CN1725555A - High frequency wave glass antenna for an automobile - Google Patents
High frequency wave glass antenna for an automobile Download PDFInfo
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- CN1725555A CN1725555A CN 200510087619 CN200510087619A CN1725555A CN 1725555 A CN1725555 A CN 1725555A CN 200510087619 CN200510087619 CN 200510087619 CN 200510087619 A CN200510087619 A CN 200510087619A CN 1725555 A CN1725555 A CN 1725555A
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Abstract
In a high frequency wave glass antenna for an automobile, wherein an antenna conductor and an antenna-conductor-side feeding electrode connected to the antenna conductor are provided to a laminated glass sheet for an automobile, the laminated glass sheet comprising two glass sheets bonded through a bonding layer, and wherein a receiver-side feeding electrode is disposed at a position to confront the antenna-conductor-side feeding electrode and on a car-interior-side surface of the laminated glass; each of the antenna-conductor-side feeding electrode and the receiver-side feeding electrode has an area of from 140 to 2,500 mm<SUP>2</SUP>.
Description
Technical field
The present invention relates to be suitable for receiving earthwave digital broadcasting (473～767MHz) automobile high frequency glass antenna.
Background technology
The compound window glass plate of automobile is that two glass sheets are by the bonding formation of plastic intermediate coat.Have always on the bonding plane of the inside of this compound window glass plate one side antenna conductor is set, on the face of the car inboard of this compound window glass plate and the relative place of feed electrode antenna conductor one side are provided with report (reference example such as the patent documentation 1: Japanese kokai publication sho 61-30102 communique (Fig. 6)) of the automobile of receiver side feed electrode with high frequency glass antenna.
But, in patent documentation 1, the not concrete record of size for the feed electrode of the size of the feed electrode of antenna conductor side and receiver side exists the not clear problem of means that this prior art example is used in digital TV broadcasting or UHF television broadcasting.
Summary of the invention
The objective of the invention is to, the automobile high frequency glass antenna that can eliminate the above-mentioned shortcoming that prior art has is provided.
The invention provides between these 2 pieces of glass plates of the compound window glass plate that the automobile that possesses the 2 piece glass plates bonding by adhesive linkage is used, antenna conductor and the antenna conductor side feed electrode that is connected this antenna conductor are set, simultaneously
On the face of the car inboard of this compound window glass plate and the relative place of feed electrode antenna conductor one side are provided with receiver side feed electrode, it is characterized by:
The area of antenna conductor side feed electrode and the area of receiver side feed electrode are respectively 49～2500mm
2The automobile high frequency glass antenna.
Be provided at again between these 2 pieces of glass plates that possess the compound window glass plate of using by the automobile of 2 pieces of bonding glass plates of adhesive linkage, antenna conductor and the antenna conductor side feed electrode that is connected this antenna conductor be set, simultaneously
On the face of the car inboard of this compound window glass plate and the relative place of feed electrode antenna conductor one side are provided with receiver side feed electrode, it is characterized by:
The shortest automobile high frequency glass antenna that is spaced apart 1.8～50.0mm of described receiver side feed electrode and car body edge of opening.
Be provided at again between these 2 pieces of glass plates that possess the compound window glass plate of using by the automobile of 2 pieces of bonding glass plates of adhesive linkage, the 1st antenna conductor and the 1st antenna conductor side feed electrode that is connected the 1st antenna conductor are set, again between these 2 pieces of glass plates, the 2nd antenna conductor and the 2nd antenna conductor side feed electrode that is connected the 2nd antenna conductor are set, simultaneously
On the face of the car inboard of this compound window glass plate and the relative place of feed electrode the 1st antenna conductor one side, the 1st receiver side feed electrode is set, on the face of the car inboard of this compound window glass plate again and the relative place of feed electrode the 2nd antenna conductor one side, the 2nd receiver side feed electrode is set, it is characterized by:
The automobile high frequency glass antenna that is spaced apart 6～100mm between the 1st antenna conductor side feed electrode and the 2nd antenna conductor side feed electrode.
Be provided at again on the face of the car inboard that possesses the compound window glass plate of using by the automobile of 2 pieces of bonding glass plates of adhesive linkage, the 1st antenna conductor and the 1st antenna conductor side feed electrode that is connected the 1st antenna conductor be set,
Between these 2 pieces of glass plates of this load compound window glass, the 2nd antenna conductor and the 2nd antenna conductor side feed electrode that is connected the 2nd antenna conductor are set, simultaneously
On the face of the car inboard of this compound window glass plate and the relative place of feed electrode the 2nd antenna conductor one side are provided with receiver side feed electrode, it is characterized by:
The automobile high frequency glass antenna that is spaced apart 2.5～100mm between the 1st antenna conductor side feed electrode and the receiver side feed electrode.
In the present invention, owing to adopt aforesaid structure,, can receive digital broadcasting or UHF television broadcasting well with high sensitivity from the efficiency of transmission excellence of antenna conductor side feed electrode to the received signal of receiver side feed electrode transmission.
Description of drawings
Fig. 1 is the stereogram of automobile of the present invention with the 1st execution mode of high frequency glass antenna.
The A-A sectional drawing of the execution mode that Fig. 2 is shown in Figure 1.
Fig. 3 is the A-A sectional drawing of the shown in Figure 1 execution mode different with Fig. 2.
Fig. 4 is the stereogram of expression automobile of the present invention with the 2nd execution mode of high frequency glass antenna.
Fig. 5 is the A-A sectional drawing of execution mode shown in Figure 4.
Fig. 6 is the A-A sectional drawing of the shown in Figure 4 execution mode different with Fig. 5.
Fig. 7 is the stereogram of the 3rd execution mode of the present invention.
Fig. 8 is the B-B sectional drawing of execution mode shown in Figure 7.
