CN100456558C - Combined antenna formed by horizontal directivity antenna and zenithal directivity antenna - Google Patents
Combined antenna formed by horizontal directivity antenna and zenithal directivity antenna Download PDFInfo
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- CN100456558C CN100456558C CNB2005100543507A CN200510054350A CN100456558C CN 100456558 C CN100456558 C CN 100456558C CN B2005100543507 A CNB2005100543507 A CN B2005100543507A CN 200510054350 A CN200510054350 A CN 200510054350A CN 100456558 C CN100456558 C CN 100456558C
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Abstract
A combined antenna is composed of a first antenna having directivity in a roof direction, a ground plate grounded as the first antenna and a second antenna having directivity in a horizontal direction. The second antenna as an improved dipole antenna has an upper and a lower arm parts which extend in parallel to the ground plate. At least a part of the ground plate is included in the arm parts of the second antenna.
Description
Technical field
The present invention relates to a kind of combined antenna, it is by first antenna that has directive property at predetermined direction, form as the ground plate of first antenna ground and second antenna that has directive property in the horizontal direction.
Background technology
In prior art, exist a plurality of antennas to share the example of the modular antenna of a public ground plate, for example example of in the Japanese document 2003-168917 that has announced, describing.Yet, the combined antenna of this prior art type, each sub antenna has directive property at meridian direction, promptly has about 90 ° of elevations angle, so each antenna can utilize an independent ground plate as public ground connection.In recent years, along with the development of wireless communication technique, required combined antenna the antenna (promptly having 0 ° of elevation angle) that has the antenna of directive property at meridian direction and have directive property in the horizontal direction can be combined.
In this class combined antenna, if a contrary Fourier antenna is used as the antenna that horizontal direction has directive property, combined antenna just can obtain satisfactory thin profile so.Yet contrary Fourier antenna is a kind of antenna that must use ground plate, according to the operation frequency band suitable size will be arranged.If same ground plate uses jointly by contrary Fourier antenna with at the antenna that meridian direction has directive property, just can not obtain gratifying operation.This be since (these antenna operation wavelength separately always have the similar order of magnitude) be applicable to have the lateral dimension of ground plate of the antenna of directive property at meridian direction will be littler than the wavelength of the handled radio wave of contrary Fourier antenna, that is, ground plate does not have enough sizes to be used for the satisfactory operation of contrary Fourier antenna.As a result, the peak value of contrary Fourier antenna direction figure will be influenced by ground plate, so that the deviation in driction horizontal direction
A contrary Fourier antenna like this, just can not be provided and have directive property and use the satisfactory combination of the antenna of ground plate at meridian direction.
Summary of the invention
The objective of the invention is by providing a kind of combined antenna to overcome the problems referred to above of prior art, combined antenna has a plurality of antennas that the horizontal direction of being included in has the antenna of directive property, can both obtain satisfactory performance with this each antenna, and combined antenna obtains compact size and thin profile.
Achieve the above object, according to first aspect, the invention provides a kind of combined antenna, it is by first antenna that has directive property at predetermined direction, form as the ground plate of first antenna ground and second antenna that has directive property in the horizontal direction, and second antenna has the structure of modified model folded dipole.Specifically be, second antenna is made up of the discrete component with opposing ends part, each end portion all is designed to foldable structure, each foldable structure has a pair of directed horizontal expansion part that is parallel to each other, the a pair of horizontal expansion separately of foldable structure partly is arranged to be parallel to each other and the fixed interval distance, and at least a portion horizontal expansion partly is oriented to be parallel with ground plate.The characteristics of this combined antenna are to have set up the position relation between first antenna and second antenna, make that at least a portion of ground plate is between foregoing foldable structure,, are positioned at the first antenna inside that is.
Like this, because dipole antenna is a class antenna that does not need to use ground plate, and the influence that not existed by ground plate, modified model folded dipole i.e. second antenna can obtain satisfactory directive property in the horizontal direction, because a part of ground plate has been inserted into the inside of modified model folded dipole, make the horizontal size of combined antenna reduce simultaneously.In addition, because the modified model foldable structure of dipole antenna, combined antenna can obtain thin profile, that is, the vertical dimension of combined antenna also can be reduced.
In addition, the modified model folded dipole has the advantage of low impedance value, and the characteristic impedance of this and coaxial cable is complementary.So just do not need to provide an impedance matching circuit to be used to connect coaxial cable and second antenna (that is), so that make antenna obtain optkmal characteristics in order effectively to transmit received signal power or effective supply through-put power from antenna to antenna.
