JPH03113503U - - Google Patents
Info
- Publication number
- JPH03113503U JPH03113503U JP2168590U JP2168590U JPH03113503U JP H03113503 U JPH03113503 U JP H03113503U JP 2168590 U JP2168590 U JP 2168590U JP 2168590 U JP2168590 U JP 2168590U JP H03113503 U JPH03113503 U JP H03113503U
- Authority
- JP
- Japan
- Prior art keywords
- filter section
- dielectric
- resonator
- capacitor
- pass filter
- 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
- 239000003990 capacitor Substances 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 1
Description
第１図は本考案に係る誘電体フイルタの一実施
例を示す斜視図、第２図はその平面図、第３図Ａ
は誘電体共振器の斜視図、Ｂはその断面図、第４
図は誘電体フイルタの等価回路図、第５図はフイ
ルタ特性線図である。第６図は本考案の他の実施
例を示す平面図、第７図は誘電体フイルタの他の
等価回路図、第８図は誘電体フイルタの他の実施
例を示す斜視図、第９図は誘電体フイルタの更に
他の実施例を示す斜視図である。第１０図は誘電
体フイルタを用いたアンテナ共用器の一例を示す
斜視図である。第１１図Ａは従来のフイルタの一
例を示す説明図、Ｂはその等価回路図である。
２０…誘電体共振器、２２…誘電体ブロツク、
２４…共振子穴、２６…結合阻止穴、３６…コン
デンサ、３８…コイル、４０…帯域阻止フイルタ
部、４２…金属ベース、４４…誘電体基板、４６
…表面電極、４８…コイル、５０…端子、５４…
低域通過フイルタ部。
FIG. 1 is a perspective view showing one embodiment of a dielectric filter according to the present invention, FIG. 2 is a plan view thereof, and FIG. 3A
is a perspective view of the dielectric resonator, B is its cross-sectional view, and
The figure is an equivalent circuit diagram of a dielectric filter, and FIG. 5 is a filter characteristic diagram. FIG. 6 is a plan view showing another embodiment of the present invention, FIG. 7 is another equivalent circuit diagram of the dielectric filter, FIG. 8 is a perspective view showing another embodiment of the dielectric filter, and FIG. 9 FIG. 3 is a perspective view showing still another embodiment of the dielectric filter. FIG. 10 is a perspective view showing an example of an antenna duplexer using a dielectric filter. FIG. 11A is an explanatory diagram showing an example of a conventional filter, and FIG. 11B is an equivalent circuit diagram thereof. 20...Dielectric resonator, 22...Dielectric block,
24... Resonator hole, 26... Coupling blocking hole, 36... Capacitor, 38... Coil, 40... Band rejection filter section, 42... Metal base, 44... Dielectric substrate, 46
...Surface electrode, 48...Coil, 50...Terminal, 54...
Low pass filter section.
Claims (1)
と、その間に位置し両開口端で短絡した結合阻止
穴とを並設した多段同軸誘電体共振器を用い、そ
の共振子穴開放端にコンデンサを接続すると共に
各コンデンサ間をインダクタンス素子で結合して
帯域阻止フイルタ部を構成し、金属ベース上に前
記誘電体共振器を横置きすると共に低域通過フイ
ルタ部を有する基板を設置し、両フイルタ部を接
続して一体化した誘電体フイルタ。 ２ 低域通過フイルタ部は誘電体基板に設けた複
数の表面電極と裏面アース電極とによる平板構造
のコンデンサと、表面電極間を接続するインダク
タンス素子とからなる請求項１記載のフイルタ。 ３ 低域通過フイルタ部が帯域阻止フイルタ部の
出力側又は入力側に設けられている請求項１又は
２記載のフイルタ。 ４ 低域通過フイルタ部が帯域阻止フイルタ部の
入力側と出力側の両方に設けられている請求項１
又は２記載のフイルタ。[Claims for Utility Model Registration] 1. Using a multistage coaxial dielectric resonator in which a plurality of resonator holes and a coupling prevention hole located between them and short-circuited at both open ends are arranged in parallel in a rectangular parallelepiped dielectric block, A capacitor is connected to the open end of the resonator hole, and each capacitor is coupled with an inductance element to form a band rejection filter section.The dielectric resonator is placed horizontally on a metal base, and a low pass filter section is constructed. A dielectric filter that is integrated by installing a substrate with the same and connecting both filter parts. 2. The filter according to claim 1, wherein the low-pass filter section comprises a capacitor having a flat plate structure formed of a plurality of front surface electrodes and a back surface ground electrode provided on a dielectric substrate, and an inductance element connecting the surface electrodes. 3. The filter according to claim 1 or 2, wherein the low pass filter section is provided on the output side or the input side of the band rejection filter section. 4. Claim 1, wherein the low-pass filter section is provided on both the input side and the output side of the band rejection filter section.
Or the filter according to 2.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2168590U JPH03113503U (en) | 1990-03-03 | 1990-03-03 | |
| CA002037262A CA2037262A1 (en) | 1990-03-02 | 1991-02-27 | Dielectric resonator and a filter using same |
| US07/662,199 US5208565A (en) | 1990-03-02 | 1991-02-28 | Dielectric filer having a decoupling aperture between coaxial resonators |
| EP91301703A EP0444948B1 (en) | 1990-03-02 | 1991-03-01 | Dielectric resonator and a filter using same |
| DE69128803T DE69128803T2 (en) | 1990-03-02 | 1991-03-01 | Dielectric resonator and filter with such a resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2168590U JPH03113503U (en) | 1990-03-03 | 1990-03-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03113503U true JPH03113503U (en) | 1991-11-20 |
Family
ID=31524719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2168590U Pending JPH03113503U (en) | 1990-03-02 | 1990-03-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03113503U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63311801A (en) * | 1987-06-13 | 1988-12-20 | Murata Mfg Co Ltd | Dielectric filter device |
| JPH01103001A (en) * | 1987-10-15 | 1989-04-20 | Murata Mfg Co Ltd | Dielectric filter |
| JPH0255402A (en) * | 1988-08-20 | 1990-02-23 | Toko Inc | Dielectric filter |
-
1990
- 1990-03-03 JP JP2168590U patent/JPH03113503U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63311801A (en) * | 1987-06-13 | 1988-12-20 | Murata Mfg Co Ltd | Dielectric filter device |
| JPH01103001A (en) * | 1987-10-15 | 1989-04-20 | Murata Mfg Co Ltd | Dielectric filter |
| JPH0255402A (en) * | 1988-08-20 | 1990-02-23 | Toko Inc | Dielectric filter |
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