CN102798872B - Navigation device - Google Patents
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- CN102798872B CN102798872B CN201110144860.9A CN201110144860A CN102798872B CN 102798872 B CN102798872 B CN 102798872B CN 201110144860 A CN201110144860 A CN 201110144860A CN 102798872 B CN102798872 B CN 102798872B
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Abstract
The invention discloses a navigation device, which comprises an antenna, wherein the antenna comprises a dielectric substrate, a first metal sheet and a second metal sheet which are attached to the dielectric substrate, a first feeder line and a second feeder line which encircle the first metal sheet, and a third feeder line and a fourth feeder line which encircle the second metal sheet, wherein a first micro slot structure and a second micro slot structure which are asymmetric with each other are hollowed out in the first metal sheet, so that a first metal route is formed on the first metal sheet; a third micro slot structure and a fourth micro slot structure which are asymmetric with each other are hollowed out in the second metal sheet, so that a second metal route is formed on the second metal sheet; the first feeder line is electrically connected with the third feeder line; the second feeder line is electrically connected with the fourth feeder line; and a space for embedding an electronic element is formed in the antenna. Due to the space for embedding the electronic element is formed in the antenna, various optimizations can be made for a transmitting and receiving circuit of the antenna by changing the performance of the embedded electronic element, and the antenna meeting the requirements on the applicability and the universality can be designed.
Description
Technical field
The present invention relates to a kind of navigation field, particularly relate to a kind of GPS navigation device.
Background technology
Along with the made rapid progress of GPS (Global Positioning System) technology and the universal of application, most importantly GPS is boats and ships, and automobile, the moving objects such as aircraft position navigation.Current, utilize many base station networks real time dynamic differential method (Real-time Kinematic, RTK) continuous operation satnav service neutralized system (Continuous Operational Reference System, CORS) that technology is set up has become one of Hot spots for development of GPS Urban application.As everyone knows, civilian GPS (Global Positioning System) frequency of operation is respectively 1575.42MHZ, and electromagnetic wave signal is adopted as circular polarized wave, therefore navigation instrument needs to be equipped with high efficiency Circular Polarisation wave antenna to ensure to receive Navsat electromagnetic wave signal.
Existing navigation instrument majority adopts built-in microstrip antenna, and microstrip antenna is on dielectric plate, arrange rectangle or circular radiation paster, this microstrip antenna narrow bandwidth and frequency is low.Although above-mentioned microstrip antenna is applicable to large-scale production.But, change whenever and wherever possible because navigation instrument obtains working environment, terrain environment more complicated, often run into calamity market place builet below the ground, hillside landform, tunnel, groups of building etc. to close or semiclosed occasion, electromagnetic wave signal conductively-closed decays, or through various losses such as diffracted reflections, cause microstrip antenna receiving and transmitting signal sensitivity decrease in navigation instrument; And microstrip antenna in working order under electric signal can not be converted into completely to extraradial electromagnetic wave signal, also there is the loss of energy, as the dielectric loss of circuit board, the coupled radiation interference etc. of antenna ambient electron element.Traditional antenna design method is that the transmission circuit coupling of the structure of antenna or antenna has been made various optimization, but or can not solve the problem very well.
Summary of the invention
Technical matters to be solved by this invention is to improve the low and problems such as inefficiency of GPS navigation device sensitivity, so propose one to design high sensitivity and high-level efficiency GPS navigation device.
The antenna that a kind of guider comprises a pcb board and is connected with pcb board, described antenna is provided with publicly and feeding point, described antenna comprises medium substrate, be attached to the first sheet metal and second sheet metal on relative two surfaces of medium substrate, first sheet metal is provided with the first feeder line, second feeder line, second sheet metal is provided with the 3rd feeder line, 4th feeder line, described first feeder line and the second feeder line are all by the first sheet metal described in coupling scheme feed-in, described 3rd feeder line and the 4th feeder line are all by the second sheet metal described in coupling scheme feed-in, on described first sheet metal, hollow out has asymmetrical first micro groove structure and the second micro groove structure to form the first metal routing on the first sheet metal, on described second sheet metal, hollow out has asymmetrical 3rd micro groove structure and the 4th micro groove structure to form the second metal routing on the second sheet metal, described first feeder line is electrically connected with the 3rd feeder line, described second feeder line is electrically connected with the 4th feeder line, described antenna is preset with the space that electronic component embeds.
