JPH07212835A - Portable radio communication equipment - Google Patents
Portable radio communication equipmentInfo
- Publication number
- JPH07212835A JPH07212835A JP6004202A JP420294A JPH07212835A JP H07212835 A JPH07212835 A JP H07212835A JP 6004202 A JP6004202 A JP 6004202A JP 420294 A JP420294 A JP 420294A JP H07212835 A JPH07212835 A JP H07212835A
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- selective call
- call receiver
- battery pack
- mobile phone
- 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
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、携帯電話と選択呼出受
信機を組み合わせて成る携帯無線通信装置に係り、詳し
くは、組み合わせられた選択呼出受信機の受信感度低下
を防止するための回路構造の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable radio communication apparatus comprising a mobile telephone and a selective call receiver in combination, and more specifically, a circuit structure for preventing a decrease in the reception sensitivity of the combined selective call receiver. Regarding the improvement of.
【０００２】[0002]
【従来の技術】従来、選択呼出受信機と携帯電話は各々
独立して使用されていたが、この使用方法では、携帯電
話は常時待ち受け状態に保持しておく必要があり、携帯
電話の消費電流の浪費が甚だしく、携帯電話と選択呼出
受信機を同時に使用するメリットが極めて少なかった。2. Description of the Related Art Conventionally, a selective call receiver and a mobile phone have been used independently, but in this method of use, it is necessary to keep the mobile phone in a stand-by state at all times. It was extremely wasteful, and the merit of using a mobile phone and a selective call receiver at the same time was extremely small.
【０００３】この解消策として、従来は、携帯電話と選
択呼出受信機を一体構造とし、選択呼出受信機の受信信
号により、携帯電話を起動する構成のものがあった。こ
の構成によれば、携帯電話を常時待ち受け状態に保持す
る必要はなく、相応の消費電流の節約が図れる。As a solution to this problem, conventionally, there has been a structure in which a mobile phone and a selective call receiver are integrally structured, and the mobile phone is activated by a signal received by the selective call receiver. According to this configuration, it is not necessary to keep the mobile phone in a standby state at all times, and a corresponding reduction in current consumption can be achieved.
【０００４】しかしながら、この方法によれば、携帯電
話のシールドケース、バッテリ及び各インタフェース端
子類により、到来受信電波が遮断され、選択呼出受信機
のループアンテナの放射効率が低下し、呼出感度が劣化
することになった。However, according to this method, the shield case of the mobile phone, the battery, and the interface terminals block incoming radio waves, and the radiation efficiency of the loop antenna of the selective call receiver is lowered, so that the call sensitivity is deteriorated. I decided to do it.
【０００５】このため、選択呼出受信機の受信機能をあ
てにして携帯電話を完全に動作停止したままで運用する
と、着信に際して携帯電話を起動できないこともあり、
円滑な運用がきなかった。For this reason, if the mobile phone is operated with the receiving function of the selective call receiver being completely stopped, the mobile phone may not be activated when receiving a call.
The operation was not smooth.
【０００６】[0006]
【発明が解決しようとする課題】このように上記従来の
装置では、携帯電話のシールドケース、あるいはバッテ
リ及び各インタフェース端子類により到来電波が阻まれ
て、この携帯電話に組み込まれる選択呼出受信機の呼出
感度が低下し、選択呼出受信機の受信機能により携帯電
話を起動するという運用に支障を来すという問題点があ
った。As described above, in the above-mentioned conventional device, the shield case of the mobile phone, the battery and the interface terminals block the incoming radio waves, so that the selective call receiver incorporated in the mobile phone is provided. There is a problem that the call sensitivity is lowered and the operation of starting the mobile phone by the receiving function of the selective call receiver is hindered.
