JPS62269403A - Auxiliary antenna - Google Patents
Auxiliary antennaInfo
- Publication number
- JPS62269403A JPS62269403A JP11229186A JP11229186A JPS62269403A JP S62269403 A JPS62269403 A JP S62269403A JP 11229186 A JP11229186 A JP 11229186A JP 11229186 A JP11229186 A JP 11229186A JP S62269403 A JPS62269403 A JP S62269403A
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- built
- portable radio
- auxiliary
- auxiliary antenna
- 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.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 6
- 239000004020 conductor Substances 0.000 claims abstract description 6
- 230000035945 sensitivity Effects 0.000 abstract description 7
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 7
- 230000010355 oscillation Effects 0.000 abstract description 5
- 230000005855 radiation Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野１
本発明は１個別選釈呼出受信機（ページャ）等の内蔵ア
ンテナを有する携帯用無線機に取り付けて、当該無線機
の受信感度向上を図るための補助アンテナに関する。[Detailed Description of the Invention] [Industrial Application Field 1] The present invention is attached to a portable radio device having a built-in antenna, such as an individual paging receiver (pager), to improve the reception sensitivity of the radio device. Regarding auxiliary antenna for.
［従来の技術］
この種の補助アンテナは、無線機の携帯性を損なわない
ためにコンパクトな構造であることが望まれる。[Prior Art] This type of auxiliary antenna is desired to have a compact structure so as not to impair the portability of the radio device.
そこで２従来はイヤホン等の部品を補助アンテナとして
併用する手段が用いられていた０例えば、ラジオ受信機
等ではこの手段が一般に適用されている。すなわち、イ
ヤホンの導線部分を外部アンテナとして用い、これを内
蔵アンテナに直接結合してアンテナゲインの向上を図っ
ていた。Therefore, in the past, a method of using components such as earphones as an auxiliary antenna has been used. For example, this method is generally applied to radio receivers and the like. That is, the conductive wire portion of the earphone is used as an external antenna, and this is directly coupled to the built-in antenna to improve the antenna gain.
［解決すべき問題点］
上述した従来の受信感度向上のための手段では、携帯用
無線機を稼動する際、常に補助アンテナを併用する部品
（例えば、イヤホン）を接続する必要があるが、稼動内
容によっては当該部品を不要とする場合があり、そのよ
うな場合にもいちいち接続し、さらには耳などに装着す
ることは煩雑であるという問題点があった。[Problems to be solved] With the conventional means for improving reception sensitivity described above, when operating a portable radio, it is necessary to always connect a component that also uses an auxiliary antenna (for example, an earphone). Depending on the content, the component may be unnecessary, and even in such a case, there is a problem in that it is troublesome to connect each time and furthermore to wear it on the ear.
また、外部アンテナとなる部品を内蔵アンテナに直接結
合する従来のＬ段では、受信機を構成する局部発振回路
からの高調波の輻射が増加するという問題点があった。Furthermore, in the conventional L-stage in which a component serving as an external antenna is directly coupled to the built-in antenna, there is a problem in that harmonic radiation from the local oscillation circuit that constitutes the receiver increases.
本発明は、上述した問題点にかんがみてなされたもので
あり、携帯用無線機の簡便な使用性能を損なうことなく
、かつ、受信機を構成する局部発振回路からの高調波の
輻射が増加することなく受信感度向上を図り得る補助ア
ンテナの提供を目的とする。The present invention has been made in view of the above-mentioned problems, and it is possible to increase harmonic radiation from a local oscillation circuit that constitutes a receiver without impairing the ease of use of a portable radio. The purpose of the present invention is to provide an auxiliary antenna that can improve reception sensitivity without causing problems.
