single-pole four-throw switches. Outer parts of the single-pole four-throw switches and outer parts of the dielectric filters are provided with a housing in a sealed manner. The utility model is advantageous in that because the dielectric filters are adopted, the insertion loss is small, the out-of-band rejection is high, and the use in a wide temperature range can be guaranteed; because the serial/parallel connection type single-pole four-throw switches are adopted, and the sizes of the components can be effectively reduced.

Description

A kind of microwave frequency-selecting assembly

Technical field

The utility model belongs to the communication equipment technical field, is specially a kind of microwave frequency-selecting assembly.

Background technology

In order to realize the multichannel frequency-selecting, microwave frequency-selecting assembly is applied to the every field such as space flight, radar and communication more and more widely.Microwave current frequency-selecting assembly comprises switch and filter substantially.Filter can be selected cavity body filter, microstrip filter, LC filter.Although if select cavity body filter directly to be connected with little band by coaxial input and output, realize the circuit complanation, in the junction of coaxial and little band, larger electromagnetic exposure arranged.Although if select the microstrip filter electromagnetic exposure little, because little band is semi-open structure, so in same band under Insertion Loss, Out-of-band rejection is lower.If select the LC filter, in-45 ℃～+ 85 ℃ full temperature scopes, temperature characterisitic is difficult to guarantee.In addition, existing microwave frequency-selecting assembly also has following deficiency: small product size is large, Heavy Weight, can't seal, so that reliability is low; The mutual interference problem of interchannel easily occurs between adjacent nearer frequency band, can't guarantee the consistency of product; Be difficult to guarantee temperature drift characteristic; The shutoff isolation is not high enough, and the shutoff effect is bad.

The utility model content

In view of this, the utility model provides a kind of volume little, and insertion loss is little, Out-of-band rejection is high and the microwave frequency-selecting assembly that can use at wide temperature range.

For solving above technical problem, the technical solution of the utility model is, a kind of microwave frequency-selecting assembly comprises switch and filter, and described switch is two hilted broadsword four throw switches, and described filter is three dielectric filters; Wherein, two hilted broadsword four throw switches connect respectively input and output, and three filters are connected in parallel between two hilted broadsword four throw switches; The outside seal of described hilted broadsword four throw switches and dielectric filter is provided with box body; Described input and output stretch out from the left and right sides of box body respectively, and the side of box body also is provided with four control ends with the hilted broadsword four corresponding connections of throw switch, are used for selecting from the outside break-make of control hilted broadsword four throw switches.

Further, the control device of described hilted broadsword four throw switches is PIN diode, and adopts series parallel structure.

Further, in the series parallel structure of described PIN diode, be provided with partition wall between switch Lu Yulu.

Further, the series connection tube core of described PIN diode adopts the MPN7310-C12 tube core, and the series connection tube core adopts the MADP00165-134 tube core.

Further, described box body adopts the rustproof aluminum alloy metal.

Further, described input and output all adopt glass insulator.

Further, described dielectric filter is sintered to fix in the inner chamber of box body by low-temperature alloy.

Further, described box body is externally coated with anticorrosive coat.

Compared with prior art, the beneficial effects of the utility model are, so because the utility model has adopted that the dielectric filter insertion loss is little, Out-of-band rejection is high, used in wide temperature range and can be protected.And the utility model adopts Serial-Parallel Type hilted broadsword four throw switches effectively to reduce the volume of assembly.

In additional technical feature, because hilted broadsword four throw switches are series parallel structure, be provided with partition wall between each switch Lu Yulu simultaneously, so in minification, also satisfied the demand of interchannel high-isolation.

In addition, in additional technical feature, the box body that is arranged on dielectric filter and hilted broadsword four throw switch outsides is adopted the rustproof aluminum alloy metal material, simultaneously dielectric filter is sintered to fix in the inner chamber of box body by low-temperature alloy, can alleviate the weight of assembly on the one hand, reduce on the other hand the volume of assembly.

At last, in additional technical feature, with the anticorrosive coat that is externally coated with of box body, be in order to satisfy the demand of the utility model under special environment.

Description of drawings

Fig. 1 is the utility model internal structure schematic diagram;

Fig. 2 is the utility model external structure schematic diagram;

Fig. 3 is the left view of Fig. 2;

Fig. 4 is the right view of Fig. 2.

