JPH11289207A - Antenna for mobile object communication equipment - Google Patents

Antenna for mobile object communication equipment

Info

Publication number
JPH11289207A
JPH11289207A JP9195798A JP9195798A JPH11289207A JP H11289207 A JPH11289207 A JP H11289207A JP 9195798 A JP9195798 A JP 9195798A JP 9195798 A JP9195798 A JP 9195798A JP H11289207 A JPH11289207 A JP H11289207A
Authority
JP
Japan
Prior art keywords
antenna
power supply
supply terminal
whip
round bar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9195798A
Other languages
Japanese (ja)
Inventor
Masato Sakata
正人 坂田
Masayuki Nakamura
雅之 中村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Furukawa Electric Co Ltd
Original Assignee
Furukawa Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Furukawa Electric Co Ltd filed Critical Furukawa Electric Co Ltd
Priority to JP9195798A priority Critical patent/JPH11289207A/en
Publication of JPH11289207A publication Critical patent/JPH11289207A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To suppress the occurrence of such a trouble that an antenna is folded or bent even when load is applied to an antenna head part from a horizontal direction and to manufacture the antenna by small manhour. SOLUTION: In an antenna for mobile object communication equipment provided with a helical antenna 1, a feeding terminal 2 connected to one end of the antenna 1 and a whip antenna 3 connected to the terminal 2 through a resin-made joint part 4, the terminal 2 consists of a solid round bar and has a projection part 2b, at an end part of the whip antenna 3 side, having a diameter smaller than that of the round bar part 2a. The joint part 4 is formed so as to embed the projection part 2b of the terminal 2 and the end part of the antenna 3.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、携帯電話機などの
移動体通信機器に用いられるアンテナに関するものであ
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna used for a mobile communication device such as a portable telephone.

【0002】[0002]

【従来の技術】近年、携帯電話機などの移動体通信機器
がその利便性から急速に普及している。これらの機器に
は、使用時には機器筐体から引き出し、不使用時には機
器筐体に押し込むことのできるアンテナが使用されてい
る。この種のアンテナは通常、細長いホイップアンテナ
(棒状アンテナ)と、その先端に取り付けられた短いヘ
リカルアンテナの組み合わせで構成されている(米国特
許第5,204,687 号明細書)。ホイップアンテナとヘリカ
ルアンテナは電気的には絶縁されており、機器筐体から
引き出したときはホイップアンテナが機器のアンテナと
して作動し、機器筐体に押し込んだときはヘリカルアン
テナが機器のアンテナとして作動するようになってい
る。
2. Description of the Related Art In recent years, mobile communication devices such as portable telephones have rapidly spread due to their convenience. These devices use an antenna that can be pulled out of the device housing when in use and pushed into the device housing when not in use. This type of antenna usually consists of a combination of an elongated whip antenna (rod antenna) and a short helical antenna attached to its tip (US Pat. No. 5,204,687). The whip antenna and the helical antenna are electrically insulated, and when pulled out of the equipment housing, the whip antenna operates as the equipment antenna, and when pushed into the equipment housing, the helical antenna operates as the equipment antenna It has become.

【0003】この種の移動体通信機器用アンテナにおい
て、ヘリカルアンテナとホイップアンテナとを連結する
部分の構造としては、次のようなものが提案されてい
る。 ヘリカルアンテナの給電端子を中空スリーブとし、
この中空スリーブとホイップアンテナの端部とを樹脂製
のジョイント部で連結した上で、中空スリーブにヘリカ
ルアンテナを接続する(特開平7−99404号公
報)。 ヘリカルアンテナの給電端子のホイップアンテナ側
に雌ねじ部を形成し、この雌ねじ部にホイップアンテナ
の端部に形成した雄ねじ部をねじ込み接続する(特開平
8−84017号公報)。
[0003] In this type of antenna for mobile communication equipment, the following structure has been proposed as a structure for connecting a helical antenna and a whip antenna. The feeding terminal of the helical antenna is a hollow sleeve,
After connecting the hollow sleeve and the end of the whip antenna with a resin joint, a helical antenna is connected to the hollow sleeve (Japanese Patent Laid-Open No. 7-99404). A female screw portion is formed on the whip antenna side of the power supply terminal of the helical antenna, and a male screw portion formed at the end of the whip antenna is screwed and connected to the female screw portion (Japanese Patent Application Laid-Open No. 8-84017).

