CN207910051U - A kind of 450MHz miniaturizations whip antenna - Google Patents

Abstract

The utility model discloses a kind of 450MHz to minimize whip antenna,Including lower chokes radiant tube,The lower chokes radiant tube top is provided with big connector,And lower chokes radiant tube bottom end is connected with RF cable,Fixed heat-shrink tube is installed above the big connector,And fixed heat-shrink tube top is connected with spring radiating doublet,The upper spring radiating doublet bottom end is provided with small connector,And big connector is installed below small connector,The lower chokes radiant tube is internally provided with coated by dielectric pvc pipe,And coated by dielectric pvc pipe is internally connected with internal protection layer,It is reasonable for structure that internal core wire conductor 450MHz miniaturization whip antennas are enclosed with inside the internal protection layer,Antenna performance is good,Meet the requirement of handheld terminal antenna size miniaturization,And it is simple for structure,Just it is mounted in the whip antenna cover of various types of shape,It is convenient for production,Manufacturing cost is low,It can be widely used in various 450MHz hand-held wireless communication terminals equipment simultaneously.

Description

A kind of 450MHz miniaturizations whip antenna

Technical field

The utility model is related to communication device technology field, specially a kind of 450MHz minimizes whip antenna.

Background technology

450MHz miniaturization whip antennas are a with high-performance, the 450MHz terminal antennas of miniaturization, its bandwidth of operation 300MHz ~ 470MHz frequency ranges are covered, are work in the 300MHz-470MHz for wirelessly communicating uhf band increasingly extensive, therein Industry network communication, private network cluster communication, handheld device increasingly minimizes with advances in technology, and QoS requirement is more next More high request signal radiation number is strong, wide coverage.

Existing 450MHz miniaturization handheld terminal antennas are using rich quarter-wave monopole designs, though it can meet Still its antenna radiation performance is poor, anti-interference ability is weak for miniaturization, and radio-frequency transmission line does not obtain shielding very well so that cable ginseng With radiation and influenced the input impedance of directional diagram and antenna, and terminal radio frequency output can be interfered or carried on the back interference so as to cause A series of problems, such as antenna one is straightforward poor, communications network service drop rate is high, signal is weak.

Invention content

The purpose of this utility model is to provide a kind of 450MHz to minimize whip antenna, to solve to carry in above-mentioned background technology The existing 450MHz miniaturization handheld terminal antennas gone out are using rich quarter-wave monopole designs, though it can meet small-sized Still its antenna radiation performance is poor, anti-interference ability is weak for change, and radio-frequency transmission line does not obtain shielding very well so that cable participation spoke The problem of penetrating and having influenced the input impedance of directional diagram and antenna.

To achieve the above object, the utility model provides the following technical solutions：A kind of 450MHz miniaturizations whip antenna, including Lower chokes radiant tube, the lower chokes radiant tube top is provided with big connector, and lower chokes radiant tube bottom end is connected with radio frequency Cable, the big connector top is equipped with fixed heat-shrink tube, and fixed heat-shrink tube top is connected with spring radiating doublet, institute It states spring radiating doublet bottom end and is provided with small connector, and big connector, the lower chokes spoke are installed below small connector It penetrates pipe and is internally provided with coated by dielectric pvc pipe, and coated by dielectric pvc pipe is internally connected with internal protection layer, the internal protection Layer is internal to be enclosed with internal core wire conductor.

Preferably, coated by dielectric pvc pipe is equipped in the lower chokes radiant tube, and coated by dielectric pvc pipe is by connecting greatly Device is connected with RF cable outer layer metal conductor crimping.

Preferably, the upper spring radiating doublet is fixedly connected by fixed heat-shrink tube with small connector composition, and upper bullet Spring radiating doublet is spring structure.

Preferably, the RF cable outer contact constitutes fixed structure by big connector and lower chokes radiant tube, and Internal core wire conductor is to be fixedly connected with upper spring radiating doublet by small connector.

Preferably, even point connects that be all made of pneumatic compression joint technology complete for each component conductor electrical inside and outside the lower chokes radiant tube At connection.

Compared with prior art, the utility model has the beneficial effects that：450MHz miniaturization whip antennas are reasonable for structure, day Line is functional, meets the requirement of handheld terminal antenna size miniaturization, and whip that is simple for structure, being just mounted on various types of shape Shape antenna house is interior, convenient for production, manufacturing cost is low, while can be widely used in various 450MHz hand-held wireless communication terminals and set It is standby upper.The 450MHz, which minimizes whip antenna and adopts spring structure equipped with upper radiating doublet, can effectively reduce antenna size, and under Radiating doublet uses the copper tube design with chokes effect, while built-in filling PCV high-k pipes reduce lower radiation and shake Sub- size, in addition the metal electric connecting point of each component part of antenna be all made of electrical crimp technology and complete, have contact it is good Feature good, producing efficiency is high.

Description of the drawings

FIG. 1 is a schematic structural view of the utility model；

Fig. 2 is the utility model internal structure schematic diagram.

In figure：1, lower chokes radiant tube, 2, upper spring radiating doublet, 3, big connector, 4, coated by dielectric pvc pipe, 5, penetrate Frequency cable, 6, small connector, 7, fixed heat-shrink tube, 8, internal protection layer, 9, internal core wire conductor.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work The every other embodiment obtained, shall fall within the protection scope of the present invention.

