CN102811374A - Handheld China mobile multimedia broadcasting (CMMB) terminal - Google Patents
Handheld China mobile multimedia broadcasting (CMMB) terminal Download PDFInfo
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- CN102811374A CN102811374A CN2011101810943A CN201110181094A CN102811374A CN 102811374 A CN102811374 A CN 102811374A CN 2011101810943 A CN2011101810943 A CN 2011101810943A CN 201110181094 A CN201110181094 A CN 201110181094A CN 102811374 A CN102811374 A CN 102811374A
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Abstract
The invention relates to a handheld China mobile multimedia broadcasting (CMMB) terminal. The terminal comprises a playing unit, a processing unit and at least one antenna, wherein the playing unit is used for receiving an audio and video signal and outputting a corresponding sound and image; the processing unit is used for processing a received CMMB signal and outputting the acquired corresponding audio and video signal to the playing unit; and at least one antenna is used for receiving the CMMB signal, transmitting the received CMMB signal to the processing unit, wherein each antenna comprises a medium substrate, a feeder line and a metal sheet which is attached to one surface of the medium substrate; the feeder line is fed into the metal sheet in a coupled way; microgroove structures are formed on the metal sheet to form metal passing wires on the metal sheet; the antenna is provided with spaces into which electronic elements are embedded in advance; and therefore, the sound and image are clearly and smoothly played by the handheld CMMB terminal.
Description
Technical field
The invention belongs to the mobile multimedia technical field, particularly, relate to a kind of hand-held CMMB terminal.
Background technology
CMMB (China Mobile Multimedia Broadcasting; China Mobile multimedia broadcasting) system is to utilize high-power S-band satellite-signal to cover the whole nation; Utilize ground supplement translator to cover the satellite-signal blind area with mending point with content repeater satellite signal simultaneously frequently; Utilize mobile radio networks to make up return path, thus the mobile media broadcasting network that composition One-to-All Broadcast and two-way interactive combine.The ground launching centre is sent out signal behind the S-band synchronous satellite; Synchronous satellite is transmitted to the received signal; S-band signal after the forwarding is directly received by the receiving terminal on ground, also can handle the back through supplement translator and received by the receiving terminal on ground.This satellite also sends to supplement translator through distribution channels with signal and handles, and handles the back through supplement translator and transmits, and the shadow region that satellite covers is augmented.
In the prior art, the CMMB system adopts digital technologies such as coding, compression, modulation, is that the portable receiving terminal of small-size screen below 7 cun provides the broadcast TV program service; Mainly contain two big Terminal Types; The one, the communication class terminal, promptly cell phone type hand held television product is called for short mobile TV; Another kind of is non-communication class terminal, like hand held television products such as PDA, MP3, MP4, digital camera, notebook computers.Load onto a special chip as long as various the small screen portable terminal devices add, will become a removable hand held television of watching.But the antenna gain of handheld device is low, and is higher at the performance requirement under the fading environment to system.
Summary of the invention
The technical problem that the present invention will solve is, a kind of hand-held CMMB is provided the terminal, and clear and smooth plays sound and picture more.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of hand-held CMMB is provided the terminal, comprises being used to receive sound, vision signal, the broadcast unit of output corresponding sound and picture; Be used for the CMMB signal that receives is handled the processing unit that exports the corresponding sound that obtains, vision signal to said broadcast unit; And at least one is used to receive the CMMB signal; And the CMMB signal that receives is sent to the antenna of processing unit; This antenna comprises medium substrate, feeder line, attached to the sheet metal on medium substrate one surface; Said feeder line is through the said sheet metal of coupled modes feed-in, and hollow out has micro groove structure on sheet metal, to form metal routing on the said sheet metal, and said antenna is preset with the space that electronic component embeds.
Further, said space is arranged between feeder line, feeder line and the sheet metal and reaches at least one of these three positions of sheet metal.
Further, said space is arranged on the metal routing on the sheet metal.
Further, said space is arranged on the micro groove structure, and connects the metal routing of micro groove structure both sides.
Further, said electronic component is perceptual electronic component, capacitive electronic component or resistance.
Further, said space is the pad that is formed on the said antenna.
Further, the scope of said perceptual electronic component inductance value is between 0-5uH.
Further, the scope of said capacitive electronic component capacitance is between 0-2pF.