Fig. 9 is to use the structure chart of using the simulation test device of high frequency glass antenna in the automobile of example 1.
Figure 10 is to use the structure chart of using the simulation test device of high frequency glass antenna in the automobile of example 2.
Figure 11 is to use the structure chart of using the simulation test device of high frequency glass antenna in the automobile of example 4.
Figure 12 is to use the structure chart of using the simulation test device of high frequency glass antenna in the automobile of example 6.
Figure 13 is to use the structure chart of using the simulation test device of high frequency glass antenna in the automobile of example 7.
Figure 14 is an example 1, and efficiency of transmission is shown in the longitudinal axis, and the area of antenna conductor side feed electrode 2 and the cartographic represenation of area of counter electrode 1 are in the performance plot of transverse axis.
Figure 15 is an example 2, and efficiency of transmission is shown in the longitudinal axis, and L2 is shown in the performance plot of transverse axis.
Figure 16 is an example 3, and efficiency of transmission is shown in the longitudinal axis, and sheet thickness is shown in the performance plot of transverse axis.
Figure 17 is an example 4, and efficiency of transmission is shown in the longitudinal axis, and the area (identical with the area of counter electrode 1) of antenna conductor side feed electrode 2 is shown in the performance plot of transverse axis.
Figure 18 is 0～1000mm of the transverse axis of Figure 17
2The performance plot of the amplification of part.
Figure 19 is an example 5, and efficiency of transmission (dB) is shown in the longitudinal axis, L
2Be shown in the performance plot of transverse axis.
Figure 20 is an example 6, and efficiency of transmission is shown in the longitudinal axis, and La is shown in the performance plot of transverse axis at interval.
Figure 21 is an example 7, and efficiency of transmission is shown in the longitudinal axis, and Lb is shown in the performance plot of transverse axis at interval.
Label declaration
1: receiver side feed electrode (counter electrode)
1a: the 1st receiver side feed electrode (the 1st counter electrode)
1b: the 2nd receiver side feed electrode (the 2nd counter electrode)
2: antenna conductor side feed electrode
2a: the 1st antenna conductor side feed electrode
2b: the 2nd antenna conductor side feed electrode
3: antenna conductor
3a: the 1st antenna conductor
3b: the 2nd antenna conductor
4: car inner glass plate
5: car outside glass plate
6: intermediate coat
Embodiment
Example 1
Most preferred embodiment shown in reference to the accompanying drawings is elaborated with high frequency glass antenna to automobile of the present invention below.Fig. 1 is expression automobile of the present invention is used high frequency glass antenna with the automobile of the 1st execution mode of high frequency glass antenna a stereogram.Fig. 2, the 3rd, automobile shown in Figure 1 is represented different execution modes respectively with the A-A sectional drawing of high frequency glass antenna.
In Fig. 1,2,3, the 1st, receiver side feed electrode (hereinafter referred to as " counter electrode "), the 2nd, antenna conductor side feed electrode, the 3rd, antenna conductor, the 4th, car inner glass plate, the 5th, car outside glass plate, the 6th, the intermediate coat that synthetic resin is made.Also have, 9 among Fig. 2,3 is the metallic terminals that are provided with as required, and its expression is omitted in Fig. 1.Again, in Fig. 1,2,3, the top is the car inboard.
Compound window glass plate among the present invention has the automobile compound window glass plate of for example two glass sheets being made intermediate coat 6 bonding formations by synthetic resin.In the example shown in Fig. 1,2,3, car inner glass plate 4 and car outside glass plate 5 utilize the intermediate coat 6 between car inner glass plate 4 and car outside glass plate 5 bonding.Therefore intermediate coat 6 has stickiness
The place that feed electrode on the face (face by the car inboard of car inner glass plate 4) of the car inboard of compound window glass plate and antenna conductor one side 2 is relative is provided with counter electrode 1.Like this, by making antenna conductor side feed electrode 2 relative with counter electrode 1, at least a coupling that antenna conductor side feed electrode 2 and counter electrode 1 form in electromagnetic coupled and the capacitive coupling, the received signal that excites on the antenna conductor 3 is sent to antenna conductor side feed electrode 2, counter electrode 1 in regular turn, utilizes the cable (not shown) that is connected in counter electrode 1 to be transferred to receiver side.Also have, be provided with under the situation of hidden film on the face of the car inboard of synthesizing the glass pane plate, the counter electrode 1 that is provided with on this hidden film gets final product.The material of hidden film can be for example ceramic.
The area of antenna conductor side feed electrode 2 and the area of counter electrode 1 are respectively 49～2500mm
2If the area of antenna conductor side feed electrode 2 and the area of counter electrode 1 are all at 49mm
2More than, then can improve efficiency of transmission, be more satisfactory.If the area of antenna conductor side feed electrode 2 and the area of counter electrode 1 are all at 2500mm
2Below, then can improve efficiency of transmission, the area of the area of antenna conductor side feed electrode 2 and counter electrode 1 is constant too much simultaneously, can guarantee the visual field and attractive in appearance, is desirable therefore.For above-mentioned reason is improved, the scope of the area of the area of antenna conductor side feed electrode 2 and counter electrode 1 is recorded in table 1.Along with the increase of numbering, its reason is also sufficient more.
Table 1
| The order that reason is improved | The scope of the area of antenna conductor |
| 1 | 49～ |
| 2 | 92～ |
| 3 | 140～ |
| 4 | 230～ |
| 5 | 260～ |
| 6 | 300～ |
| 7 | 360～900mm 2 |
The area of antenna conductor side feed electrode 2 is 0.5～1.5 times of area of counter electrode 1 preferably.In the time of in this scope, compare outward with this scope, efficiency of transmission and densification degree are improved.More satisfactory scope is 0.7～1.3 times, and desirable especially scope is 0.8～1.2 times.Also have, in example shown in Figure 1, the area of antenna conductor side feed electrode 2 is consistent with the area of counter electrode 1 or roughly consistent.
