CN209435351U

CN209435351U - A kind of small-sized integrated circular polarisation KU wave band tuner

Info

Publication number: CN209435351U
Application number: CN201920236869.4U
Authority: CN
Inventors: 徐明森; 叶盛洋; 张宠; 赵立峰; 周星
Original assignee: Zhejiang Shengyang Science & Technology Co Ltd
Current assignee: Zhejiang Shengyang Science & Technology Co Ltd
Priority date: 2019-02-25
Filing date: 2019-02-25
Publication date: 2019-09-24
Anticipated expiration: 2029-02-25

Abstract

The utility model relates to a kind of small-sized integrated circular polarisation KU wave band tuners, including waveguide pipe, waveguide pipe front end to connect feed, and bottom end connects circuit board；Waveguide pipe is hollow tube, has integrally formed ladder-like dielectric polorization piece in inboard wall of tube body, is covered with two microstrip antennas that are symmetrical and being distributed in ladder-like dielectric polorization piece two sides on circuit boards.The utility model structure simplifies, and realizes and receives left-handed (L) and dextrorotation (R) circularly polarised wave, it is ensured that noise coefficient and transimission power are more reliable and more stable, meet product SMT standardization, miniaturization, low cost, the market demand of easy processing.

Description

A kind of small-sized integrated circular polarisation KU wave band tuner

[technical field]

The utility model relates to satellite TV reception technologies, and in particular to a kind of small-sized integrated circular polarisation KU wave band high frequency Head.

[background technique]

Currently, tuner is the reception device applied to satellite radio television signal, and KU wave band tuner is exactly to receive frequency Segment limit is modified and amplifies in 10700MHz to downward signal of satellite between 12750MHz, by faint signal, output 950 The intermediate-freuqncy signal of~2150MHz.Tuner is divided into linear polarization tuner and circular polarisation high frequency, the most common linear polarization tuner, There are two orthogonal polarization probes inside waveguide pipe, respectively reception horizontal (H) and vertical (V) polarized signal, in waveguide pipe Portion there are also the spacer rod that one is played polarization isolation, tuner polarize probe and magnetic field signal direction it is completely the same when, it is high Frequency head received signal is most strong, and the direction deviation in polarization probe and magnetic field is bigger, and tuner received signal is weaker.

Existing KU wave band circular polarisation tuner uses phase shift technology, and specific structure is referring to Fig. 1 Fig. 2, circular polarisation waveguide pipe 10 Structure be that the symmetrical centre that a kind of hollow, inner wall smooth, cross section is circular metal catheter and inside has one to rise The spacer rod 20 of polarization isolation effect, passes across circular waveguide inner wall center for spacer rod 20 and in 30 He of horizontal polarization probe Between vertical polarization probe 40, to keep polarized signal relatively stable.If there is no spacer rod 20 will lead to inside waveguide pipe 10 The electromagnetic wave of horizontal polarization and vertical polarization interferes with each other, and installs dielectric polorization piece 50, dielectric polorization additional inside waveguide pipe 10 Piece and polarization probe (30,40) structure " K " font (such as Fig. 2) in angle of 45 degrees simultaneously reach Phasing, with realize left-handed (L) and Dextrorotation (R) circularly polarised wave.

Generally standard size is made using Teflon (polyester fluorine ethylene) material in dielectric polorization piece 50, according to process flow plus Mounted in 10 inside of waveguide pipe and it is not exposed to polarization probe (30,40), dielectric polorization piece 50 is inserted into angle in practical manufacturing process Degree and depth all have differences, and are unable to ensure complete consistency, will cause signal decaying 1-3d B in this way, due to dielectric polorization The difference of piece 50 and two polarization probe (30,40) longitudinal separations, the gain for also leading to left-handed (L) and dextrorotation (R) is inconsistent, Overall effect is bad,

Therefore, miniaturization, easy processing how are designed and produced, the tuner of stability of characteristics has been that the field is urgently to be solved Technical problem.