Further, described spatial placement the first feeder line, the second feeder line, between the first feeder line and the first sheet metal, between the second feeder line and the first sheet metal and these five positions of the first sheet metal at least one on.
Further, described spatial placement the 3rd feeder line, the 4th feeder line, between the 3rd feeder line and the second sheet metal, between the 4th feeder line and the second sheet metal and these five positions of the second sheet metal at least one on.
Further, on first metal routing of described spatial placement on the first sheet metal, or described spatial placement is on the first micro groove structure and/or the second micro groove structure.
Further, on second metal routing of described spatial placement on the second sheet metal, or described spatial placement is on the 3rd micro groove structure and/or the 4th micro groove structure.
Further, described electronic component is perceptual electronic component, capacitive electrical element or resistance.
Further, described space is be formed in the pad on described antenna.
Further, the scope of described perceptual electronic component inductance value is between 0-5uH.
Further, the scope of described capacitive electrical component capacitance value is between 0-2pF.
Further, described antenna is connected by screw connection manner pcb board.
By increasing above-mentioned antenna at guider, by arranging the space that electronic component embeds on antenna, various optimization can be made by the transmission circuit coupling of performance to antenna changing the electronic component embedded, design the antenna of the requirement meeting adaptability and versatility.In addition, medium substrate two sides is provided with sheet metal, takes full advantage of the spatial area of antenna, and antenna can work under lower frequency of operation in such circumstances, meets the requirement of antenna miniaturization, low frequency of operation, broadband multimode.Platform is provided for guider being set up new business.
Meanwhile, above-mentioned Antenna Construction Design makes its receiving signal sensitivity strengthen further, reduces the coupled radiation interference etc. of antenna ambient electron element, ensure that guider receives complete and electromagnetic wave information accurately.
Accompanying drawing explanation
Fig. 1 is the side, sectional schematic drawing of the guider of an embodiment in the present invention;
Fig. 2 is the stereographic map of the embodiment of antenna first shown in Fig. 1;
Fig. 3 is another visual angle figure of antenna shown in Fig. 2;
The structural representation of Fig. 4 antenna second of the present invention embodiment;
The structural representation of Fig. 5 antenna of the present invention 3rd embodiment;
Fig. 6 a is the schematic diagram of complementary opening resonance loop structure;
Fig. 6 b is depicted as the schematic diagram of complementary helix structure;
Fig. 6 c is depicted as the schematic diagram of opening helical ring structure;
Fig. 6 d is depicted as the schematic diagram of two opening helical ring structure;
Fig. 6 e is depicted as the schematic diagram of complementary folding line structure;
Fig. 7 a derives schematic diagram for its geometric configuration of complementary opening resonance loop structure shown in Fig. 6 a;
Fig. 7 b is the derivative schematic diagram of its expansion of the complementary opening resonance loop structure shown in Fig. 6 a;
Structural representation after the compound that Fig. 8 a is the complementary opening resonance loop structure shown in three Fig. 6 a;
Fig. 8 b is depicted as the compound schematic diagram of complementary helix structure for the complementary opening resonance loop structure shown in two Fig. 6 a and Fig. 6 b;
Fig. 9 is the structural representation after the complementary opening resonance loop structure group battle array shown in four Fig. 6 a.
Embodiment
Meta Materials is arranged in media substrate according to ad hoc fashion by artificial metal's conducting strip with certain pattern form.The pattern form that artificial metal's conducting strip is different and arrangement mode make Meta Materials have different specific inductive capacity and different magnetic permeabilities thus make Meta Materials have different electromagnetic responses.Wherein, when this artificial metal's conducting strip is in resonance band, this artificial metal's conducting strip will show the dispersion characteristics of height, and the dispersion characteristics of so-called height refer to the impedance of this artificial metal's conducting strip, hold perception, equivalent specific inductive capacity and magnetic permeability along with frequency, and violent change can occur.
The present invention utilizes above-mentioned principle, designs a kind of antenna assembly of multi-mode working.Conductive foil is attached on medium substrate by it, then conductive foil is engraved partially conductive thin slice to form given shape.Highly dispersed characteristic due to given shape conductive foil make antenna have abundant radiation characteristic thus the design eliminating impedance matching network to realize antenna miniaturization and multimode chemical industry operation mode.
