JP2007043432A - Surface-mounted antenna - Google Patents

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JP2007043432A
JP2007043432A JP2005224776A JP2005224776A JP2007043432A JP 2007043432 A JP2007043432 A JP 2007043432A JP 2005224776 A JP2005224776 A JP 2005224776A JP 2005224776 A JP2005224776 A JP 2005224776A JP 2007043432 A JP2007043432 A JP 2007043432A
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antenna
dielectric
conductor pattern
hole
pattern
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Eiichiro Hirose
英一郎 広瀬
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Mitsubishi Materials Corp
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Mitsubishi Materials Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a surface-mounted antenna which is easily manufactured, can obtain an excellent radiation characteristic and a wide pattern area, and is adaptable to a plurality of bands. <P>SOLUTION: The surface-mounted antenna is provided with a dielectric base body 3 of which the external form is like an oblong block and on which a through hole 2 having an axis in the longitudinal direction is formed and an outer surface conductive pattern 4 formed on the outer surface of the dielectric base body 3. A dielectric insertion member 8 is inserted into the through hole 2. Further, an insertion conductor pattern 10 is formed on the outer surface of the dielectric insertion member 8. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、携帯型通信機器等に搭載される表面実装型アンテナに関する。   The present invention relates to a surface mount antenna mounted on a portable communication device or the like.

近年、携帯電話等の通信機器の小型化等に伴って、通信機の筐体の外部に取り付けられていたヘリカルアンテナ等の線状アンテナに代えて、筐体内部に収納されたブロック状又はチップ状の表面実装型アンテナが多く採用されるようになってきた。この表面実装型アンテナとしては、例えば特許文献１に、携帯電話等の移動通信用のヘリカルアンテナとして、誘電体基体の内部に空洞を設け、この空洞の内表面に沿って螺旋状に導体を巻回するように形成したものが記載されている。   In recent years, with the downsizing of communication devices such as mobile phones, instead of linear antennas such as helical antennas attached to the outside of the communication device housing, blocks or chips housed inside the housing Many surface-mounted antennas have been adopted. As this surface-mounted antenna, for example, in Patent Document 1, a helical antenna for mobile communication such as a mobile phone is provided with a cavity inside a dielectric substrate, and a conductor is wound spirally along the inner surface of the cavity. What is formed to rotate is described.

特開平８−３１６７２５号公報（段落番号００３０、図３）JP-A-8-316725 (paragraph number 0030, FIG. 3)

上記従来の技術には、以下の課題が残されている。
すなわち、従来の特許文献１に記載の技術では、誘電体基体の空洞における内表面に螺旋状の導体を形成しているが、空洞の内表面に導体のパターニングを高精度に施すことは通常のパターニング技術では難しく、実際に作製することは非常に困難であった。また、従来、積層構造により内部に導体パターンが形成されたチップアンテナも提案されているが、この場合も複数の積層を繰り返す必要があり、製造工程が複雑であり、高コストであった。また、特許文献１に記載の技術では、誘電体基体の内側に導体が形成されているために、効率的な電波の放射特性を得難いと共に、パターン面積も小さくならざる負えないというデメリットがあった。さらに、従来の表面実装型アンテナは、一つのバンドに対応したものであり、帯域の離れた複数のバンドに対応することができなかった。 The following problems remain in the conventional technology.
That is, in the technique described in the conventional patent document 1, a spiral conductor is formed on the inner surface of the cavity of the dielectric substrate. However, it is usual to pattern the conductor on the inner surface of the cavity with high accuracy. It was difficult with the patterning technique, and it was very difficult to actually produce it. Conventionally, a chip antenna in which a conductor pattern is formed in a laminated structure has also been proposed. In this case, however, it is necessary to repeat a plurality of laminated layers, and the manufacturing process is complicated and expensive. Further, the technique described in Patent Document 1 has a demerit that it is difficult to obtain efficient radio wave radiation characteristics and the pattern area is unavoidable because the conductor is formed inside the dielectric substrate. . Furthermore, the conventional surface mount antenna corresponds to one band, and cannot cope with a plurality of bands separated from each other.

