CN102811324B - A kind of hand-held CMMB terminal - Google Patents
A kind of hand-held CMMB terminal Download PDFInfo
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- CN102811324B CN102811324B CN201110181084.XA CN201110181084A CN102811324B CN 102811324 B CN102811324 B CN 102811324B CN 201110181084 A CN201110181084 A CN 201110181084A CN 102811324 B CN102811324 B CN 102811324B
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Abstract
The present invention relates to a kind of hand-held CMMB terminal, comprising for receiving sound, vision signal, export the broadcast unit of corresponding sound and picture; For processing the CMMB signal received, the corresponding sound obtained, vision signal are exported to the processing unit of described broadcast unit; And at least one is for receiving CMMB signal, and the CMMB signal of reception is sent to the antenna of processing unit, this antenna comprises feeder line, sheet metal, and described feeder line is by sheet metal described in coupled modes feed-in; Described sheet metal is at least engraved asymmetrical first micro groove structure and the second micro groove structure, made described antenna have at least two different resonance band.To make, when handheld terminal volume is little, to meet the requirement of antenna low frequency work.
Description
Technical field
The invention belongs to Technology of Mobile Multimedia field, particularly, relate to a kind of hand-held CMMB terminal.
Background technology
CMMB (ChinaMobileMultimediaBroadcasting, China Mobile multimedia broadcasting) system be utilize high-power S-band satellite-signal cover the whole nation, utilize ground supplement translator with frequently mending Vertex cover satellite-signal blind area with content repeater satellite signal simultaneously, mobile radio networks is utilized to build return path, thus the mobile media broadcasting network that composition One-to-All Broadcast and two-way interactive combine.After signal is sent to S-band synchronous satellite by ground launch center, synchronous satellite forwards to the received signal, S-band signal after forwarding is directly received by the receiving terminal on ground, also can by being received by the receiving terminal on ground after supplement translator process.Signal is also sent to supplement translator process by distribution channels by this satellite, by forwarding after supplement translator process, augments the shadow region that satellite covers.
In prior art, CMMB system adopts the digital technologies such as coding, compression, modulation, for less than 7 cun small-size screen portable reception terminals provide broadcast TV program service, mainly contain two large Terminal Types, one is communication class terminal, i.e. cell phone type hand held television product, is called for short mobile TV; Another kind of is non-communication class terminal, as hand held television products such as PDA, MP3, MP4, digital camera, notebook computers.As long as various the small screen portable terminal device adds load onto a special chip, a removable hand held television of watching will be become.But handheld device antenna is controlled by the physical constraints of spatial area when low frequency operation, and handheld device volume is less, is difficult to the requirement meeting the work of antenna low frequency.
Summary of the invention
The technical problem that the present invention will solve provides a kind of hand-held CMMB terminal, when handheld terminal volume is little, can meet the requirement of antenna low frequency work.
The present invention solves the problems of the technologies described above adopted technical scheme: provide a kind of hand-held CMMB terminal, comprises for receiving sound, vision signal, exports the broadcast unit of corresponding sound and picture; For processing the CMMB signal received, the corresponding sound obtained, vision signal are exported to the processing unit of described broadcast unit; And at least one is for receiving CMMB signal, and the CMMB signal of reception is sent to the antenna of processing unit, this antenna comprises feeder line, sheet metal, described feeder line is by sheet metal described in coupled modes feed-in, described sheet metal is at least engraved asymmetrical first micro groove structure and the second micro groove structure, made described antenna have at least two different resonance band.
Further, described first micro groove structure be complementary opening resonance loop structure, a kind of in complementary helix structure, opening helical ring structure, two opening helical ring structure and complementary folding line structure or derived by several structure above, micro groove structure that compound or group battle array obtain.
Further, described second micro groove structure be complementary opening resonance loop structure, a kind of in complementary helix structure, opening helical ring structure, two opening helical ring structure and complementary folding line structure or derived by several structure above, micro groove structure that compound or group battle array obtain.
Further, described antenna also comprises the medium for placing described feeder line and described sheet metal.
Further, described medium is air, pottery, epoxy resin base plate or ptfe substrate.
Further, described first micro groove structure and described second micro groove structure carve hollow out on described sheet metal by etching, boring quarter, photoetching, electronics quarter or ion.
Further, described feeder line does not contact with described sheet metal, by sheet metal described in the feed-in of capacitive coupling mode.
Further, described feeder line is by can connecting described sheet metal and make described feeder line by sheet metal described in inductive coupled mode feed-in by short circuit point.