- 2 are please referred to Fig.1, the utility model provides a kind of technical solution：A kind of 450MHz miniaturizations whip antenna, including under Chokes radiant tube 1, lower 1 top of chokes radiant tube is provided with big connector 3, and lower 1 bottom end of chokes radiant tube is connected with radio frequency line Cable 5, lower chokes radiant tube 1 is interior to be equipped with coated by dielectric pvc pipe 4, and coated by dielectric pvc pipe 4 passes through big connector 3 and RF cable 5 outer layer metal conductor crimpings are connected, this structure ensures to realize the Miniaturization Design of antenna while antenna radiation performance demand It plays a key effect, 5 outer contact of RF cable constitutes fixed structure, and inner core by big connector 3 and lower chokes radiant tube 1 Line conductor 9 is to be fixedly connected with upper spring radiating doublet 2 by small connector 6, and radiating doublet, which uses, under this structure has chokes The copper tube design of effect, built-in filling PCV high-k pipes reduce lower radiating doublet size, inside and outside lower chokes radiant tube 1 Each component conductor electrical even point connect be all made of pneumatic compression joint technology complete connection, each component part of antenna of this inside configuration Metal electric connecting point be all made of electrical crimp technology and complete, have the characteristics that contact well, producing efficiency it is high, big connector 3 tops are equipped with fixed heat-shrink tube 7, and 7 top of fixed heat-shrink tube is connected with spring radiating doublet 2, upper spring radiating doublet 2 Bottom end is provided with small connector 6, and 6 lower section of small connector is equipped with big connector 3, and upper spring radiating doublet 2 passes through fixed heat The draw 7 is fixedly connected with the composition of small connector 6, and upper spring radiating doublet 2 is spring structure.Radiating doublet 2 is adopted in this structure Antenna size can be effectively reduced with spring structure, lower chokes radiant tube 1 is internally provided with coated by dielectric pvc pipe 4, and medium adds It carries pvc pipe 4 and is internally connected with internal protection layer 8, internal core wire conductor 9 is enclosed with inside internal protection layer 8.

Operation principle：When minimizing whip antenna using the 450MHz, descends be equipped with coated by dielectric in chokes radiant tube 1 first Pvc pipe 4, while coated by dielectric pvc pipe 4 being connected by big connector 3 with 5 outer layer metal conductor crimping of RF cable, then Upper spring radiating doublet 2 is fixedly connected by fixed heat-shrink tube 7 with the composition of small connector 6, while the upper of spring structure being installed Spring radiating doublet 2,5 outer contact of subsequent RF cable constitute fixed structure by big connector 3 and lower chokes radiant tube 1, And it is to be fixedly connected with upper spring radiating doublet 2 by small connector 6 by internal core wire conductor 9, is checking whether the device is complete Good or whether there is or not breakages, the device can be begun to use by such as all going well because upper radiating doublet 2 using spring structure, under grip Stream radiant tube 1 sets coated by dielectric pvc pipe 4 in using, and ensures to realize while antenna radiation performance demand by the two designs The Miniaturization Design of antenna plays a key effect, to complete a series of activities.

Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art is come Say, still can with technical scheme described in the above embodiments is modified, or to which part technical characteristic into Row equivalent replacement, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all It is included within the scope of protection of this utility model.

Claims (5)

1. a kind of 450MHz minimizes whip antenna, including lower chokes radiant tube（1）, it is characterised in that：The lower chokes radiant tube （1）Top is provided with big connector（3）, and lower chokes radiant tube（1）Bottom end is connected with RF cable（5）, the big connector （3）Top is equipped with fixed heat-shrink tube（7）, and fixed heat-shrink tube（7）Top is connected with spring radiating doublet（2）, it is described on Spring radiating doublet（2）Bottom end is provided with small connector（6）, and small connector（6）Lower section is equipped with big connector（3）, described Lower chokes radiant tube（1）It is internally provided with coated by dielectric pvc pipe（4）, and coated by dielectric pvc pipe（4）It is internally connected with internal guarantor Sheath（8）, the internal protection layer（8）Inside is enclosed with internal core wire conductor（9）.

2. a kind of 450MHz according to claim 1 minimizes whip antenna, it is characterised in that：The lower chokes radiant tube （1）It is interior to be equipped with coated by dielectric pvc pipe（4）, and coated by dielectric pvc pipe（4）Pass through big connector（3）With RF cable（5）Outer layer Metallic conductor crimping is connected.

3. a kind of 450MHz according to claim 1 minimizes whip antenna, it is characterised in that：The upper spring radiating doublet （2）Pass through fixed heat-shrink tube（7）With small connector（6）Composition is fixedly connected, and upper spring radiating doublet（2）For spring structure.

4. a kind of 450MHz according to claim 1 minimizes whip antenna, it is characterised in that：The RF cable（5）Outside Layer conductor passes through big connector（3）With lower chokes radiant tube（1）Constitute fixed structure, and internal core wire conductor（9）Pass through small connection Device（6）With upper spring radiating doublet（2）To be fixedly connected.

5. a kind of 450MHz according to claim 2,3 or 4 minimizes whip antenna, it is characterised in that：The lower chokes Radiant tube（1）Inside and outside each component conductor electrical company point, which connects, is all made of the completion connection of pneumatic compression joint technology.