本発明は、前述の課題に鑑みてなされたもので、作製が容易であると共に、良好な放射特性と広いパターン面積とを得ることができ、さらには複数のバンドに対応することも可能にする表面実装型アンテナを提供することを目的とする。   The present invention has been made in view of the above-described problems, and can be easily manufactured, can obtain good radiation characteristics and a wide pattern area, and can also handle a plurality of bands. An object is to provide a surface mount antenna.

本発明は、前記課題を解決するために以下の構成を採用した。すなわち、本発明の表面実装型アンテナは、外形が長尺ブロック状であると共に長尺方向に軸線を有する貫通孔が形成された誘電体基体と、前記誘電体基体の外表面に形成された外表面導体パターンと、を備えていることを特徴とする。   The present invention employs the following configuration in order to solve the above problems. That is, the surface-mounted antenna of the present invention includes a dielectric substrate having a long block shape and a through hole having an axis in the longitudinal direction, and an outer surface formed on the outer surface of the dielectric substrate. And a surface conductor pattern.

この表面実装型アンテナでは、貫通孔を有する誘電体基体の外表面に外表面導体パターンが形成されているので、貫通孔の内径に応じた大きさの中空領域が形成され見かけの誘電率（全体の誘電率）が低くなり、周波数特性を高くすることができる。また、長尺ブロック状の誘電体基体の外表面に導体パターンを形成するので、貫通孔の内面に形成する場合に比べて面積的に広く、形成面積を最大限広く設定することができると共に、パターン形成が容易で、特に長い導体パターンの形成が可能で、良好な放射特性を得ることができる。
さらに、中空の貫通孔により表面実装型アンテナ全体の軽量化が可能になると共に、熱容量が低減されることによりハンダ付け、特に自動実装におけるハンダ付けではハンダ溶融の時間短縮が可能になって、スループットを向上させることができる。
上述した中空の貫通孔による軽量化や熱容量の低減効果は小さくなるが、貫通孔内に磁性体や抵抗体等を挿入することで、アンテナ機能以外の機能を有する複合機能型アンテナとすることも可能になる。 In this surface mount antenna, the outer surface conductor pattern is formed on the outer surface of the dielectric substrate having the through hole, so that a hollow region having a size corresponding to the inner diameter of the through hole is formed, and the apparent dielectric constant (overall (Dielectric constant) can be reduced, and the frequency characteristics can be improved. In addition, since the conductor pattern is formed on the outer surface of the long block-shaped dielectric substrate, the area is wider than when formed on the inner surface of the through hole, and the formation area can be set as wide as possible. The pattern can be easily formed, a particularly long conductor pattern can be formed, and good radiation characteristics can be obtained.
Furthermore, the hollow through-holes can reduce the overall weight of the surface-mounted antenna, and the heat capacity can be reduced, so soldering, especially soldering in automatic mounting, can shorten the solder melting time, resulting in throughput. Can be improved.
Although the effect of reducing the weight and heat capacity due to the hollow through-hole described above is reduced, a composite function antenna having a function other than the antenna function can be obtained by inserting a magnetic body, a resistor, or the like into the through-hole. It becomes possible.