According to second aspect, make coaxial cable be connected to second antenna, the outer contact that the inner conductor of coaxial cable is connected to second antenna and coaxial cable is connected to ground plate.That is to say, the outer contact of coaxial cable can be fixedly attached on the ground plate, thereby it is definite to guarantee that second antenna is fixed with respect to the position of ground plate and orientation, does not need to use additional structural detail.
According to the third aspect, the invention provides a kind of combined antenna, it is by first antenna that has directive property at predetermined direction, as the ground plate of first antenna ground with have directive property in the horizontal direction and adopt second antenna of folded dipole structure to form.Specifically be, second antenna is made up of a pair of element, and element has positioned opposite, fixed interval distance and is oriented to be parallel with the appropriate section of ground plate.The feature of combined antenna is, at least a portion of ground plate is set between a pair of relative part of element of foregoing second antenna,, is inserted into the second antenna inside that is.
Such combined antenna, the same manner according to the described antenna of front first aspect, can obtain the satisfactory sensing figure of horizontal direction to second antenna, simultaneously because a part of ground plate is inserted into the inside configuration of second antenna, the horizontal size energy minimization of combined antenna, and because second antenna uses the modified model dipole structure, combined antenna can obtain thin profile.Thereby whole combined antenna can both have little size in vertical and level, thereby the volume compact.
Another aspect of the present invention is, first antenna that has directive property at zenith direction is installed in the cardinal principle center on the ground plate.This just makes not only also can obtain a satisfactory sensing figure for second antenna but also for first antenna.
Reason is as follows.If first antenna is positioned near the periphery of ground plate, the electric field of (when transmission) antenna generation can not incide on the ground plate equably so, and the electric field of such first antenna will be by inhomogeneous emission.In some cases, electric field may be rotated to the back side of ground plate, and the peak value of this antenna direction figure (that is the direction of maximum antenna gain) will depart from zenith direction so.Similarly, in service in reception, can not realize the optimal antenna gain.Yet, if first antenna be positioned at ground plate the center or near, the electric field of antenna emission will be incided on the ground plate uniformly so, thereby, the peak value of sensing figure will be similar to along the zenith direction orientation, and therefore, first antenna just can obtain satisfactory performance.
Combined antenna of the present invention is applicable to as GPS (global positioning system) antenna or as VICS (information of vehicles and communication system) antenna, and second antenna is applicable to as mobile phone antenna.So such antenna is applicable to as the car antenna that is equipped with the vehicle of GPS receiver or VICS receiver and portable telephone device.
Description of drawings
Fig. 1 is the oblique view of the total structure of first embodiment of combined antenna, and it comprises a modified model folded dipole;
Fig. 2 is the schematic diagram that shows the sensing figure example of modified model folded dipole;
Fig. 3 is the oblique view of total structure of second embodiment that comprises the combined antenna of a modified model folded dipole;
Fig. 4 is the schematic diagram that shows the sensing figure example of modified model folded dipole when the center conductor that has only coaxial cable is connected on the antenna; And
Fig. 5 is the oblique view of the total structure of the 3rd embodiment of combined antenna, and it comprises a modified model folded dipole.
Embodiment
First embodiment is described below, and it is the combined antenna that is applicable to as car antenna.With reference to Fig. 1 and 2, Fig. 1 is the oblique view that shows the total structure of combined antenna, with label 1 expression.As shown in the figure, it is by at zenith direction (promptly, 90 ° of elevation directions, corresponding to Z direction shown in Figure 1) have a patch antenna 2 of directive property, (promptly in the horizontal direction, 0 ° of elevation direction is corresponding to X-Y direction plane shown in Figure 1) have the modified model folded dipole 3 of directive property and ground plate 4 is formed.
