JPS6451874U - - Google Patents
Info
- Publication number
- JPS6451874U JPS6451874U JP14913587U JP14913587U JPS6451874U JP S6451874 U JPS6451874 U JP S6451874U JP 14913587 U JP14913587 U JP 14913587U JP 14913587 U JP14913587 U JP 14913587U JP S6451874 U JPS6451874 U JP S6451874U
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- signal
- local oscillator
- oscillation
- 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.)
- Granted
Links
- 230000010355 oscillation Effects 0.000 claims 4
- 238000006243 chemical reaction Methods 0.000 claims 2
- 238000001228 spectrum Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Description
第１図はこの考案の一実施例を示すブロツク図
、第２図は従来の技術を説明するためのブロツク
図である。
FIG. 1 is a block diagram showing one embodiment of this invention, and FIG. 2 is a block diagram for explaining the conventional technology.
Claims (1)
第１局部発振信号とを周波数混合して第１中間周
波信号に変換する第１周波数混合器と、 Ｄ 第１中間周波信号と上記第２局部発振器の発
振信号とを周波数混合して第２中間周波信号に変
換する第２周波数混合器と、 Ｅ 第２中間周波信号の周波数から少なくとも第
２中間周波増幅器の帯域外になる周波数△ｆだけ
離れた周波数を持つ信号を発振する固定発振器と
、 Ｆ この固定発振器の発振信号と上記第２局部発
振器の発振信号を混合して和又は差の周波数を持
つ信号に変換する周波数変換手段と、 Ｇ 上記第１局部発振器の発振信号を上記周波数
△ｆだけ周波数偏移させる周波数偏移手段と、 Ｈ この周波数偏移手段で△ｆだけ周波数偏移さ
れた信号と、上記周波数変換手段の変換出力信号
とを周波数混合し、上記周波数△ｆの成分が除去
された周波数掃引信号を被測定体に与える送出側
周波数混合器と、 を具備して成るスペクトラムアナライザ。[Claims for Utility Model Registration] A. A first local oscillator whose frequency is swept; B. A second local oscillator that oscillates at a constant frequency; C. A response output signal output from the object to be measured and the first local oscillator signal. a first frequency mixer that mixes the frequencies of the first intermediate frequency signal and the oscillation signal of the second local oscillator and converts them into a second intermediate frequency signal; a second frequency mixer; E a fixed oscillator that oscillates a signal having a frequency apart from the frequency of the second intermediate frequency signal by at least a frequency Δf that is outside the band of the second intermediate frequency amplifier; F oscillation of the fixed oscillator; a frequency conversion means for mixing the signal and the oscillation signal of the second local oscillator and converting the signal into a signal having a sum or difference frequency; G a frequency for shifting the oscillation signal of the first local oscillator by the frequency Δf; a shift means, H frequency-mixes the signal whose frequency has been shifted by △f by the frequency shift means and the converted output signal of the frequency conversion means, and generates a frequency sweep signal from which the component of the frequency △f has been removed; A spectrum analyzer that is equipped with a frequency mixer on the sending side that provides the measured object with the following:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14913587U JPH0634701Y2 (en) | 1987-09-28 | 1987-09-28 | Spectrum analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14913587U JPH0634701Y2 (en) | 1987-09-28 | 1987-09-28 | Spectrum analyzer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6451874U true JPS6451874U (en) | 1989-03-30 |
| JPH0634701Y2 JPH0634701Y2 (en) | 1994-09-07 |
Family
ID=31421088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14913587U Expired - Lifetime JPH0634701Y2 (en) | 1987-09-28 | 1987-09-28 | Spectrum analyzer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0634701Y2 (en) |
-
1987
- 1987-09-28 JP JP14913587U patent/JPH0634701Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0634701Y2 (en) | 1994-09-07 |
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