また、本発明の表面実装型アンテナは、前記貫通孔に誘電体挿入部材が挿入されていることを特徴とする。すなわち、この表面実装型アンテナでは、貫通孔に誘電体挿入部材が挿入されているので、見かけの誘電率を誘電体挿入部材によって調整可能で、周波数特性を容易に調整することができる。例えば、誘電体基体よりも誘電率が高い材料で形成された誘電体挿入部材を挿入することで、見かけの誘電率が高くなり、周波数特性を下げることができる。また、貫通孔に対する誘電体挿入部材の挿入位置や挿入長を調整することでも、周波数特性を調整することができる。   The surface mount antenna of the present invention is characterized in that a dielectric insertion member is inserted into the through hole. That is, in this surface-mounted antenna, since the dielectric insertion member is inserted into the through hole, the apparent dielectric constant can be adjusted by the dielectric insertion member, and the frequency characteristics can be easily adjusted. For example, by inserting a dielectric insertion member made of a material having a dielectric constant higher than that of the dielectric substrate, the apparent dielectric constant is increased and the frequency characteristics can be lowered. The frequency characteristic can also be adjusted by adjusting the insertion position and insertion length of the dielectric insertion member with respect to the through hole.

また、本発明の表面実装型アンテナは、前記誘電体挿入部材の外表面に挿入導体パターンが形成されていることを特徴とする。すなわち、この表面実装型アンテナでは、誘電体挿入部材の外表面に挿入導体パターンが形成されているので、外表面導体パターンによって得られるアンテナ特性の他に、挿入導体パターンによって得られる別のバンドに対応したアンテナ特性を有することができる。したがって、外表面導体パターンによるアンテナ特性とは異なるバンドに対応した挿入導体パターンによるアンテナ特性を設定することで、２つのバンドに対応したアンテナ特性を得ることができる。   The surface mount antenna of the present invention is characterized in that an insertion conductor pattern is formed on the outer surface of the dielectric insertion member. That is, in this surface mount antenna, since the insertion conductor pattern is formed on the outer surface of the dielectric insertion member, in addition to the antenna characteristics obtained by the outer surface conductor pattern, another band obtained by the insertion conductor pattern can be used. It can have corresponding antenna characteristics. Therefore, the antenna characteristics corresponding to the two bands can be obtained by setting the antenna characteristics based on the insertion conductor pattern corresponding to the band different from the antenna characteristics based on the outer surface conductor pattern.

さらに、本発明の表面実装型アンテナは、前記外表面導体パターンが、逆Ｆアンテナパターンであり、前記挿入導体パターンが、ヘリカルアンテナパターンであることを特徴とする。すなわち、この表面実装型アンテナでは、逆Ｆアンテナパターンの外表面導体パターンとヘリカルアンテナパターンの挿入導体パターンとで、それぞれのパターン特有の放射特性等を別々に得ることができる。   Furthermore, the surface mount antenna of the present invention is characterized in that the outer surface conductor pattern is an inverted F antenna pattern and the insertion conductor pattern is a helical antenna pattern. That is, in this surface mount antenna, radiation characteristics peculiar to each pattern can be obtained separately for the outer surface conductor pattern of the inverted F antenna pattern and the insertion conductor pattern of the helical antenna pattern.

本発明によれば、以下の効果を奏する。
すなわち、本発明に係る表面実装型アンテナによれば、外形が長尺ブロック状であると共に長尺方向に軸線を有する貫通孔が形成された誘電体基体と、誘電体基体の外表面に形成された外表面導体パターンと、を備えているので、貫通孔の内径に応じて見かけの誘電率が低くなり、周波数特性を高くすることができるだけでなく、容易にかつ広面積に外表面導体パターンを形成することができる。したがって、周波数特性を貫通孔の内径で設定可能であると共に、製造コストが低く、良好な放射特性を得ることができる。さらには、貫通孔に誘電体挿入部材を挿入することで、周波数特性を大きく変更できると共に、別のアンテナ特性を持たせることも可能になる。 The present invention has the following effects.
That is, according to the surface mount antenna according to the present invention, the outer shape of the dielectric substrate is formed on the outer surface of the dielectric substrate, the dielectric substrate having a long block shape and having a through hole having an axis in the longitudinal direction. The outer surface conductor pattern, the apparent dielectric constant is reduced according to the inner diameter of the through hole, the frequency characteristics can be improved, and the outer surface conductor pattern can be easily and widely spread over a large area. Can be formed. Therefore, the frequency characteristic can be set by the inner diameter of the through hole, and the manufacturing cost is low, and a good radiation characteristic can be obtained. Furthermore, by inserting a dielectric insertion member into the through hole, the frequency characteristics can be greatly changed and other antenna characteristics can be provided.