Hand-held CMMB terminal of the present invention, relative to existing technology, there is following beneficial effect: the asymmetrical antenna that the hand-held CMMB terminal of the present invention adopts, sheet metal has at least been engraved asymmetric first micro groove structure and the second micro groove structure, therefore, it is possible to produce multiple resonance point easily, and resonance point is not easily offset, be easy to realize multimode resonance.Thus meet the requirement of hand-held CMMB terminal antenna low frequency work.
Accompanying drawing explanation
Fig. 1 is asymmetrical antenna structural representation of the present invention;
Fig. 2 is asymmetrical antenna first better embodiment front view of the present invention;
Fig. 3 is asymmetrical antenna second better embodiment front view of the present invention;
Fig. 4 is asymmetrical antenna of the present invention 3rd better embodiment front view.
Fig. 5 a is the schematic diagram of complementary opening resonance loop structure;
Fig. 5 b is depicted as the schematic diagram of complementary helix structure;
Fig. 5 c is depicted as the schematic diagram of opening helical ring structure;
Fig. 5 d is depicted as the schematic diagram of two opening helical ring structure;
Fig. 5 e is depicted as the schematic diagram of complementary folding line structure;
Fig. 6 a derives schematic diagram for its geometry of complementary opening resonance loop structure shown in Fig. 5 a;
Fig. 6 b is the derivative schematic diagram of its expansion of the complementary opening resonance loop structure shown in Fig. 5 a;
Structural representation after the compound that Fig. 7 a is the complementary opening resonance loop structure shown in three Fig. 5 a;
Fig. 7 b is depicted as the compound schematic diagram of complementary helix structure for the complementary opening resonance loop structure shown in two Fig. 5 a and Fig. 5 b;
Fig. 8 is the structural representation after the complementary opening resonance loop structure group battle array shown in four Fig. 5 a.
Embodiment
The hand-held CMMB terminal that the embodiment of the present invention provides, comprises for receiving sound, vision signal, exports the broadcast unit of corresponding sound and picture; For processing the CMMB signal received, the corresponding sound obtained, vision signal are exported to the processing unit of described broadcast unit; And at least one is for receiving CMMB signal, and the CMMB signal of reception is sent to the antenna of processing unit.Fig. 1 shows asymmetrical antenna structure of the present invention.In Fig. 1, asymmetrical antenna of the present invention comprises feeder line 1, sheet metal 2.Sheet metal 2 is at least engraved asymmetrical first micro groove structure 100 and the second micro groove structure 200, made asymmetrical antenna have at least two different resonance frequencys.Herein asymmetric refers to that the pattern of the first micro groove structure 100 and the second micro groove structure 200, size and/or locus are different, and those differences cause the first micro groove structure 100 different from the resonance band of the second micro groove structure 200.
Feeder line 1 part arranges with to sheet metal 2 couple feed around sheet metal 2.The mode of feeder line 1 pair of sheet metal 2 couple feed can connect feeder line 1 and sheet metal 2 and the inductive coupled feeding classification that formed by short circuit point by arranging one, also for feeder line 1 does not connect with sheet metal 2 but the capacitive coupling feeding classification that the two relative part forms capacitive coupling and formed.
First micro groove structure 100 of the present invention and the second micro groove structure 200 can be the complementary helix structures shown in the complementary opening resonance loop structure shown in Fig. 5 a, Fig. 5 b, a kind of in the two opening helical ring structures shown in the opening helical ring structure shown in Fig. 5 c, Fig. 5 d, the complementary folding line structure shown in Fig. 5 e or derived by several structure above, compound or organize the micro groove structure that battle array obtains.Derive and be divided into two kinds, one is that geometry derives, another kind is that expansion is derivative, and geometry is herein derivative refers to that function class derives like, variform structure, such as, derive to class of a curve structure, triangle class formation and other different polygon class formation by square frame class formation; Namely expansion herein derives offers new groove to form new micro groove structure on the basis of Fig. 5 a to Fig. 5 e; For the complementary opening resonance loop structure shown in Fig. 5 a, Fig. 6 a derives schematic diagram for its geometry, and Fig. 6 b derives schematic diagram for its geometry.Compound herein refers to, the micro groove structure that micro groove structure multiple superposition formation one of Fig. 5 a to Fig. 5 e is new, as shown in Figure 7a, is the structural representation after the complementary opening resonance loop structure compound shown in three Fig. 5 a; As shown in Figure 7b, for the complementary opening resonance loop structure shown in two Fig. 5 a and Fig. 5 b are depicted as the structural representation after the common compound of complementary helix structure.Group battle array herein refers to and forms an overall micro groove structure by the micro groove structure array on same sheet metal shown in multiple Fig. 5 a to Fig. 5 e, as shown in Figure 8, is the structural representation after multiple complementary opening resonance loop structure group battle array as shown in Figure 5 a.But the present invention first micro groove structure 100 and the second micro groove structure 200 are asymmetrical, concrete asymmetric manner describes in detail in execution mode below.