【０００７】本発明は上記問題点を除去し、携帯電話に
組み込む選択呼出受信機の受信感度を良好に維持し、選
択呼出受信機の受信機能により携帯電話を起動するとい
う運用動作の安定化に寄与する携帯無線通信装置を提供
することを目的とする。The present invention eliminates the above-mentioned problems, maintains good reception sensitivity of a selective call receiver incorporated in a mobile phone, and stabilizes the operation operation of activating the mobile phone by the receiving function of the selective call receiver. An object is to provide a portable wireless communication device that contributes.
【０００８】[0008]
【課題を解決するための手段】本発明は、携帯電話と選
択呼出受信機を組み合わせて成る携帯無線通信装置にお
いて、前記携帯電話のバッテリパック内に第１のアンテ
ナを内蔵するとともに、前記選択呼出受信機に第２のア
ンテナを内蔵し、前記第１のアンテナと前記第２のアン
テナが任意の距離だけ離間し、かつ偏波面が互いに合う
ような位置関係を保って保持されるべく、前記バッテリ
パック内に前記選択呼出受信機を収容することを特徴と
する。According to the present invention, there is provided a portable radio communication device comprising a portable telephone and a selective call receiver in combination, wherein a first antenna is incorporated in a battery pack of the portable telephone and the selective call is made. A second antenna is built in the receiver, the first antenna and the second antenna are separated by an arbitrary distance, and the battery is held so as to maintain a positional relationship such that polarization planes thereof are aligned with each other. The selective call receiver is housed in a pack.
【０００９】[0009]
【作用】本発明では、着信電波があると、バッテリパッ
ク内の第１のアンテナに電流が導通し、これにより発生
した磁束により、バッテリパックに組み込まれている選
択呼出受信機の第２のアンテナにも導通が生じ、第２の
アンテナの放射効率が改善される。In the present invention, when there is an incoming radio wave, a current is conducted to the first antenna in the battery pack, and the magnetic flux generated thereby causes the second antenna of the selective call receiver incorporated in the battery pack. Conduction also occurs, and the radiation efficiency of the second antenna is improved.
【００１０】この第１と第２のアンテナ間における誘導
結合によって、選択呼出受信機がたとえ携帯電話のシー
ルドケース内に収容された状態であっても、その受信感
度を自受信機単独の場合と同等以上のレベルに維持でき
る。Due to the inductive coupling between the first and second antennas, even if the selective call receiver is housed in the shield case of the mobile phone, its reception sensitivity is different from that of the self receiver alone. Can be maintained at the same or higher level.
【００１１】[0011]
【実施例】以下、本発明の一実施例を添付図面に基づい
て詳細に説明する。図１は本発明に係る携帯無線通信装
置の全体構造を示す分解斜視図であり、携帯電話５０に
対してバッテリパック３０が着脱自在に構成されてい
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is an exploded perspective view showing the overall structure of a mobile wireless communication device according to the present invention, in which a battery pack 30 is detachably attached to a mobile phone 50.
【００１２】更に、このバッテリパック３０は選択呼出
受信機１０を収容可能に構成され、その選択呼出受信機
１０を収容した状態で、図１に矢印で示される方向へ動
かしながら携帯電話５０に装着できるようになってい
る。Further, the battery pack 30 is constructed so as to be able to accommodate the selective call receiver 10, and is attached to the portable telephone 50 while moving in the direction indicated by the arrow in FIG. 1 with the selective call receiver 10 accommodated. You can do it.
【００１３】図２は、バッテリパック３０に対する選択
呼出受信機１０の収容態様を示す斜視図である。同図に
示す如く、バッテリパック３０には選択呼出受信機１０
の形状に見合った収容部が設けられ、その収容部に対し
て選択呼出受信機１０を同図の矢印方向にスライドさせ
つつ組み込むことができる。FIG. 2 is a perspective view showing how the selective call receiver 10 is accommodated in the battery pack 30. As shown in the figure, the selective call receiver 10 is included in the battery pack 30.
The accommodation unit corresponding to the shape is provided, and the selective call receiver 10 can be incorporated into the accommodation unit while sliding in the arrow direction in the figure.