【0004】[0004]

【発明が解決しようとする課題】しかし前記の構造で
はジョイント部の樹脂の外径が中空スリーブに入り込む
部分で段差状に細くなるため、この部分の強度が不足し
やすく、またの構造では限られた外径の中でのねじ結
合であるため、雌ねじ部または雄ねじ部の強度を確保す
ることが難しく、いずれの構造もアンテナ頭部に横方向
から荷重がかかると、ジョイント部が折れたり曲がった
りする等の不具合が生じることがある。またヘリカルア
ンテナとホイップアンテナを連結するのに多くの工程を
必要とするためコスト高になる。
However, in the above structure, the outer diameter of the resin in the joint portion becomes thinner in a stepped shape at the portion where it enters the hollow sleeve, so that the strength of this portion tends to be insufficient, and the other structures are limited. It is difficult to secure the strength of the internal thread or external thread because of the screw connection within the outer diameter of the joint, and when a load is applied to the antenna head from the side, the joint may break or bend. Troubles may occur. In addition, many steps are required to connect the helical antenna and the whip antenna, which increases the cost.

【0005】本発明の目的は、以上のような問題点に鑑
み、アンテナ頭部に横方向から荷重がかかっても折れた
り曲がったりする不具合が生じ難く、かつ少ない工程数
で製造できる移動体通信機器用アンテナを提供すること
にある。
SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a mobile communication system which is unlikely to break or bend even when a load is applied to the antenna head from the lateral direction and can be manufactured in a small number of steps. An object of the present invention is to provide a device antenna.

【0006】[0006]

【課題を解決するための手段】この目的を達成するため
本発明は、ヘリカルアンテナと、このヘリカルアンテナ
の一端に接続された給電端子と、この給電端子の前記ヘ
リカルアンテナと反対側に樹脂製のジョイント部を介し
て連結されたホイップアンテナとを備えた移動体通信機
器用アンテナにおいて、前記給電端子は、軸線方向の少
なくともホイップアンテナ側が中実の丸棒状になってい
て、ホイップアンテナ側の端部に丸棒状部分より小径の
突起部を有しており、前記ジョイント部は、前記給電端
子の突起部とホイップアンテナの端部を埋め込むように
形成されていることを特徴とするものである。
In order to achieve this object, the present invention provides a helical antenna, a power supply terminal connected to one end of the helical antenna, and a resin terminal provided on the opposite side of the power supply terminal from the helical antenna. An antenna for a mobile communication device comprising a whip antenna connected via a joint portion, wherein the power supply terminal has a solid round bar shape at least in the axial direction at the whip antenna side, and has an end on the whip antenna side. The joint portion is formed so as to embed the protrusion of the power supply terminal and the end of the whip antenna.

【0007】また本発明において、丸棒状部分より小径
の軸部と、この軸部の先端部または中間部に一体に形成
された丸棒状部分より小径で軸部より大径の鍔部からな
るものであることが好ましい。
Further, in the present invention, a shaft portion smaller in diameter than the round bar portion, and a flange portion smaller in diameter than the round bar portion and larger in diameter than the shaft portion formed integrally with the tip portion or intermediate portion of the shaft portion are provided. It is preferred that

【0008】[0008]

【発明の実施の形態】以下、本発明の実施形態を図面を
参照して詳細に説明する。 〔実施形態1〕図1は本発明の一実施形態を示す。図に
おいて、1は1/4波長のヘリカルアンテナ、2はヘリ
カルアンテナ1の一端に接続された給電端子、3は給電
端子2に樹脂製のジョイント部4を介して連結された1
/4波長のホイップアンテナ、5はホイップアンテナ3
の保護被覆、6は移動体通信機器の筐体7に固定された
ホルダーである。なおホイップアンテナ3の下端にはホ
イップアンテナの給電端子が設けられているが、図示を
省略してある。
Embodiments of the present invention will be described below in detail with reference to the drawings. [Embodiment 1] FIG. 1 shows an embodiment of the present invention. In the figure, 1 is a helical antenna having a quarter wavelength, 2 is a power supply terminal connected to one end of the helical antenna 1, and 3 is a power supply terminal 2 connected to a power supply terminal 2 via a joint 4 made of resin.
/ 4 wavelength whip antenna, 5 is whip antenna 3
Is a holder fixed to the housing 7 of the mobile communication device. Although a feed terminal for the whip antenna is provided at the lower end of the whip antenna 3, it is not shown.

