CN102299410A - Digital TV (television) antenna - Google Patents
Digital TV (television) antenna Download PDFInfo
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- CN102299410A CN102299410A CN2011101255767A CN201110125576A CN102299410A CN 102299410 A CN102299410 A CN 102299410A CN 2011101255767 A CN2011101255767 A CN 2011101255767A CN 201110125576 A CN201110125576 A CN 201110125576A CN 102299410 A CN102299410 A CN 102299410A
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- metal arm
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Abstract
The invention relates to a digital TV (television) antenna, comprising a substrate and a radiating element formed on the substrate, wherein the radiating element comprises a grounding metal arm, a signal feed metal arm and a parasitic metal arm which extends from the signal feed metal arm, thus adjusting the coupling quantity of the digital TV antenna by the parasitic metal arm.
Description
Technical field
The invention relates to a kind of antenna, and particularly relevant for a kind of digital TV antenna.
Background technology
Along with the fast development of wireless telecommunications industry, each class of electronic devices, for example mobile phone, computer, network etc. have possessed the function that the wireless telecommunications of utilizing reach the signal transmission at present all.Radio wide area network (Wireless Wide Area Network particularly; WWAN) since its can be in the zone, the whole nation or even the whole world service of signal transmission is provided, so increasing consumption electronic products are expected the radio wide area network technology is integrated in wherein.
Wireless telecommunications are mainly launched and the equipment that receives is signal transceiver and installing antenna thereon.Wherein, antenna is to transmit and receive electromagnetic window, and it must be through special design, make the radio-frequency (RF) energy of transmitting terminal in electromagnetic mode effectively to aerial radiation, perhaps intercept aerial electromagnetic wave energy and change the useful radiofrequency signal of receiving terminal into.The quality of Antenna Design has almost influenced system's performance of whole communication product, and it is considerable therefore designing a up to specification and practical antenna.
Because the operation frequency range of Digital Television arrives 870MHz between 470MHz, according to general antenna physical size can't be built in mostly mobile device, handheld apparatus very the person be the mobile computer enclosure, thereby produced all problems, for example antenna is subject to external force and damages, increases the added burden of line design and be unfavorable for carrying or the like.So the antenna of traditional circumscribed can more and more be not suitable for being used in the middle of the application of wireless telecommunications in the future.Therefore, the someone proposes a kind of interior digital television receiver antenna design of shell that can be hidden in mobile product, to promote wireless mobile convenience.TaiWan, China number of patent application 97124739 has proposed a kind of built-in digital TV antenna, and it can be arranged on as among the mobile computer, in order to receive the Digital Television frequency range of 470MHz to 870MHz.
Because the frequency range that Digital Television is possible is extremely wide, indivedual manufacturers have its comparatively ideal reception frequency range again, therefore, how under the prerequisite that does not change original dimensions, can design digital TV antenna neatly at the specification demand of manufacturer, except can containing large-scale reception frequency range, more can provide more satisfactory reception frequency range at indivedual manufacturers, just become an important problem.
Summary of the invention
Therefore purpose of the present invention is providing a kind of digital TV antenna exactly, sees through the coupling amount that the different parasitic metal arm of design is adjusted digital TV antenna.
According to one embodiment of the invention, a kind of digital TV antenna is proposed, be built in the mobile device, mobile device has ground plane.Digital TV antenna comprises substrate and is formed at radiation assembly on the substrate.Radiation assembly includes grounded metal arm, signal feed-in metal arm and parasitic metal arm.The grounded metal arm has grounding parts to electrically connect with ground plane.Signal feed-in metal arm is in order to receive the digital television signal of 470MHz to 870MHz frequency range, and signal feed-in metal arm has the signal feed-in point of the edges of boards that are positioned at substrate.Parasitic metal arm extends from signal feed-in metal arm, and in order to adjust the coupling amount of digital TV antenna, wherein signal feed-in metal arm is between parasitic metal arm and grounded metal arm.
Signal feed-in metal arm comprises connecting portion and Department of Radiation, and connecting portion connects signal feed-in point and Department of Radiation.Parasitic metal arm can extend from connecting portion or Department of Radiation.Wherein ground plane preferably with the radiation assembly copline.Grounded metal arm, signal feed-in metal arm and parasitic metal arm are formed on the same surface of substrate.Grounding parts ground connection is only arranged in the digital TV antenna.The extended length of parasitic metal arm is less than the extended length of signal feed-in metal arm.Parasitic metal arm can contact with the edges of boards of substrate, has one between the edges of boards of perhaps parasitic metal arm and substrate at interval.
The present invention can be under the prerequisite of the dimensions that does not change original antenna, by design extension suitably from the parasitic metal arm of signal feed-in metal arm, adjust the coupling amount of digital TV antenna effectively, and then the change digital TV antenna preferably receives frequency range.