Further, said micro groove structure be a kind of in complementary split ring resonator structure, complementary helix structure, opening helical ring structure, two opening helical ring structure and the complementary folding line structure or through several kinds of structures in front derive, compound or a micro groove structure that the group battle array obtains.
Hand-held CMMB of the present invention terminal; With respect to existing technology; Have following beneficial effect: the antenna that the present invention is adopted at hand-held CMMB terminal is through being provided with the space that electronic component embeds at least one of between feeder line, feeder line and the sheet metal and these three positions of sheet metal; Can finely tune the performance of antenna through the performance of the electronic component that change to embed, increase antenna gain, sound and the picture that makes hand-held CMMB terminal plays be clear and smooth more.
Description of drawings
Fig. 1 is an antenna structure view of the present invention;
Fig. 2 is the structural representation of antenna first embodiment of the present invention;
Fig. 3 is the structural representation of antenna second embodiment of the present invention;
Fig. 4 is the structural representation of antenna the 3rd embodiment of the present invention;
Fig. 5 is the structural representation of antenna the 4th embodiment of the present invention;
Fig. 6 is the structural representation of antenna the 5th embodiment of the present invention;
Fig. 7 a is the sketch map of complementary split ring resonator structure;
Fig. 7 b is depicted as the sketch map of complementary helix structure;
Fig. 7 c is depicted as the sketch map of opening helical ring structure;
Fig. 7 d is depicted as the sketch map of two opening helical ring structures;
Fig. 7 e is depicted as the sketch map of complementary folding line structure;
Fig. 8 a is the sketch map of deriving of complementary its geometry of split ring resonator structure shown in Fig. 7 a;
Fig. 8 b is the sketch map of deriving of complementary its expansion of split ring resonator structure shown in Fig. 7 a;
Fig. 9 a is the structural representation behind the complementary split ring resonator structure shown in three Fig. 7 a compound;
Fig. 9 b is the compound sketch map that the complementary split ring resonator structure shown in two Fig. 7 a and Fig. 7 b are depicted as complementary helix structure;
Figure 10 is the structural representation after the complementary split ring resonator structural group battle array shown in four Fig. 7 a.
Embodiment
The hand-held CMMB terminal that the embodiment of the invention provides comprises being used to receive sound, vision signal, the broadcast unit of output corresponding sound and picture; Be used for the CMMB signal that receives is handled the processing unit that exports the corresponding sound that obtains, vision signal to said broadcast unit; And at least one is used to receive the CMMB signal, and the CMMB signal that receives is sent to the antenna of processing unit.Shown in Fig. 1 (adopting the perspective view technique of painting); Said antenna 100 of the present invention comprises medium substrate 1, feeder line 2, attached to the sheet metal 4 on medium substrate 1 one surfaces; Said feeder line 2 is through the said sheet metal 4 of coupled modes feed-in; Hollow out has micro groove structure 41 on sheet metal, to form metal routing 42 on the said sheet metal, and said antenna 100 is preset with the space 6 that electronic component embeds.Among Fig. 1 to Fig. 6, the part of the cross-hatching on the sheet metal 4 is a metal routing 42, the blank parts on the sheet metal 4 (part of hollow out) expression micro groove structure 41.In addition, feeder line 2 is also represented with hatching.
Said micro groove structure 41 among the present invention can be the complementary helix structure shown in the complementary split ring resonator structure shown in Fig. 7 a, Fig. 7 b, a kind of in the two opening helical ring structures shown in the opening helical ring structure shown in Fig. 7 c, Fig. 7 d, the complementary folding line structure shown in Fig. 7 e or through several kinds of structures in front derive, compound or a micro groove structure that the group battle array obtains.Derive and be divided into two kinds; A kind of is that geometry is derived; Another kind is that expansion is derived, and the geometry is here derived and is meant that function class derives like, variform structure, is for example derived to class of a curve structure, triangle class formation and other different polygon class formation by the square frame class formation; The expansion is here derived and promptly on the basis of Fig. 7 a to Fig. 7 e, is offered new groove to form new micro groove structure; Complementary split ring resonator structure with shown in Fig. 7 a is an example, and Fig. 8 a is its geometry sketch map of deriving, and Fig. 8 b is its geometry sketch map of deriving.Compound being meant here, a plurality of stacks of the micro groove structure of Fig. 7 a to Fig. 7 e form a new micro groove structure, shown in Fig. 9 a, are the structural representation of the complementary split ring resonator structure shown in three Fig. 7 a after compound; Shown in Fig. 9 b, be that the complementary split ring resonator structure shown in two Fig. 7 a and Fig. 7 b are depicted as the common structural representation after compound of complementary helix structure.The group battle array here is meant the micro groove structure that is formed an integral body by the micro groove structure array on same sheet metal shown in a plurality of Fig. 7 a to Fig. 7 e, and is shown in figure 10, is the structural representation after a plurality of complementary split ring resonator structural group battle arrays shown in Fig. 7 a.Below be that example is set forth the present invention all with the opening helical ring structure shown in Fig. 7 c.
