CN202160229U - Vehicle-loaded CMMB terminal - Google Patents
Vehicle-loaded CMMB terminal Download PDFInfo
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- CN202160229U CN202160229U CN2011202273645U CN201120227364U CN202160229U CN 202160229 U CN202160229 U CN 202160229U CN 2011202273645 U CN2011202273645 U CN 2011202273645U CN 201120227364 U CN201120227364 U CN 201120227364U CN 202160229 U CN202160229 U CN 202160229U
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Abstract
The utility model relates to a vehicle-loaded CMMB terminal. The vehicle-loaded CMMB terminal comprises a receiving unit, a processing unit and at least one antenna. The receiving unit is used for demodulating digital television radio frequency signals, and outputting audio and video data flow. The processing unit is used for decoding the audio and video data flow output by the receiving unit, and outputting corresponding audio and video signals. The at least one antenna is connected with the receiving unit. The antenna comprises a medium substrate, a feed line and a metal sheet adhered on one surface of the medium substrate. The feed line is fed in the metal sheet in a coupling manner. A micro-groove structure is hollowed on the metal sheet so that a metal wiring is formed on the metal sheet. The antenna is preset with a space for an electronic component to be embedded. Therefore, the beauty of the vehicle-loaded CMMB terminal is enhanced and the experience of a user is increased.
Description
Technical field
The utility model belongs to multimedia technology field, particularly, relates to a kind of vehicle-mounted 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, CMMB also has application very widely at the back dress and the preceding assembling system of automobile.The vehicle-mounted machine top box mainly comprises: receiving element links to each other the DTV radiofrequency signal that the demodulation car antenna obtains, the sound, the video data stream that comprise in the output DTV radiofrequency signal with external car antenna; Processing unit is decoded to sound, video data stream that receiving element is exported, and exports corresponding sound, vision signal.This STB receives sound, the vision signal of processing unit output through external broadcast unit, output respective digital sound of television and picture.
The inventor finds that in to prior art research and practice process existing vehicle-mounted CMMB device antenna mainly adopts the antenna of external, reduces aesthetics, and trouble is installed, and influences user experience.
The utility model content
The technical problem that the utility model will solve is, a kind of vehicle-mounted CMMB is provided the terminal, can antenna be built in the CMMB terminal, thereby strengthen aesthetics, improves user experience.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of vehicle-mounted CMMB terminal comprises being used for demodulation DTV radiofrequency signal the receiving element of output sound, video data stream; Sound, video data stream to receiving element output are decoded, and export corresponding sound, Video signal processing unit; Also comprise the antenna that at least one is connected with said receiving element; 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; 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.
The utility model technical scheme is built-in with antenna, thereby strengthens aesthetics, improves user experience.In addition; The utility model antenna is with respect to existing antenna; Have following beneficial effect: through between feeder line, feeder line and the sheet metal, and at least one of these three positions of sheet metal on the space that electronic component embeds is set; Can finely tune the performance of antenna through the performance that changes the electronic component that embeds, design the antenna of the requirement of satisfying adaptability and versatility.
Description of drawings
Fig. 1 is the antenna structure view of the utility model;
Fig. 2 is the structural representation of antenna first embodiment of the utility model;
Fig. 3 is the structural representation of antenna second embodiment of the utility model;
Fig. 4 is the structural representation of antenna the 3rd embodiment of the utility model;
Fig. 5 is the structural representation of antenna the 4th embodiment of the utility model;
Fig. 6 is the structural representation of antenna the 5th embodiment of the utility model;
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
A kind of vehicle-mounted CMMB terminal that the utility model embodiment provides comprises being used for demodulation DTV radiofrequency signal, the receiving element of output sound, video data stream; Sound, video data stream to receiving element output are decoded, and export corresponding sound, Video signal processing unit; And at least one antenna that is connected with receiving element.The vehicle-mounted CMMB terminal that the utility model embodiment provides through built-in or external broadcast unit, receives sound, the vision signal of processing unit output, output respective digital sound of television and picture.
The antenna that the utility model embodiment provides is shown in Fig. 1 (adopting the perspective view technique of painting); Antenna 100 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 in the utility model 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 utility model all with the opening helical ring structure shown in Fig. 7 c.
