JPH0447677U - - Google Patents
Info
- Publication number
- JPH0447677U JPH0447677U JP8870290U JP8870290U JPH0447677U JP H0447677 U JPH0447677 U JP H0447677U JP 8870290 U JP8870290 U JP 8870290U JP 8870290 U JP8870290 U JP 8870290U JP H0447677 U JPH0447677 U JP H0447677U
- Authority
- JP
- Japan
- Prior art keywords
- noise signal
- bandwidth
- noise
- circuit
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Radar Systems Or Details Thereof (AREA)
Description
第１図は、本考案の一実施例によるノイズ信号
発生方式を示す図、第２図は帯域通過フイルタ８
ａ〜８ｎの違いによる帯域幅及び雑音出力レベル
の変化を示す図、また、第３，４図は本考案の他
の変形例を示す図、第５図は従来のノイズ信号発
生方式を示す図である。
図において、１０は、周波数変換部、１１は帯
域幅検出制御回路である。なお、図中、同一符号
は同一または相当部分を示す。
FIG. 1 is a diagram showing a noise signal generation method according to an embodiment of the present invention, and FIG. 2 is a diagram showing a band-pass filter 8.
Figures 3 and 4 are diagrams showing other variations of the present invention, and Figure 5 is a diagram showing a conventional noise signal generation method. It is. In the figure, 10 is a frequency conversion section, and 11 is a bandwidth detection control circuit. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
させたノイズの帯域幅を制御する低域通過フイル
タとそのノイズ信号を所要の周波数に周波数変換
するミキサ及び局部発振器と出力ノイズ信号の帯
域幅を検出する検出回路と検出回路からの検出信
号を受信し、可変低域通過フイルタの帯域幅を制
御する制御回路とを備えたことを特徴とするノイ
ズ信号発生方式。 A noise oscillator circuit that generates a noise signal, a low-pass filter that controls the bandwidth of the generated noise, a mixer and local oscillator that converts the noise signal to a desired frequency, and a detector that detects the bandwidth of the output noise signal. 1. A noise signal generation method comprising: a circuit; and a control circuit that receives a detection signal from a detection circuit and controls the bandwidth of a variable low-pass filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8870290U JPH0447677U (en) | 1990-08-24 | 1990-08-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8870290U JPH0447677U (en) | 1990-08-24 | 1990-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0447677U true JPH0447677U (en) | 1992-04-22 |
Family
ID=31822145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8870290U Pending JPH0447677U (en) | 1990-08-24 | 1990-08-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0447677U (en) |
-
1990
- 1990-08-24 JP JP8870290U patent/JPH0447677U/ja active Pending