以下、本発明に係る表面実装型アンテナの一実施形態を、図１から図３を参照しながら説明する。   Hereinafter, an embodiment of a surface mount antenna according to the present invention will be described with reference to FIGS. 1 to 3.

本実施形態の表面実装型アンテナ１は、図１から図３に示すように、外形が長尺ブロック状であると共に長尺方向に軸線を有する貫通孔２が形成された誘電体基体３と、誘電体基体３の外表面に形成された外表面導体パターン４と、を備えている。
上記誘電体基体３は、例えばアルミナ等のセラミックスで形成されている。また、上記貫通孔２は、所定の内径で断面円形状に形成されている。 As shown in FIGS. 1 to 3, the surface-mounted antenna 1 of the present embodiment has a dielectric base body 3 in which the outer shape is a long block shape and a through hole 2 having an axis in the longitudinal direction is formed, And an outer surface conductor pattern 4 formed on the outer surface of the dielectric substrate 3.
The dielectric substrate 3 is made of ceramics such as alumina. The through hole 2 is formed in a circular cross section with a predetermined inner diameter.

また、上記外表面導体パターン４は、銅膜等の金属膜をエッチング、めっき、印刷又はレーザ加工等でパターニングしたものであり、逆Ｆアンテナパターンとされている。すなわち、外表面導体パターン４は、誘電体基体３の一側面に形成され下端が逆Ｆアンテナ用給電点となる逆Ｆアンテナ用給電部５と、上面に逆Ｆアンテナ用給電点に基端が接続され長尺方向に延在した直線状パターン６と、逆Ｆアンテナ用給電部５から分岐して下端がグランドに接続される接地点となる分岐部７と、から構成されている。   The outer surface conductor pattern 4 is obtained by patterning a metal film such as a copper film by etching, plating, printing, laser processing, or the like, and is an inverted F antenna pattern. That is, the outer surface conductor pattern 4 is formed on one side surface of the dielectric substrate 3 and has a lower end serving as an inverted F antenna feeding point 5 and a lower end serving as an inverted F antenna feeding point on the upper surface. The linear pattern 6 is connected and extends in the longitudinal direction, and a branching portion 7 that is branched from the reverse F antenna power feeding portion 5 and is a grounding point whose lower end is connected to the ground.

この表面実装型アンテナ１では、貫通孔２を有する誘電体基体３の外表面に外表面導体パターン４が形成されているので、貫通孔２の内径に応じた大きさの中空領域が形成され見かけの誘電率（全体の誘電率）が低くなり、周波数特性を高くすることができる。
また、長尺ブロック状の誘電体基体３の外表面に導体パターンを形成するので、貫通孔２の内面に形成する場合に比べて面積的に広く、形成面積を最大限広く設定することができると共に、パターン形成が容易で、特に長い導体パターンの形成が可能で、良好な放射特性を得ることができる。
さらに、中空の貫通孔２により表面実装型アンテナ１全体の軽量化が可能になると共に、熱容量が低減されることによりハンダ付け、特に自動実装ではハンダ溶融の時間短縮が可能になって、スループットを向上させることができる。 In this surface mount antenna 1, since the outer surface conductor pattern 4 is formed on the outer surface of the dielectric substrate 3 having the through hole 2, a hollow region having a size corresponding to the inner diameter of the through hole 2 is formed. Thus, the dielectric constant (the overall dielectric constant) of the film becomes low, and the frequency characteristics can be improved.
Further, since the conductor pattern is formed on the outer surface of the long block-shaped dielectric substrate 3, the area is larger than that when the conductor pattern is formed on the inner surface of the through-hole 2, and the formation area can be set as wide as possible. At the same time, pattern formation is easy, particularly long conductor patterns can be formed, and good radiation characteristics can be obtained.
Furthermore, the hollow through-hole 2 can reduce the weight of the entire surface-mounted antenna 1, and can reduce the time required for soldering, particularly in automatic mounting, by reducing the heat capacity, thereby reducing the throughput. Can be improved.