Please refer to Fig. 1, the antenna 100 that described guider 10 comprises a housing 99, is arranged at the pcb board 98 in described housing 99 and is connected with pcb board 98.Described antenna 100 based on above-mentioned meta-material principle design and be fixed on a jiao of pcb board 98 by screw connection manner.In other embodiments, the conductive foil of antenna 100 given shape also can directly be printed on described pcb board 98.
As shown in Figures 2 and 3, described antenna 100 comprises medium substrate 1, be attached to first sheet metal 4 and second sheet metal 7 on relative two surfaces of medium substrate 1, first sheet metal 4 is provided with the first feeder line 2, second feeder line 3, second sheet metal 7 is provided with the 3rd feeder line 8, 4th feeder line 9, described first feeder line 2 and the second feeder line 3 are all by the first sheet metal 4 described in coupling scheme feed-in, described 3rd feeder line 8 and the 4th feeder line 9 are all by the second sheet metal 7 described in coupling scheme feed-in, on described first sheet metal 4, hollow out has asymmetrical first micro groove structure 41 and the second micro groove structure 42 to form the first metal routing 43 on the first sheet metal, on described second sheet metal 7, hollow out has asymmetrical 3rd micro groove structure 71 and the 4th micro groove structure 72 to form the second metal routing 73 on the second sheet metal, described first feeder line 2 is electrically connected with the 3rd feeder line 8, described second feeder line 3 is electrically connected with the 4th feeder line 9, described antenna 100 is preset with the space 6 that electronic component embeds.On the two sides of same medium substrate, all sheet metal is set, is equivalent to and adds antenna physical length (physical length size does not increase), so just can design the radio-frequency antenna be operated under very low operation frequency in minimum space.Solve the physical constraints of traditional antenna antenna controlled space area when low frequency operation.
As seen in figures 2 and 3, described first feeder line 2 is electrically connected by the plated-through hole 10 opened on medium substrate 1 with the 3rd feeder line 8, and described second feeder line 3 is electrically connected by the plated-through hole 20 opened on medium substrate 1 with the 4th feeder line 9.
In Fig. 2 to Fig. 5, the part of the first sheet metal cross-hatching is the first metal routing, and the blank parts (part of hollow out) on the first sheet metal represents the first micro groove structure 41 and the second micro groove structure 42.In addition, the first feeder line and the second feeder line also represent with profile line.Same, the part of the second sheet metal cross-hatching is the second metal routing, and the blank parts (part of hollow out) on the second sheet metal represents the 3rd micro groove structure 71 and the 4th micro groove structure 72.In addition, the 3rd feeder line and the 4th feeder line also represent with profile line.
Fig. 2 is the stereographic map of antenna, and Fig. 3 is its another visual angle figure.Comprehensive two figure can find out, the structure that a surface of medium substrate and b adhere on the surface is identical.Namely the first feeder line, the second feeder line, the projection of the first sheet metal on b surface overlap with the 3rd feeder line, the 4th feeder line, the second sheet metal respectively.Certainly, this is a preferred scheme, and a surface as required also can be different from the structure on b surface.
First feeder line 2 and the second feeder line 3 all arrange to realize signal coupling around the first sheet metal 4.Other first sheet metal 4 can contact with the second feeder line 3 with the first feeder line 2, also can not contact.When the first sheet metal 4 contacts with the first feeder line 2, inductive coupled between the first feeder line 2 and the first sheet metal 4; When the first sheet metal 4 does not contact with the first feeder line 2, capacitive coupling between the first feeder line 2 and sheet metal 4.Equally, when the first sheet metal 4 contacts with the second feeder line 3, inductive coupled between the second feeder line 3 and the first sheet metal 4; When the first sheet metal 4 does not contact with the second feeder line 3, capacitive coupling between the second feeder line 3 and the first sheet metal 4.
3rd feeder line 8 and the 4th feeder line 9 all arrange to realize signal coupling around the second sheet metal 7.Other second sheet metal 7 can contact with the 3rd feeder line 8, the 4th feeder line 9, also can not contact.When the second sheet metal 7 contacts with the 3rd feeder line 8, inductive coupled between the 3rd feeder line 8 and the second sheet metal 7; When the second sheet metal 7 does not contact with the 3rd feeder line 8, capacitive coupling between the 3rd feeder line 8 and sheet metal 7.Equally, when the second sheet metal 7 contacts with the 4th feeder line 9, inductive coupled between the 3rd feeder line 8 and two sheet metals 7; When two sheet metals 7 do not contact with the 4th feeder line 9, capacitive coupling between the 4th feeder line 9 and the second sheet metal 7.