Description of drawings
For above and other objects of the present invention, feature, advantage and embodiment can be become apparent, appended accompanying drawing is described in detail as follows:
Fig. 1 is the schematic diagram of digital TV antenna first embodiment of the present invention;
Fig. 2 is the schematic diagram of the digital TV antenna of known no parasitic metal arm;
Fig. 3 returns loss figure for the antenna of the known digital TV antenna 200 of Fig. 2;
Fig. 4 returns loss figure for the antenna of the digital TV antenna 100 among Fig. 1;
Fig. 5 is the receiving efficiency comparison diagram of the digital TV antenna of Fig. 1 and Fig. 2;
Fig. 6 is the schematic diagram of digital TV antenna second embodiment of the present invention;
Fig. 7 is the schematic diagram of digital TV antenna the 3rd embodiment of the present invention;
Fig. 8 is the schematic diagram of digital TV antenna the 4th embodiment of the present invention.
[primary clustering symbol description]
100: digital TV antenna
110: substrate
112: edges of boards
120: radiation assembly
130: the grounded metal arm
132: grounding parts
134: kink
140: signal feed-in metal arm
142: signal feed-in point
144: connecting portion
146: Department of Radiation
150: parasitic metal arm
152: root
160: the Copper Foil paster
190: ground plane
200: digital TV antenna
210: the grounded metal arm
220: signal feed-in metal arm
310: curve
320: curve
L1: extended length
L2: extended length
G: at interval
Embodiment
Below will clearly demonstrate spirit of the present invention with accompanying drawing and detailed description, have in the technical field under any and know that usually the knowledgeable is after understanding preferred embodiment of the present invention, when can be by the technology of teachings of the present invention, change and modification, it does not break away from spirit of the present invention and scope.
Fig. 1 is the schematic diagram of digital TV antenna first embodiment of the present invention.Digital TV antenna 100 is built among the mobile device, for example can be arranged among the mobile computer, for the mobile computer receiving digital television signal.The ground plane 190 that includes display panels in the mobile computer, digital TV antenna 100 can be arranged on a side of ground plane 190.Digital TV antenna 100 includes substrate 110, and is formed on the radiation assembly 120 on the substrate 110.Wherein radiation assembly 120 includes grounded metal arm 130, signal feed-in metal arm 140, and parasitic metal arm 150.Wherein radiation assembly 120 is parasitic metal arm 150, signal feed-in metal arm 140 and grounded metal arm 130 from inside to outside in regular turn, and signal feed-in metal arm 140 is roughly between parasitic metal arm 150 and grounded metal arm 130.
Grounded metal arm 130 has a grounding parts 132, and in order to electrically connect with ground plane 190, wherein digital TV antenna 100 can also include Copper Foil paster 160, so as to connecting grounding parts 132 and ground plane 190.Signal feed-in metal arm 140 is in order to receive the digital television signal of 470MHz to 870MHz frequency range, and signal feed-in metal arm 140 has the signal feed-in point 142 on the edges of boards 112 that are positioned at substrate 110.Parasitic 150 of metal arms are to extend from signal feed-in metal arm 140, in order to adjust the coupling amount of digital TV antenna 100.Wherein signal feed-in metal arm 140 is between grounded metal arm 130 and parasitic metal arm 150.
Grounded metal arm 130, signal feed-in metal arm 140 and parasitic metal arm 150 can see through planographic, etching, or the mode of stereo metal spare is formed on the substrate 110.The material of substrate 110 is a non-conductive material, as plastics etc.Grounded metal arm 130, signal feed-in metal arm 140 and parasitic metal arm 150 be for to be arranged on the same surface of substrate 110, ground plane 190 preferably be with substrate 110 on radiation assembly 120 coplines.
Among the digital TV antenna 100 of the present invention, only have the grounding parts 132 of grounded metal arm 130 can carry out ground connection, signal feed-in metal arm 140 does not have any position ground connection with parasitic metal arm 150.Have a plurality of kinks 134 on the grounded metal arm 130, these kinks 134 can be the configuration of " bow " font round, or are the configuration of step shape ground.Grounded metal arm 130 can be set to be similar to the outer rim around substrate 110.
