CN102570036A

CN102570036A - Multi-frequency antenna

Info

Publication number: CN102570036A
Application number: CN2010106052285A
Authority: CN
Inventors: 魏正帆
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: 2010-12-24
Filing date: 2010-12-24
Publication date: 2012-07-11
Anticipated expiration: 2030-12-24
Also published as: CN102570036B

Abstract

The invention discloses a multi-frequency antenna, which comprises a grounding part, a first radiation part, a second radiation part and a feed-in coaxial transmission line, wherein the grounding part extends in the lengthwise direction and is provided with an edge; the first radiation part is suspended above the grounding part and comprises a feed-in part, a first radiation arm and a second radiation arm; the feed-in part is perpendicular to the grounding part; the first radiation arm and the second radiation arm extend from two opposite sides of the feed-in part in directions away from each other; the second radiation part comprises a first arm and a second arm; the first arm extends vertically and upwardly from the edge of the grounding part; the second arm extends horizontally from the tail end of the first arm towards the first radiation arm of the first radiation part; the feed-in coaxial transmission line comprises a central wire and an outer layer grounding conductor; the central wire is connected to the feed-in part; the outer layer grounding conductor is connected to the grounding part; and gaps are formed between the second radiation arm of the first radiation part and the second radiation part as well ass the grounding part respectively.

Description

Multifrequency antenna

[technical field]

The relevant a kind of multifrequency antenna of the present invention relates in particular to a kind of multifrequency antenna that is applied on the radio communication product.

[background technology]

The wireless mobile Development of Communication is showing improvement or progress day by day, and it is also more prevalent that various end products carry the 3G wireless modules, at present with MID or flat computer much-sought-after item the most.Because this type product is comparatively compact, mechanism's part influenced its signal receiving/transmission usefulness arround the antenna structure space also was compressed and receives more easily.Traditional PI FA structure WWAN antenna its radiation field shape on this series products is vulnerable to improper absorption, causes usefulness relatively poor, can't contain the frequency band of broad.

Therefore, be necessary to design a kind of invention antenna and overcome the problems referred to above.

[summary of the invention]

Main purpose of the present invention is to provide a kind of multifrequency antenna of bandwidth.

For reaching above-mentioned purpose, multifrequency antenna of the present invention comprises: a kind of multifrequency antenna, and it comprises: grounding parts, first Department of Radiation, second Department of Radiation and feed-in coaxial transmission line; Wherein aforementioned grounding parts extends along longitudinally, has one edge; Aforementioned first Department of Radiation is suspended on the grounding parts top; Comprise the feeding portion of vertical said grounding parts and unsettled setting and first radiation arm, second radiation arm that extends away from direction each other from edge, the relative both sides of feeding portion, first radiation arm works in the first higher frequency band; Aforementioned second Department of Radiation is positioned at aforementioned first radiation arm, one side; Comprise that second Department of Radiation works in the second lower frequency band from the upwardly extending the first arm of the edge-perpendicular of grounding parts and terminal towards direction and horizontally extending second arm near first radiation arm of aforementioned first Department of Radiation from the first arm; Aforementioned feed-in coaxial transmission line comprises center conductor and outer earthing conductor in order to transmission signal, and center conductor is connected to aforementioned feeding portion, and outer earthing conductor is connected to aforementioned grounding parts; Second radiation arm of wherein aforementioned first Department of Radiation and second Department of Radiation and grounding parts form the gap respectively.

For reaching above-mentioned purpose, multifrequency antenna of the present invention can also comprise: a kind of multifrequency antenna, and it comprises: along grounding parts, first Department of Radiation, second Department of Radiation and the coaxial transmission line of longitudinally extension; Aforementioned first Department of Radiation is suspended on grounding parts top and is supported by collets, comprises feeding portion and is positioned at the feeding portion both sides and is positioned at first radiation arm, second radiation arm of Different Plane; Aforementioned second Department of Radiation and aforementioned first radiation arm are provided with at interval, comprise from the grounding parts vertical extent and with the first arm of the aforementioned second radiation arm coplane, from the first arm towards second arm that extends near the direction of aforementioned first radiation arm and from second crook of the arm folding back along the 3rd arm that extends away from the direction of first radiation arm; Aforementioned coaxial transmission line comprises center conductor and outer earthing conductor in order to transmission signal, and center conductor is connected to aforementioned feeding portion, and outer earthing conductor is connected to aforementioned grounding parts; First radiation arm of wherein aforementioned first Department of Radiation has and the second arm coplane of aforementioned second Department of Radiation and adjacent horizontal segment and the tail end that extends of this horizontal segment bending certainly.

Compare with known techniques, it is wide that multifrequency antenna of the present invention is contained frequency range.