In the present invention, first sheet metal of described medium substrate two apparent surface can be connected with the second sheet metal, also can not connect.Under the first sheet metal and the unconnected situation of the second sheet metal, by capacitively coupled mode feed between described first sheet metal and the second sheet metal; In such cases, the thickness by changing medium substrate can realize the resonance of the first sheet metal and the second sheet metal.(be such as connected by the form of wire or plated-through hole) when the first sheet metal is electrically connected with the second sheet metal, by inductive coupled mode feed between described first sheet metal and the second sheet metal.
Described first micro groove structure 41, second micro groove structure 42 in the present invention, the 3rd micro groove structure 71, the 4th micro groove structure 72 can be the complementary helix structures shown in the complementary opening resonance loop structure shown in Fig. 6 a, Fig. 6 b, a kind of in the two opening helical ring structures shown in the opening helical ring structure shown in Fig. 6 c, Fig. 6 d, the complementary folding line structure shown in Fig. 6 e or derived by several structure above, micro groove structure that compound or group battle array obtain.Derive and be divided into two kinds, one is that geometric configuration derives, another kind is that expansion is derivative, and geometric configuration 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. 6 a to Fig. 6 e; For the complementary opening resonance loop structure shown in Fig. 6 a, Fig. 7 a derives schematic diagram for its geometric configuration, and Fig. 7 b derives schematic diagram for its geometric configuration.Compound herein refers to, the micro groove structure that micro groove structure multiple superposition formation one of Fig. 6 a to Fig. 6 e is new, as shown in Figure 8 a, is the structural representation after the complementary opening resonance loop structure compound shown in three Fig. 6 a; As shown in Figure 8 b, for the complementary opening resonance loop structure shown in two Fig. 6 a and Fig. 6 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. 6 a to Fig. 6 e, as shown in Figure 9, is the structural representation after multiple complementary opening resonance loop structure group battle array as shown in Figure 6 a.All set forth the present invention for the opening helical ring structure shown in Fig. 6 c below.
We know, can being obtained the antenna of different polarization mode, therefore, in the present invention, can obtain dual polarized antenna by changing the first feeder line from the 3rd feeder line, the second feeder line and the different of the 4th feeder line feed placement by the feed placement changing feeder line.Because the polarization mode of antenna has two classes: one is linear polarization, one is circular polarisation, and wherein linear polarization is divided into horizontal polarization and vertical polarization; Circular polarisation is divided into left-hand circular polarization and right-handed circular polarization.Such as, the feeding classification of the first feeder line and the 3rd feeder line is left-hand circular polarization, the feeding classification of the second feeder line and the 4th feeder line is vertical polarization, and above-mentioned polarization mode can be carried out composite design according to different needs by often kind of polarization mode, to realize the antenna of corresponding function.Such as, a kind of polarization mode in left-hand circular polarization and vertical polarization is only for receiving electromagnetic wave, and another kind of polarization mode is used for emitting electromagnetic wave; A kind of polarization mode in left-hand circular polarization and vertical polarization is only for receiving electromagnetic wave, and another kind of polarization mode is for transmitting and receiving electromagnetic wave; Two kinds of polarization modes in left-hand circular polarization and vertical polarization all for transmitting and receiving electromagnetic wave, the above combination embodiment just listing some dual polarization modes.
In the present invention, described space 6 be arranged between the first feeder line 2, second feeder line 3, first feeder line 2 and the first sheet metal 4, between the second feeder line 3 and the first sheet metal 4 and first these five positions of sheet metal 4 at least one on.Described space 6 be also arranged on the 3rd feeder line 8, the 4th feeder line 9, between the 3rd feeder line 8 and the second sheet metal 7, between the 4th feeder line 9 and the second sheet metal 7 and second these five positions of sheet metal 7 at least one on.Preferably, the setting of multiple space 6 on antenna as shown in Figures 1 and 2, namely, on a face of medium substrate, the space 6 that electronic component embeds all is set between the first feeder line 2, second feeder line 3, first feeder line 2 and the first sheet metal 4, between the second feeder line 3 and the first sheet metal 4 and on these five positions of the first sheet metal 4.Wherein, space on first sheet metal 4 comprises the space be arranged on the first metal routing 43, and the space 6 be arranged on the first micro groove structure 41 and the second micro groove structure 42, and the space 6 be arranged on the first micro groove structure 41 and the second micro groove structure 42 connects the first metal routing 43 edge of both sides respectively.Equally, on the b face of medium substrate, at the 3rd feeder line 8, the 4th feeder line 9, the space that electronic component embeds all is set between the 3rd feeder line 8 and the 4th sheet metal 4, between the 4th feeder line 9 and the second sheet metal 7 and on these five positions of the second sheet metal 7.Wherein, space on second sheet metal 7 comprises the space be arranged on the second metal routing 73, and the space be arranged on the 3rd micro groove structure 71 and the 4th micro groove structure 72, and the space 6 be arranged on the 3rd micro groove structure 71 and the 4th micro groove structure 72 connects the second metal routing 73 edge of both sides respectively.
