JPH0420722U - - Google Patents
Info
- Publication number
- JPH0420722U JPH0420722U JP6147690U JP6147690U JPH0420722U JP H0420722 U JPH0420722 U JP H0420722U JP 6147690 U JP6147690 U JP 6147690U JP 6147690 U JP6147690 U JP 6147690U JP H0420722 U JPH0420722 U JP H0420722U
- Authority
- JP
- Japan
- Prior art keywords
- frequency oscillator
- case
- circuit board
- covers
- sectional
- 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
- 239000006096 absorbing agent Substances 0.000 claims description 2
- 239000012777 electrically insulating material Substances 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 6
- 230000010355 oscillation Effects 0.000 description 2
- 238000010897 surface acoustic wave method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Description
第１図は本考案に係る第１の実施例である誘電
体共振子を用いた高周波発振器の縦断面図、第２
図は本考案に係る第１の実施例の変形例である誘
電体共振子を用いた高周波発振器の縦断面図、第
３図は本考案に係る第２の実施例である表面弾性
波共振子を用いた高周波発振器の縦断面図、第４
図は第１の実施例における第１の比較例の高周波
発振器の縦断面図、第５図は第１の実施例におけ
る第２の比較例の高周波発振器の縦断面図、第６
図は第２の実施例における第１の比較例の高周波
発振器の縦断面図、第７図は第２の実施例におけ
る第２の比較例の高周波発振器の縦断面図、第８
図は第１の実施例及びその比較例の各高周波発振
器の発振出力レベルの周波数特性を示すグラフ、
第９図は第２の実施例及びその比較例の各高周波
発振器の発振出力レベルの周波数特性を示すグラ
フ、第１０図は誘電体共振子を用いた従来の高周
波発振器の縦断面図である。
１０……ケース基板、１１，１１ａ，１１ｂ…
…ケースキヤツプ、１２……導電性塗料、２０…
…回路基板、３０……誘電体共振子、４０、７１
，７２……電波吸収体、５０……表面弾性波共振
子、６０……空心のコイル。
FIG. 1 is a vertical cross-sectional view of a high-frequency oscillator using a dielectric resonator, which is the first embodiment of the present invention;
The figure is a longitudinal cross-sectional view of a high frequency oscillator using a dielectric resonator which is a modification of the first embodiment of the present invention, and FIG. 3 is a surface acoustic wave resonator which is a second embodiment of the present invention. Longitudinal cross-sectional view of a high frequency oscillator using
The figures are a vertical cross-sectional view of a high-frequency oscillator of a first comparative example in the first embodiment, FIG. 5 is a vertical cross-sectional view of a high-frequency oscillator of a second comparative example in the first example, and FIG.
The figure is a vertical cross-sectional view of the high-frequency oscillator of the first comparative example in the second embodiment, FIG. 7 is a vertical cross-sectional view of the high-frequency oscillator of the second comparative example in the second embodiment,
The figure is a graph showing the frequency characteristics of the oscillation output level of each high-frequency oscillator of the first example and its comparative example,
FIG. 9 is a graph showing the frequency characteristics of the oscillation output level of each high-frequency oscillator of the second embodiment and its comparative example, and FIG. 10 is a longitudinal cross-sectional view of a conventional high-frequency oscillator using a dielectric resonator. 10...Case board, 11, 11a, 11b...
...Case cap, 12...Conductive paint, 20...
...Circuit board, 30...Dielectric resonator, 40, 71
, 72...Radio wave absorber, 50...Surface acoustic wave resonator, 60...Air-core coil.
Claims (1)
製のケースを有する高周波発振器において、 上記ケースの内面に上記高周波発振子に近接す
るように電波吸収体を備えたことを特徴とする高
周波発振器。 (2) 高周波発振子を備える回路基板を覆う電気
絶縁材料製のケースの外表面に導体層を形成した
ことを特徴とする高周波発振器。[Scope of Claim for Utility Model Registration] (1) A high-frequency oscillator having a metal case that covers a circuit board equipped with a high-frequency oscillator, wherein a radio wave absorber is provided on the inner surface of the case so as to be close to the high-frequency oscillator. A high frequency oscillator characterized by: (2) A high-frequency oscillator characterized in that a conductive layer is formed on the outer surface of a case made of an electrically insulating material that covers a circuit board equipped with a high-frequency oscillator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6147690U JPH0420722U (en) | 1990-06-11 | 1990-06-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6147690U JPH0420722U (en) | 1990-06-11 | 1990-06-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0420722U true JPH0420722U (en) | 1992-02-21 |
Family
ID=31589756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6147690U Pending JPH0420722U (en) | 1990-06-11 | 1990-06-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0420722U (en) |
-
1990
- 1990-06-11 JP JP6147690U patent/JPH0420722U/ja active Pending
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