[description of drawings]

Fig. 1 is the three-dimensional combination figure of multifrequency antenna of the present invention.

Fig. 2 is the three-dimensional exploded view of multifrequency antenna of the present invention

Fig. 3 is the view of another angle shown in Figure 2.

Fig. 4 is the voltage standing wave ratio figure of multifrequency antenna of the present invention.

[embodiment]

See also Fig. 1 to shown in Figure 4, multifrequency antenna 1 of the present invention is processed by the metallic plate die cut, comprises grounding parts 10, first Department of Radiation 11, second Department of Radiation 12 and a coaxial transmission line 13.

Grounding parts 10 comprises the rectangular body portion 101 of extending along longitudinally, and it has first edge 102 and second edge 103, from second edge 103 to extending below an extension 104.

First Department of Radiation 11 is suspended on grounding parts 10 tops, comprises first radiation arm 111, second radiation arm 113 and the feeding portion 112 that connects first radiation arm 111 and second radiation arm 113.First radiation arm 111 and second radiation arm 113 respectively from feeding portion 112 both sides towards each other away from direction extend.First radiation arm 111 comprise from feeding portion 112 extend upward and vertical with grounding parts 10 first support arm 1111, from 1111 bendings of first support arm and horizontally extending half " worker " type second support arm 1112 (horizontal segment) and from 1112 bendings of second support arm to the 3rd support arm 1113 (tail end) that extends below.Second radiation arm 113 is the L type and comprises first section 1131 of extending along longitudinally from feeding portion 112 and perpendicular to first section 1131 upwardly extending second section 1132.

Second Department of Radiation, 12 integral body roughly are the L configuration and are positioned at first radiation arm, 111 1 sides of first Department of Radiation 11, and it comprises the first arm 121 that the end from first edge 102 of grounding parts 10 extends vertically upward, terminal towards half " worker " type second arm 122 (horizontal segment) that extends near the direction of first Department of Radiation 11 and the 3rd arms 123 (tail end) that extend towards the longitudinally away from first Department of Radiation 11 from second arm, 122 terminal bending downwards backs from the first arm 121.Second arm 122 is positioned at same plane with second support arm 1112 of aforementioned first Department of Radiation 11, and first support arm 1111 of second arm 122, the 3rd arm 123 and first Department of Radiation 11, second support arm 1112 near and formation gap 14.Second radiation arm 113 of first Department of Radiation 12 and the first arm 121 coplanes of second Department of Radiation 12; Second radiation arm, 113 integral body are positioned at the L configuration inboard of second Department of Radiation 12; Wherein second section 1132 adjacent with the first arm 121, and second radiation arm 113 and second Department of Radiation 12 and grounding parts 10

form gap

15,16 respectively.

Coaxial transmission line 13 comprises center conductor 131 and outer earthing conductor 132, and center conductor 131 is welded in feeding portion 112, and outer earthing conductor 132 is welded in grounding parts 10.Signal flows into feeding portion 112 by center conductor 131; Thereby first radiation arm 111 that makes first Department of Radiation 11 works in higher first working frequency range (1.71-2.17GHZ); This frequency range can contain system's frequency range demand of DCS (1710-1880MHz), PCS (1850-1990MHz) and UMTS (1920-2170MHz); Thereby second Department of Radiation 12 works in lower second working frequency range (824-960MHZ) by the coupling of second radiation arm 113, and this frequency range can be contained system's frequency range demand of AMPS (824-894MHz) and GSM (880-960MHz).Thereby second radiation arm 113 also is used to adjust impedance matching adjusts first, second working frequency range.

Multifrequency antenna 1 is assembled on the collets 2; Collets 2 are corresponding with antenna 1 shape and be irregular bulk; It has front 21, end face 22 and bottom surface 23, and antenna 1 is enclosed in the periphery of collets 2, and the main part 101 of grounding parts 10 is posted by the bottom surface 23 of collets 2.The first unsettled Department of Radiation 11 of antenna 1 is insulated piece 2 and supports, and first Department of Radiation 11 is positioned at the end face 22 that the horizontal component at top and horizontal component that second Department of Radiation 12 is positioned at the top are posted by collets 2.The mid portion of antenna 1 is posted by the front 23 of collets 2.Join shown in Figure 2; 21 tops, front of collets 2 have an inclined plane 211; The top of the first arm 121 of multifrequency antenna 1, the 3rd arm 123, first support arm 1111, the 3rd support arm 1113 also is provided with an inclined plane, and in other embodiments, the inclined plane can not have yet; Extension 104 also can be processed by metal forming, does not perhaps have extension 104.Second radiation arm 113 also can be other shape.