【0009】この移動体通信機器用アンテナは、給電端
子2が中実の丸棒状になっていて、ホイップアンテナ3
側の端部に丸棒状部分2aより小径の突起部2bを有し
ている。この突起部2bは、丸棒状部分2aより小径の
軸部2b1 の先端部に、丸棒状部分2aより小径で軸部
2b1 より大径の鍔部2b2 を一体に形成した形となっ
ている。そしてジョイント部4は、前記給電端子2の突
起部2bとホイップアンテナ3の端部を埋め込むように
樹脂で形成されている。ジョイント部4の突起部2bを
埋め込む部分は丸棒状部分2aと同じ外径になってお
り、ホイップアンテナ3を埋め込む部分はホルダー6へ
の挿入をスムーズにするため端部へ行くほど外径が小さ
くなっている。
In this mobile communication device antenna, the power supply terminal 2 has a solid round rod shape, and the whip antenna 3
At the end on the side, a protrusion 2b having a smaller diameter than the round bar-shaped portion 2a is provided. The protrusion 2b is the front end portion of the small-diameter shaft portion 2b 1 from round bar portion 2a, a shank 2b 1 than the large diameter of the flange portion 2b 2 smaller in diameter than the rod-shaped portion 2a becomes the form which is formed integrally I have. The joint 4 is formed of resin so as to embed the protrusion 2 b of the power supply terminal 2 and the end of the whip antenna 3. The portion of the joint portion 4 in which the projection 2b is embedded has the same outer diameter as the round bar-shaped portion 2a, and the portion in which the whip antenna 3 is embedded has a smaller outer diameter toward the end in order to facilitate insertion into the holder 6. Has become.

【0010】このような構造にすると、給電端子2の強
度を高めることができると共に、給電端子2とジョイン
ト部4との結合部分の強度を高めることができるので、
アンテナ頭部に横方向から荷重がかかっても折れたり曲
がったりする不具合が生じ難くなる。なおヘリカルアン
テナ1は、その外接円筒面より内側に充填成形されたヘ
ッド樹脂部8により一定ピッチに保たれ、かつその外周
には樹脂被覆9が施されている。
With this structure, the strength of the power supply terminal 2 can be increased, and the strength of the joint between the power supply terminal 2 and the joint 4 can be increased.
Even if a load is applied to the head of the antenna from the lateral direction, the antenna is unlikely to be broken or bent. The helical antenna 1 is maintained at a constant pitch by a head resin portion 8 which is filled inside the circumscribed cylindrical surface, and a resin coating 9 is applied to the outer periphery.