【００１４】ここで、バッテリパック３０は大容量バッ
テリパックの一部を選択呼出受信機１０の収容部として
加工し、更にその収容部に隣接して外部アンテナ３１を
内蔵したものである。一方、その収容部に収容可能な選
択呼出受信機１０は内部ループアンテナ１１を有してい
る。Here, the battery pack 30 is obtained by processing a part of a large-capacity battery pack as a housing portion of the selective call receiver 10 and further incorporating an external antenna 31 adjacent to the housing portion. On the other hand, the selective call receiver 10 that can be accommodated in the accommodation section has an internal loop antenna 11.
【００１５】図３は、内部ループアンテナ１１と外部ア
ンテナ３１の具体的な取付態様を示すものであり、択呼
出受信機１０をバッテリパック３０の収容部に収容した
状態において、任意の距離ｄ1 を隔てかつ偏波面を合わ
せた位置に配設されている。なお、同図におけるその他
の構成として、符号１２は選択呼出受信機１０の無線部
基板であり、符号３２は同調用のコンデンサである。FIG. 3 shows a specific mounting mode of the inner loop antenna 11 and the outer antenna 31. When the selective call receiver 10 is accommodated in the accommodating portion of the battery pack 30, an arbitrary distance d1 is set. They are arranged apart from each other and with their polarization planes aligned. In addition, as other configurations in the figure, reference numeral 12 is a radio section substrate of the selective call receiver 10, and reference numeral 32 is a tuning capacitor.
【００１６】ここで、外部アンテナ３１は、選択呼出受
信機１０の受信周波数と同調をとったものである。この
外部アンテナ３１は、携帯電話５０にバッテリパック３
０を装着した実際の運用状態において、装置外部に面す
ることから、十分な放射効率を持つことになる。Here, the external antenna 31 is tuned to the reception frequency of the selective call receiver 10. The external antenna 31 is used for the battery pack 3 in the mobile phone 50.
In the actual operating state where 0 is attached, since it faces the outside of the device, it has sufficient radiation efficiency.
【００１７】かかる構造を有する本発明装置における受
信動作を、図４に示す原理図を用いて説明する。この原
理図において、符号７０は１次側コイルであり、符号９
０は２次側コイルである。また、符号７１と符号９１は
同調用コンデンサであり、符号９２はアンテナ負荷回路
である。到来電波によって１次側コイル７０に電流が流
れると、磁束φが生じ、いわゆる誘導結合によって２次
側コイル９０にも電流が流れる。The receiving operation in the device of the present invention having such a structure will be described with reference to the principle diagram shown in FIG. In this principle diagram, reference numeral 70 is a primary coil and reference numeral 9
Reference numeral 0 is a secondary coil. Reference numerals 71 and 91 are tuning capacitors, and reference numeral 92 is an antenna load circuit. When a current flows through the primary coil 70 due to an incoming radio wave, a magnetic flux φ is generated, and a current also flows through the secondary coil 90 due to so-called inductive coupling.
【００１８】本発明はこの誘導結合の原理を応用した技
術であり、図３の構成において、バッテリパック３０に
内蔵された外部アンテナ３１は上記原理図における１次
側アンテナ７０に相当し、選択呼出受信機１０の内部ル
ープアンテナ１１が上記原理図における２次側アンテナ
９０に相当する。The present invention is a technique to which the principle of this inductive coupling is applied. In the configuration of FIG. 3, the external antenna 31 built in the battery pack 30 corresponds to the primary side antenna 70 in the above-mentioned principle diagram, and selectively calls. The internal loop antenna 11 of the receiver 10 corresponds to the secondary antenna 90 in the above principle diagram.
【００１９】かかる構成において、先に述べた原理の如
く、１次側アンテナに相当する外部アンテナ３１が到来
電波を受信すると、この外部アンテナ３１に電流が流れ
ることによって磁束が生じ、２次側アンテナである選択
呼出受信機１０の内部ループアンテナ１１と誘導結合す
る。In such a structure, when the external antenna 31 corresponding to the primary side antenna receives an incoming radio wave as described above, a current flows through the external antenna 31 to generate a magnetic flux, and a secondary side antenna is generated. Is inductively coupled to the internal loop antenna 11 of the selective call receiver 10.