On antenna 100 of the present invention, the reserved location in space is not limited to above-mentioned several form, as long as space is arranged on dual polarized antenna.Such as, space can also be arranged on medium substrate.
Described electronic component of the present invention is perceptual electronic component, capacitive electrical element or resistance.Add this type of electronic component in the headspace of antenna after, the various performances of antenna can be improved.And by adding the electronic component of different parameters, the adjustable of antenna performance parameters can be realized.Add electronic component in space and can have following several situation, because the b face of medium substrate is identical with a face, therefore only to explain with a face below:
(1) in the space of the first feeder line, the second feeder line, perceptual electronic component is added, using formula:
square being inversely proportional to of the size of known inductance value and frequency of operation, so when the frequency of operation needed be lower frequency of operation, can by suitable embedding inductance or the realization of perceptual electronic component.The inductance value range of the perceptual electronic component added preferably between 0-5uH because, if the too large alternating signal of inductance value will be consumed by perceptual electronic component thus have influence on the radiation efficiency of antenna.Certainly also resistance may be added to improve the radiation resistance of antenna in the space on the first feeder line, the second feeder line.Certainly, the first feeder line and the second feeder line also can arrange multiple space, wherein segment space embedded resistor, segment space embeds perceptual electronic component, has both achieved the adjustment of frequency of operation, can improve again the radiation resistance of antenna.Certainly according to other needs, also only electronic component can be added in segment space, other space wire short circuit.
(2) capacitive electrical element is embedded in the space between the first feeder line 2 and the first sheet metal 4, between the second feeder line 3 and the first sheet metal 4.Here by embedding the signal coupling between capacitive electrical element regulation first feeder line 2, second feeder line 3 and the first sheet metal 4, using formula:
square being inversely proportional to, so when the frequency of operation needed is lower frequency of operation, can be realized by suitable embedding capacitive electrical element of the size of known capacitance and frequency of operation.The capacitance value range of the capacitive electrical element added is usually between 0-2pF, but the capacitance embedded along with the change of operating frequency of antenna also may exceed the scope of 0-2pF.Certainly, also can preset multiple space between the first feeder line 2, second feeder line 3 and the first sheet metal 4, in the space not being connected with electronic component, adopt wire short circuit.
(3) have in the space 6 on the first metal routing 43 of the first sheet metal and embed perceptual electronic component and/or resistance.The object embedding perceptual electronic component is herein the inductance value of increase by first sheet metal internal resonant structure, thus plays the effect of adjustment to the resonance frequency of antenna and bandwidth of operation; The object of embedded resistor improves the radiation resistance of antenna herein.So to embedding perceptual electronic component or resistance, then determine as required.In addition in the space not embedding electronic component, adopt wire short circuit.
(4) capacitive electrical element is embedded in reserved on the first micro groove structure 41 and the second micro groove structure 42 space 6.Embed the resonance performance that capacitive electrical element can change the first sheet metal, finally improve Q value and the resonant operational point of antenna.As common practise, we know, the pass of passband BW and resonance frequency w0 and quality factor q is: BW=wo/Q, and this formula shows, Q is larger, and then passband is narrower, and the less then passband of Q is wider.Separately have: Q=wL/R=1/wRC, wherein, Q is quality factor; Supply frequency when w is circuit resonance; L is inductance; R is the resistance of string; C is electric capacity, and from Q=wL/R=1/wRC formula, Q and C is inverse ratio, therefore, can reduce Q value, passband is broadened by adding capacitive electrical element.