The signal feed-in point 142 of signal feed-in metal arm 140 is positioned at the edges of boards 112 of substrate 110, is positioned at the same side with grounding parts 132, and electric current can be by signal feed-in point 142 entering signal feed-in metal arms 140.Signal feed-in metal arm 140 includes connecting portion 144 and Department of Radiation 146, and connecting portion 144 connects Department of Radiation 146 and signal feed-in point 142.Wherein the shape approximation of connecting portion 144 is in L shaped, and the shape approximation of Department of Radiation 146 is in rectangle.One end of connecting portion 144 is connected with signal feed-in point 142, and the other end of connecting portion 144 connects Department of Radiation 146.In the present embodiment, parasitic metal arm 150 is the connecting portion 144 of extension from signal feed-in metal arm 140, and parasitic metal arm 150 is adjacent to signal feed-in point 142 with the root 152 that signal feed-in metal arm 140 is connected.The extended length L1 of parasitic metal arm 150 is less than the extended length L2 of signal feed-in metal arm 140.Parasitic metal arm 150 contacts with the edges of boards 112 of substrate 110.The shape of wherein parasitic metal arm 150, extended length and and signal feed-in metal arm 140 between the interval all can design according to actual demand, can adjust the coupling amount of digital TV antenna 100 by the design of parasitic metal arm 150.
It is noted that aforesaid signal feed-in metal arm 140, parasitic metal arm 150 all belong to radiation assembly 120 with grounded metal arm 130.Aforesaid each title, is to name for convenience of description as connecting portion 144 with Department of Radiation 146 grades, but in fact non-have only Department of Radiation 146 to have radiation function, but signal feed-in metal arm 140, parasitic metal arm 150 and grounded metal arm 130 all have radiation function, especially in this explanation.
Fig. 2 is the schematic diagram of the digital TV antenna of known no parasitic metal arm.The digital TV antenna 200 that is illustrated among Fig. 2 includes grounded metal arm 210 and signal feed-in metal arm 220.The difference of the digital TV antenna 100 among digital TV antenna 200 and Fig. 1 is that digital TV antenna 200 does not have parasitic metal arm, as for the design of grounded metal arm 210 and signal feed-in metal arm 220 all with Fig. 1 in grounded metal arm 130 identical with signal feed-in metal arm 140.
Fig. 3 returns loss figure for the antenna of the known digital TV antenna 200 of Fig. 2.By can learning among the figure, the preferable reception frequency range of this digital TV antenna 200 about the 474MHz of numbering 1 and in numbering 6 between the 714MHz to 810MHz of numbering 8.
Fig. 4 returns loss figure for the antenna of the digital TV antenna 100 among Fig. 1.Design of the present invention can be in response to the individual demand of each tame manufacturer, under identical framework and dimensions, adjust the coupling amount of digital TV antenna 100 by designing different parasitic metal arms 150, and then change the preferable reception frequency range of digital TV antenna 100.By can learning among the figure, after the parasitic metal arm 150 that adds suitably design, the preferable reception frequency range of digital TV antenna 100 becomes about the 522MHz of numbering 2 and number about 9 858Mhz.
Fig. 5 is the receiving efficiency comparison diagram of the digital TV antenna of Fig. 1 and Fig. 2.Curve 310 is the efficient of the digital TV antenna 200 of Fig. 2 corresponding to difference reception frequency range, and curve 320 is the digital TV antenna 100 of Fig. 1 receives frequency range corresponding to difference a efficient.Can learn among the figure that in target frequency bands (as the aforementioned about 858Mhz), the receiving efficiency of the digital TV antenna 100 of Fig. 1 exceeds significantly in the receiving efficiency of the digital TV antenna 200 of Fig. 2.
Should be appreciated that in the following description, the content of having narrated in the above-described embodiment will no longer repeat to give unnecessary details, only just replenished with the technology contents of parasitic metal arm part correlation, close chat earlier bright.
Fig. 6 is the schematic diagram of digital TV antenna second embodiment of the present invention.Digital TV antenna 100 includes substrate 110 and is formed at radiation assembly 120 on the substrate 110.Radiation assembly 120 includes grounded metal arm 130, signal feed-in metal arm 140 and parasitic metal arm 150.Wherein parasitic metal arm 150 is for extending the connecting portion 144 from signal feed-in metal arm 140, and the root 152 of parasitic metal arm 150 is adjacent to the signal feed-in point 142 of signal feed-in metal arm 140.Parasitic metal arm 150 does not directly contact with the edges of boards 112 of substrate 110, in other words, has g at interval between the edges of boards 112 of parasitic metal arm 150 and substrate 110.The shape of parasitic metal arm 150 and length and and signal feed-in metal arm 140 between distance can be according to the Demand Design of reality.
Fig. 7 is the schematic diagram of digital TV antenna the 3rd embodiment of the present invention.Digital TV antenna 100 includes substrate 110 and is formed at radiation assembly 120 on the substrate 110.Radiation assembly 120 includes grounded metal arm 130, signal feed-in metal arm 140 and parasitic metal arm 150.Wherein parasitic metal arm 150 is for extending from the stage casing of the connecting portion 144 of signal feed-in metal arm 140, and root 152 branches of parasitic metal arm 150 are from signal feed-in metal arm 140, and is not adjacent to signal feed-in point 142.Parasitic metal arm 150 does not directly contact with the edges of boards 112 of substrate 110, in other words, has g at interval between the edges of boards 112 of parasitic metal arm 150 and substrate 110.The shape of parasitic metal arm 150 and length and and signal feed-in metal arm 140 between distance can be according to the Demand Design of reality.