Divide five embodiment to come to introduce in detail the utility model below.
First embodiment
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 utility model, as long as the space is arranged on the antenna.For example, the space can also be arranged on the medium substrate.
The said electronic component of the utility model 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; The antenna of the utility model 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.
The said space of the utility model 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, in the utility model, 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.
In the utility model, sheet metal is copper sheet or silver strip.Be preferably copper sheet, cheap, conduct electricity very well.
In the utility model, feeder line is selected for use with the same material of sheet metal and is processed.Be preferably copper.
In the utility model,,, can adopt various manufactures as long as satisfy the design principle of the utility model 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 the processing request that also can satisfy the utility model.Remove this processing mode; Can also introduce other manufacturing process according to the needs of reality; (RFID is the abbreviation of Radio FrequencyIdentification 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 vehicle-mounted CMMB terminal that the utility model embodiment provides also provides the antenna of being made up of a plurality of above-mentioned antennas 100, and all the single antennas 100 on this antenna receive simultaneously simultaneously and send.This antenna can increase considerably the information throughput of system under the prerequisite that need not increase bandwidth, and has very high isolation, and the antijamming capability between a plurality of antennas is strong.First feeder line of each antenna 100 and second feeder line are connected with receiving element after being electrically connected again.
Combine accompanying drawing that the embodiment of the utility model is described above; But the utility model 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 the enlightenment of the utility model; Not breaking away under the scope situation that the utility model aim and claim protect, also can make a lot of forms, these all belong within the protection of the utility model.
Claims (10)
1. a vehicle-mounted CMMB terminal comprises being used for demodulation DTV radiofrequency signal, the receiving element of output sound, video data stream; Sound, video data stream to receiving element output are decoded, and export corresponding sound, Video signal processing unit; It is characterized in that; Also comprise the antenna that at least one is connected with said receiving element; 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 terminal also comprises: broadcast unit is used to receive sound, the vision signal that processing unit is exported, output respective digital sound of television and picture.
3. 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.
4. terminal according to claim 3 is characterized in that said space is arranged on the metal routing on the sheet metal.
5. terminal according to claim 3 is characterized in that said space is arranged on the micro groove structure, and connects the metal routing of micro groove structure both sides.
6. according to any described terminal of claim 1 to 5, it is characterized in that said electronic component is perceptual electronic component, capacitive electronic component or resistance.
7. terminal according to claim 6 is characterized in that, said space is the pad that is formed on the said antenna.
8. terminal according to claim 6 is characterized in that the scope of said perceptual electronic component inductance value is between 0-5uH.
9. terminal according to claim 6 is characterized in that, the scope of said capacitive electronic component capacitance is between 0-2pF.
10. terminal according to claim 1; It is characterized in that said micro groove structure is that in complementary split ring resonator structure, complementary helix structure, opening helical ring structure, two opening helical ring structure and the complementary folding line structure one or several are derived, compound or a micro groove structure that the group battle array obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202273645U CN202160229U (en) | 2011-06-30 | 2011-06-30 | Vehicle-loaded CMMB terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202273645U CN202160229U (en) | 2011-06-30 | 2011-06-30 | Vehicle-loaded CMMB terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202160229U true CN202160229U (en) | 2012-03-07 |
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ID=45767850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202273645U Expired - Lifetime CN202160229U (en) | 2011-06-30 | 2011-06-30 | Vehicle-loaded CMMB terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202160229U (en) |
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2011
- 2011-06-30 CN CN2011202273645U patent/CN202160229U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 518057 2, building 9, hi tech middle 1, Nanshan District high tech Zone, Shenzhen, Guangdong. Co-patentee after: Shenzhen Kuang-Chi Innovation Technology Co., Ltd. Patentee after: Shenzhen Kuang-Chi Institute of Advanced Technology Address before: 518000 software building 9, hi tech middle 1, central high tech Zone, Shenzhen, Guangdong, China. Co-patentee before: Shenzhen Kuang-Chi Innovation Technology Co., Ltd. Patentee before: Shenzhen Kuang-Chi Institute of Advanced Technology |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120307 |