【0011】各部の寸法、材質の一例を示すと次のとお
りである。ヘリカルアンテナ1は0.4mmのバネ鋼線に
銅メッキを施した線材を外径4.5mm、ピッチ1.5mm
で約8ターン巻回したものである(ヘリカルアンテナの
材質はバネ鋼線にニッケルメッキを施したものや、銅合
金線等でもよい)。ヘリカルアンテナ1の一端は給電端
子2の一端に、線材の弾性を利用した締め付け結合、カ
シメ、圧着または半田付け等により固定されている。給
電端子2の材質は黄銅又はアルミニウム合金である。給
電端子2の丸棒状部分2aの外径は2.7mm、突起部2
bの軸部の外径は1.2mm、鍔部の外径は1.6mmであ
る。突起部2bの長さは1.6mmである。ホイップアン
テナ3はNi−Ti合金などの超弾性合金線を用い、外
径は0.8mmである。ジョイント部4の樹脂はエンジニ
アリングプラスチックのような強度が高く誘電率が低い
ものがよく、例えばポリイミド系樹脂が好適である。ポ
リイミド系樹脂以外にも、ナイロン、ポリアセタール、
ポリエーテルケトン等を用いることができる。
An example of the dimensions and materials of each part is as follows. The helical antenna 1 is made of a 0.4 mm spring steel wire plated with copper and has a diameter of 4.5 mm and a pitch of 1.5 mm.
(The material of the helical antenna may be a spring steel wire plated with nickel, a copper alloy wire or the like). One end of the helical antenna 1 is fixed to one end of the power supply terminal 2 by tightening, crimping, crimping, soldering, or the like utilizing the elasticity of the wire. The material of the power supply terminal 2 is brass or an aluminum alloy. The outer diameter of the round bar-shaped portion 2a of the power supply terminal 2 is 2.7 mm, and the protrusion 2
The outer diameter of the shaft portion of b is 1.2 mm, and the outer diameter of the flange portion is 1.6 mm. The length of the projection 2b is 1.6 mm. The whip antenna 3 uses a superelastic alloy wire such as a Ni-Ti alloy and has an outer diameter of 0.8 mm. The resin of the joint portion 4 is preferably a resin having a high strength and a low dielectric constant, such as engineering plastic. For example, a polyimide resin is preferable. In addition to polyimide resin, nylon, polyacetal,
Polyether ketone or the like can be used.

【0012】次に上記構成のアンテナの製造方法を図2
を参照して説明する。ヘリカルアンテナ1の一端に給電
端子2を接続した状態で、給電端子2を二つ割りの金型
11で保持し、ヘリカルアンテナ1を金型11の第一の
キャビティ12内にセットする。またホイップアンテナ
3は、その端部が金型11の第二のキャビティ13内に
位置するように金型11で保持する。ホイップアンテナ
3と給電端子2との間には約3mmの間隔をあける。また
第一のキャビティ12の内径はヘリカルアンテナ1の外
径より0〜0.05mm小さくしておき、射出成形圧力で
ヘリカルアンテナ1が動かないように金型11でヘリカ
ルアンテナ1を押さえ込む。
Next, a method of manufacturing the antenna having the above configuration is shown in FIG.
This will be described with reference to FIG. With the power supply terminal 2 connected to one end of the helical antenna 1, the power supply terminal 2 is held by a split mold 11, and the helical antenna 1 is set in the first cavity 12 of the mold 11. The whip antenna 3 is held by the mold 11 so that its end is located in the second cavity 13 of the mold 11. An interval of about 3 mm is provided between the whip antenna 3 and the feed terminal 2. The inner diameter of the first cavity 12 is set to be smaller than the outer diameter of the helical antenna 1 by 0 to 0.05 mm, and the helical antenna 1 is pressed by the mold 11 so that the helical antenna 1 is not moved by the injection molding pressure.

【0013】こうしておいて樹脂をキャビティ12、1
3内に射出し、ヘッド樹脂部8およびジョイント部4を
成形する。ポリイミド系樹脂を用いる場合は、樹脂温度
200℃、射出圧力80MPaで成形できる。このあと
樹脂被覆9を形成するが、本発明のアンテナはジョイン
ト部4とヘッド樹脂部8を同時に形成できるので、製造
も簡単である。
In this way, the resin is poured into the cavities 12, 1
3 to form a head resin part 8 and a joint part 4. When a polyimide resin is used, molding can be performed at a resin temperature of 200 ° C. and an injection pressure of 80 MPa. Thereafter, the resin coating 9 is formed. Since the joint 4 and the head resin portion 8 can be formed at the same time, the antenna of the present invention is simple to manufacture.

【0014】〔実施形態2〕図3は本発明の他の実施形
態を示す。このアンテナが図1のものと異なる点は、ジ
ョイント部4のホイップアンテナ3側の端部に小径部4
aを形成し、この小径部4a上にホイップアンテナ3と
共通の保護被覆5を設けたものである。
[Embodiment 2] FIG. 3 shows another embodiment of the present invention. This antenna is different from that of FIG. 1 in that a small diameter portion 4 is provided at the end of the joint portion 4 on the whip antenna 3 side.
a, and a protective coating 5 common to the whip antenna 3 is provided on the small diameter portion 4a.