At the interval of antenna conductor side feed electrode 2 with receiver side feed electrode 1, and from the relation of antenna conductor side feed electrode between the transmission efficiency of the received signal that receiver side current electrode 1 transmits, this transmission efficiency according to this interval alternately to get maximum and minimizing mode changes.This phenomenon is considered to that multipath reflection of producing between the two sides of car inner glass plate 4 etc. causes, having between antenna conductor side feed electrode 2 and the receiver side feed electrode 1 under the intermediate coat 6 intervenient situations, owing to also produce multipath reflection etc. between the two sides of intermediate coat 6, so intermediate coat 6 is also influential.Express this phenomenon among following Figure 16.
Preferably this is set at interval to such an extent that make efficiency of transmission keep off this minimum.Under situation shown in Figure 16, antenna conductor side feed electrode 2 is advisable with 1.50～2.72mm with the interval of counter electrode 1, or 2.87mm～6.00mm preferably.Be spaced apart 1.50mm when above at this, the intensity of composite glass is enough big, and this is at interval below 2.72mm or 2.87mm efficiency of transmission height when above.Again, this is spaced apart 6.00mm when following, and it is excessive that the thickness of composite glass can not become, and is suitable therefore.
In order to raise the efficiency, preferably the interval between antenna conductor side feed electrode and the receiver side current electrode is set to such an extent that satisfy the such relation in maximum 〉=efficiency of transmission 〉=(1/3) (2 * maximum+minimum).Here, efficiency of transmission, maximum and minimum adopt the numerical value that is scaled the dB value.Under situation shown in Figure 16, the even more ideal scope in this interval is 1.50～2.49mm, or 4.36～6.00mm.The desirable especially scope in this interval is 1.50～2.31mm.
Under the situation of execution mode shown in Figure 2, this interval mainly is the thickness of the car inner glass plate 4 between antenna conductor side feed electrode 2 and counter electrode 1.But execution mode as shown in Figure 3 is such, even intermediate coat 6 between antenna conductor side feed electrode 2 and counter electrode 1, this interval recited above also can be suitable for.Because the thickness of intermediate coat 6 thickness than car inner glass plate 4 usually is little, and, the ratio dielectric constant (being generally 3.0～4.0) of intermediate coat 6 is littler than the ratio dielectric constant (being generally 6.0～7.0) of car inner glass plate 4 usually, therefore when the above-mentioned interval of decision, the influence that intermediate coat 6 exists is little, and the existence of intermediate coat 6 can be omitted when estimating.Also have, the thickness of intermediate coat 6 is advisable with 0.3～1.2mm, it is desirable to 0.5～0.8mm especially.
That is to say that if the thickness of car inner glass plate 4 is increased, then as shown in figure 16, efficiency of transmission reduces, increases, reduces to take place repeatedly.In other words, efficiency of transmission according to the thickness of car inner glass plate 4 alternately to get maximum and minimizing mode changes.
Again, in the present invention, be advisable with 1.8～50.0mm in the interval between counter electrode 1 and the car body edge of opening.If should be at interval more than 1.8mm, then efficiency of transmission be improved, and is desirable therefore.If should at interval below 50.0mm, be desirable then from guaranteeing the visual field and keeping the viewpoint of aesthetic feeling.The even more ideal scope in this interval is 3.1～30.0mm, and desirable especially scope is 5.0～20.0mm.
The area of antenna conductor side feed electrode 2 and the area of counter electrode 1 are respectively 49～144mm
2, 49～92mm particularly
2The time, it is desirable for the raising of efficiency of transmission that counter electrode 1 and car body edge of opening the shortest is spaced apart 1.8～28mm.In this case, the even more ideal scope at the shortest interval of counter electrode 1 and car body edge of opening is 3.1～25.0mm, and desirable especially scope is 5.0～23.0mm.
In the example shown in Fig. 1,2,3, antenna conductor 3, antenna conductor side feed electrode 2 are respectively 1 with counter electrode 1.But, being not limited to this, antenna conductor, antenna conductor side feed electrode and counter electrode also can be provided with a plurality of.For example, except antenna conductor 3 (the 1st antenna conductor), antenna conductor side feed electrode 2 and counter electrode 1, under the 2nd antenna conductor and the 2nd antenna conductor side feed electrode closely are arranged at situation on the composite glass mutually, also can utilize the potential difference between antenna conductor and the 2nd antenna conductor from antenna conductor 3 and the 2nd antenna conductor feed.Again the counter electrode that the 2nd antenna conductor side feed electrode is used can be set in the regulation place of composite glass.
The shape of the shape of counter electrode 1 and antenna conductor side feed electrode 2 is square and roughly square in Fig. 1.But, be not limited to this, also can be rectangle or the roughly quadrangle beyond the square such as rectangle or roughly quadrangle, circle, circular, ellipse and substantially elliptical etc.
With reference to the accompanying drawings the present invention's the 2nd execution mode is elaborated below.Fig. 4 is the stereogram of expression automobile of the present invention with the 2nd execution mode of high frequency glass antenna.Fig. 5 and Fig. 6 are the A-A sectional drawings of execution mode shown in Figure 4, represent different execution modes respectively.
In Fig. 4,5,6,1a is the 1st receiver side feed electrode (hereinafter referred to as the 1st counter electrode), 1b is the 2nd receiver side feed electrode (hereinafter referred to as the 2nd counter electrode), 2a is the 1st antenna conductor side feed electrode, 2b is the 2nd antenna conductor side feed electrode, 3a is the 1st antenna conductor, and 3b is the 2nd antenna conductor, and 4 is car inner glass plate.Also have, the 9a among Fig. 5,6,9b are the metal terminals that is provided with as required, omit in Fig. 4.Again, in Fig. 4,5,6, the top is the car inboard.