上記表面実装型アンテナ１は、貫通孔２が中空状態であるが、全体としての見かけの誘電率を変えて周波数特性を調整するため、貫通孔２に、図１及び図２に示すように、誘電体挿入部材８を挿入しても構わない。この誘電体挿入部材８は、誘電体基体３と異なる誘電率材料であるチタン酸バリウム系等のセラミックス材料で円柱状に形成された挿入基体９と、該挿入基体９の外周面に形成されたヘリカルアンテナパターンの挿入導体パターン１０と、挿入基体９の両端部に設けられ挿入導体パターン１０の両端に接続された金属キャップ１１と、で構成されている。   In the surface mount antenna 1, the through hole 2 is in a hollow state, but in order to adjust the frequency characteristics by changing the apparent dielectric constant as a whole, the through hole 2 has a through hole 2 as shown in FIGS. The dielectric insertion member 8 may be inserted. The dielectric insertion member 8 is formed on an insertion base 9 formed in a columnar shape with a ceramic material such as barium titanate, which is a dielectric material different from that of the dielectric base 3, and formed on the outer peripheral surface of the insertion base 9. An insertion conductor pattern 10 of a helical antenna pattern and metal caps 11 provided at both ends of the insertion base 9 and connected to both ends of the insertion conductor pattern 10 are configured.

この挿入導体パターン１０は、銅膜等の金属膜をレーザ加工、エッチング、めっき、印刷等で螺旋状にパターニングしたものである。このように、外表面導体パターン４によるアンテナが第１のアンテナとすると、挿入導体パターン１０によるアンテナが第２のアンテナとなり、表面実装型アンテナ１が特性の異なる２つのアンテナを備えることになる。   The insertion conductor pattern 10 is a metal film such as a copper film that is spirally patterned by laser processing, etching, plating, printing, or the like. Thus, if the antenna by the outer surface conductor pattern 4 is the first antenna, the antenna by the insertion conductor pattern 10 becomes the second antenna, and the surface mount antenna 1 has two antennas having different characteristics.

上記誘電体挿入部材８の取り付け方法は、まず、誘電体挿入部材８を貫通孔２内に挿入した後、耐熱性接着剤やガラスペースト等の絶縁性接着剤で誘電体基体３に固定する。さらに、誘電体基体３の端面に、貫通孔２の開口端に位置した金属キャップ１１に上端を接続させ下端がヘリカルアンテナ用給電点となるヘリカルアンテナ用給電部１２をパターン形成する。
なお、本実施形態では、外表面導体パターン４による逆Ｆアンテナ特性は、例えば無線ＬＡＮで使用される５ＧＨｚ帯に対応した周波数特性に設定されていると共に、挿入導体パターン１０によるヘリカルアンテナ特性は、２．４ＧＨｚ帯に対応した周波数特性に設定されている。 The dielectric insertion member 8 is attached by first inserting the dielectric insertion member 8 into the through hole 2 and then fixing the dielectric insertion member 8 to the dielectric substrate 3 with an insulating adhesive such as a heat resistant adhesive or glass paste. Further, the end of the dielectric substrate 3 is connected to a metal cap 11 positioned at the opening end of the through hole 2 and an upper end thereof is connected to form a pattern for forming a helical antenna feeding portion 12 whose lower end is a helical antenna feeding point.
In the present embodiment, the inverted F antenna characteristic due to the outer surface conductor pattern 4 is set to a frequency characteristic corresponding to, for example, the 5 GHz band used in the wireless LAN, and the helical antenna characteristic due to the insertion conductor pattern 10 is The frequency characteristics corresponding to the 2.4 GHz band are set.