【0015】このアンテナを製造する場合には、図4に
示すように、保護被覆を施す前のホイップアンテナ3を
金型11にセットし、金型11には第二のキャビティ1
3の前記小径部4aに相当する位置にゲートを設ける。
この状態でジョイント部4を形成した後、図3のように
保護被覆5を形成すれば、ジョイント部4のゲート跡は
保護被覆5に覆われてしまうため、ジョイント部4の外
観を良好なものとすることができる。上記以外のアンテ
ナの構成、製造方法および効果等は実施形態1と同じで
あるので、同一部分には同一符号を付して説明を省略す
る。
When manufacturing this antenna, as shown in FIG. 4, the whip antenna 3 before applying the protective coating is set in a mold 11 and the second cavity 1 is placed in the mold 11.
3, a gate is provided at a position corresponding to the small diameter portion 4a.
If the protective coating 5 is formed as shown in FIG. 3 after the joint 4 is formed in this state, the gate mark of the joint 4 is covered with the protective coating 5, so that the appearance of the joint 4 is good. It can be. Since the configuration, manufacturing method, effects, and the like of the antenna other than those described above are the same as those of the first embodiment, the same portions are denoted by the same reference numerals and description thereof will be omitted.

【0016】〔実施形態3〕図5は本発明のさらに他の
実施形態を示す。このアンテナが図1のものと異なる点
は、ジョイント部4の外径を全長にわたって図1のもの
より小さくし、ジョイント部4の全外周にホイップアン
テナ3と共通の保護被覆5を設けたものである。このよ
うな構成でも実施形態2と同様な効果を得ることができ
る。上記以外の構成、製造方法および効果等は実施形態
1と同じであるので、同一部分には同一符号を付して説
明を省略する。
[Embodiment 3] FIG. 5 shows still another embodiment of the present invention. This antenna is different from that of FIG. 1 in that the outer diameter of the joint portion 4 is made smaller than that of FIG. 1 over the entire length, and the entire outer periphery of the joint portion 4 is provided with a protective coating 5 common to the whip antenna 3. is there. Even with such a configuration, the same effect as in the second embodiment can be obtained. Since the configuration, manufacturing method, effects, and the like other than the above are the same as those of the first embodiment, the same portions are denoted by the same reference numerals and description thereof will be omitted.

【0017】[0017]

【発明の効果】以上説明したように本発明に係る移動体
通信機器用アンテナは、給電端子が中実丸棒状であるた
め給電端子の強度が高く、かつ給電端子端部の突起部を
ジョイント部の樹脂中に埋め込む構造であるため給電端
子とジョイント部の結合強度も高い。このためアンテナ
頭部に横荷重がかかっても折れたり曲がったりする不具
合が生じ難いという利点がある。また少ない工程数で製
造できるので、コストを安くできる。
As described above, in the antenna for mobile communication equipment according to the present invention, the power supply terminal has a solid round rod shape, so that the strength of the power supply terminal is high, and the protrusion at the end of the power supply terminal is connected to the joint. Because of the structure embedded in the resin, the coupling strength between the power supply terminal and the joint is high. For this reason, there is an advantage that even if a lateral load is applied to the head of the antenna, the antenna is unlikely to be broken or bent. In addition, since it can be manufactured with a small number of steps, the cost can be reduced.

【図面の簡単な説明】[Brief description of the drawings]

【図1】 本発明に係るアンテナの一実施形態を示す断
面図。
FIG. 1 is a sectional view showing an embodiment of an antenna according to the present invention.

【図2】 図1のアンテナの製造方法の一例を示す断面
図。
FIG. 2 is a sectional view showing an example of a method for manufacturing the antenna of FIG.

【図3】 本発明に係るアンテナの他の実施形態を示す
断面図。
FIG. 3 is a sectional view showing another embodiment of the antenna according to the present invention.

【図4】 図3のアンテナの製造方法の一例を示す断面
図。
FIG. 4 is a sectional view showing an example of a method for manufacturing the antenna of FIG.