Fig. 8 is the schematic diagram of digital TV antenna the 4th embodiment of the present invention.Digital TV antenna 100 includes substrate 110 and is formed at radiation assembly 120 on the substrate 110.Radiation assembly 120 includes grounded metal arm 130, signal feed-in metal arm 140 and parasitic metal arm 150.Wherein parasitic metal arm 150 is for extending the Department of Radiation 146 from signal feed-in metal arm 140.Parasitic metal arm 150 does not directly contact with the edges of boards 112 of substrate 110, in other words, has g at interval between the edges of boards 112 of parasitic metal arm 150 and substrate 110.The shape of parasitic metal arm 150 and length and and signal feed-in metal arm 140 between distance can be according to the Demand Design of reality.
By the invention described above preferred embodiment as can be known, use the present invention and have following advantage.The present invention can be under the prerequisite of the dimensions that does not change original antenna, by design extension suitably from the parasitic metal arm of signal feed-in metal arm, adjust the coupling amount of digital TV antenna effectively, and then the change digital TV antenna preferably receives frequency range.
Though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; anyly be familiar with this skill person; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, therefore scope of patent protection of the present invention must be looked the scope that appending claims defines and is as the criterion.
Claims (10)
1. a digital TV antenna is characterized in that, is built in the mobile device, and this mobile device has a ground plane, and this digital TV antenna comprises:
One substrate; And
One radiation assembly is formed on this substrate, comprises:
One grounded metal arm has a grounding parts and this ground plane and electrically connects;
One signal feed-in metal arm, in order to receive the digital television signal of 470MHz to 870MHz frequency range, this signal feed-in metal arm has a signal feed-in point of edges of boards that are positioned at this substrate; And
One parasitic metal arm extends from this signal feed-in metal arm, and in order to adjust a coupling amount of this digital TV antenna, wherein this signal feed-in metal arm is between this parasitism metal arm and this grounded metal arm.
2. digital TV antenna according to claim 1 is characterized in that, this signal feed-in metal arm comprises an a junction and a Department of Radiation, and this connecting portion connects this signal feed-in point and this Department of Radiation.
3. digital TV antenna according to claim 2 is characterized in that, this parasitism metal arm extends from this connecting portion.
4. digital TV antenna according to claim 2 is characterized in that, this parasitism metal arm extends from this Department of Radiation.
5. digital TV antenna according to claim 1 is characterized in that, this ground plane and this radiation assembly copline.
6. digital TV antenna according to claim 1 is characterized in that, this grounded metal arm, this signal feed-in metal arm and this parasitism metal arm are formed on the same surface of this substrate.
7. digital TV antenna according to claim 1 is characterized in that, this grounding parts ground connection is only arranged.
8. digital TV antenna according to claim 1 is characterized in that, the extended length of this parasitism metal arm is less than the extended length of this signal feed-in metal arm.
9. digital TV antenna according to claim 1 is characterized in that, this parasitism metal arm contacts with these edges of boards of this substrate.
10. digital TV antenna according to claim 1 is characterized in that, has one between these edges of boards of this parasitism metal arm and this substrate at interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101255767A CN102299410A (en) | 2011-05-10 | 2011-05-10 | Digital TV (television) antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101255767A CN102299410A (en) | 2011-05-10 | 2011-05-10 | Digital TV (television) antenna |
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| Publication Number | Publication Date |
|---|---|
| CN102299410A true CN102299410A (en) | 2011-12-28 |
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ID=45359672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101255767A Pending CN102299410A (en) | 2011-05-10 | 2011-05-10 | Digital TV (television) antenna |
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| Country | Link |
|---|---|
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6259470B1 (en) * | 1997-12-18 | 2001-07-10 | Intel Corporation | Image capture system having virtual camera |
| CN101316003A (en) * | 2008-07-01 | 2008-12-03 | 圆刚科技股份有限公司 | Built-in type digital television antenna |
-
2011
- 2011-05-10 CN CN2011101255767A patent/CN102299410A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6259470B1 (en) * | 1997-12-18 | 2001-07-10 | Intel Corporation | Image capture system having virtual camera |
| CN101316003A (en) * | 2008-07-01 | 2008-12-03 | 圆刚科技股份有限公司 | Built-in type digital television antenna |
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Application publication date: 20111228 |