このように本実施形態では、貫通孔２に誘電体挿入部材８が挿入されているので、見かけの誘電率を誘電体挿入部材８によって調整可能で、周波数特性を容易に調整することができる。すなわち、アルミナの誘電体基体３よりも誘電率が高いチタン酸バリウム系のセラミックス材料で形成された誘電体挿入部材８を挿入することで、見かけの誘電率が高くなり、周波数特性を下げることができる。また、貫通孔２に対する誘電体挿入部材８の挿入位置や挿入長を調整することでも、周波数特性を調整することができる。   Thus, in this embodiment, since the dielectric insertion member 8 is inserted into the through hole 2, the apparent dielectric constant can be adjusted by the dielectric insertion member 8, and the frequency characteristics can be easily adjusted. That is, by inserting the dielectric insertion member 8 formed of a barium titanate-based ceramic material having a dielectric constant higher than that of the alumina dielectric substrate 3, the apparent dielectric constant is increased and the frequency characteristics are lowered. it can. The frequency characteristic can also be adjusted by adjusting the insertion position and insertion length of the dielectric insertion member 8 with respect to the through hole 2.

また、誘電体挿入部材８の外表面に挿入導体パターン１０が形成されているので、外表面導体パターン４によって得られるアンテナ特性の他に、挿入導体パターン１０によって得られる別のバンドに対応したアンテナ特性を有することができ、２つのバンドに対応したアンテナ特性を得ることができる。特に、本実施形態では、逆Ｆアンテナパターンの外表面導体パターン４とヘリカルアンテナパターンの挿入導体パターン１０とで、それぞれのパターン特有の放射特性等を別々に得ることができる。   Further, since the insertion conductor pattern 10 is formed on the outer surface of the dielectric insertion member 8, in addition to the antenna characteristics obtained by the outer surface conductor pattern 4, an antenna corresponding to another band obtained by the insertion conductor pattern 10 Characteristics, and antenna characteristics corresponding to two bands can be obtained. In particular, in the present embodiment, the radiation characteristics peculiar to each pattern can be obtained separately for the outer surface conductor pattern 4 of the inverted F antenna pattern and the insertion conductor pattern 10 of the helical antenna pattern.

このように、外表面導体パターン４と挿入導体パターン１０との異なるパターンや誘電体基体３と挿入基体９との異なる誘電体材料の組み合わせにより、種々の異なるアンテナ特性の組み合わせが可能になる。すなわち、誘電体挿入部材８の挿入により、上述した中空の貫通孔２による軽量化や熱容量の低減効果は小さくなるが、周波数特性の調整やデュアルバンドの対応が可能になる等の種々の利点がある。   As described above, various different antenna characteristics can be combined by different patterns of the outer surface conductor pattern 4 and the inserted conductor pattern 10 and combinations of different dielectric materials of the dielectric substrate 3 and the inserted substrate 9. That is, the insertion of the dielectric insertion member 8 reduces the weight reduction and heat capacity reduction effect due to the hollow through-hole 2 described above, but has various advantages such as the ability to adjust frequency characteristics and support dual bands. is there.

なお、本発明の技術範囲は上記実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲において種々の変更を加えることが可能である。
例えば、上記実施形態の他の例として、図４に示すように、断面矩形状の貫通孔１２が形成された誘電体基体１３を採用しても構わない。 The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, as another example of the above embodiment, as shown in FIG. 4, a dielectric substrate 13 in which a through hole 12 having a rectangular cross section may be employed.

