JPH0195676U - - Google Patents
Info
- Publication number
- JPH0195676U JPH0195676U JP19222787U JP19222787U JPH0195676U JP H0195676 U JPH0195676 U JP H0195676U JP 19222787 U JP19222787 U JP 19222787U JP 19222787 U JP19222787 U JP 19222787U JP H0195676 U JPH0195676 U JP H0195676U
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- signal
- converted
- local
- frequency converter
- 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
- 238000001228 spectrum Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
Description
第１図はこの考案によるスペクトラムアナライ
ザの一例を示すブロツク図、第２図は従来のスペ
クトラムアナライザを示すブロツク図である。
FIG. 1 is a block diagram showing an example of a spectrum analyzer according to this invention, and FIG. 2 is a block diagram showing a conventional spectrum analyzer.
Claims (1)
第１局部発振器よりの局部信号により周波数変換
し、その周波数変換された信号を第２周波数変換
器で第２局部発振器よりの局部信号により周波数
変換して受信するスペクトラムアナライザにおい
て、 可変周波数発振器と、 その可変周波数発振器の出力を上記第２局部発
振器よりの局部信号により周波数変換し、上側波
帯と下側波帯とを選択することができる単側波帯
周波数変換器と、 その単側波帯周波数変換器の出力を上記第１局
部発振器の局部信号でビートダウンして上記被測
定物に対する試験信号を得る周波数変換器とを具
備するスペクトラムアナライザ。[Claims for Utility Model Registration] The output signal from the object to be measured is frequency-converted by a first frequency converter using a local signal from a first local oscillator, and the frequency-converted signal is converted to a second frequency by a second frequency converter. In a spectrum analyzer that converts the frequency using a local signal from a local oscillator and receives it, a variable frequency oscillator and the output of the variable frequency oscillator are converted in frequency using a local signal from the second local oscillator, and the upper sideband and lower sideband are converted. a single sideband frequency converter capable of selecting a frequency band; and a single sideband frequency converter that beats down the output of the single sideband frequency converter with a local signal of the first local oscillator to obtain a test signal for the device under test. A spectrum analyzer equipped with a frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19222787U JPH0195676U (en) | 1987-12-18 | 1987-12-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19222787U JPH0195676U (en) | 1987-12-18 | 1987-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0195676U true JPH0195676U (en) | 1989-06-23 |
Family
ID=31483094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19222787U Pending JPH0195676U (en) | 1987-12-18 | 1987-12-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0195676U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006054390A1 (en) * | 2004-11-18 | 2006-05-26 | Leader Electronics Corp. | Channel detecting device, and tuner testing device having the channel detecting device |
-
1987
- 1987-12-18 JP JP19222787U patent/JPH0195676U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006054390A1 (en) * | 2004-11-18 | 2006-05-26 | Leader Electronics Corp. | Channel detecting device, and tuner testing device having the channel detecting device |
| JP2006145311A (en) * | 2004-11-18 | 2006-06-08 | Leader Electronics Corp | Channel detection device and tuner inspection device equipped with same |
| JP4690019B2 (en) * | 2004-11-18 | 2011-06-01 | リーダー電子株式会社 | Channel detection device and tuner inspection device provided with the same |