The techniques such as the mode that sheet metal 2 forms the first micro groove structure 100 and the second micro groove structure 200 can be etching, bores quarters, photoetching, electronics quarter, ion quarter, wherein be etched to selection process, its key step is after designing suitable micro groove structure, then by etching machines, the foil parts utilizing the chemical reaction of solvent and metal to get rid of default micro groove structure can obtain the sheet metal 2 being formed with above-mentioned first micro groove structure 100 and the second micro groove structure 200.The material of above-mentioned tinsel can be the metal such as copper, silver.
The present invention also comprises the medium for placing described feeder line and described sheet metal, and medium can be air, pottery, epoxy resin base plate or ptfe substrate.
If the present invention adopts the first symmetrical micro groove structure and the second micro groove structure on sheet metal 2, namely the first micro groove structure is identical with the resonance frequency of the second micro groove structure, antenna Q value will be caused after the two intercouples to increase, and corresponding bandwidth BW diminishes, and is unfavorable for the realization of multimode resonance.And according at least asymmetrical first micro groove structure and the second micro groove structure; the capacitance produced due to the two response electromagnetic wave and inductance value can be different; thus produce multiple different resonance point; and the plurality of different resonance point is not easily offset, be conducive to realizing the abundant multimode of antenna.
First micro groove structure 100 of the present invention can be the same with the version of the second micro groove structure 200, also can be different.And the asymmetric degree of the first micro groove structure 100 and the second micro groove structure 200 can regulate as required.Thus realize abundant adjustable multimode resonance.And as required, the present invention also can arrange number more than the micro groove structure of two with the different resonance band making antenna have more than three on same sheet metal.
Discuss the asymmetric micro groove structure that three kinds of sheet metals 2 of the present invention are formed below in detail.
As shown in Figure 2, Fig. 2 is the front view of the first better embodiment of the present invention, in Fig. 2, first micro groove structure 100 and the second micro groove structure 200 are unsymmetric structure, wherein, first micro groove structure 100 and the second micro groove structure 200 link together, and the difference due to pattern causes the asymmetric of its structure, make the resonance frequency in the first micro groove structure 100 and the respective region of the second micro groove structure 200 different.Illustrate for the derived structure of the complementary helix structure shown in Fig. 5 b and complementary helix structure in present embodiment, the two is interconnected.
As shown in Figure 3, Fig. 3 is the front view of the second better embodiment of the present invention, in Fig. 3, first micro groove structure 100 and the second micro groove structure 200 are the different unsymmetric structure of pattern, wherein, first micro groove structure 100 and the second micro groove structure 200 are that separately independently the difference due to pattern causes the asymmetric of its structure, make the resonance frequency in the first micro groove structure 100 and the respective region of the second micro groove structure 200 different.In present embodiment, the first micro groove structure 100 illustrates for the structure of opening helical ring shown in Fig. 5 c, and the second micro groove structure 200 illustrates for complementary helix structure shown in Fig. 5 b.
As shown in Figure 4, for the front view of the 3rd better embodiment of the present invention, in Fig. 4, first micro groove structure 100 and the second micro groove structure 200 are unsymmetric structure, wherein, the first micro groove structure 100 and the second micro groove structure 200 are that separately independently its pattern is identical, but the difference of its size causes the asymmetric of its structure, make the resonance frequency in the first micro groove structure 100 and the respective region of the second micro groove structure 200 different.In present embodiment, the first micro groove structure 100 and the second micro groove structure 200 all illustrate for the complementary helix structure shown in Fig. 5 c.
The hand-held CMMB terminal that the embodiment of the present invention provides, additionally provides a kind of mimo antenna, and described mimo antenna is made up of multiple above-mentioned antenna.Namely MIMO herein refers to multiple-input and multiple-output.Namely all single antenna in mimo antenna is launched simultaneously, receives simultaneously.Mimo antenna can not need the information throughput and the transmission range that increase considerably system under the prerequisite increasing bandwidth or total transmitted power loss.Mimo antenna of the present invention also has very high isolation in addition, and the antijamming capability between multiple antenna is strong.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, also can make a lot of form, these all belong within protection of the present invention.
