JPS5718139A - In-band signal detecting device - Google Patents
In-band signal detecting deviceInfo
- Publication number
- JPS5718139A JPS5718139A JP9347180A JP9347180A JPS5718139A JP S5718139 A JPS5718139 A JP S5718139A JP 9347180 A JP9347180 A JP 9347180A JP 9347180 A JP9347180 A JP 9347180A JP S5718139 A JPS5718139 A JP S5718139A
- Authority
- JP
- Japan
- Prior art keywords
- band
- signal
- case
- pass filter
- amplitude
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Circuits Of Receivers In General (AREA)
- Filters And Equalizers (AREA)
Abstract
PURPOSE:To decrease a detection error of an out-band signal, by providing an amplitude limiter on the prestage of a band-pass filter. CONSTITUTION:An in-band signal which has been applled to an input terminal 1 is inputted to a band-pass filter 2 by an amplitude limiter 5, as it is in case when it is smaller than its amplitude limiting value A, and by being limited by this limiting value in case when it is larger. A signal which has passed through the band-pass filter 2 is detected as an insignificant signal in case when it is smaller than a threshold level B of an amplitude detector 3, and as a significant signal in case when it is larger. Accordingly, since a frequency characteristic of a maximum detection sensitivity becomes sharp, a detection error is extremely decreased.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9347180A JPS5718139A (en) | 1980-07-07 | 1980-07-07 | In-band signal detecting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9347180A JPS5718139A (en) | 1980-07-07 | 1980-07-07 | In-band signal detecting device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5718139A true JPS5718139A (en) | 1982-01-29 |
Family
ID=14083247
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9347180A Pending JPS5718139A (en) | 1980-07-07 | 1980-07-07 | In-band signal detecting device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5718139A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61140847A (en) * | 1984-12-14 | 1986-06-27 | Jeol Ltd | Electron spin resonance device |
US5314756A (en) * | 1991-11-27 | 1994-05-24 | Hitachi Metals, Ltd. | Permanent magnet of rare-earth-element/transition-metal system having improved corrosion resistance and manufacturing method thereof |
US5465047A (en) * | 1991-12-06 | 1995-11-07 | Nikkiso Co., Ltd. | Electron spin resonator having variable resonance frequency and error detecting automatic frequency control |
-
1980
- 1980-07-07 JP JP9347180A patent/JPS5718139A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61140847A (en) * | 1984-12-14 | 1986-06-27 | Jeol Ltd | Electron spin resonance device |
JPH0527832B2 (en) * | 1984-12-14 | 1993-04-22 | Nippon Electron Optics Lab | |
US5314756A (en) * | 1991-11-27 | 1994-05-24 | Hitachi Metals, Ltd. | Permanent magnet of rare-earth-element/transition-metal system having improved corrosion resistance and manufacturing method thereof |
US5465047A (en) * | 1991-12-06 | 1995-11-07 | Nikkiso Co., Ltd. | Electron spin resonator having variable resonance frequency and error detecting automatic frequency control |
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