CN201708250U

CN201708250U - Dipole antenna assembly

Info

Publication number: CN201708250U
Application number: CN2010201871331U
Authority: CN
Inventors: 张胜哲; 林长青; 曾俊杰; 侯云程; 周铭璋
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2010-05-12
Filing date: 2010-05-12
Publication date: 2011-01-12
Anticipated expiration: 2020-05-12

Abstract

A dipole antenna assembly comprises a dipole antenna and a coaxial feeder connected with the dipole antenna, wherein the dipole antenna includes a radiation part and a grounding part, the coaxial feeder includes a central lead, an insulating layer covering the central lead and a shield braid layer covering the insulating layer, the central lead is welded on the radiation part, the shield braid layer is welded on the grounding part, the dipole antenna is further provided with a conductive loop for impedance matching, and the conductive loop is connected from the welding position of the central lead with the radiation part to the welding position of the shield braid layer with the grounding part. When being applied to built-in antennas, the dipole antenna assembly in the design is less susceptible to field patterns, and has shallower blind spots and a rounder radiation field.

Description

The dipole antenna assembly

[technical field]

The utility model relates to a kind of dipole antenna assembly, especially about improving the design of in-building type dipole antenna assembly field shape performance.

[background technology]

United States Patent (USP) is announced US7564423 number and has been disclosed a kind of dipole antenna assembly, this dipole antenna assembly comprises dipole antenna and the coaxial feeder that is connected with dipole antenna, described dipole antenna comprises substrate, is arranged on Department of Radiation and grounding parts on the substrate, described coaxial feeder comprises center conductor, the insulating barrier that coats center conductor and the screening braid of coated insulation layer, described center conductor is welded on the Department of Radiation, and described screening braid is welded on the grounding parts.Described center conductor also is connected with a short circuit galvanic circle, and this short circuit galvanic circle comprises the connecting portion that is arranged on the conducting wire on opposite two sides of substrate and runs through substrate.

[utility model content]

Technical problem to be solved in the utility model is: a kind of dipole antenna assembly is provided, and its shape is susceptible to not, and blind spot is more shallow, and radiation field shape is round.

For addressing the above problem, the utility model provides a kind of dipole antenna assembly, it comprises dipole antenna and the coaxial feeder that is connected with dipole antenna, described dipole antenna comprises Department of Radiation and grounding parts, described coaxial feeder comprises center conductor, coat the insulating barrier of center conductor and the screening braid of coated insulation layer, described center conductor is welded on the Department of Radiation, described screening braid is welded on the grounding parts, described dipole antenna assembly also is provided with the galvanic circle that can play impedance matching, and described galvanic circle is connected to the weld of shielding organization level and grounding parts from the weld of center conductor and Department of Radiation.

Compared to prior art, the galvanic circle of the risen impedance matching effect in the dipole antenna assembly of the present utility model is connected to the weld of screening braid and grounding parts from the weld of center conductor and Department of Radiation, be different from prior art constructions, and its shape susceptible to not after tested, blind spot is more shallow, and radiation field shape is round.

[description of drawings]

Fig. 1 is the stereogram of the utility model dipole antenna assembly first embodiment.

Fig. 2 is the exploded view of dipole antenna assembly shown in Figure 1.

Fig. 3 is the stereogram of the utility model dipole antenna assembly second embodiment.

Fig. 4 is the exploded view of dipole antenna assembly shown in Figure 3.

Fig. 5 is the voltage standing wave ratio variation diagram of dipole antenna shown in Figure 3 in the 2-3GHz frequency range.

Fig. 6 is the return loss variation diagram of dipole antenna shown in Figure 3 in the 2-3GHz frequency range.

[embodiment]

Shown in Fig. 1 to 2, the utility model first embodiment dipole antenna assembly 100 comprises dipole antenna 10 and the coaxial cable 20 that is connected with dipole antenna 10.

Described dipole antenna 10 comprises substrate 11, is arranged on Department of Radiation 12, grounding parts 13 and galvanic circle 14 on the substrate, and described Department of Radiation 12, grounding parts 13 and galvanic circle 14 are arranged on the same side of substrate 11.

Described Department of Radiation 12 comprises first Department of Radiation 121, and second Department of Radiation 122 of radiation-curable second frequency of radiation-curable first frequency.Described Department of Radiation 12 comprises the first of extending along first direction, first Department of Radiation 121 is connected with an end of first and to extending perpendicular to first direction, second Department of Radiation 122 is connected the place, centre position of first and is parallel to first Department of Radiation 121 and extends, described second Department of Radiation 122 and first Department of Radiation 121 extend in the same way, described first Department of Radiation 121 and second Department of Radiation, the 122 common second portions that constitute Department of Radiation 12.Described grounding parts 13 comprises first grounding parts 131 corresponding with first Department of Radiation 121, and second grounding parts 132 corresponding with second Department of Radiation 122.Described grounding parts 13 comprises the third part parallel with the first of Department of Radiation 12, first grounding parts 131 connects with an end of third part and extends to the direction opposite with first Department of Radiation, 121 bearing of trends, second grounding parts 132 is connected the place, centre position of third part and is parallel to first grounding parts 131 and extends, and described second grounding parts 132 and first grounding parts 131 extend in the same way.Described first Department of Radiation 121 and first grounding parts 131 are located along the same line, and described second Department of Radiation 122 and second grounding parts 132 are located along the same line.