Antenna of the present invention can be the same structure before not adding any element, just by adding different electronic components at diverse location, and the difference of the parameter of electronic component (inductance value, resistance value, capacitance), realize the performance parameter of different antennae, namely achieve versatility, therefore significantly can reduce production cost.
Described space of the present invention can be pad, also can be a vacancy.The structure of pad can see the pad on common circuit board.Certainly, what the design consideration of its size was different needs meeting different.
In addition, in the present invention, medium substrate can be made up of stupalith, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.Preferably, being made up of macromolecular material, can be the macromolecular materials such as FR-4, F4B particularly.
In the present invention, the first sheet metal and the second sheet metal are copper sheet or silver strip.Be preferably copper sheet, cheap, conduct electricity very well.
In the present invention, the first feeder line, the second feeder line, the 3rd feeder line and the 4th feeder line select the material same with the first sheet metal and the second sheet metal to make.Be preferably copper.
Said in the present invention " asymmetrical first micro groove structure 41 and the second micro groove structure 42 " refers to, both the first micro groove structure 41 and the second micro groove structure 42 do not form axially symmetric structure.In other words, namely can not find an axis of symmetry on a surface, the first micro groove structure 41 is symmetrical arranged with the second micro groove structure 42 this axis of symmetry relative.
In like manner, said in the present invention " asymmetrical 3rd micro groove structure 41 and the 4th micro groove structure 42 " refers to, both the 3rd micro groove structure 71 and the 4th micro groove structure 72 do not form axially symmetric structure.In other words, namely can not find an axis of symmetry on b surface, the 3rd micro groove structure 71 is symmetrical arranged with the 4th micro groove structure 72 this axis of symmetry relative.
In the present invention; first micro groove structure 41 and the second micro groove structure 42 structure asymmetric; 3rd micro groove structure 71 and the 4th micro groove structure 72 structure asymmetric; therefore the electric capacity on two positions and inductance can be different; thus the tuning-points that generation at least two is different; and tuning-points is not easily offset, be conducive to realizing the abundant multimode of antenna.
First micro groove structure 41 of the present invention can be the same with the version of the second micro groove structure 42, also can be different.And the degree of asymmetry of the first micro groove structure 41 and the second micro groove structure 42 can regulate as required.In like manner, the 3rd micro groove structure 71 of the present invention can be the same with the version of the 4th micro groove structure 72, also can be different.And the degree of asymmetry of the 3rd micro groove structure 71 and the 4th micro groove structure 72 can regulate as required.Thus realize abundant adjustable multimode resonance.
And the present invention as required, same a slice sheet metal can also arrange more micro groove structure, with the different resonance frequency making described antenna have more than three.
Concrete, the asymmetric situation in the present invention can have following embodiment.
Figure 2 shows that the structural representation of first embodiment of the invention.Fig. 3 is its another visual angle figure.In the present embodiment, as shown in Figure 2, it is opening helical ring structure to be in first micro groove structure 41 on medium substrate a surface and the second micro groove structure 42, and the first micro groove structure 41 and the second micro groove structure 42 do not communicate, but the difference of its size causes the asymmetric of the two structure; Equally, as shown in Figure 3, it is opening helical ring structure to be in the 3rd micro groove structure 71 on medium substrate b surface and the 4th micro groove structure 72, but the difference of its size causes the asymmetric of the two structure; Antenna is made to have at least plural resonance frequency.In addition, in the present embodiment, the first sheet metal 4, first feeder line 2, second feeder line 3, first micro groove structure 41 on medium substrate a surface and the second projection of micro groove structure 42 on b surface overlap with the second sheet metal 7, the 3rd feeder line 8, the 4th feeder line 9, the 3rd micro groove structure 71 and the 4th micro groove structure 72 respectively, and the benefit done like this is Simplified flowsheet.
Figure 4 shows that the structural representation of second embodiment of the invention.Because the structure on medium substrate b surface is identical with the structure on a surface, so figure merely illustrates the structure in a face.In the present embodiment, it is opening helical ring structure to be in first micro groove structure 41 on medium substrate a surface and the second micro groove structure 42, and there is identical size, first micro groove structure 41 and the second micro groove structure 42 do not communicate, but structure is asymmetric both the setting on both the first micro groove structure 41 and the second micro groove structure 42 position causes.