Modified model folded dipole 3 is hereinafter with more detailed description.This is a kind of transmission line type antenna, constitute by discrete component, this element forms at the one end has the part of foldable structure 11, this structure have two that be parallel to each other basically, be positioned at the top of ground plate 4 upper surfaces and be parallel to the horizontal expansion part 9 and 10 of upper surface, as shown in Figure 1.The part of the other end of the element of formation modified model folded dipole 3 is formed with foldable structure 14, this structure has and foldable structure 11 corresponding structure, that is, have two that be parallel to each other, be positioned at the below of ground plate 4 lower surfaces and be parallel to the horizontal expansion part 12 and 13 of lower surface. Horizontal expansion part 9,10,12 with 13 identical at interval with ground plate 4 respectively fixed ranges, promptly, the a pair of horizontal expansion part 9 of the structure that folds over 11,10 and 12,13 of a pair of horizontal expansion parts of folded beneath structure 14 have fixed intervals, the part of ground plate 4 is positioned at the middle of upper and lower two pairs of horizontal expansions part.
The discrete component of formation modified model folded dipole 3 is formed with four bights 15,16,17 and 18 as shown in the figure, and ground plate 4 all is arranged to be parallel in each bight.Therefore, modified model folded dipole 3 be positioned at bight 16, vertical extent between 18 partly connects horizontal expansion part 10 and 13, simultaneously the vertical orientated part of modified model folded dipole 3 from the bight 15 and 17 respectively downwards and stretch upwards, promptly, lay respectively at the end of horizontal expansion part 9 and 12, and at its top 9a, 12a space fixed range.
Under the situation of the mobile phone antenna that is used to receive 800MHz wave band radio wave, the distance (this distance is denoted as L1 Fig. 1) from the outermost edge 9a of horizontal expansion part 9 to foldable structure 11 centers, corresponding outermost edge 12a from horizontal expansion part 12 to the distance at foldable structure 11 centers and from the center of foldable structure 11 to the distance (being denoted as L2 Fig. 1) at the center of antenna element own each all equal the 800MHz radio wave wavelength 1/4.Like this, the total length of modified model folded dipole 3 (constituting more specifically, the total length of the discrete component of modified model folded dipole 3) equals the wavelength of 800MHz radio wave.
The center conductor 19a of coaxial cable 19 is connected to an end of antenna element, promptly, be connected to the top 9a of horizontal expansion part 9 as shown in Figure 1, simultaneously, the outer contact 19b of coaxial cable 19 is connected to the other end of antenna element, that is the top 12a of the horizontal expansion part 12 shown in being connected to.
Position relation between modified model folded dipole 3 and the ground plate 4 will be described below.Ground plate 4 is installed to be some and inserts a pair of horizontal expansion part 12 in below, 13 and a pair of horizontal expansion part 9 in top, between 10, like this, ground plate 4 and a pair of horizontal expansion part 9 in top, distance (D2 among Fig. 1) between distance between 10 (D1 among Fig. 1) and ground plate 4 and a pair of horizontal expansion part 12,13 in below is equal substantially.Insert between a pair of horizontal expansion part 9,10 in top and a pair of horizontal expansion part 12,13 in below for the ease of ground plate 4, on ground plate 4, form a notch portion 4a.
The reason that a part of ground plate 4 is installed in the inside of modified model folded dipole 3 is as follows.Under the situation that ground plate inserts under the situation of modified model dipole antenna inside and ground plate does not insert as shown in Figure 1, assignee of the present invention has measured the sensing figure of the antenna of modified model folded dipole 3 same structures as described.Fig. 2 has shown these measurement results.As shown in the figure, when ground plate inserted modified model folded dipole inside, when not inserting with respect to ground plate, marked change did not take place in the directive property of modified model folded dipole.Like this, no matter whether ground plate 4 inserts, the modified model folded dipole can both obtain satisfactory performance.
In above-mentioned first embodiment, combined antenna 1 is made up of the modified model folded dipole 3 that has directive property in the horizontal direction, and the part of ground plate 4 is inserted modified model folded dipole 3 inside.Since dipole antenna does not need to use ground plate, the directive property of 4 pairs of modified model folded dipoles 3 of ground plate is not influence just, and the modified model folded dipole can keep satisfactory directive property characteristic, and the vertical dimension of modified model folded dipole 3 can diminish simultaneously.In addition, because the inner space of modified model folded dipole 3 is used effectively, it is thin that the general shape of combined antenna 1 can be done, and in addition, it is littler that total lateral dimension of combined antenna 1 can be done, and so just can obtain the close-coupled antenna.
And because antenna 3 has modified model folded dipole structure, antenna 3 impedances are low, like this, and the impedance matching of antenna impedance certainty and coaxial cable.Like this, just do not need to comprise that any optional feature goes to finish the impedance matching between modified model folded dipole 3 and the coaxial cable, to obtain electric power transmission efficiently.
