JPH0344912U - - Google Patents
Info
- Publication number
- JPH0344912U JPH0344912U JP10595389U JP10595389U JPH0344912U JP H0344912 U JPH0344912 U JP H0344912U JP 10595389 U JP10595389 U JP 10595389U JP 10595389 U JP10595389 U JP 10595389U JP H0344912 U JPH0344912 U JP H0344912U
- Authority
- JP
- Japan
- Prior art keywords
- acoustic wave
- amplifier
- surface acoustic
- feedback circuit
- wave oscillator
- 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
- 238000010897 surface acoustic wave method Methods 0.000 claims description 7
- 239000000284 extract Substances 0.000 claims 1
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 208000019300 CLIPPERS Diseases 0.000 description 1
- 208000021930 chronic lymphocytic inflammation with pontine perivascular enhancement responsive to steroids Diseases 0.000 description 1
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
- Control Of Amplification And Gain Control (AREA)
Description
第１図はこの考案の一実施例による弾性表面波
発振器の構成をあらわした図、第２図は従来の弾
性表面波発振器の構成をあらわした図である。１
……弾性表面波共振器、２……高周波移相器、３
……利得可変型増幅器、４……高周波電力分配器
、５……高周波緩衝増幅器、６……この弾性表面
波発振器の信号出力端子、７……高周波電力分配
器、８……振幅検波器、９……電圧減算器、１０
……直流電圧源、１１……入力が正電圧の場合は
そのまま出力し、入力が負電圧の場合は０Ｖを出
力する負電圧クリツパ、１２……低域通過フイル
タ、１３……直流増幅器、１４……高周波増幅器
である。なお、図中、同一符号は同一、又は相当
部分を示す。
FIG. 1 is a diagram showing the configuration of a surface acoustic wave oscillator according to an embodiment of this invention, and FIG. 2 is a diagram showing the configuration of a conventional surface acoustic wave oscillator. 1
...Surface acoustic wave resonator, 2...High frequency phase shifter, 3
... variable gain amplifier, 4 ... high frequency power divider, 5 ... high frequency buffer amplifier, 6 ... signal output terminal of this surface acoustic wave oscillator, 7 ... high frequency power divider, 8 ... amplitude detector, 9...Voltage subtractor, 10
...DC voltage source, 11...Negative voltage clipper that outputs as is when the input is a positive voltage, and outputs 0V when the input is a negative voltage, 12...Low pass filter, 13...DC amplifier, 14 ...It is a high frequency amplifier. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
路を構成し、弾性表面波共振器と共振周波数で、
この帰還回路を発振させ、この帰還回路の発振信
号の一部を取り出し出力信号とする弾性表面波発
振器において、増幅器を利得可変型増幅器とし、
その利得可変型増幅器の利得を、帰還回路のレベ
ルで制御することを特徴とする弾性表面波発振器
。 A feedback circuit is composed of a surface acoustic wave resonator, an amplifier, and a phase shifter.
In a surface acoustic wave oscillator that causes this feedback circuit to oscillate and extracts a part of the oscillation signal of this feedback circuit as an output signal, the amplifier is a variable gain amplifier,
A surface acoustic wave oscillator characterized in that the gain of the variable gain amplifier is controlled at the level of a feedback circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10595389U JPH0344912U (en) | 1989-09-08 | 1989-09-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10595389U JPH0344912U (en) | 1989-09-08 | 1989-09-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0344912U true JPH0344912U (en) | 1991-04-25 |
Family
ID=31654704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10595389U Pending JPH0344912U (en) | 1989-09-08 | 1989-09-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0344912U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012135429A (en) * | 2010-12-27 | 2012-07-19 | Atsushi Maruyama | Tip-over prevention furniture, and tip-over prevention device |
-
1989
- 1989-09-08 JP JP10595389U patent/JPH0344912U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012135429A (en) * | 2010-12-27 | 2012-07-19 | Atsushi Maruyama | Tip-over prevention furniture, and tip-over prevention device |
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