JPH028212U - - Google Patents
Info
- Publication number
- JPH028212U JPH028212U JP8520688U JP8520688U JPH028212U JP H028212 U JPH028212 U JP H028212U JP 8520688 U JP8520688 U JP 8520688U JP 8520688 U JP8520688 U JP 8520688U JP H028212 U JPH028212 U JP H028212U
- Authority
- JP
- Japan
- Prior art keywords
- resonant circuit
- variable
- control voltage
- piezoelectric material
- capacitance
- 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
- 239000000463 material Substances 0.000 claims description 3
- 239000003989 dielectric material Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
Description
第１図は本考案の一実施例を示すブロツク図、
第２図は第１図の可変容量素子の構成を示す縦断
面図、第３図はその等価回路図、第４図は本考案
の他の実施例を示すブロツク図、第５図は従来の
周波数可変型発振器を示すブロツク図である。
１……トランジスタ、２……可変容量素子、３
……λｇ／４共振器、６……共振回路、１１……
圧電体、１２……誘電体、１３，１４，１５……
第１，２，３の電極。
FIG. 1 is a block diagram showing an embodiment of the present invention.
2 is a vertical cross-sectional view showing the configuration of the variable capacitance element shown in FIG. 1, FIG. 3 is its equivalent circuit diagram, FIG. 4 is a block diagram showing another embodiment of the present invention, and FIG. 5 is a conventional one. FIG. 2 is a block diagram showing a variable frequency oscillator. 1...Transistor, 2...Variable capacitance element, 3
...λg/4 resonator, 6... Resonance circuit, 11...
Piezoelectric material, 12... Dielectric material, 13, 14, 15...
1st, 2nd, and 3rd electrodes.
Claims (1)
子として制御電圧に依り静電容量が変化する可変
容量素子を用いた周波数可変型発振器において、 前記可変容量素子が圧電体と弾力性のある誘電
体と電極との積層体をケースに収納して両端の間
隔を一定に保持した構成であり、圧電体を挾む両
電極に前記制御電圧が印加され、また誘電体を挾
む両電極間の静電容量により前記共振回路の共振
周波数を変えるようになしてあることを特徴とす
る周波数可変型発振器。[Claims for Utility Model Registration] A variable frequency oscillator that uses a resonant circuit as a positive feedback circuit and uses a variable capacitance element whose capacitance changes depending on a control voltage as one element of the resonant circuit, wherein the variable capacitance element is It has a configuration in which a laminate of a piezoelectric material, an elastic dielectric material, and an electrode is housed in a case, and the distance between both ends is maintained constant.The control voltage is applied to both electrodes that sandwich the piezoelectric material, and the dielectric A variable frequency oscillator, characterized in that the resonant frequency of the resonant circuit is changed by capacitance between two electrodes sandwiching the body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8520688U JPH028212U (en) | 1988-06-28 | 1988-06-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8520688U JPH028212U (en) | 1988-06-28 | 1988-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH028212U true JPH028212U (en) | 1990-01-19 |
Family
ID=31309879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8520688U Pending JPH028212U (en) | 1988-06-28 | 1988-06-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH028212U (en) |
-
1988
- 1988-06-28 JP JP8520688U patent/JPH028212U/ja active Pending
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