【００２０】この誘導結合によって、内部ループアンテ
ナ１１にも電流が流れるため、この内部ループアンテナ
１１も本来の放射効率以上となる。従って、携帯電話５
０のシールドケース、部品、バッテリ等により放射効率
が本来のレベルより低下している場合にも、その放射効
率を改善でき、選択呼出受信機１０の呼出感度の劣化を
最小限に抑えることができる。Due to this inductive coupling, a current also flows through the inner loop antenna 11, so that the inner loop antenna 11 has a radiation efficiency higher than the original radiation efficiency. Therefore, the mobile phone 5
Even if the radiation efficiency is lower than the original level due to the shield case of 0, parts, battery, etc., the radiation efficiency can be improved, and deterioration of the calling sensitivity of the selective call receiver 10 can be minimized. .
【００２１】このように、本発明では携帯電話５０のバ
ッテリパック３０に内蔵したループアンテナ３１を１次
側アンテナとし、選択呼出受信機１０の内蔵アンテナ１
１を２次側アンテナとしたうえで、両アンテナを任意の
距離を隔て、かつ偏波面を合わせた位置に配置すること
により、これら両アンテナ間の誘導結合を利用して２次
側アンテナの受信感度を良好に維持することができる。As described above, in the present invention, the loop antenna 31 built in the battery pack 30 of the mobile phone 50 is used as the primary antenna, and the built-in antenna 1 of the selective call receiver 10 is used.
By using 1 as the secondary side antenna, and arranging both antennas at an arbitrary distance and at positions where the polarization planes are aligned, the secondary side antenna is received by using the inductive coupling between these two antennas. It is possible to maintain good sensitivity.
【００２２】ここで、本発明装置の受信感度特性につい
て、図５を参照して説明する。図５において、曲線ａ1
は選択呼出受信機単体での受信感度特性であり、曲線ａ
2 は外部アンテナ３１と選択呼出受信機１０の内部ルー
プアンテナ１１間の距離に対する選択呼出受信機１０の
受信感度特性を示している。Now, the reception sensitivity characteristic of the device of the present invention will be described with reference to FIG. In FIG. 5, the curve a1
Is the reception sensitivity characteristic of the selective call receiver alone, and is the curve a
Reference numeral 2 denotes the reception sensitivity characteristic of the selective call receiver 10 with respect to the distance between the external antenna 31 and the internal loop antenna 11 of the selective call receiver 10.
【００２３】なお、この特性にかかるアンテナの構成条
件は、特に、外部ループアンテナ３１の材質は銅製で幅
１. ０mm、厚さ０. ５mm、開口面積２８０mm2 とし、選
択呼出受信機１０の内部ループアンテナ１１の材質は銅
製で幅２. ０mm、厚さ０. ５mmの２重ループ構造、開口
面積４７０mm2 のアンテナとした場合の例である。The construction conditions of the antenna relating to this characteristic are, in particular, that the material of the external loop antenna 31 is copper and the width is 1.0 mm, the thickness is 0.5 mm, and the opening area is 280 mm 2. The material of the loop antenna 11 is an example in which the antenna is made of copper and has a double loop structure with a width of 2.0 mm and a thickness of 0.5 mm and an opening area of 470 mm 2 .
【００２４】この場合、図５の特性ａ2 からも分かるよ
うに、アンテナ間距離１５mmで５dBの受信感度の改善が
あることが認められる。In this case, as can be seen from the characteristic a2 in FIG. 5, it is recognized that the reception sensitivity is improved by 5 dB when the distance between the antennas is 15 mm.