[utility model content]

To solve the above problems, the purpose of this utility model is to provide a kind of small-sized integrated circular polarisation KU wave band high frequencies Head, structure simplify, realize receive left-handed (L) and dextrorotation (R) circularly polarised wave, it is ensured that noise coefficient and transimission power is more stable can It leans on, meets product SMT standardization, miniaturization, low cost, the market demand of easy processing.

To achieve the above object, the utility model mainly adopts the following technical scheme that

A kind of small-sized integrated circular polarisation KU wave band tuner, including waveguide pipe, waveguide pipe front end connect feed, bottom end connection Circuit board；Waveguide pipe is hollow tube, has integrally formed ladder-like dielectric polorization piece in inboard wall of tube body, covers on circuit boards There are two microstrip antennas that are symmetrical and being distributed in ladder-like dielectric polorization piece two sides.

The ladder-like dielectric polorization piece was the section piece of guided wave tube hub line, and five ladders are formed on sheet body.

The ladder-like dielectric polorization piece ladder bottom flushes in guided wave bottom of the tube.

The ladder-like dielectric polorization piece is located at waveguide pipe centerline.

The longitudinal height of five ladders of ladder-like dielectric polorization piece is H respectively₁、H₂、H₃、H₄、H₅Be respectively 9mm, 1~ 2mm, 7~9mm, 9-10mm, 8~9mm.

The radical length A of described five ladders of ladder-like dielectric polorization piece₁、A₂、A₃、A₄、A₅Be respectively 2~4mm, 8~ 9mm, 3~4mm, 2~4mm, 1~2mm.

The waveguide pipe bottom outside forms circuit board mounting base, and circuit board is vertical with waveguide pipe.

The microstrip antenna is two T font antennas.

Linear distance between the microstrip antenna and ladder-like dielectric polorization piece is 0.6~1.5mm.

Compared with prior art, the utility model has the following beneficial effects:

The circular polarisation waveguide pipe of the utility model can by die-casting process by stairstepping dielectric polorization piece integral forming, Constitute 90 degree angles with microstrip antenna, form similar " T " font structure, and reach Phasing, with realize reception left-handed (L) and Dextrorotation (R) circularly polarised wave, it is ensured that noise coefficient and transimission power are more reliable and more stable, meet product SMT standardization, and structure is small-sized To change, cost reduces, and it is easy to process, meet the market demand.

[Detailed description of the invention]

Fig. 1 is product diagrammatic cross-section in the prior art；

Fig. 2 is prior art middle probe and spacer rod scheme of installation；

Fig. 3 is the utility model preferred embodiment diagrammatic cross-section；

Fig. 4 is ladder-like polarization piece schematic diagram in the utility model preferred embodiment；

Fig. 5 is the front end face schematic diagram of the utility model preferred embodiment；

Fig. 6 is the utility model preferred embodiment circuit board assembling schematic diagram.

[specific embodiment]

It please refers to shown in Figure of description 3-6, the utility model is a kind of small-sized integrated circular polarisation KU wave band tuner, main The component to be related to includes waveguide pipe 1, and the front end of waveguide pipe 1 connects feed 2, and bottom end forms circuit board mounting base 3, and guided wave Pipe 1 and circuit board mounting base 3 penetrate through.

Waveguide pipe 1 is hollow and inner wall smooth a tube body, and ladder-like pole is formed on the inner wall of waveguide pipe 1 Change piece 4.Ladder-like polarization 4 position of piece is at the position of center line of entire tuner product, and ladder-like polarization piece 4 is a mistake The section piece of 1 center line of waveguide pipe, there are five ladders 41 for formation thereon, and the bottom of ladder-like polarization piece 4 is to be encased in lead inwardly The bottom end of wave duct 1, and concordant with 1 bottom end of waveguide pipe, five ladders 41 are towards 2 direction of feed.