Figure 5 shows that the structural representation of third embodiment of the invention.Because the structure on medium substrate b surface is identical with the structure on a surface, so figure merely illustrates the structure in a face.In the present embodiment, the first micro groove structure 41 being in medium substrate a surface is complementary helix structure, and the second micro groove structure 42 is opening helical ring structure, and the first micro groove structure 41 and the second micro groove structure 42 do not communicate, clearly, the first micro groove structure 41 and the second micro groove structure 42 asymmetric.
In addition, in above-mentioned three embodiments, first micro groove structure and the second micro groove structure can also realize the connection of the first micro groove structure and the second micro groove structure by the groove that hollow out on the first sheet metal one is new, same 3rd micro groove structure and the 4th micro groove structure also can realize the connection of the 3rd micro groove structure and the 4th micro groove structure by the groove that hollow out on the second sheet metal one article is new.After being communicated with, the first micro groove structure and the second micro groove structure are still unsymmetric structure, 3rd micro groove structure and the 4th micro groove structure are also unsymmetric structure, therefore, too much influence is not had to effect of the present invention, antenna can be made equally to have at least plural resonance frequency.
In the present invention, about the processing and manufacturing of antenna, as long as meet design concept of the present invention, various manufacture can be adopted.Prevailing method is the manufacture method using all kinds of printed circuit board (PCB) (PCB), and certainly, metallized through hole, the PCB of double-sided copper-clad manufactures and also can meet processing request of the present invention.Except this processing mode, other manufacturing process can also be introduced according to the actual needs, such as (RFID is the abbreviation of RadioFrequency Identification to RFID, i.e. REID, is commonly called as electronic tag) in use conductive silver paste ink processing mode, all kinds of can the processing mode that combines of the flexible PCB processing of deformable element, the processing mode of iron plate antenna and iron plate and PCB.Wherein, iron plate and PCB Combined machining mode refer to and utilize the accurate processing of PCB to complete the processing of antenna micro groove structure, complete other slave part with iron plate.In addition, the method can also carved by etching, electroplating, bore quarter, photoetching, electronics quarter or ion is processed.
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 (5)
1. a guider, it antenna comprising a pcb board and be connected with pcb board, described antenna is provided with publicly and feeding point, it is characterized in that, described antenna comprises medium substrate, be attached to the first sheet metal and second sheet metal on relative two surfaces of medium substrate, first sheet metal is provided with the first feeder line, second feeder line, second sheet metal is provided with the 3rd feeder line, 4th feeder line, described first feeder line and the second feeder line are all by the first sheet metal described in coupling scheme feed-in, described 3rd feeder line and the 4th feeder line are all by the second sheet metal described in coupling scheme feed-in, on described first sheet metal, hollow out has asymmetrical first micro groove structure and the second micro groove structure to form the first metal routing on the first sheet metal, on described second sheet metal, hollow out has asymmetrical 3rd micro groove structure and the 4th micro groove structure to form the second metal routing on the second sheet metal, described first feeder line is electrically connected with the 3rd feeder line, described second feeder line is electrically connected with the 4th feeder line, described antenna is preset with the space that electronic component embeds, wherein, the scope of described perceptual electronic component inductance value is between 0-5uH,
Described spatial placement the first feeder line, the second feeder line, between the first feeder line and the first sheet metal, between the second feeder line and the first sheet metal and these five positions of the first sheet metal at least one on, and described electronic component is perceptual electronic component, capacitive electrical element or resistance, described space is be formed in the pad on described antenna;
Or, described spatial placement the 3rd feeder line, the 4th feeder line, between the 3rd feeder line and the second sheet metal, between the 4th feeder line and the second sheet metal and these five positions of the second sheet metal at least one on, and described electronic component is perceptual electronic component, capacitive electrical element or resistance, described space is be formed in the pad on described antenna.
2. guider according to claim 1, is characterized in that, on first metal routing of described spatial placement on the first sheet metal, or described spatial placement is on the first micro groove structure and/or the second micro groove structure.
3. guider according to claim 1, is characterized in that, on second metal routing of described spatial placement on the second sheet metal, or described spatial placement is on the 3rd micro groove structure and/or the 4th micro groove structure.
4. guider according to claim 1, is characterized in that, the scope of described capacitive electrical component capacitance value is between 0-2pF.
5. guider according to claim 1, is characterized in that, described antenna is connected by screw connection manner pcb board.
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| CN201110144860.9A CN102798872B (en) | 2011-05-31 | 2011-05-31 | Navigation device |
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