In the 2nd execution mode, the 1st antenna conductor 3a, the 1st antenna conductor side feed electrode 2a, the 2nd antenna conductor 3b and the 2nd antenna conductor side feed electrode 2b are arranged between car inner glass plate 4 and the car outside glass plate 5.
In the example shown in Figure 5, the 1st antenna conductor 3a, the 1st antenna conductor side feed electrode 2a, the 2nd antenna conductor 3b and the 2nd antenna conductor side feed electrode 2b are arranged on the bonding plane of composite glass private side of car inner glass plate 4.
In the example shown in Figure 6, the 1st antenna conductor 3a, the 1st antenna conductor side feed electrode 2a, the 2nd antenna conductor 3b and the 2nd antenna conductor side feed electrode 2b are arranged on the bonding plane of composite glass private side of car outside glass plate 5.That is to say, in the 2nd execution mode, the place that the 1st antenna conductor 3a, the 1st antenna conductor side feed electrode 2a, the 2nd antenna conductor 3b and the 2nd antenna conductor side feed electrode 2b are provided with is so long as between car inner glass plate 4 and car outside glass plate 5, be not particularly limited, for example also antenna conductor 3a, 3b and antenna conductor side feed electrode 2a, 2b can be arranged among the intermediate coat 6, determine that suitably its position makes antenna performance reach optimum state.
According to the above, the 1st antenna conductor 3a and the 1st antenna conductor side feed electrode 2a also can be arranged on the composition surface of composite glass private side of car inner glass plate 4, or be arranged on the composition surface of composite glass private side of car outside glass plate 5, the 2nd antenna conductor 3b and the 2nd antenna conductor side feed electrode 2b also can be arranged on the composition surface of composite glass private side of car inner glass plate 4, or are arranged on the composition surface of composite glass private side of car outside glass plate 5.
In the 2nd execution mode, the place relative with the 1st antenna conductor side feed electrode 2a on the face (face of the car inboard of car inner glass plate 4) of the car inboard of composite glass is provided with the 1st counter electrode 1a, and the place relative with the 2nd antenna conductor side feed electrode 2b on the face of the car inboard of compound window glass plate is provided with the 2nd counter electrode 1b again.
By making the 1st antenna conductor side feed electrode 2a relative like this with the 1st counter electrode 1a, at least a coupling in electromagnetic coupled and the capacitive coupling takes place in the 1st antenna conductor side feed electrode 2a and the 1st counter electrode 1a, the received signal that excites on the 1st antenna conductor 3a is sent to the 1st antenna conductor side feed electrode 2a and the 1st counter electrode 1a in regular turn, is transported to receiver side by the cable (not shown) that is connected on the 1st counter electrode 1a.
By making the 1st antenna conductor side feed electrode 2a relative with the 1st counter electrode 1a, at least a coupling in electromagnetic coupled and the capacitive coupling takes place in the 1st antenna conductor side feed electrode 2a and the 1st counter electrode 1a, the received signal that excites on the 2nd antenna conductor 3b is sent to the 2nd antenna conductor side 2b, the 2nd counter electrode 1b in regular turn, is transported to receiver side by the cable (not shown) that is connected on the 2nd counter electrode 1b.That is to say that in the 2nd execution mode, the potential difference between the 1st counter electrode 1a and the 2nd counter electrode 1b is used as received signal and uses.
Also have, on the face of the car inboard of compound window glass plate, be provided with under the situation of hidden film, also the 1st counter electrode 1a and the 2nd counter electrode 1b can be set on this hidden film.The material of hidden film can be for example ceramic.
In the 2nd execution mode, the interval between the 1st antenna conductor side feed electrode 2a and the 2nd antenna conductor side feed electrode 2b (i.e. the distance at close place between the 1st antenna conductor side feed electrode 2a and the 2nd antenna conductor side feed electrode 2b) is 6～100mm.If this distance is more than 6mm, then efficiency of transmission is improved, and is desirable therefore, if should then be connected in the 1st counter electrode 1a and just carry out than being easier to the installation of the cable of the 2nd counter electrode 1b at interval below 100mm, is desirable therefore.Particularly using under the situation of coaxial cable, if this is spaced apart below the 100mm, then installs and carry out easily, is desirable therefore.The ideal range at this interval is 6～100mm, and more desirable scope is 8～100mm, and desirable especially scope is 12～80mm, and optimal scope is 20～50mm.
Under the situation of this condition of use, the thickness of car inner glass plate 4, or the thickness sum of the thickness of car inner glass plate 4 and intermediate coat 6 is advisable with 1.75～5.25mm.That this scope is better is 2.0～4.9mm.Also have, the interval between the 1st antenna conductor side feed electrode 2a and the 2nd antenna conductor side feed electrode 2b preferably equals the interval between the 1st counter electrode 1a and the 2nd counter electrode 1b.
In the 2nd execution mode, under the situation that is spaced apart 6～100mm between the 1st antenna conductor side feed electrode 2a and the 2nd antenna conductor side feed electrode 2b, the 1st antenna conductor side feed electrode 2a, the 2nd antenna conductor side feed electrode 2b, the 1st counter electrode 1a and the 2nd counter electrode 1b area and 49～900mm separately
2Be advisable, it is desirable to 81～600mm especially
2So long as in this scope, the 2nd antenna conductor side feed electrode 2b, the 1st counter electrode 1a and the 2nd counter electrode 1b area separately also can be different.
Fig. 7 is the stereogram of automobile of the present invention with the 3rd execution mode of high frequency glass antenna.Fig. 8 is the B-B sectional drawing of the 3rd execution mode shown in Figure 7.In the 3rd execution mode, the 1st antenna conductor 3a and the 1st antenna conductor side feed electrode 2a are arranged on the face of car inboard of compound window glass plate.