【００２５】上記実施例で述べたように、本発明では、
携帯電話５０の大容量バッテリパック３０の一部を加工
し、そこに選択呼出受信機１０を組み込むものである。
この構造によって、携帯電話５０のバッテリパック３０
は、選択呼出受信機１０の収容部相当分のバッテリ容量
が損なわれることになる。As described in the above embodiment, in the present invention,
A part of the large capacity battery pack 30 of the mobile phone 50 is processed and the selective call receiver 10 is incorporated therein.
With this structure, the battery pack 30 of the mobile phone 50
Would impair the battery capacity corresponding to the accommodating portion of the selective call receiver 10.
【００２６】しかしながら、上記本発明の構造によれ
ば、選択呼出受信機１０をバッテリパック３０に組み込
み、更にバッテリパック３０を携帯電話５０に装着完了
した際、上記誘導結合によって、選択呼出受信機１０の
受信感度を良好に保つことができることから、携帯電話
５０を常時待ち受け状態としておく必要がなくなる。However, according to the structure of the present invention, when the selective call receiver 10 is incorporated in the battery pack 30 and the battery pack 30 is completely attached to the mobile phone 50, the selective call receiver 10 is caused by the inductive coupling. Since it is possible to maintain good reception sensitivity of the mobile phone 50, it is not necessary to keep the mobile phone 50 in the standby state at all times.
【００２７】従って、その分だけ消費電流を削減できる
ことになり、上述の如く選択呼出受信機１０の収容部に
相当するバッテリ容量の減少を十分に補うことができ、
実用上何等問題を生じることはない。Therefore, the current consumption can be reduced accordingly, and the decrease in the battery capacity corresponding to the accommodating portion of the selective call receiver 10 can be sufficiently compensated as described above.
In practice, it will not cause any problems.
【００２８】[0028]
【発明の効果】以上説明したように、本発明によれば、
携帯電話のバッテリパック内部の第１のアンテナと、選
択呼出受信機内部の第２のアンテナとの誘導結合を生起
し得るようにバッテリパックに対して選択呼出受信機を
組み込む構成としたため、選択呼出受信機を携帯電話に
組み込んだにも拘らずその受信感度を自受信機単独の場
合と同等以上のレベルに維持でき、選択呼出受信機の受
信機能により携帯電話を起動させるという動作の安定化
を図り、携帯電話を常時待ち受け状態にしておく必然性
を完全に排除しながら、低消費電流化にも寄与できると
いう優れた利点を有する。As described above, according to the present invention,
The selective call receiver is incorporated in the battery pack so as to cause inductive coupling between the first antenna inside the battery pack of the mobile phone and the second antenna inside the selective call receiver. Despite incorporating the receiver into the mobile phone, its receiving sensitivity can be maintained at a level equal to or higher than that of its own receiver, and the operation of activating the mobile phone by the receiving function of the selective call receiver is stabilized. As a result, it has an excellent advantage that it can contribute to low current consumption while completely eliminating the necessity of keeping the mobile phone in the standby state at all times.
【図１】本発明の一実施例に係る携帯無線通信装置の全
体構造を示す分解斜視図。FIG. 1 is an exploded perspective view showing an overall structure of a mobile wireless communication device according to an embodiment of the present invention.
【図２】本発明の携帯無線通信装置におけるバッテリパ
ックと選択呼出受信機との実装態様を示す斜視図。FIG. 2 is a perspective view showing a mounting mode of the battery pack and the selective call receiver in the portable wireless communication device of the present invention.
【図３】本発明の携帯無線通信装置におけるバッテリパ
ック内アンテナと選択呼出受信機内アンテナの実装例を
示す概念図。FIG. 3 is a conceptual diagram showing an implementation example of an antenna in a battery pack and an antenna in a selective call receiver in a portable wireless communication device of the present invention.
【図４】本発明の携帯無線通信装置のアンテナ受信原理
を説明するための回路図。FIG. 4 is a circuit diagram for explaining the antenna reception principle of the portable wireless communication device of the present invention.