Divide five embodiment to come to introduce in detail the present invention below.
Embodiment one
As shown in Figure 2, in the present embodiment, on feeder line 2, be preset with the space 51 that embeds perceptual electronic component and/or resistance, the position in preset embedding electronic component space can be the optional position on the feeder line 2, and can have a plurality of.Can in space 51, embed perceptual electronic component, to change the inductance value on the feeder line 2.Using formula:
can know square being inversely proportional to of size and operating frequency of inductance value; So when the operating frequency that needs is when hanging down operating frequency, to realize through suitable embedding inductance or perceptual electronic component.In the present embodiment, the inductance value range of the perceptual electronic component of adding is between 0-5uH, thereby if too big alternating signal will be had influence on the radiation efficiency of antenna by inductive element consumption.The said antenna of present embodiment has the good radiation characteristic of a plurality of frequency ranges; Five main radiation frequencies are distributed to 5.5GHz from 900MHz always; Almost contained each main communication frequencys such as GSM, CDMA, bluetooth, W-Lan (IEEE802.11 agreement), GPS, TD-LTE, had very high integrated level and can reach the purpose that changes operating frequency of antenna through the inductance value on the feeder line is regulated.Certainly, also can be in space 51 embedded resistor, to improve the radiation resistance of antenna.Certainly, the space on the feeder line also can be a plurality of, wherein distinguishes embedded resistor and perceptual electronic component, has both realized the adjusting of operating frequency, can improve the radiation resistance of antenna again.The space available wire short circuit that does not add electronic component.
Embodiment two
As shown in Figure 3, in the present embodiment, between feeder line 2 and sheet metal 4, be preset with the space 53 that embeds the capacitive electronic component, the position in preset embedding electronic component space can be the optional position between feeder line 2 and the sheet metal 4.Space 53 is the space that embeds the capacitive electronic component in the present embodiment among Fig. 3; Itself has certain electric capacity between feeder line 2 and the sheet metal 4; Here regulate the signal coupling between feeder line and the sheet metal 4 through embedding the capacitive electronic component; Using formula:
can know square being inversely proportional to of size and operating frequency of capacitance; So when the operating frequency that needs is when hanging down operating frequency, to realize through suitable embedding electric capacity or perceptual electronic component.In the present embodiment, the capacitance scope of the capacitive electronic component of adding is usually between 0-2pF, but the capacitance that embeds along with the variation of operating frequency of antenna also possibly exceed the scope of 0-2pF.Certainly, also can between feeder line 2 and sheet metal 4, preset a plurality of spaces.Equally, in not being connected with the space of electronic component, adopt the lead short circuit.
Embodiment three
As shown in Figure 4; In the present embodiment; On the metal routing 42 of sheet metal, be reserved with the space that embeds perceptual electronic component and/or resistance, the space that embeds electronic component not only is confined to the space 55 and space 56 that provide among the figure, as long as other positions satisfy condition all can.The purpose that embeds perceptual electronic component here is the inductance value that increases sheet metal internal resonance structure, thus the effect that the resonance frequency and the bandwidth of operation of antenna played adjusting; Identical with embodiment one, the purpose of embedded resistor is to improve the radiation resistance of antenna here.So, then decide as required to embedding perceptual electronic component or resistance.In not embedding the space of electronic component, adopt the lead short circuit in addition.