In addition, for the foregoing description, have the center that the patch antenna 2 of directive property vertically upward is positioned at ground plate 4, patch antenna 2 also can obtain satisfactory directive property like this.
Second embodiment
With reference to Fig. 3 and 4 second embodiment is described.Parts corresponding to second embodiment of first embodiment mark with identical label respectively, and further describing omission this.Second embodiment is connected to the mode of modified model folded dipole 3 with the different coaxial cables that only are of embodiment.Specifically be, for second embodiment, the center conductor 32a of coaxial cable 32 is connected to the most advanced and sophisticated 9a of the described horizontal expansion part 9 shown in Fig. 3, and simultaneously, the outer contact 32b of coaxial cable 32 is connected to ground plate 4.
Outer contact at coaxial cable is connected to the modified model folded dipole (promptly, the outer contact inner conductor connects as shown in Figure 3) situation under and the outer contact of coaxial cable be not connected under the situation of modified model folded dipole, assignee of the present invention has measured the sensing figure of the antennas of the modified model folded dipole 3 same structures of second embodiment as described.Fig. 4 has shown these measurement results.As shown in the figure, no matter whether the outer contact of coaxial cable is connected to the modified model folded dipole, marked change does not take place in the performance of modified model folded dipole.
Therefore, second embodiment can be connected to ground plate 4 with the outer contact 32b of coaxial cable 32 as described.Adopt this method, the coaxial cable of modified model folded dipole 3 just can be fixedly joined to ground plate 4, and like this, modified model folded dipole 3 can be established at an easy rate regularly with respect to the position of ground plate 4.
The 3rd embodiment
With reference to Fig. 5 the 3rd embodiment is described.Parts corresponding to the 3rd embodiment of first or second embodiment mark with identical label respectively, and to this further describe omission, only describe the difference with front embodiment.
Each of first and second embodiment all uses a modified model folded dipole as the antenna that has directive property in the horizontal direction.For the 3rd embodiment, modified model dipole antenna (that is, it does not comprise foldable structure) is used as the antenna that horizontal direction has directive property.Specifically be, as shown in Figure 5, the combined antenna 41 of the 3rd embodiment is made up of modified model dipole antenna 41 and patch antenna 2, and the structure of patch antenna 2 as the previous embodiment.Antenna 42 is transmission line type antennas, is made up of two elements 43 and 44 as shown in the figure.Each all is formed with element 43,44 and is basically parallel to the lateral part that ground plate 4 stretches and is basically perpendicular to the vertical component that ground plate 4 stretches.Suppose that modified model dipole antenna 42 is used to launch/receive the radio wave of 800MHz wave band, element 43 and 44 each total lengths (that is, being designated as L3 among Fig. 5) are 1/4 of 800MHz wavelength of radio wave.The center conductor 47a of coaxial cable 47 is connected to element 43, and simultaneously, the outer contact 47b of coaxial cable 47 is connected to element 44.
For present embodiment, embodiment is identical with the front, distance between ground plate 4 and the element 43 (being designated as D3 among Fig. 5) equals the distance (being designated as D4 among Fig. 5) between ground plate 4 and the element 44 substantially, that is, ground plate 4 is inserted between the element 43 and 44 of modified model dipole antenna 42 position of middle substantially.
The 3rd embodiment that has oriented antenna for above-mentioned use modified model dipole antenna 42 conducts in the horizontal direction, the same with embodiment noted earlier, the part of ground plate 4 is positioned at the sensing figure that modified model dipole antenna 42 inside can appreciable impact modified model dipole antenna 42.
Further, because antenna 42 has the modified model dipole structure, it is thin that the general shape of combined antenna 41 can be done, and in addition, it is littler that total lateral dimension of combined antenna 41 can be done, and so just can obtain the close-coupled antenna.
Alternate embodiment
It is to be noted that the present invention is not limited to the foregoing description.Very clear by description to embodiment, basic principle of the present invention is that it provides a kind of combined antenna, it by other directions beyond in the horizontal direction have directive property first antenna, form as the ground plate of first antenna ground and second antenna that has directive property in the horizontal direction.Second antenna has the above and below arm of separating fixed range each other (for example foldable structure 11 of first embodiment and foldable structure 14, or the element 43 of the 3rd embodiment and element 44), and they are extends parallel and be parallel to ground plate each other, and ground plate is installed to be has a part at least between the arm of the above and below of second antenna.Therefore ground plate to small part is comprised in the inside configuration of second antenna, so combined antenna has compact structure.Like this, in addition to the implementation, various alternative structure can be conceived to out.
