JPS6451875U - - Google Patents

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Publication number
JPS6451875U
JPS6451875U JP14913687U JP14913687U JPS6451875U JP S6451875 U JPS6451875 U JP S6451875U JP 14913687 U JP14913687 U JP 14913687U JP 14913687 U JP14913687 U JP 14913687U JP S6451875 U JPS6451875 U JP S6451875U
Authority
JP
Japan
Prior art keywords
frequency
signal
local oscillator
shifting
oscillation
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
Application number
JP14913687U
Other languages
Japanese (ja)
Other versions
JPH0634702Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP14913687U priority Critical patent/JPH0634702Y2/en
Publication of JPS6451875U publication Critical patent/JPS6451875U/ja
Application granted granted Critical
Publication of JPH0634702Y2 publication Critical patent/JPH0634702Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Measurement Of Resistance Or Impedance (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

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)

【実用新案登録請求の範囲】 Ａ 周波数掃引される第１局部発振器と、 Ｂ 一定の周波数で発振する第２局部発振器と、 Ｃ 被測定体から出力される応答出力信号と上記
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または差の周波数を
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の周波数を被
測定体で受ける周波数偏移量に対応した量だけ周
波数偏移させる第１周波数偏移手段と、 Ｈ この第１周波数偏移手段で周波数偏移された
信号に必要に応じて被測定体における周波数偏移
量に対応した量の周波数を偏移させることができ
る第２周波数偏移手段と、 Ｉ これら第１、第２周波数偏移手段で周波数偏
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、上記第１周波数偏移手段
で周波数偏移された周波数成分を除去した周波数
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; a first frequency shifting means for shifting the frequency by an amount corresponding to the amount H; a second frequency shifting means capable of shifting the frequency of the first and second frequency shifting means; , a transmission-side frequency mixer that provides a frequency sweep signal from which the frequency component frequency-shifted by the first frequency shift means has been removed to the object under test.
JP14913687U 1987-09-28 1987-09-28 Spectrum analyzer Expired - Lifetime JPH0634702Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14913687U JPH0634702Y2 (en) 1987-09-28 1987-09-28 Spectrum analyzer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14913687U JPH0634702Y2 (en) 1987-09-28 1987-09-28 Spectrum analyzer

Publications (2)

Publication Number Publication Date
JPS6451875U true JPS6451875U (en) 1989-03-30
JPH0634702Y2 JPH0634702Y2 (en) 1994-09-07

Family

ID=31421090

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14913687U Expired - Lifetime JPH0634702Y2 (en) 1987-09-28 1987-09-28 Spectrum analyzer

Country Status (1)

Country Link
JP (1) JPH0634702Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009186323A (en) * 2008-02-06 2009-08-20 Advantest Corp Frequency characteristic measuring device
CN111971914A (en) * 2018-04-08 2020-11-20 上海诺基亚贝尔股份有限公司 Wireless data transmission

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009186323A (en) * 2008-02-06 2009-08-20 Advantest Corp Frequency characteristic measuring device
CN111971914A (en) * 2018-04-08 2020-11-20 上海诺基亚贝尔股份有限公司 Wireless data transmission
CN111971914B (en) * 2018-04-08 2023-02-03 上海诺基亚贝尔股份有限公司 Wireless data transmission

Also Published As

Publication number Publication date
JPH0634702Y2 (en) 1994-09-07

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