［問題点の解決手段１
］−記目的を達成するために本発明は１本体内に内蔵ア
ンテナを有し、かつ上記本体を収納する収納ケースが装
備された携帯用無線機の補助アンテナであって、少なく
ともインダクタとこのインダクタに並列に接続結合され
たコンデンサとを有する並列同調回路と、この並列同調
回路の一部に接続された所９１の長さを有する導体とを
備え、１−記携帯用無線機における収納ケースに、上記
内蔵アンテナと＊８１的に結合可能な状ｆＥで取りＨけ
た構成としである。[Means for solving problems 1] - In order to achieve the above objects, the present invention provides an auxiliary antenna for a portable radio device, which has a built-in antenna in one main body and is equipped with a storage case for storing the main body. a parallel tuned circuit having at least an inductor and a capacitor coupled in parallel to the inductor; and a conductor having a length of 91 connected to a portion of the parallel tuned circuit; The structure is such that fE can be connected to the built-in antenna in a storage case of a commercial radio.
［実施例］
以下、本発明の一実施例について図面を参照して説明す
る。[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.
第１図（ａ）は本実施例に係る補助アンテナを搭載した
携帯用無線機の側断面図、第１図（ｂ）は回じ〈正面図
、第２図は補助アンテナの構成を拡大して示す斜視図で
ある。FIG. 1(a) is a side sectional view of a portable radio equipped with an auxiliary antenna according to this embodiment, FIG. 1(b) is a front view of the turntable, and FIG. 2 is an enlarged view of the configuration of the auxiliary antenna. FIG.
図面において、ｌは携帯用無線機本体の筐体ケース、２
はこの筐体ケース１内に実装された内蔵アンテナである
。３は筐体ケースｌを収納する収納ケースであり、筐体
ケースｌの周面に装着されて無線機本体を外部からの衝
撃から保護するものである。この収納ケース３は携帯用
無ｍｅに。In the drawings, l is the housing case of the main body of the portable radio device, 2
is a built-in antenna mounted inside this housing case 1. Reference numeral 3 denotes a storage case for storing the housing case l, which is attached to the circumferential surface of the housing case l to protect the main body of the radio from external shocks. This storage case 3 is perfect for carrying.
着脱自在な補助部品として装備されている。なお、図中
４は筐体ケースｌに設けられたクリップホルダである。It is equipped as a removable auxiliary part. Note that 4 in the figure is a clip holder provided in the housing case l.
そして、収納ケース３には、補助アンテナ増付部３ａが
設けてあり、ここに本実施例に係る補助アンテナｌＯが
取り付けられている。The storage case 3 is provided with an auxiliary antenna addition section 3a, to which the auxiliary antenna IO according to the present embodiment is attached.
第２図に示すごとく、補助アンテナ１０は、回路構成用
のプリント板１１．フェライトアンテナ（インダクタ）
１２．コンデンサ１３．一定長さを有する可撓性の導ｍ
（導体）１４で構成されている。すなわち、フェライト
アンテナ１２の両端子がプリント板１１」二の接続点１
１ａ、ｌｌｂでパターンｌｌｃ、ｌｉｄの一端に接続さ
れ、該両パターンの他端にコンデンサ１３の両端を接続
することにより並列同調回路が構成され、さらにフェラ
イトアンテナ１２におけるフェライト１２ａに巻かれた
導線１２ｂの一部に導線１４の一端を接続しである。そ
して、第１図に示すごとく、並列同調回路を構成する部
分が収納ケース３の補助アンテナ取付部３ａ内に収納さ
れ、内蔵アンテナ２と電磁的に結合するようになってい
る。As shown in FIG. 2, the auxiliary antenna 10 includes a printed circuit board 11. Ferrite antenna (inductor)
12. Capacitor 13. Flexible conductor with a certain length
(conductor) 14. That is, both terminals of the ferrite antenna 12 are connected to the connection point 1 of the printed board 11''.