In addition, for example, also should be able to be conceived to out for the following change of described embodiment.At first, might be ETC (E-payment system) antenna that is used for automotive vehicle toll payment system for the antenna that has directive property at zenith direction, and the antenna that has directive property in the horizontal direction might be used to WLAN (local area network (LAN)).
And the antenna that zenith direction has directive property needn't need antenna is directly connected to the structure of ground plate.The distance that such antenna can be designed between antenna and the ground plate equates.
Alternatively, the antenna that has directive property at zenith direction can be designed to be installed in antenna on the ground plate by a printed circuit board (PCB) or shielded box.
Claims (6)
1, a kind of combined antenna comprises:
First antenna that has directive property at zenith direction;
Ground plate, described ground plate are as the ground plate of described first antenna, and described first antenna is set at the center on the described ground plate; With
Second antenna that has directive property in the horizontal direction;
Described second antenna is the modified model folded dipole that is made of discrete component, it has the associated end that is designed to foldable structure, each foldable structure has a pair of horizontal expansion part that is parallel to each other, make first pair of horizontal expansion part and second pair of horizontal expansion part positioned opposite, and described first pair and the second pair of horizontal expansion part respectively with described ground plate orientation abreast;
Wherein, described ground plate is configured to make its at least a portion to be inserted at least a portion between described relative first and second pairs of horizontal expansions parts.
2, combined antenna as claimed in claim 1 is characterized in that, coaxial cable is connected to described second antenna, and the inner conductor of described coaxial cable is connected to described second antenna, and the outer contact of described coaxial cable is connected to described ground plate.
3, combined antenna as claimed in claim 1 is characterized in that, described first antenna is GPS (global positioning system) antenna, and described second antenna is a mobile phone antenna.
As right 1 described combined antenna, it is characterized in that 4, described first antenna is VICS (information of vehicles and communication system) antenna, and described second antenna is a mobile phone antenna.
5, a kind of combined antenna comprises:
First antenna that has directive property at zenith direction;
Ground plate, described ground plate are as the ground plate of described first antenna, and described first antenna is set at the center on the described ground plate; With
Second antenna that has directive property in the horizontal direction;
The modified model folded dipole that described second antenna is made up of a pair of element, each element have the elongated portion that is parallel to described ground plate setting, and described elongated portion is relatively arranged and the fixed interval distance;
Wherein, described ground plate is configured to make its at least a portion to be inserted at least a portion between the relative separately elongated portion of described a pair of element of described second antenna.
6, a kind of combined antenna comprises:
Have first antenna of directive property at zenith direction, as the ground plate of the described first antenna ground plate and second antenna that has directive property in the horizontal direction, described first antenna is set at the center on the described ground plate;
Described second antenna has first and second arms, and first and second arms relatively are provided with and are parallel to described ground plate respectively;
Wherein, described ground plate is configured to make its at least a portion to be inserted at least a portion between the described relative arm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004069055A JP4007332B2 (en) | 2004-03-11 | 2004-03-11 | Integrated antenna |
| JP069055/2004 | 2004-03-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1667871A CN1667871A (en) | 2005-09-14 |
