CN101325284B

CN101325284B - Digital television antenna

Info

Publication number: CN101325284B
Application number: CN200810133583XA
Authority: CN
Inventors: 杨成发; 马自庄; 陈弦义; 林勇达; 陈博文
Original assignee: YUANGANG SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: YUANGANG SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 2008-07-17
Filing date: 2008-07-17
Publication date: 2012-02-08
Anticipated expiration: 2028-07-17
Also published as: CN101325284A

Abstract

The invention relates to a digital television antenna which comprises a lead wire, a first radiation conductor, a second radiation conductor and a transmission line, wherein the first radiation conductor and the second radiation conductor are spaced at a pre-set distance and mutually connected via the lead wire. Each radiation conductor comprises a feed-in point, a zigzag main-loop metal wire which is in a continuous S-shaped or inverted S-shaped arrangement on a substrate, and a sub-loop metal wire. The sub-loop metal wire is coupled to a bending end part between the first radiation conductor and the second radiation conductor.

Description

Digital TV antenna

Technical field

The invention relates to a kind of antenna assembly, and particularly relevant for being built in a kind of in the wireless telecommunications system, in order to the antenna assembly of receiving digital television signal.

Background technology

Along with the progress of science and technology, the main battle ground of mechanics of communication is transferred to wireless mechanics of communication from wired mechanics of communication gradually.Especially be applied on the digital TV signal propagation; Making wireless digital TV-set can be used in outdoor and move receives; Need not be confined to indoor watching; This moment the reception quality the link paid attention to most of the good and the bad person of being to use, and the antenna assembly of undertaking the reception important task promptly becomes one of element of wireless digital TV-set most critical.

In order to the mobile device of receiving digital television signal, antenna assembly mostly was that the outside that is attached to mobile device receives no limited signal in the past, for example spiral (helix) antenna, however damage and be unfavorable for carrying owing to exposed antenna is subject to external force.Therefore present designer trends are to use a kind of external antenna device, and the USB port that when using, is coupled to mobile device again sends the wireless digital TV-set signal to mobile device.But since the operation frequency range of DTV between 470MHz to 870MHz, if can cause external antenna excessive and be unfavorable for carrying or the like according to general antenna physical size design.

Therefore a kind of miniature reception antenna that is integrated in circumscribed wireless digital TV-set receiving box of real palpus is to promote wireless mobile convenience.

Summary of the invention

Therefore technical problem to be solved by this invention is providing a kind of micro radio digital television receiver antenna exactly, can be incorporated in the circumscribed wireless digital TV-set frequency receiving box.

For reaching above-mentioned purpose; Digital TV antenna of the present invention; Be positioned at a mobile device, comprise: a lead, one first radiation conductor, one second radiation conductor and a transmission line, wherein first radiation conductor and the second radiation conductor spacing, one predeterminable range and interconnect with this lead; Each radiation conductor comprises a load point, a major loop metal wire; Be formed on the substrate with continuous serpentine or the arrangement mode of serpentine of falling, and the primary circuit metal wire, the folded end between this minor loop metal wire and this first radiation conductor and second radiation are led couples.Transmission line has an earth connection and a holding wire, connects the load point of first radiation conductor and second radiation conductor respectively, so can form differential input signal.

Digital TV antenna of the present invention can be integrated in the circumscribed wireless digital TV-set receiving box, can promote wireless mobile convenience.

Description of drawings

For letting above and other objects of the present invention, characteristic, advantage and the embodiment can be more obviously understandable, the detailed description of appended accompanying drawing be following:

Shown in Figure 1 is the digital TV antenna summary icon of one preferred embodiment according to the present invention;

Shown in Figure 2 is according to yet another preferred embodiment of the present invention digital TV antenna summary icon;

Shown in Figure 3ly return the loss measurement result for antenna of the present invention.