1a and llb are connected to one end of the patterns llc and lid, and a parallel tuned circuit is constructed by connecting both ends of the capacitor 13 to the other ends of the patterns, and a conductive wire 12b wound around the ferrite 12a of the ferrite antenna 12. One end of the conducting wire 14 is connected to a part of the . As shown in FIG. 1, a portion constituting the parallel tuning circuit is housed in the auxiliary antenna mounting portion 3a of the storage case 3, and is electromagnetically coupled to the built-in antenna 2.
第３図は内蔵アンテナ２と補助アンテナｌＯとの間の電
磁的結合状態を示す状態図である。ところで、上述した
内蔵アンテナ２は微小ループアンテナ１００を構成し、
導線１４は、グイボールアンチ＋ｌＯ１を構成し、さら
にフェライトアンテナ１２はループアンテナ１０２を構
成している。FIG. 3 is a state diagram showing the electromagnetic coupling state between the built-in antenna 2 and the auxiliary antenna IO. By the way, the above-mentioned built-in antenna 2 constitutes a micro loop antenna 100,
The conducting wire 14 constitutes a Guibor anti+lO1, and the ferrite antenna 12 constitutes a loop antenna 102.
そして、ダイポールアンテナ１０１に誘起した電圧はル
ープアンテナ１０２により磁束２００を生シサセ、この
磁束２００によりループアンテナ１０２と１００とが磁
束結合する。かくして、ループアンテナ１００（すなわ
ち、内蔵アンテナ２）には、そのアンテナ自体のアンテ
ナゲインにダイポールアンテナｌｏｔによるアンテナゲ
インが付加され１等価的に携帯用無線機の受信感度が向
上する。The voltage induced in the dipole antenna 101 generates a magnetic flux 200 by the loop antenna 102, and the loop antennas 102 and 100 are magnetically coupled by this magnetic flux 200. In this way, the antenna gain of the dipole antenna lot is added to the antenna gain of the loop antenna 100 (that is, the built-in antenna 2), and the reception sensitivity of the portable radio device is equivalently improved.
一方、無線機の局部発振回路における高調波成分等の輻
射については、イヤホンをアンテナとして用いるものと
５！４なり、内蔵アンテナ２自体による輻射エネルギの
みで、補助アンテナ１０による増強効果はない。On the other hand, the radiation of harmonic components and the like in the local oscillation circuit of the wireless device is 5:4 compared to when earphones are used as antennas, and the radiant energy is only from the built-in antenna 2 itself, and there is no enhancement effect from the auxiliary antenna 10.
なお、受信電波の電界が強い場所では、収納ケース３を
無線機本体から取り外せば、それに伴い補助アンテナｌ
Ｏを容易に増り外すことができる。In addition, in places where the electric field of received radio waves is strong, if you remove the storage case 3 from the radio main body, the auxiliary antenna l will be removed accordingly.
O can be easily added or removed.
［発明の効果］
以上説明したように１本発明の補助アンテナは、携帯用
無線機における収納ケースに、当該無線機の内蔵アンテ
ナと電磁的に結合可能な状態で取り付けた構成としたの
で、携帯用無線機の簡便な使用性能を損なうことなく、
かつ、受信機を構成する局部発振回路からの高調波の輻
射が増加することなく、受信感度の向上を図ることがで
きる効果がある。[Effects of the Invention] As explained above, the auxiliary antenna of the present invention is attached to the storage case of a portable radio in such a manner that it can be electromagnetically coupled to the built-in antenna of the radio. without sacrificing the easy-to-use performance of the wireless device.
In addition, there is an effect that reception sensitivity can be improved without increasing harmonic radiation from the local oscillation circuit that constitutes the receiver.
図面は本発明の一実施例を示すものであり、第１図（ａ
）は補助アンテナを搭載した携帯用無線機の側断面図、
第１図（ｂ）は同じく正面図、第２図は補助アンテナの
構成を拡大して示す斜視図、第３図は内蔵アンテナと補
助アンテナとの間の電磁的結合状態を示す状態図である
。
ｌ：携帯用無線機本体の筐体ケース
２：内蔵アンテナ ３：収納ケース３ａ：
補助アンテナ取付部
ｌＯ：補助アンテナ ｌｌｌニブリント１２：
フェライトアンテナ（インダクタ）１３：コンデンサ
１４：導線（導体）The drawings show one embodiment of the present invention, and FIG.