The place that the 1st antenna conductor 3b, the 2nd antenna conductor side feed electrode 2b and receiver side feed electrode 1b (counter electrode 1b) are provided with is identical with the 1st execution mode.By making the 2nd antenna conductor side feed electrode 2b relative with counter electrode 1b, at least a coupling in electromagnetic coupled and the capacitive coupling takes place in the 2nd antenna conductor side feed electrode 2b and counter electrode 1b, the received signal that excites on the 2nd antenna conductor 3b is sent to the 2nd antenna conductor side feed electrode 2b, counter electrode 1b in regular turn, is sent to receiver side by the cable that is connected in counter electrode 1b.That is to say, utilize the cable that is connected on the 1st antenna conductor side feed electrode 2a and the counter electrode 1b that received signal is transferred to receiver side.In the 3rd execution mode, with the potential difference between the 1st antenna conductor side feed electrode 2a and the counter electrode 1b as the received signal utilization.
In the 3rd execution mode, the interval between the 1st antenna conductor side feed electrode 2a and the counter electrode 1b (i.e. the distance at approaching place between the 1st antenna conductor side feed electrode 2a and the counter electrode 1b) is 2.5～100mm.If should be at interval more than 2.5mm, then efficiency of transmission be improved, and is desirable therefore.If this is spaced apart below the 100mm, the installation that then is connected in the cable of counter electrode 1b becomes easily, is desirable therefore.Particularly cable adopts under the situation of coaxial cable, and this is then installed and become easy at interval if below 100mm, is desirable therefore.
The ideal range at this interval is 4～100mm, and the better scope at this interval is 6～100mm, and desirable especially scope is 6～80mm, and optimal scope is 6～50mm.And, consider that from the viewpoint that improves efficiency of transmission this interval is to be advisable below the 10mm, particularly 8mm is following even more ideal.
In the 3rd example, this adopts under the situation of 2.5～10mm at interval, and the 1st antenna conductor side feed electrode 2a, the 2nd antenna conductor side feed electrode 2b and counter electrode 1b area separately are with 49～900mm
2Be advisable, particularly 81～600mm
2Even more ideal.So long as in this scope, the 1st antenna conductor side feed electrode 2a, the 2nd antenna conductor side feed electrode 2b and counter electrode 1b area separately also can be different.Under the situation of this condition of use, the thickness of car inner glass plate 4, or the thickness sum of the thickness of car inner glass plate 4 and intermediate coat 6 is advisable with 1.75～5.25mm.More desirable scope is 2.0～4.9mm.
Also have, be provided with under the situation of hidden film on the face of the car inboard of compound window glass plate, also at least one that select among the 1st antenna conductor 3a, the 1st antenna conductor side feed electrode 2a and the counter electrode 1b can be set on this hidden film.
In the present invention, the 1st antenna conductor side feed electrode 2a, the 1st counter electrode 1a, the 2nd antenna conductor side feed electrode 2b or the 2nd counter electrode 1b area separately 140～2500mm preferably
2If the area of these electrodes is all at 140mm
2More than, then therefore the efficiency of transmission height is desirable.If these areas are all at 2500mm
2Below, then can improve efficiency of transmission, simultaneously these areas can be not excessive, for guarantee the visual field and attractive in appearance be desirable.The scope of these areas is with 230～2500mm
2Be advisable, more satisfactory scope is 260～1840mm
2, desirable especially scope is 300～1600mm
2, optimal scope is 360～900mm
2
In the present invention, the ratio dielectric constant of the ratio dielectric constant of car inner glass plate 4 and car outside glass plate 5 is respectively 6.0～7.5 and is advisable, and 6.5～7.0 desirable more.
The shape of at least one that select among the 1st antenna conductor side feed electrode 2a, the 1st counter electrode 1a, the 2nd antenna conductor side feed electrode 2b and the 2nd counter electrode 1b also can be quadrangle, roughly quadrangle, circle, circular, ellipse or substantially elliptical, is not particularly limited.
In the present invention, antenna conductor 3,3a, 3b, antenna conductor feed electrode 2,2a, 2b, counter electrode 1,1a, 1b material separately can be for example Copper Foil, copper coin, copper cash.In addition, also can be that elargol is printed material that sintering forms etc. on the composite glass private side bonding plane of on the composite glass private side bonding plane of car inner glass plate 4 or car outside glass plate 5.Under antenna conductor and antenna conductor side feed electrode are not arranged at situation on the composite glass with being connected, be connected means, the connection that can adopt soldering, welding, crimping, scolding tin or utilize conductive adhesive to carry out as antenna conductor and antenna conductor side feed electrode.The material of intermediate coat 6 can use for example butyral resin.
The present invention also can be used in surface wave digital TV broadcasting a part of frequency band (470～704MHz), the television broadcasting of UHF (470～750MHz) or digital TV broadcasting (698～806MHz) the reception of the U.S..
[embodiment]
Below the present invention will be described but the invention is not restricted to these embodiment with embodiment, and under the situation of main idea of the present invention, the present invention also includes various improvement and change.
In following embodiment, fetch data with 450MHz, 500MHz, 550MHz, 600MHz, 650MHz, 700MHz, 750MHz and 800MHz, the simple of the efficiency of transmission under these frequencies (dB value) on average is used in the performance plot shown below.Below with reference to the accompanying drawings embodiment is elaborated.
Example 1 (embodiment)
The making automobile as shown in Figure 9 simulation test device of high frequency glass antenna.Antenna conductor side feed electrode 2 and counter electrode 1 are made by utilize sticker adhesion Copper Foil on glass plate (not shown).