[main element symbol description]

100 digital television receiver antennas

101 transmission lines

102,104 first and second radiation conductors

105 leads

106 first tortuous major cycle metal wires

108 loop metal wires for the first time

1061～1,069 first to the 9th folded end

110 second tortuous major cycle metal wires

112 loop metal wires for the second time

113,114 load points

Embodiment

Fig. 1 is the digital TV antenna 100 summary icons of one preferred embodiment according to the present invention.Wherein this digital TV antenna 100 is built in a mobile device; For example in the circumscribed wireless digital TV-set receiving box; In order to the DTV frequency range of reception 470MHz to 870MHz, and this circumscribed wireless digital TV-set receiving box for example is a digital television stick (DTV USB DONGLE).

Digital TV antenna 100 of the present invention comprises first and second radiation conductor 102,104 and a transmission line 101 of two parallel arranged and symmetry.Two

radiation conductors

102 and 104 have a predeterminable range d to each other, and configured in parallel is joined on a substrate (not drawing among the figure) between the two and with a lead 105.And this predeterminable range d is 2mm (millimeter), but predeterminable range d is not limited by present embodiment in practical application.In addition, first and second radiation conductor 102,104 interconnects the total length that forms 117.9mm through lead 105.And in order to form the substrate of digital TV antenna 100, for example be formed at the inboard of circumscribed wireless digital TV-set receiving box loam cake, and the formation method, for example be formed at the inboard of receiving box loam cake with printing or etching technique.Transmission line 101 can be a bronze medal axle transmission line or a planar transmission line, also can be transferred to form differential input terminal through balance-to-imbalance by microstrip transmission line.

First radiation conductor 102 includes one first tortuous major cycle metal wire 106 and loop metal wire 108 for the first time.In one embodiment; The first tortuous major cycle metal wire 106 is that the cabling mode with continuous serpentine is arranged on the substrate; And form 9 folded end; Be respectively first to the 9th folded end 1061～1069, and at the end of the first tortuous major cycle metal wire 106 as a load point 113, its other end then is coupled to lead 105.But the folded end number of the first tortuous major cycle metal wire 106 is not limited by present embodiment in practical application.Loop metal wire 108 couples with odd number folded

end

1061,1063,1065,1067 and 1069 bottoms respectively for the first time, increases current path length in order to form extra loop.And in another embodiment, as shown in Figure 2, loop metal wire 108 is coupled to a side of folded end bottom for the first time.

Second radiation conductor 104 includes one second tortuous major cycle metal wire 110 and loop metal wire 112 for the second time.In one embodiment; The second tortuous major cycle metal wire 110 is arranged on the substrate with the cabling mode of continuous counter-rotating serpentine; And form 9 folded end, and in the end of the second tortuous major cycle metal wire 110 as a load point 114, its other end then is coupled to lead 105.But the folded end number of the second tortuous major cycle metal wire 110 is not limited by present embodiment in practical application.Similar, loop metal wire 112 couples with the odd number folded end bottom of the second tortuous major cycle metal wire 110 respectively for the second time, increases current path length in order to form extra loop.And in another embodiment, the loop metal wire also can be coupled to a side of folded end bottom for the second time.Wherein load point 113 is connected to the signal conductor of a bronze medal axle transmission line 101, and load point 114 is connected with the earth lead of copper axle transmission line 101.

In one embodiment, in order to form the first tortuous major cycle metal wire 106, for the first time loop metal wire 108, the second tortuous major cycle metal wire 110 and for the second time the cabling live width of loop metal wire 112 be 0.1mm.And the first tortuous major cycle metal wire 106 and the second tortuous major cycle metal wire 110 distance between centers of tracks of walking separately are all 0.3mm.And the first tortuous major cycle metal wire 106 and for the first time the distance between centers of tracks of walking of 108 of loop metal wires be 0.1mm, the second tortuous major cycle metal wire 110 and for the second time the distance between centers of tracks of walking of 112 of loop metal wires be 0.1mm.But in practical application; The first tortuous major cycle metal wire 106, loop metal wire 108, the second tortuous major cycle metal wire 110 and the live width and the line-spacing of the cabling of loop metal wire 112 for the second time for the first time; And first tortuous major

cycle metal wire

106 and 108 of loop metal wires for the first time, the second tortuous major cycle metal wire 110 and for the second time the distance between centers of tracks of walking of 112 of loop metal wires do not limited by present embodiment.In other embodiment; Because the effective length of antenna is relevant with frequency of operation and wavelength, so can design the antenna that meets the frequency range demand through changing antenna-path length; Also can influence the coupling amount, the effective length of remote-effects antenna in addition through change live width, line-spacing.