) is a side sectional view of a portable radio equipped with an auxiliary antenna.
FIG. 1(b) is a front view, FIG. 2 is an enlarged perspective view of the configuration of the auxiliary antenna, and FIG. 3 is a state diagram showing the state of electromagnetic coupling between the built-in antenna and the auxiliary antenna. . l: Portable radio body case 2: Built-in antenna 3: Storage case 3a:
Auxiliary antenna mounting part lO: Auxiliary antenna lll Niblint 12:
Ferrite antenna (inductor) 13: Capacitor 14: Leading wire (conductor)
Claims (1)
収納ケースが装備された携帯用無線機の補助アンテナで
あって、少なくともインダクタとこのインダクタに並列
に接続結合されたコンデンサとを有する並列同調回路と
、この並列同調回路の一部に接続された所望の長さを有
する導体とを備え、上記携帯用無線機における収納ケー
スに、上記内蔵アンテナと電磁的に結合可能な状態で取
り付けられたことを特徴とする補助アンテナ。An auxiliary antenna for a portable radio having a built-in antenna in the main body and equipped with a storage case for storing the main body, the parallel tuning having at least an inductor and a capacitor coupled in parallel to the inductor. circuit, and a conductor having a desired length connected to a part of the parallel tuned circuit, and is attached to the storage case of the portable radio in a state in which it can be electromagnetically coupled to the built-in antenna. An auxiliary antenna characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61112291A JP2841358B2 (en) | 1986-05-16 | 1986-05-16 | Auxiliary antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61112291A JP2841358B2 (en) | 1986-05-16 | 1986-05-16 | Auxiliary antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62269403A true JPS62269403A (en) | 1987-11-21 |
| JP2841358B2 JP2841358B2 (en) | 1998-12-24 |
Family
ID=14583014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61112291A Expired - Lifetime JP2841358B2 (en) | 1986-05-16 | 1986-05-16 | Auxiliary antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2841358B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01190033A (en) * | 1988-01-25 | 1989-07-31 | Man Design Kk | Antenna connection method to radio equipment |
| JPH02124604A (en) * | 1988-07-05 | 1990-05-11 | Nec Corp | Portable radio communication equipment |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4770792B2 (en) * | 2007-05-18 | 2011-09-14 | パナソニック電工株式会社 | Antenna device |
| JP4770793B2 (en) * | 2007-05-18 | 2011-09-14 | パナソニック電工株式会社 | Antenna device |
| JP5161485B2 (en) * | 2007-05-18 | 2013-03-13 | パナソニック株式会社 | Antenna device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS445146Y1 (en) * | 1965-04-14 | 1969-02-25 | ||
| JPS54141805U (en) * | 1978-03-24 | 1979-10-02 | ||
| JPS56137509U (en) * | 1980-03-18 | 1981-10-17 |
-
1986
- 1986-05-16 JP JP61112291A patent/JP2841358B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS445146Y1 (en) * | 1965-04-14 | 1969-02-25 | ||
| JPS54141805U (en) * | 1978-03-24 | 1979-10-02 | ||
| JPS56137509U (en) * | 1980-03-18 | 1981-10-17 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01190033A (en) * | 1988-01-25 | 1989-07-31 | Man Design Kk | Antenna connection method to radio equipment |
| JPH02124604A (en) * | 1988-07-05 | 1990-05-11 | Nec Corp | Portable radio communication equipment |
| JPH0812970B2 (en) * | 1988-07-05 | 1996-02-07 | 日本電気株式会社 | Portable wireless communication device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2841358B2 (en) | 1998-12-24 |
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