In Fig. 9,11a is the inner conductor of the 1st coaxial cable, and 11b is the outer conductors of the 1st coaxial cable, and 12a is the inner conductor of the 2nd coaxial cable, and 12b is the outer conductors of the 2nd coaxial cable, the 13rd, and the lead of connection outer conductors 11b and outer conductors 12b, L
1One that is antenna conductor side feed electrode 2 becomes, and is a length of side of counter electrode 1.Also have, the glass plate that antenna conductor side feed electrode 2 and counter electrode 1 are set omits in diagram.Shown in the specifications of Copper Foil that uses and glass plate, coaxial cable etc. are following.
Copper thickness 0.06mm
The resistivity 2.0 * 10 of Copper Foil
-6Ω cm
Glass plate (vertical * horizontal * thick) 600 * 600 * 3.5mm
The shortest interval 10mm of the periphery of glass plate and Copper Foil
Impedance 500 Ω of coaxial cable
The shape of antenna conductor side feed electrode 2 and the shape of counter electrode 1 adopt square, and make identical size, Figure 14 is that efficiency of transmission (dB) is shown in the longitudinal axis, and the area of antenna conductor side feed electrode 2 and the cartographic represenation of area of counter electrode 1 are in the performance plot of transverse axis.The change of the area of antenna conductor side feed electrode 2 and the area of counter electrode 1 is by making L
1Be that 10～50mm changes.Figure 14 comprises comparative example.
Example 2 (embodiment)
Make automobile shown in Figure 10 simulation test device with high frequency glass antenna.Experimental rig shown in Figure 10 has the iron frame 14 as the simulated automotive vehicle body, and the glass plate of experimental rig shown in Figure 9 is installed on frame 14.The shape of the outermost of frame 14 is squares, is the L font perpendicular to the section on the direction on this foursquare one side.The record as described below of the specification of frame 14.
Square as the shape of the outermost of frame 14 ... 610 * 610mm
The L word of frame 14 ... 25 * 25mm
The thickness of the iron plate of frame 14 ... 2.8mm
L1 ……20mm
Beeline L between the upper side end of the upper side end of Figure 10 center 14 and counter electrode 1
12
……20mm。
Make the beeline L of counter electrode 1 and frame 14
2Change between 0.1～30.0mm, Figure 15 is that efficiency of transmission (dB) is shown in the longitudinal axis, L
2Be shown in the performance plot of transverse axis.
Example 3 (embodiment)
The thickness of glass plate is changed in 2.0～6.0mm scope, make except L
1Be fixed in beyond the 20mm experimental rig of the specification identical with example 1.Figure 16 is that efficiency of transmission (dB) is shown in the longitudinal axis, and sheet thickness is shown in the performance plot of transverse axis.
Example 4 (embodiment)
Make automobile shown in Figure 11 simulation test device with high frequency glass antenna.Except the specification of the following stated, identical with example 1.Among Figure 11, the 41st, glass plate, the 15th, the iron hardware of " こ " font, 15a is the hole that is arranged on the hardware 15.In this experimental rig, utilize hardware 15 to connect the outer conductors 11b of the 1st coaxial cable and the outer conductors 12b of the 2nd coaxial cable.Glass plate 41 is of a size of 600 * 600 * 2.0mm, and the material of glass plate 41 is soda lime (soda-lime).Antenna conductor side feed electrode 2 and counter electrode 1 are arranged at the center of glass plate 41.
The shape of antenna conductor side feed electrode 2 and the shape of counter electrode 1 adopt square, and adopt identical size, make a limit of antenna conductor side feed electrode 2 length (length on a limit of counter electrode 1, not shown among Figure 11, be equivalent to L shown in Figure 9
1) in 5～80mm scope, change, test.Figure 17 is that efficiency of transmission (dB) is shown in the longitudinal axis, and the area of antenna conductor side feed electrode 2 and the cartographic represenation of area of counter electrode 1 are in the performance plot of transverse axis.And Figure 18 is 0～1000mm of the transverse axis of Figure 17
2The amplification of part.
Example 5 (embodiment)
Except changing lead 13 into hardware 15, outside the change as follows of each numerical value, use the method the same to measure with example 2.Make the beeline L of lead electrode 1 and frame 14
2Change in the scope of 0.1～75mm, Figure 19 is that efficiency of transmission (dB) is shown in the longitudinal axis, L
2Be shown in the performance plot of transverse axis.
Glass plate (vertical * horizontal * thick) 600 * 600 * 2.0mm
L
1 8mm
The shortest interval L of the upper side end of the upper side end of Fig. 6 center 14 and counter electrode 1
1240mm
Example 6 (embodiment)
Make automobile shown in Figure 12 simulation test device with high frequency glass antenna.The 1st antenna conductor side feed electrode 2a, the 2nd antenna conductor side feed electrode 2b, the 1st counter electrode 1a and the 2nd counter electrode 1b utilize Copper Foil are made of the method that bonding agent is pasted on the glass plate 15.
In Figure 12,11a is the inner conductor of the 1st coaxial cable, 11b is that outer conductors, the 12a of the 1st coaxial cable is the inner conductor of the 2nd coaxial cable, 12b is the outer conductors of the 2nd coaxial cable, the 13rd, the lead of connection outer conductors 11 and the 1st antenna conductor side feed electrode 2a, the 14th, the lead of connection outer conductors 12b and the 1st counter electrode 1a, La is the interval (interval between the 1st antenna conductor side feed electrode 2a and the 2nd antenna conductor side feed electrode 2b) between the 1st counter electrode 1a and the 2nd counter electrode 1b.Shown in the specifications of employed Copper Foil and glass plate 15, coaxial cable etc. are following.
Copper thickness 0.06mm
The resistivity 2.0 * 10 of Copper Foil
-6Ω cm
Sheet thickness 3.5mm
Being connected of being connected of being connected of being connected of being connected of inner conductor 11a and the 2nd antenna conductor side feed electrode 2b, inner conductor 12a and the 2nd counter electrode 1b, outer conductors 11b and lead 13, outer conductors 11b and lead 13, outer conductors 12b and lead 14, the 1st antenna conductor side feed electrode 2a and lead 13 be connected and the 1st counter electrode 1a carries out with utilizing scolding tin being connected of lead 14.