【図5】 本発明に係るアンテナのさらに他の実施形態
を示す断面図。
FIG. 5 is a sectional view showing still another embodiment of the antenna according to the present invention.

【符号の説明】[Explanation of symbols]

1:ヘリカルアンテナ 2:給電端子 2a:丸棒状部分 2b:突起部 2b1 :軸部 2b2 :鍔部 3:ホイップアンテナ 4:ジョイント部 8:ヘッド樹脂部 9:樹脂被覆1: the helical antenna 2: feeding terminal 2a: round bar portion 2b: protrusion 2b 1: shaft portion 2b 2: flange portion 3: whip antenna 4: joint portion 8: Head Resin 9: resin coated

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】ヘリカルアンテナと、このヘリカルアンテ
ナの一端に接続された給電端子と、この給電端子の前記
ヘリカルアンテナと反対側に、樹脂製のジョイント部を
介して連結されたホイップアンテナとを備えた移動体通
信機器用アンテナにおいて、前記給電端子は、中実の丸
棒状になっていて、ホイップアンテナ側の端部に前記丸
棒状部分より小径の突起部を有しており、前記ジョイン
ト部は、前記給電端子の突起部とホイップアンテナの端
部を埋め込むように形成されていることを特徴とする移
動体通信機器用アンテナ。
1. A helical antenna, a power supply terminal connected to one end of the helical antenna, and a whip antenna connected to a side of the power supply terminal opposite to the helical antenna via a resin joint. In the mobile communication device antenna, the power supply terminal has a solid round bar shape, and has a protrusion having a smaller diameter than the round bar portion at an end on the whip antenna side, and the joint portion has An antenna for a mobile communication device, which is formed so as to embed the projection of the power supply terminal and the end of the whip antenna.
【請求項2】給電端子の突起部は、丸棒状部分より小径
の軸部と、この軸部の先端部または中間部に一体に形成
された丸棒状部分より小径で軸部より大径の鍔部からな
ることを特徴とする請求項1記載の移動体通信機器用ア
ンテナ。
2. A projection having a diameter smaller than that of a round bar portion, and a flange having a diameter smaller than that of the round bar portion formed integrally with a tip portion or an intermediate portion of the shaft portion. The antenna for a mobile communication device according to claim 1, wherein the antenna comprises a unit.
JP9195798A 1998-04-03 1998-04-03 Antenna for mobile object communication equipment Pending JPH11289207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9195798A JPH11289207A (en) 1998-04-03 1998-04-03 Antenna for mobile object communication equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9195798A JPH11289207A (en) 1998-04-03 1998-04-03 Antenna for mobile object communication equipment

Publications (1)

Publication Number Publication Date
JPH11289207A true JPH11289207A (en) 1999-10-19

Family

ID=14041056

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9195798A Pending JPH11289207A (en) 1998-04-03 1998-04-03 Antenna for mobile object communication equipment

Country Status (1)

Country Link
JP (1) JPH11289207A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100464778B1 (en) * 2001-07-16 2005-01-05 유병훈 Antenna
US6897825B2 (en) 2001-10-29 2005-05-24 Samsung Electronics Co., Ltd. Antenna apparatus for folder type mobile phone
JP2008252671A (en) * 2007-03-30 2008-10-16 Clarion Co Ltd Method of manufacturing helical antenna
JP2013541246A (en) * 2010-08-11 2013-11-07 コンパニー ゼネラール デ エタブリッスマン ミシュラン Method for manufacturing antenna for electronic device in tire

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100464778B1 (en) * 2001-07-16 2005-01-05 유병훈 Antenna
US6897825B2 (en) 2001-10-29 2005-05-24 Samsung Electronics Co., Ltd. Antenna apparatus for folder type mobile phone
JP2008252671A (en) * 2007-03-30 2008-10-16 Clarion Co Ltd Method of manufacturing helical antenna
JP2013541246A (en) * 2010-08-11 2013-11-07 コンパニー ゼネラール デ エタブリッスマン ミシュラン Method for manufacturing antenna for electronic device in tire
US9496618B2 (en) 2010-08-11 2016-11-15 Compagnie Generale Des Etablissements Michelin Process for manufacturing an antenna for an electronic device in a tyre

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