Embodiment

In order to make those skilled in the art understand better the technical solution of the utility model, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Referring to Fig. 1 and Fig. 2, the utility model is a kind of microwave frequency-selecting assembly, is comprised of two hilted broadswords, four throw switches 1 and three dielectric filters 2.The outside seal of hilted broadsword four throw switches 1 and dielectric filter 2 is provided with box body 3.Wherein, two hilted broadsword four throw switches 1 connect respectively input J1 and output J2, and three filters are connected in parallel between two hilted broadswords, four throw switches 1.Input J1 and output J2 stretch out from the left and right sides of box body 3 respectively, are used for being connected with external equipment.The right side that box body 3 is provided with output J2 also is provided with four control end C1-C4, these four control end C1-C4 are respectively at the hilted broadsword four corresponding connections of throw switch 1, be used for selecting to control the break-make of hilted broadsword four throw switches 1, make the utility model can select 3 channels that require bandwidth from different frequency ranges.

In the utility model, the control device of hilted broadsword four throw switches 1 is selected PIN diode, and adopts series parallel structure.Wherein, the series connection tube core of PIN diode adopts the MPN7310-C12 tube core, and the series connection tube core adopts the MADP00165-134 tube core.Simultaneously, be provided with partition wall between switch Lu Yulu.Its purpose is, traditional mode that powers up generally adopts higher temperature line, because assembly is higher for isolation and coherence request, so the utility model adopts the mode that powers up of multistage LC feed, can shorten as much as possible higher temperature line length, and the distance between the increasing higher temperature line, avoid signal to reveal by higher temperature line with this, thereby affect electrical performance indexes.

In the utility model, box body 3 has adopted the material of rustproof aluminum alloy metal to seal.Dielectric filter 2 in box body 3 inner chambers adopts low-temperature alloy to be sintered to fix on cavity,, can also alleviate assembly weight, reduce device size when removing installing hole with this, increases the reliability of assembly.Input J1 of the present utility model and output J2 all adopt glass insulator, and partially plating gold is adopted in the inner chamber of box body 3 and glass insulator sintering hole, with 220 ℃ of alloy sinterings to guarantee good conductivity and sealing.If due to the carrier-borne use of the utility model, need to possess anti-salt fog, mould proof needs.So in the utility model, box body 3 employing rustproof aluminum alloy metals are raw material, adopt laser welded seam to guarantee its sealing.The utility model is also at the anticorrosive coat that is externally coated with of box body 3, to reach further raising the utility model moisture-proof, anti-salt fog, mould proof performance.This anticorrosive coat adopts 823 impregnating fluids.

Be below only preferred implementation of the present utility model, should be pointed out that above-mentioned preferred implementation should not be considered as restriction of the present utility model, protection range of the present utility model should be as the criterion with the claim limited range.For those skilled in the art, within not breaking away from spirit and scope of the present utility model, can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.

Claims

1. a microwave frequency-selecting assembly, comprise switch and filter, it is characterized in that: described switch is two hilted broadsword four throw switches, and described filter is three dielectric filters; Wherein, two hilted broadsword four throw switches connect respectively input and output, and three filters are connected in parallel between two hilted broadsword four throw switches; The outside seal of described hilted broadsword four throw switches and dielectric filter is provided with box body; Described input and output stretch out from the left and right sides of box body respectively, and the side of box body also is provided with four control ends with the hilted broadsword four corresponding connections of throw switch, and these four control ends are used for selecting from the outside break-make of control hilted broadsword four throw switches.

2. microwave frequency-selecting assembly as claimed in claim 1, it is characterized in that: the control device of described hilted broadsword four throw switches is PIN diode, and adopts series parallel structure.

3. microwave frequency-selecting assembly as claimed in claim 2, is characterized in that: in the series parallel structure of described PIN diode, be provided with partition wall between switch Lu Yulu.

4. microwave frequency-selecting assembly as claimed in claim 3, is characterized in that: the series connection tube core employing MPN7310-C12 tube core of described PIN diode, series connection tube core employing MADP00165-134 tube core.

5. microwave frequency-selecting assembly as claimed in claim 1, is characterized in that: described box body employing rustproof aluminum alloy metal.

6. microwave frequency-selecting assembly as claimed in claim 1, it is characterized in that: described input and output all adopt glass insulator.

7. microwave frequency-selecting assembly as claimed in claim 1, it is characterized in that: described dielectric filter is sintered to fix in the inner chamber of box body by low-temperature alloy.

8. microwave frequency-selecting assembly as claimed in claim 1 is characterized in that: described box body be externally coated with anticorrosive coat.