Between inner conductor 11a and outer conductors 11b, apply the voltage value signal voltage of regulation, measure the signal voltage between inner conductor 12a and the outer conductors 12b, make at interval in 5～50mm scope, to change.Figure 20 is that efficiency of transmission (dB) is shown in the longitudinal axis, and La is shown in the performance plot of transverse axis at interval.
Example 7 (embodiment)
Change Example 1 employed experimental rig, the 1st antenna conductor side feed electrode 2a, the 2nd antenna conductor side feed electrode 2b and the 2nd counter electrode 1b are set on glass plate 15, make simulation test device as shown in figure 13, carry out test as described below with regard to the 2nd execution mode shown in Figure 4.Outer conductors 11b utilizes lead 23 to be connected with outer conductors 12b.The connection means of example 7 adopt scolding tin, and identical with example 1, Ji Zai specification is not identical with example 1.
Make that interval Lb between the 1st antenna conductor side feed electrode 2a and the 2nd counter electrode 1b becomes 1,2,3,4,5,10,20,30,40,50mm, between inner conductor 11a and outer conductors 11b, apply the signal voltage of assigned voltage value, measure the signal voltage between inner conductor 12a and the outer conductors 12b.Figure 21 is that efficiency of transmission (dB) is shown in the longitudinal axis, and Lb is shown in the performance plot of transverse axis at interval.
[industrial practicality]
The present invention is used in the automotive glass antenna that receives ground digital formula television broadcasting or UHF television broadcasting.
Claims (26)
1. an automobile high frequency glass antenna between these 2 pieces of glass plates of the compound window glass plate that the automobile that possesses the 2 piece glass plates bonding by adhesive linkage is used, is provided with antenna conductor and the antenna conductor side feed electrode that is connected this antenna conductor, simultaneously
On the face of the car inboard of this compound window glass plate and the relative place of feed electrode antenna conductor one side are provided with receiver side feed electrode, it is characterized in that,
The area of antenna conductor side feed electrode and the area of receiver side feed electrode are respectively 49～2500mm
2
2. automobile high frequency glass antenna according to claim 1 is characterized in that,
The area of described antenna conductor side feed electrode and the area of described receiver side feed electrode are respectively 140～2500mm
2
3. automobile high frequency glass antenna according to claim 1 and 2 is characterized in that,
The area of described antenna conductor side feed electrode is 0.5～1.5 times of area of described receiver side feed electrode.
4. an automobile high frequency glass antenna between these 2 pieces of glass plates of the compound window glass plate that the automobile that possesses the 2 piece glass plates bonding by adhesive linkage is used, is provided with antenna conductor and the antenna conductor side feed electrode that is connected this antenna conductor, simultaneously
On the face of the car inboard of this compound window glass plate and the relative place of feed electrode antenna conductor one side are provided with receiver side feed electrode, it is characterized in that,
The shortest 1.8～the 50.0mm that is spaced apart of described receiver side feed electrode and car body edge of opening.
5. automobile high frequency glass antenna according to claim 4 is characterized in that,
The area of described antenna conductor side feed electrode and the area of described receiver side feed electrode are respectively 49～96mm
2The time,
The shortest 1.8～the 28mm that is spaced apart of described receiver side feed electrode and described car body edge of opening.
6. automobile high frequency glass antenna according to claim 1 and 2 is characterized in that,
Described antenna conductor side feed electrode and described receiver side feed electrode be spaced apart 1.50～6.00mm,
Interval at antenna conductor side feed electrode and receiver side feed electrode, and in the relation of antenna conductor side feed electrode between the transmission efficiency of the received signal that the receiver side current electrode transmits, when this transmission efficiency changes alternately to get maximum and minimizing mode according to this interval, set this interval, so that this transmission efficiency is not near this minimizing numerical value.
7. automobile high frequency glass antenna according to claim 6 is characterized in that,
Set the interval of described antenna conductor side feed electrode and described receiver side feed electrode, so that following formula is met, promptly
Described maximum 〉=described transmission efficiency 〉=(1/3) (2 * described maximum+described minimum).
8. automobile high frequency glass antenna according to claim 6 is characterized in that,
Described antenna conductor side feed electrode and described receiver side feed electrode be spaced apart 1.50～2.72mm or 2.87～6.00mm.
9. according to each the described automobile high frequency glass antenna in the claim 1,2,4 or 5, it is characterized in that,
Described compound window glass plate has car inner glass plate and car outside glass plate,
Car inner glass plate is between described antenna conductor side feed electrode and described receiver side feed electrode.
10. according to each the described automobile high frequency glass antenna in the claim 1,2,4 or 5, it is characterized in that,
Described compound window glass plate has car inner glass plate and car outside glass plate,
The intermediate coat that car inner glass plate and synthetic resin are made is between described antenna conductor side feed electrode and described receiver side feed electrode.
11. each the described automobile high frequency glass antenna according in the claim 1,2,4 or 5 is characterized in that,
Described compound window glass plate has the intermediate coat that car inner glass plate, car outside glass plate and the synthetic resin between car inner glass plate and car outside glass plate are made,
Described antenna conductor side feed electrode be arranged at car inner glass plate by on the face of intermediate coat one side, or car outside glass plate by on the face of intermediate coat one side.
12. each the described automobile high frequency glass antenna according in the claim 1,2,4 or 5 is characterized in that,
Leaning on the face of car inboard of described compound window glass plate is provided with hidden film, and described receiver side feed electrode is set on this hidden film.
13. each the described automobile high frequency glass antenna according in the claim 1,2,4 or 5 is characterized in that,
The shape of at least one electrode in described antenna conductor side feed electrode and the described receiver side feed electrode is square, roughly square, circle, circular, ellipse and substantially elliptical.