Claims (10)
1. a hand-held CMMB terminal, comprises for receiving sound, vision signal, exports the broadcast unit of corresponding sound and picture, it is characterized in that, also comprise: for processing the CMMB signal received, the corresponding sound obtained, vision signal being exported to the processing unit of described broadcast unit, and at least one is for receiving CMMB signal, and the CMMB signal of reception is sent to the antenna of processing unit, this antenna comprises feeder line and sheet metal, described feeding line portion is arranged around described sheet metal, by sheet metal described in coupled modes feed-in, described sheet metal is at least engraved asymmetrical first micro groove structure and the second micro groove structure, described first micro groove structure and described second micro groove structure link together, the pattern of described first micro groove structure and described second micro groove structure, size and/or locus difference, described antenna is made to have at least two different resonance band.
2. terminal as claimed in claim 1, is characterized in that: described first micro groove structure is complementary opening resonance loop structure, complementary helix structure, opening helical ring structure, two opening helical ring structure or complementary folding line structure.
3. terminal as claimed in claim 1, is characterized in that: the micro groove structure that described first micro groove structure is complementary opening resonance loop structure, several structures in complementary helix structure, opening helical ring structure, two opening helical ring structure and complementary folding line structure derive, compound or group battle array obtain.
4. terminal as claimed in claim 1, is characterized in that: described second micro groove structure is complementary opening resonance loop structure, complementary helix structure, opening helical ring structure, two opening helical ring structure or complementary folding line structure.
5. terminal as claimed in claim 1, is characterized in that: the micro groove structure that described second micro groove structure is complementary opening resonance loop structure, several structures in complementary helix structure, opening helical ring structure, two opening helical ring structure and complementary folding line structure derive, compound or group battle array obtain.
6. terminal as claimed in claim 1, is characterized in that: described antenna also comprises the medium for placing described feeder line and described sheet metal.
7. terminal as claimed in claim 6, is characterized in that: described medium is air, pottery, epoxy resin base plate or ptfe substrate.
8. terminal as claimed in claim 1, is characterized in that: described first micro groove structure and described second micro groove structure carve hollow out on described sheet metal by etching, boring quarter, photoetching, electronics quarter or ion.
9. terminal as claimed in claim 1, is characterized in that: described feeder line does not contact with described sheet metal, by sheet metal described in the feed-in of capacitive coupling mode.
10. terminal as claimed in claim 1, is characterized in that: described feeder line is by can connecting described sheet metal and make described feeder line by sheet metal described in inductive coupled mode feed-in by short circuit point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110181084.XA CN102811324B (en) | 2011-06-30 | 2011-06-30 | A kind of hand-held CMMB terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110181084.XA CN102811324B (en) | 2011-06-30 | 2011-06-30 | A kind of hand-held CMMB terminal |
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| Publication Number | Publication Date |
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| CN102811324A CN102811324A (en) | 2012-12-05 |
| CN102811324B true CN102811324B (en) | 2015-12-09 |
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| CN201110181084.XA Expired - Fee Related CN102811324B (en) | 2011-06-30 | 2011-06-30 | A kind of hand-held CMMB terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106329060B (en) * | 2015-06-30 | 2019-04-19 | 比亚迪股份有限公司 | NFC antenna and mobile terminal with it |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201490337U (en) * | 2009-08-31 | 2010-05-26 | 深圳市启汉科技有限公司 | Monopole radio-frequency antenna |
| CN101958460A (en) * | 2009-07-17 | 2011-01-26 | 捷讯研究有限公司 | Multiple-grooved antenna and mobile device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201515009U (en) * | 2009-08-20 | 2010-06-23 | 深圳市麦捷微电子科技股份有限公司 | Patch-type digital video broadcast ceramic antenna |
| CN202121701U (en) * | 2011-06-30 | 2012-01-18 | 深圳光启高等理工研究院 | Handheld CMMB terminal |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101958460A (en) * | 2009-07-17 | 2011-01-26 | 捷讯研究有限公司 | Multiple-grooved antenna and mobile device |
| CN201490337U (en) * | 2009-08-31 | 2010-05-26 | 深圳市启汉科技有限公司 | Monopole radio-frequency antenna |
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| CN102811324A (en) | 2012-12-05 |
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Effective date of registration: 20201111 Address after: 226600 no.428, Zhennan Road, Haian City, Nantong City, Jiangsu Province Patentee after: Haian IC Technology Innovation Center Address before: 518000, No. 9 software building, central high tech Zone, Nanshan District hi tech Zone, Shenzhen, Guangdong, Shenzhen Patentee before: KUANG-CHI INSTITUTE OF ADVANCED TECHNOLOGY Patentee before: KUANG-CHI INNOVATIVE TECHNOLOGY Ltd. |
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Granted publication date: 20151209 |