Embodiment four
As shown in Figure 5, in the present embodiment, on micro groove structure 41, be reserved with the space 57 that embeds the capacitive electronic component, and said space 57 connects the metal routing 42 of micro groove structure 41 both sides.The space that embeds electronic component not only limit to Fig. 5 in the space 57 that provides, as long as other positions satisfy condition all can.Embedding capacitive electronic component can change the resonance performance of sheet metal, the Q value and the resonance working point of finally improving antenna.As common practise, we know that the relation of passband BW and resonance frequency w0 and quality factor q is: BW=wo/Q, and this formula shows that Q more greatly then passband is narrow more, the more little then passband of Q is wide more.Other has: Q=wL/R=1/wRC, and wherein, Q is a quality factor; Supply frequency when w is circuit resonance; L is an inductance; R is the resistance of string; C is an electric capacity, can be known by the Q=wL/R=1/wRC formula, and Q and C are inverse ratio, therefore, can reduce the Q value through adding the capacitive electronic component, and passband is broadened.
Embodiment five
As shown in Figure 6, in the present embodiment, the space that electronic component embeds is set all between feeder line 2, feeder line 2 and the sheet metal 4 and sheet metal 4 these three positions.Wherein, the space on the sheet metal 4 comprises the space that is arranged on the space on the metal routing 42 and is arranged on the micro groove structure 41 and connects the metal routing 42 of both sides.Particularly, the space in the present embodiment comprises the space 61 on the feeder line 2, the space 63 between feeder line 2 and the sheet metal 4; Space 65,66 on the metal routing 42, the space 67 on the micro groove structure 41, certainly; The position that provides in the present embodiment is not a uniqueness, in the present embodiment, in above-mentioned space, adds electronic component to regulate the performance of antenna; The principle of its principle and embodiment one to four is similar, and present embodiment is no longer described.
The reserved location in space is not limited to above-mentioned five kinds of forms on the antenna 100 of the present invention, as long as the space is arranged on the antenna.For example, the space can also be arranged on the medium substrate.
Said electronic component of the present invention is perceptual electronic component, capacitive electronic component or resistance.After in the headspace of antenna, adding this type of electronic component, can improve the various performances of antenna.And, can realize the adjustable of antenna performance parameters through adding the electronic component of different parameters.Therefore; Antenna of the present invention can be the same structure before not adding any element; Just through adding different electronic components, and the parameter of electronic component (inductance value, resistance value, capacitance), realize the performance parameter of different antennae at diverse location.Promptly realized versatility.Can significantly reduce production costs.
Said space of the present invention can be a pad, also can be a vacancy.Pad configuration can be referring to the pad on the common circuit board.Certainly, the needs that the design consideration of its size is different can be different.
In addition, among the present invention, medium substrate is processed by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.Preferably, being processed by macromolecular material, can be macromolecular materials such as FR-4, F4B particularly.
Among the present invention, sheet metal is copper sheet or silver strip.Be preferably copper sheet, cheap, conduct electricity very well.
Among the present invention, feeder line is selected for use with the same material of sheet metal and is processed.Be preferably copper.
Among the present invention,,, can adopt various manufactures as long as satisfy design principle of the present invention about the processing and manufacturing of antenna.Prevailing method is to use the manufacturing approach of all kinds of printed circuit board (PCB)s (PCB), certainly, metallized through hole, the PCB of double-sided copper-clad makes also can satisfy processing request of the present invention.Remove this processing mode; Can also introduce other manufacturing process according to the needs of reality; (RFID is the abbreviation of Radio Frequency Identification such as RFID; Be REID, be commonly called as electronic tag) but in the processing mode that makes up of processing mode and iron plate and the PCB of flexible PCB processing, iron plate antenna of employed conductive silver paste printing ink processing mode, all kinds of deformation devices.Wherein, iron plate and PCB combination processing mode is meant that the accurate processing that utilizes PCB accomplishes the processing of antenna micro groove structure, accomplishes other slave part with iron plate.In addition, can also process through etching, plating, brill quarter, photoetching, electronics is carved or ion is carved method.
The hand-held CMMB terminal that the embodiment of the invention provides also provides a kind of MIMO antenna, and described MIMO antenna is made up of a plurality of above-mentioned antennas 100.The MIMO here promptly is meant multiple-input and multiple-output.Be that all single antennas 100 on the MIMO antenna are launched simultaneously, receive simultaneously.The MIMO antenna can increase considerably the information throughput and the transmission range of system under the prerequisite that need not increase bandwidth or total transmitted power loss.MIMO antenna of the present invention in addition also has very high isolation, and the antijamming capability between a plurality of antennas is strong.