Described coaxial cable 20 comprises center conductor 21, is coated on the insulating barrier 22 outside the center conductor 21, the screening braid 23 of coated insulation layer 22 and the outer shell 24 of coating screening braid 23.Described center conductor 21 is welded to connect with Department of Radiation 12, and described center conductor 21 is welded on other end place opposite in the first 123, and described screening braid 23 is welded to connect with grounding parts 13.

Described galvanic circle 14 is connected to screening braid 23 and grounding parts 13 welds from center conductor 21 and Department of Radiation 12 welds.Described galvanic circle 14 comprises first section 141 that extends from center conductor 21 and Department of Radiation 12 welds along first direction, and is connected to screening braid 23 and grounding parts 13 from first section 141 end and is welded to connect second section 142 of place.The impedance matching effect can be played in described galvanic circle 14, and this kind design makes when it is applied to built-in antenna that a shape is susceptible to not, and blind spot is more shallow, and radiation field shape is round.

As shown in Figs. 3-4, the utility model second embodiment dipole antenna assembly 200 comprises dipole antenna 30 and the coaxial cable 40 that is connected with dipole antenna 30.The galvanic circle 34 that described dipole antenna 30 comprises substrate 31, is arranged on Department of Radiation 32, the grounding parts 33 on the substrate and can plays the impedance matching effect, described Department of Radiation 32, grounding parts 33 and galvanic circle 34 are arranged on the same side of substrate 31.Described coaxial cable 40 comprises the screening braid 43 of center conductor 41, the insulating barrier 42 that coats center conductor 41, coated insulation layer 42 and coats the outer shell of screening braid 43.Described galvanic circle 34 is connected to screening braid 43 and grounding parts 33 welds from the weld of center conductor 41 and Department of Radiation 32.The difference of this embodiment and first embodiment is that mainly dipole antenna is that single-band antenna only is provided with a Department of Radiation 32 and a grounding parts 33, and other structures and first embodiment are identical, no longer are described in detail at this.

Fig. 5 be the utility model second embodiment voltage standing wave ratio is with the variation diagram of frequency in the band limits of 2-3GHz, its voltage standing wave ratio in the WLAN (wireless local area network) frequency range of 2.4-2.5GHz is less than 2.

Fig. 6 be the utility model second embodiment return loss is with the variation diagram of frequency in the band limits of 2-3GHz, its return loss in the WLAN (wireless local area network) frequency range of 2.4-2.5GHz is less than-10dB.

In like manner, the design of this kind

galvanic circle

14,34 can also be applied on the product with three and above Department of Radiation.This

kind dipole antenna

10,30 also can be to adopt iron plate to create.

In the present embodiment, be provided with

galvanic circle

14,34 in the dipole antenna assembly 100,200, its shape susceptible to not after tested, blind spot is more shallow, and radiation field shape is round.

Claims

1. dipole antenna assembly, it comprises dipole antenna and the coaxial feeder that is connected with dipole antenna, described dipole antenna comprises Department of Radiation and grounding parts, described coaxial feeder comprises center conductor, coat the insulating barrier of center conductor and the screening braid of coated insulation layer, described center conductor is welded on the Department of Radiation, described screening braid is welded on the grounding parts, it is characterized in that: described dipole antenna assembly also is provided with the galvanic circle that can play impedance matching, and described galvanic circle is connected to the weld of shielding organization level and grounding parts from the weld of center conductor and Department of Radiation.

2. dipole antenna assembly as claimed in claim 1 is characterized in that: described dipole antenna also comprises substrate, and described Department of Radiation, grounding parts and galvanic circle all are arranged on the substrate.

3. dipole antenna assembly as claimed in claim 2 is characterized in that: described Department of Radiation, grounding parts and galvanic circle all are arranged on the same side of substrate.

4. dipole antenna assembly as claimed in claim 1, it is characterized in that: described Department of Radiation comprises first Department of Radiation of radiation-curable first frequency and second Department of Radiation of radiation-curable second frequency, and described grounding parts comprises first grounding parts corresponding with first Department of Radiation and second Department of Radiation corresponding with second Department of Radiation.

5. dipole antenna assembly as claimed in claim 1, it is characterized in that: described Department of Radiation comprises first and the second portion that vertically extends to first direction from an end of first, described grounding parts comprises third part parallel with first and the second portion that extends along the opposite second direction of first direction from third part one end, and described first and the 4th part are on same straight line.

6. dipole antenna assembly as claimed in claim 5 is characterized in that: described center conductor and the weld of Department of Radiation are arranged on the opposite other end of first.

7. dipole antenna assembly as claimed in claim 6 is characterized in that: described galvanic circle from the weld of center conductor and Department of Radiation earlier along the weld that extends to screening braid and grounding parts after first direction extends a segment distance again along second direction.