また、上記実装形態では、誘電体挿入部材８の外周面に挿入導体パターン１０を形成して第２のアンテナとしたが、誘電体挿入部材８ではなく、磁性体や抵抗体等で形成されアンテナ機能以外の機能部となる挿入部材を作製しておき、これを誘電体基体内に挿入することでアンテナ部と他の機能部との複合機能型アンテナとしても構わない。
また、上記実施形態では、誘電体基体３と異なる誘電率材料であるチタン酸バリウム系等のセラミックス材料で誘電体挿入部材８の挿入基体９が形成されているが、誘電体基体３と同じ材料で挿入基体を構成しても構わない。 In the above-described mounting form, the insertion conductor pattern 10 is formed on the outer peripheral surface of the dielectric insertion member 8 to form the second antenna. However, the antenna is not formed of the dielectric insertion member 8 but is formed of a magnetic material or a resistor. An insertion member that becomes a functional part other than the function may be prepared, and this may be inserted into a dielectric substrate to form a composite function antenna having an antenna part and another functional part.
In the above embodiment, the insertion base 9 of the dielectric insertion member 8 is formed of a ceramic material such as barium titanate, which is a dielectric constant material different from that of the dielectric base 3, but the same material as the dielectric base 3 is used. The insertion base may be configured as described above.

本発明に係る一実施形態の表面実装型アンテナにおいて、誘電体挿入部材の挿入前の状態を示す斜視図である。1 is a perspective view showing a state before insertion of a dielectric insertion member in a surface-mounted antenna according to an embodiment of the present invention. 本実施形態の表面実装型アンテナにおいて、誘電体挿入部材の挿入後の状態を示す斜視図である。It is a perspective view which shows the state after insertion of a dielectric material insertion member in the surface mount type antenna of this embodiment. 本実施形態の表面実装型アンテナにおいて、誘電体基体を示す斜視図及び正面図である。FIG. 2 is a perspective view and a front view showing a dielectric substrate in the surface mount antenna of the present embodiment. 本実施形態の表面実装型アンテナの他の例において、誘電体基体を示す斜視図及び正面図である。In other examples of the surface mount antenna of this embodiment, they are a perspective view and a front view showing a dielectric substrate.

符号の説明Explanation of symbols

１…表面実装型アンテナ、２、１２…貫通孔、３、１３…誘電体基体、４…外表面導体パターン、８…誘電体挿入部材、１０…挿入導体パターン
DESCRIPTION OF SYMBOLS 1 ... Surface mount type antenna, 2, 12 ... Through-hole 3, 13 ... Dielectric substrate, 4 ... Outer surface conductor pattern, 8 ... Dielectric insertion member, 10 ... Insertion conductor pattern

Claims (4)

外形が長尺ブロック状であると共に長尺方向に軸線を有する貫通孔が形成された誘電体基体と、
前記誘電体基体の外表面に形成された外表面導体パターンと、を備えていることを特徴とする表面実装型アンテナ。 A dielectric substrate having an outer shape in the form of a long block and having a through hole having an axis in the longitudinal direction;
A surface mount antenna comprising: an outer surface conductor pattern formed on an outer surface of the dielectric substrate. 請求項１に記載の表面実装型アンテナにおいて、
前記貫通孔に誘電体挿入部材が挿入されていることを特徴とする表面実装型アンテナ。 The surface mount antenna according to claim 1,
A surface mount antenna, wherein a dielectric insertion member is inserted into the through hole. 請求項２に記載の表面実装型アンテナにおいて、
前記誘電体挿入部材の外表面に挿入導体パターンが形成されていることを特徴とする表面実装型アンテナ。 The surface mount antenna according to claim 2,
A surface mount antenna, wherein an insertion conductor pattern is formed on an outer surface of the dielectric insertion member. 請求項３に記載の表面実装型アンテナにおいて、
前記外表面導体パターンが、逆Ｆアンテナパターンであり、
前記挿入導体パターンが、ヘリカルアンテナパターンであることを特徴とする表面実装型アンテナ。
In the surface mount antenna according to claim 3,
The outer surface conductor pattern is an inverted F antenna pattern;
The surface-mounted antenna, wherein the insertion conductor pattern is a helical antenna pattern.
JP2005224776A 2005-08-02 2005-08-02 Surface-mounted antenna Pending JP2007043432A (en)

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