【図５】本発明の携帯無線通信装置の受信感度特性の一
例を示す図。FIG. 5 is a diagram showing an example of reception sensitivity characteristics of the portable wireless communication device of the present invention.
１０ 選択呼出受信機 １１ 内部ループアンテナ １２ 無線部基板 ３０ 携帯電話のバッテリパック ３１ 外部アンテナ ３２ 同調用コンデンサ ５０ 携帯電話 ７０ １次側アンテナ ９０ ２次側アンテナ ７１，９１ 同調用コンデンサ ９２ アンテナ負荷回路 10 Selective Call Receiver 11 Internal Loop Antenna 12 Radio Board 30 Cell Phone Battery Pack 31 External Antenna 32 Tuning Capacitor 50 Cell Phone 70 Primary Antenna 90 Secondary Antenna 71, 91 Tuning Capacitor 92 Antenna Load Circuit
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 7605−5Ｋ Ｈ０４Ｂ 7/26 Ｖ (72)発明者 松島 仁 東京都日野市旭が丘３丁目１番地の21 東 芝コミュニケーションテクノロジ株式会社 内─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 6 Identification number Reference number within the agency FI Technical indication location 7605-5K H04B 7/26 V (72) Inventor Hitoshi Matsushima 3-1, Asahigaoka, Hino City, Tokyo 21 Toshiba Communication Technology Co., Ltd.
Claims (1)
て成る携帯無線通信装置において、 前記携帯電話のバッテリパック内に第１のアンテナを内
蔵するとともに、前記選択呼出受信機に第２のアンテナ
を内蔵し、前記第１のアンテナと前記第２のアンテナが
任意の距離だけ離間し、かつ偏波面が互いに合うような
位置関係を保って保持されるべく、前記バッテリパック
内に前記選択呼出受信機を収容することを特徴とする携
帯無線通信装置。1. A portable wireless communication device comprising a combination of a mobile phone and a selective call receiver, wherein a first antenna is built in a battery pack of the mobile phone, and a second antenna is provided in the selective call receiver. The selective call receiver incorporated in the battery pack so that the first antenna and the second antenna are separated from each other by an arbitrary distance and are held in a positional relationship such that their polarization planes match each other. A portable wireless communication device, which accommodates
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6004202A JPH07212835A (en) | 1994-01-19 | 1994-01-19 | Portable radio communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6004202A JPH07212835A (en) | 1994-01-19 | 1994-01-19 | Portable radio communication equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07212835A true JPH07212835A (en) | 1995-08-11 |
Family
ID=11578076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6004202A Pending JPH07212835A (en) | 1994-01-19 | 1994-01-19 | Portable radio communication equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07212835A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990038147A (en) * | 1997-11-03 | 1999-06-05 | 전주범 | Cell phone with built-in antenna |
| KR20010044821A (en) * | 2001-03-29 | 2001-06-05 | 전중수 | A handiphone with battery combined in antenna |
| KR100346599B1 (en) * | 1998-01-30 | 2002-07-26 | 마츠시타 덴끼 산교 가부시키가이샤 | Built-in antenna for radio communication terminals |
| US8715533B2 (en) | 2004-12-17 | 2014-05-06 | Asahi R&D Co., Ltd. | Dielectric raw material, antenna device, portable phone and electromagnetic wave shielding body |
-
1994
- 1994-01-19 JP JP6004202A patent/JPH07212835A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990038147A (en) * | 1997-11-03 | 1999-06-05 | 전주범 | Cell phone with built-in antenna |
| KR100346599B1 (en) * | 1998-01-30 | 2002-07-26 | 마츠시타 덴끼 산교 가부시키가이샤 | Built-in antenna for radio communication terminals |
| KR20010044821A (en) * | 2001-03-29 | 2001-06-05 | 전중수 | A handiphone with battery combined in antenna |
| US8715533B2 (en) | 2004-12-17 | 2014-05-06 | Asahi R&D Co., Ltd. | Dielectric raw material, antenna device, portable phone and electromagnetic wave shielding body |
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