34~39mm of ladder-like 4 entire length of polarization piece requirement, about 2/3rds length of waveguide pipe in the present embodiment, five The longitudinal height of a ladder 41 is H respectively₁、H₂、H₃、H₄、H₅It is 9mm, 1~2mm, 7~9mm, 9-10mm, 8~9mm respectively.Five The radical length A of ladder 41₁、A₂、A₃、A₄、A₅It is 2~4mm, 8~9mm, 3~4mm, 2~4mm, 1~2mm respectively.

Circuit board 5 is mounted in circuit board mounting base 3, with waveguide pipe 1 at plumbness.Two are integrated on circuit board 5 Microstrip antenna 6, two microstrip antennas are formed in the annular ring on circuit board, and head is inside, are formed similar T-shaped.Peace Two microstrip antennas 6 are symmetrically distributed in ladder-like 4 two sides of polarization piece when dress, the head of microstrip antenna 6 and keep certain distance, and one As be 0.6~1.5mm.Ladder-like polarization piece 4 is vertical with two microstrip antennas 6, at an angle of 90.

The ladder-like polarization piece 4 and microstrip antenna 6 of waveguide pipe 1 constitute " T " font of 90 degree of angles and reach Phasing, Left-handed (L) and dextrorotation (R) circularly polarised wave is received to realize, it is ensured that noise coefficient and transimission power are more reliable and more stable, meet and produce Product SMT standardization, miniaturization, low cost, the market demand of easy processing.

Above specific embodiment is only the preferred embodiment of this creation, all in this wound not to limit this creation Any modification, equivalent substitution, improvement and etc. done within the spirit and principle of work, should be included in this creation protection scope it It is interior.

Claims

1. a kind of small-sized integrated circular polarisation KU wave band tuner, it is characterised in that: including waveguide pipe, the connection feedback of waveguide pipe front end Source, bottom end connect circuit board；Waveguide pipe is hollow tube, has integrally formed ladder-like dielectric polorization piece in inboard wall of tube body, It is covered with two microstrip antennas that are symmetrical and being distributed in ladder-like dielectric polorization piece two sides on circuit boards.

2. a kind of small-sized integrated circular polarisation KU wave band tuner as described in claim 1, it is characterised in that: described is ladder-like Dielectric polorization piece was the section piece of guided wave tube hub line, and five ladders are formed on sheet body.

3. a kind of small-sized integrated circular polarisation KU wave band tuner as described in claim 1, it is characterised in that: described is ladder-like Dielectric polorization piece ladder bottom flushes in guided wave bottom of the tube.

4. a kind of small-sized integrated circular polarisation KU wave band tuner as described in claim 1, it is characterised in that: described is ladder-like Dielectric polorization piece is located at waveguide pipe centerline.

5. a kind of small-sized integrated circular polarisation KU wave band tuner as described in claim 1, it is characterised in that: described is ladder-like The longitudinal height of five ladders of dielectric polorization piece is H respectively₁、H₂、H₃、H₄、H₅It is 9mm, 1~2mm, 7~9mm, 9-10mm, 8 respectively ~9mm.

6. a kind of small-sized integrated circular polarisation KU wave band tuner as described in claim 1, it is characterised in that: described is ladder-like The radical length A of five ladders of dielectric polorization piece₁、A₂、A₃、A₄、A₅Be respectively 2~4mm, 8~9mm, 3~4mm, 2~4mm, 1~ 2mm。

7. a kind of small-sized integrated circular polarisation KU wave band tuner as described in claim 1, it is characterised in that: the waveguide pipe Bottom outside forms circuit board mounting base, and circuit board is vertical with waveguide pipe.

8. a kind of small-sized integrated circular polarisation KU wave band tuner as described in claim 1, it is characterised in that: the micro-strip day Line is two T font antennas.

9. a kind of small-sized integrated circular polarisation KU wave band tuner as described in claim 1, it is characterised in that: the micro-strip day Linear distance between line and ladder-like dielectric polorization piece is 0.6~1.5mm.