JPS5791457A - Frequency analyzer - Google Patents
Frequency analyzerInfo
- Publication number
- JPS5791457A JPS5791457A JP16890780A JP16890780A JPS5791457A JP S5791457 A JPS5791457 A JP S5791457A JP 16890780 A JP16890780 A JP 16890780A JP 16890780 A JP16890780 A JP 16890780A JP S5791457 A JPS5791457 A JP S5791457A
- Authority
- JP
- Japan
- Prior art keywords
- detectors
- plural
- amplifiers
- detected
- signals
- 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
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/16—Spectrum analysis; Fourier analysis
Landscapes
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
PURPOSE:To detect signals at low error rates both in the case of only one signal and when >=2 signals are inputted simultaneously and perform accurate frequency analysis by setting the thershold level of threshold detectors low through plural detectors. CONSTITUTION:The input signal converted to a common intermediate frequency signal in a frequency conversion circuit 30 is applied to amplitude limiting amplifiers 6a- and plural detectors 10a- simultaneously. The outputs from the amplifiers 6a are detected with threshold detectors 8a- via narrow band BPFs 7a-, and the frequency of the input signal is analyzed by a discrimination circuit 9. On the other hand, the plural detectors 10- generate detection outputs and set the threshold levels of the detectors 8a- low only when plural waves are detected. Thereby, each of the plural waves amplitude limited collectively with the amplifiers 6a- is surely detected with the amplifiers 8a-. Hence, the signals are detected with low error rates both in the case of only one signal and when >=2 signals are inputted simultaneously, whereby the accurate frequency analysis is accomplished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16890780A JPS5791457A (en) | 1980-11-27 | 1980-11-27 | Frequency analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16890780A JPS5791457A (en) | 1980-11-27 | 1980-11-27 | Frequency analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5791457A true JPS5791457A (en) | 1982-06-07 |
Family
ID=15876769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16890780A Pending JPS5791457A (en) | 1980-11-27 | 1980-11-27 | Frequency analyzer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5791457A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2530032A1 (en) * | 1982-07-06 | 1984-01-13 | Gen Electric | FREQUENCY ANALYZER |
| RU2739941C1 (en) * | 2019-12-18 | 2020-12-30 | Федеральное государственное казенное военное образовательное учреждение высшего образования "Военный учебно-научный центр Военно-воздушных сил "Военно-воздушная академия имени профессора Н.Е. Жуковского и Ю.А. Гагарина" (г. Воронеж) Министерства обороны Российской Федерации | Device for measuring frequency of radio signals |
-
1980
- 1980-11-27 JP JP16890780A patent/JPS5791457A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2530032A1 (en) * | 1982-07-06 | 1984-01-13 | Gen Electric | FREQUENCY ANALYZER |
| RU2739941C1 (en) * | 2019-12-18 | 2020-12-30 | Федеральное государственное казенное военное образовательное учреждение высшего образования "Военный учебно-научный центр Военно-воздушных сил "Военно-воздушная академия имени профессора Н.Е. Жуковского и Ю.А. Гагарина" (г. Воронеж) Министерства обороны Российской Федерации | Device for measuring frequency of radio signals |
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