| CN100456558C true CN100456558C (en) | 2009-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100543507A Expired - Fee Related CN100456558C (en) | 2004-03-11 | 2005-03-10 | Combined antenna formed by horizontal directivity antenna and zenithal directivity antenna |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4007332B2 (en) |
| CN (1) | CN100456558C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4389863B2 (en) * | 2005-10-25 | 2009-12-24 | 株式会社デンソー | Integrated antenna |
| JP4952835B2 (en) | 2009-11-20 | 2012-06-13 | 株式会社デンソー | Modified folded dipole antenna, impedance adjustment method thereof, and antenna device |
| JP5599098B2 (en) * | 2010-07-30 | 2014-10-01 | 株式会社ヨコオ | Antenna device |
| JP2013098786A (en) | 2011-11-01 | 2013-05-20 | Aisin Seiki Co Ltd | Antenna device |
| JP6131816B2 (en) | 2013-10-07 | 2017-05-24 | 株式会社デンソー | Modified folded dipole antenna |
| CN106340723B (en) * | 2015-07-10 | 2019-10-25 | 上海原田新汽车天线有限公司 | Anneta module and the antenna assembly for having the Anneta module |
| JP6304224B2 (en) | 2015-07-31 | 2018-04-04 | 株式会社デンソー | Small antenna and calculation device |
| JP6336422B2 (en) * | 2015-09-29 | 2018-06-06 | 原田工業株式会社 | Antenna device |
| ES2913661T3 (en) | 2017-11-29 | 2022-06-03 | Premo Sa | Ultra low profile triaxial low frequency antenna for integration into a mobile phone and mobile phone with the same |
| CN108400426B (en) * | 2018-01-25 | 2020-12-15 | 瑞声科技（南京）有限公司 | Antenna assembly and mobile terminal |
| EP3731245A1 (en) | 2019-04-24 | 2020-10-28 | Premo, S.A. | Ultra-low-profile low frequency antenna |
| JP2023060425A (en) * | 2021-10-18 | 2023-04-28 | ミツミ電機株式会社 | Antenna device and antenna system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0716412U (en) * | 1993-06-22 | 1995-03-17 | 島田理化工業株式会社 | Composite printed dipole antenna |
| CN1132572A (en) * | 1993-09-02 | 1996-10-02 | 国际移动卫星组织 | Folding dipole antenna |
| JP2000307341A (en) * | 1999-04-23 | 2000-11-02 | Matsushita Electric Works Ltd | Antenna system |
| JP2001196840A (en) * | 2000-01-13 | 2001-07-19 | Murata Mfg Co Ltd | Surface mounted antenna and communication apparatus provided with the antenna |
| JP2001345620A (en) * | 2000-05-31 | 2001-12-14 | Denso Corp | Mobile telephone antenna device |
| US20020058483A1 (en) * | 2000-11-13 | 2002-05-16 | Samsung Electronics Co., Ltd. | Portable communiation terminal with reduced specific absorption rate |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6141979A (en) * | 1984-08-06 | 1986-02-28 | Nec Corp | Radio wave receiving device |
| JPH06268432A (en) * | 1993-03-10 | 1994-09-22 | Hisamatsu Nakano | Loop antenna for linearly polarized on wave |
| JPH11284429A (en) * | 1998-03-27 | 1999-10-15 | Japan Radio Co Ltd | Diffraction wave suppression type microstrip antenna |
| JP2000059128A (en) * | 1998-08-06 | 2000-02-25 | Yokowo Co Ltd | Diversity antenna |
| JP2000286626A (en) * | 1999-03-29 | 2000-10-13 | Ngk Insulators Ltd | Antenna system |
| JP2001230613A (en) * | 2000-02-18 | 2001-08-24 | Matsushita Electric Ind Co Ltd | Antenna system and portable radio equipment |
| JP4510244B2 (en) * | 2000-07-19 | 2010-07-21 | パナソニック株式会社 | Antenna device |
| JP2002152353A (en) * | 2000-11-13 | 2002-05-24 | Samsung Yokohama Research Institute Co Ltd | Portable terminal |
| JP2003124719A (en) * | 2001-10-19 | 2003-04-25 | Fujitsu Ten Ltd | Onboard antenna and vehicle |
-
2004
- 2004-03-11 JP JP2004069055A patent/JP4007332B2/en not_active Expired - Fee Related
-
2005
- 2005-03-10 CN CNB2005100543507A patent/CN100456558C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0716412U (en) * | 1993-06-22 | 1995-03-17 | 島田理化工業株式会社 | Composite printed dipole antenna |
| CN1132572A (en) * | 1993-09-02 | 1996-10-02 | 国际移动卫星组织 | Folding dipole antenna |
| JP2000307341A (en) * | 1999-04-23 | 2000-11-02 | Matsushita Electric Works Ltd | Antenna system |
| JP2001196840A (en) * | 2000-01-13 | 2001-07-19 | Murata Mfg Co Ltd | Surface mounted antenna and communication apparatus provided with the antenna |
| JP2001345620A (en) * | 2000-05-31 | 2001-12-14 | Denso Corp | Mobile telephone antenna device |
| US20020058483A1 (en) * | 2000-11-13 | 2002-05-16 | Samsung Electronics Co., Ltd. | Portable communiation terminal with reduced specific absorption rate |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005260567A (en) | 2005-09-22 |
| JP4007332B2 (en) | 2007-11-14 |
| CN1667871A (en) | 2005-09-14 |
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