14. each the described automobile high frequency glass antenna according in the claim 1,2,4 or 5 is characterized in that,
The frequency of the carrier wave that receives comprises the frequency between 470～704MHz.
15. automobile high frequency glass antenna, between these 2 pieces of glass plates of the compound window glass plate that the automobile that possesses the 2 piece glass plates bonding by adhesive linkage is used, the 1st antenna conductor and the 1st antenna conductor side feed electrode that is connected the 1st antenna conductor are set, again between these 2 pieces of glass plates, the 2nd antenna conductor and the 2nd antenna conductor side feed electrode that is connected the 2nd antenna conductor are set, simultaneously
On the face of the car inboard of this compound window glass plate and the relative place of feed electrode the 1st antenna conductor one side, the 1st receiver side feed electrode is set, on the face of the car inboard of this compound window glass plate again and the relative place of feed electrode the 2nd antenna conductor one side, the 2nd receiver side feed electrode is set, it is characterized in that
Be spaced apart 6～100mm between the 1st antenna conductor side feed electrode and the 2nd antenna conductor side feed electrode.
16. automobile high frequency glass antenna according to claim 15 is characterized in that,
The 1st antenna conductor side feed electrode, the 2nd antenna conductor side feed electrode, the 1st receiver side feed electrode and the 2nd receiver side feed electrode, its area is respectively 140～2500mm.
17. according to claim 15 or 16 described automobile high frequency glass antennas, it is characterized in that,
Leaning on the face of car inboard of described compound window glass plate is provided with hidden film, and the one at least in described the 1st receiver side feed electrode and described the 2nd receiver side feed electrode is set on this hidden film.
18. automobile high frequency glass antenna according to claim 15 is characterized in that,
The shape of at least a electrode of selecting in described the 1st antenna conductor side feed electrode, described the 2nd antenna conductor side feed electrode, described the 1st receiver side feed electrode and described the 2nd receiver side feed electrode is square, roughly select in square, circle, circular, ellipse and the substantially elliptical a kind of.
19. an automobile high frequency glass antenna on the face of the car inboard of the compound window glass plate that the automobile that possesses the 2 piece glass plates bonding by adhesive linkage is used, is provided with the 1st antenna conductor and the 1st antenna conductor side feed electrode that is connected the 1st antenna conductor,
Between these 2 pieces of glass plates of this load compound window glass, the 2nd antenna conductor and the 2nd antenna conductor side feed electrode that is connected the 2nd antenna conductor are set, simultaneously
On the face of the car inboard of this compound window glass plate and the relative place of feed electrode the 2nd antenna conductor one side are provided with receiver side feed electrode, it is characterized in that,
Be spaced apart 2.5～100mm between the 1st antenna conductor side feed electrode and the receiver side feed electrode.
20. automobile high frequency glass antenna according to claim 19 is characterized in that,
Described the 1st antenna conductor side feed electrode and described receiver side feed electrode be spaced apart 4～100mm.
21. according to claim 19 or 20 described automobile high frequency glass antennas, it is characterized in that,
Described the 1st antenna conductor side feed electrode, described the 2nd antenna conductor side feed electrode and described receiver side feed electrode, its area is respectively 140～2500mm.
22. each the described automobile high frequency glass antenna according in the claim 1,2,4,5,15,16,19 or 20 is characterized in that,
Leaning on the face of car inboard of described compound window glass plate is provided with hidden film, and the one of selecting in described the 1st antenna conductor, described the 1st antenna conductor side feed electrode and the described receiver side feed electrode at least is set on this hidden film.
23. each the described automobile high frequency glass antenna according in the claim 1,2,4,5,15,16,19 or 20 is characterized in that,
The shape of at least a electrode of selecting in described the 1st antenna conductor side feed electrode, described the 2nd antenna conductor side feed electrode and the described receiver side feed electrode is square, roughly select in square, circle, circular, ellipse and the substantially elliptical a kind of.
24. each the described automobile high frequency glass antenna according in the claim 1,2,4,5,15,16,19 or 20 is characterized in that,
The frequency of the carrier wave that receives comprises the frequency between 473～767MHz.
25. each the described automobile high frequency glass antenna according in the claim 1,2,4,5,15,16,19 or 20 is characterized in that,
The frequency of the carrier wave that receives comprises the frequency between 450～750MHz.
26. each the described automobile high frequency glass antenna according in the claim 1,2,4,5,15,16,19 or 20 is characterized in that,
The frequency of the carrier wave that receives comprises the frequency between 698～806MHz.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004213103 | 2004-07-21 | ||
| JP2004213103 | 2004-07-21 | ||
| JP2004268528 | 2004-09-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1725555A true CN1725555A (en) | 2006-01-25 |
Family
ID=35924848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510087619 Pending CN1725555A (en) | 2004-07-21 | 2005-07-18 | High frequency wave glass antenna for an automobile |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2010263646A (en) |
| CN (1) | CN1725555A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101682108B (en) * | 2007-06-22 | 2013-01-23 | 旭硝子株式会社 | High frequency glass antenna for automobiles |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014045230A (en) | 2010-12-28 | 2014-03-13 | Asahi Glass Co Ltd | Antenna device |
| JP6889846B2 (en) * | 2016-03-23 | 2021-06-18 | Ａｇｃ株式会社 | Vehicle window board |
-
2005
- 2005-07-18 CN CN 200510087619 patent/CN1725555A/en active Pending
-
2010
- 2010-07-12 JP JP2010157903A patent/JP2010263646A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101682108B (en) * | 2007-06-22 | 2013-01-23 | 旭硝子株式会社 | High frequency glass antenna for automobiles |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010263646A (en) | 2010-11-18 |
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Application publication date: 20060125 |