MIMO antenna of the present invention, the feeder line of its each antenna 100 all is connected with processing unit.
Combine accompanying drawing that embodiments of the invention are described above; But the present invention is not limited to above-mentioned embodiment, and above-mentioned embodiment only is schematically, rather than restrictive; Those of ordinary skill in the art is under enlightenment of the present invention; Not breaking away under the scope situation that aim of the present invention and claim protect, also can make a lot of forms, these all belong within the protection of the present invention.
Claims (10)
1. a hand-held CMMB terminal comprises being used to receive sound, vision signal, the broadcast unit of output corresponding sound and picture; It is characterized in that, also comprise: be used for the CMMB signal that receives is handled the processing unit that exports the corresponding sound that obtains, vision signal to said broadcast unit; And at least one is used to receive the CMMB signal; And the CMMB signal that receives is sent to the antenna of processing unit; This antenna comprises medium substrate, feeder line, attached to the sheet metal on medium substrate one surface; Said feeder line is through the said sheet metal of coupled modes feed-in, and hollow out has micro groove structure on sheet metal, to form metal routing on the said sheet metal, and said antenna is preset with the space that electronic component embeds.
2. terminal according to claim 1 is characterized in that, said space is arranged between feeder line, feeder line and the sheet metal and reaches at least one of these three positions of sheet metal.
3. terminal according to claim 2 is characterized in that said space is arranged on the metal routing on the sheet metal.
4. terminal according to claim 2 is characterized in that said space is arranged on the micro groove structure, and connects the metal routing of micro groove structure both sides.
5. according to any described terminal of claim 1 to 4, it is characterized in that said electronic component is perceptual electronic component, capacitive electronic component or resistance.
6. terminal according to claim 5 is characterized in that, said space is the pad that is formed on the said antenna.
7. terminal according to claim 5 is characterized in that the scope of said perceptual electronic component inductance value is between 0-5uH.
8. terminal according to claim 5 is characterized in that, the scope of said capacitive electronic component capacitance is between 0-2pF.
9. terminal according to claim 1 is characterized in that, said micro groove structure is complementary split ring resonator structure, complementary helix structure, opening helical ring structure, two opening helical ring structure, or complementary folding line structure.
10. terminal according to claim 1; It is characterized in that said micro groove structure is that several kinds of structures in complementary split ring resonator structure, complementary helix structure, opening helical ring structure, two opening helical ring structure and the complementary folding line structure are derived, the compound or group gust micro groove structure that obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101810943A CN102811374A (en) | 2011-06-30 | 2011-06-30 | Handheld China mobile multimedia broadcasting (CMMB) terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101810943A CN102811374A (en) | 2011-06-30 | 2011-06-30 | Handheld China mobile multimedia broadcasting (CMMB) terminal |
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| CN102811374A true CN102811374A (en) | 2012-12-05 |
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| CN2011101810943A Pending CN102811374A (en) | 2011-06-30 | 2011-06-30 | Handheld China mobile multimedia broadcasting (CMMB) terminal |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101111972A (en) * | 2005-01-27 | 2008-01-23 | 株式会社村田制作所 | Antenna and wireless communication device |
| CN101715615A (en) * | 2007-02-15 | 2010-05-26 | 艾斯特里克有限公司 | Antenna configured for low frequency applications |
| CN101740862A (en) * | 2008-11-20 | 2010-06-16 | 东莞市启汉电子科技有限公司 | Dipole antenna of RF chip |
-
2011
- 2011-06-30 CN CN2011101810943A patent/CN102811374A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101111972A (en) * | 2005-01-27 | 2008-01-23 | 株式会社村田制作所 | Antenna and wireless communication device |
| CN101715615A (en) * | 2007-02-15 | 2010-05-26 | 艾斯特里克有限公司 | Antenna configured for low frequency applications |
| CN101740862A (en) * | 2008-11-20 | 2010-06-16 | 东莞市启汉电子科技有限公司 | Dipole antenna of RF chip |
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Application publication date: 20121205 |