Antenna to return loss as shown in Figure 3 via experimental measurement, the following size of this experimental selection is measured: first and second radiation conductor spacing is 2mm.9 folded end of the equal tool of first and second tortuous major cycle metal wire.The first tortuous major cycle metal wire and the second tortuous major cycle metal wire distance between centers of tracks of walking separately are all 0.3mm.The first tortuous major cycle metal wire and for the first time between the metal wire of loop, and the second tortuous major cycle metal wire and for the second time the distance between centers of tracks of walking between the metal wire of loop be 0.1mm.Learn that by returning loss figure the global design of antenna has good metric data.

It should be noted that; Above-mentioned antenna all is to be that example describes with the dipole antenna; But the structure of the present invention's first radiation conductor 102 or second radiation conductor 104 also can be used separately, influences coupling application in unipole antenna through changing antenna live width, line-spacing and first sheet metal and the second sheet metal geometry.

Though the present invention discloses as above with a preferred embodiment; Right its is not in order to limit the present invention; Any have a common knowledge the knowledgeable in the technical field under the present invention; Do not breaking away from the spirit and scope of the present invention, when can doing various changes and retouching, so protection scope of the present invention is as the criterion when looking the scope that accompanying Claim defines.

Claims

1. a digital TV antenna is characterized in that, is positioned at a mobile device, comprises:

One lead;

One first radiation conductor is positioned on the substrate, and wherein this first radiation conductor comprises:

One first load point;

One first tortuous major cycle metal wire is positioned on this substrate and forms at least one first folded end with the arrangement mode of continuous S-shaped, and an end of this first tortuous major cycle metal wire couples this first load point, and the other end couples this lead; And

One loop metal wire for the first time couples with this at least one first folded end;

One second radiation conductor is positioned on this substrate, and wherein this second radiation conductor and this first radiation conductor spacing, one predeterminable range configured in parallel interconnect on this substrate and with this lead, and wherein this second radiation conductor comprises:

One second load point;

One second tortuous major cycle metal wire is positioned on this substrate and forms at least one second folded end with the arrangement mode of continuous counter-rotating S shape, and an end of this second tortuous major cycle metal wire couples this second load point, and the other end couples this lead; And

One loop metal wire for the second time couples with this at least one second folded end;

One transmission line has an earth connection and a holding wire, connects this first load point and this second load point respectively.

2. digital TV antenna according to claim 1 is characterized in that, this first and second radiation conductor is in order to receive the DTV frequency range of 470MHz to 870MHz.

3. digital TV antenna according to claim 1 is characterized in that this substrate is the shell of this mobile device, and this mobile device is a digital television stick.

4. digital TV antenna according to claim 1 is characterized in that, this predeterminable range is 2mm.

5. digital TV antenna according to claim 1 is characterized in that, the live width of this first tortuous major cycle metal wire and this second tortuous major cycle metal wire all is 0.1mm.

6. digital TV antenna according to claim 1 is characterized in that, this first tortuous major cycle metal wire has nine first folded end, and this second tortuous major cycle metal wire has nine second folded end.

7. digital TV antenna according to claim 1 is characterized in that, this, loop metal wire was coupled to a side of this first folded end bottom first time, and this, loop metal wire was coupled to a side of this second folded end bottom second time.

8. digital TV antenna according to claim 1 is characterized in that, this first radiation conductor, this second radiation conductor and this lead are interconnected to form the length of 117.9mm.

9. a digital TV antenna is characterized in that, is positioned at a mobile device, comprises:

One load point;

One tortuous major cycle metal wire is positioned on the substrate and forms at least one folded end with the arrangement mode of continuous S-shaped, and an end of this complications major cycle metal wire couples this load point; And

The primary circuit metal wire couples with this folded end.