Claims

1. multifrequency antenna, it comprises grounding parts, first Department of Radiation, second Department of Radiation and feed-in coaxial transmission line; Wherein aforementioned grounding parts extends along longitudinally; Has one edge; Aforementioned first Department of Radiation is suspended on the grounding parts top; Comprise the feeding portion of vertical said grounding parts and unsettled setting and first radiation arm, second radiation arm that extends away from direction each other from edge, the relative both sides of feeding portion, first radiation arm works in the first higher frequency band; Aforementioned second Department of Radiation is positioned at aforementioned first radiation arm, one side; Comprise from the upwardly extending the first arm of the edge-perpendicular of grounding parts and terminal towards direction and horizontally extending second arm near first radiation arm of aforementioned first Department of Radiation from the first arm; Second Department of Radiation works in the second lower frequency band; It is characterized in that: aforementioned feed-in coaxial transmission line comprises center conductor and outer earthing conductor in order to transmission signal, and center conductor is connected to aforementioned feeding portion; Outer earthing conductor is connected to aforementioned grounding parts, and second radiation arm of wherein aforementioned first Department of Radiation and second Department of Radiation and grounding parts form the gap respectively.

2. multifrequency antenna as claimed in claim 1 is characterized in that: first radiation arm of said first Department of Radiation comprise link to each other with feeding portion and first support arm of coplane, from first support arm bending back horizontal-extending and be half " worker " type second support arm and perpendicular to second support arm extend and with the 3rd support arm of the first support arm coplane.

3. multifrequency antenna as claimed in claim 2; It is characterized in that: the first arm coplane of second radiation arm of said first Department of Radiation, feeding portion and second Department of Radiation; Second radiation arm is the L type and comprises that second section adjacent with aforementioned the first arm along first section that extends near the longitudinally of aforementioned the first arm and from first section vertically extending second section.

4. multifrequency antenna as claimed in claim 3 is characterized in that: said second Department of Radiation roughly is the L configuration, and its second arm is half " worker " type and is positioned at same plane with second support arm of first radiation arm of aforementioned first Department of Radiation.

5. multifrequency antenna as claimed in claim 4; It is characterized in that: said second Department of Radiation also comprises the 3rd arm that extends towards the longitudinally away from first Department of Radiation from second arm end bending back, aforementioned second arm and the 3rd arm and formation gap adjacent with first Department of Radiation.

6. multifrequency antenna as claimed in claim 5 is characterized in that: second radiation arm of said first Department of Radiation is positioned at second arm below of second Department of Radiation, and aforementioned grounding parts comprises the extension that horizontally extending main part and autonomous body extend vertically downward.

7. multifrequency antenna as claimed in claim 6; It is characterized in that: said multifrequency antenna also comprises the collets with end face, front and bottom surface; The main part of aforementioned grounding parts is posted by the bottom surface; Second support arm of aforementioned first Department of Radiation and second arm of second Department of Radiation are posted by end face, and the first arm of second radiation arm of first Department of Radiation, first support arm, the 3rd support arm, feeding portion and second Department of Radiation is posted by the front of collets jointly.

8. multifrequency antenna as claimed in claim 1 is characterized in that: said first working band is the 1.71-2.17GHZ frequency range, and second working band is the 824-960MHZ frequency range.

9. multifrequency antenna; It comprises grounding parts, first Department of Radiation, second Department of Radiation and the coaxial transmission line that extends along longitudinally; Aforementioned first Department of Radiation is suspended on the grounding parts top and is supported by collets; Comprise feeding portion and be positioned at the feeding portion both sides and be positioned at first radiation arm, second radiation arm of Different Plane; Aforementioned second Department of Radiation and aforementioned first radiation arm are provided with at interval; Comprise from the grounding parts vertical extent and with the first arm of the aforementioned second radiation arm coplane, from the first arm towards second arm that extends near the direction of aforementioned first radiation arm and from second crook of the arm folding back along the 3rd arm that extends away from the direction of first radiation arm; It is characterized in that: aforementioned coaxial transmission line comprises center conductor and outer earthing conductor in order to transmission signal, and center conductor is connected to aforementioned feeding portion; Outer earthing conductor is connected to aforementioned grounding parts, and first radiation arm of wherein aforementioned first Department of Radiation has and the second arm coplane of aforementioned second Department of Radiation and adjacent horizontal segment and the tail end that extends of this horizontal segment bending certainly.

10. multifrequency antenna as claimed in claim 9; It is characterized in that: first radiation arm of said first Department of Radiation works in the first working band 1.71-2.17GHZ of the system's frequency range demand that contains DCS, PCS and UMTS, and second Department of Radiation works in the second working band 824-960MHZ of the system's frequency range demand that contains AMPS and GSM.