JPS56110347A - Am receiver - Google Patents
Am receiverInfo
- Publication number
- JPS56110347A JPS56110347A JP1270980A JP1270980A JPS56110347A JP S56110347 A JPS56110347 A JP S56110347A JP 1270980 A JP1270980 A JP 1270980A JP 1270980 A JP1270980 A JP 1270980A JP S56110347 A JPS56110347 A JP S56110347A
- Authority
- JP
- Japan
- Prior art keywords
- disturbing
- frequency
- disturbing frequency
- beat component
- diode
- 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
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Noise Elimination (AREA)
Abstract
PURPOSE:To ensure an automatic exclusion of the beat component due to the disturbing frequency in accordance with the amount of the beat component, by detecting the signals having the levels in a prescribed range including the beat component due to the disturbing frequency and then filtering the disturbing frequency in accordance with the output of detection. CONSTITUTION:In case the station that receives an effect of the disturbing frequency of the carrier wave of the adjacent station is received, the level signals within a prescribed range including the beat component due to the disturbing frequency are extracted through the band pass filter 9. The extracted signal is amplified by the amplifier 10 and receives a wave detection through the wave detection circuit 11 to be applied to the transistor 13 and the doide 14. Then the current flowing to the transistor 13 and the diode 15 varies by the current flowing to the diode 14. In other words, the resistance value of the diode 15 varies according to the detected signal level of the disturbance frequency. As a result, the filtering quantity of the notch filter 20 that filters the disturbing filter varies in accordance with the signal level of the disturbing frequency.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1270980A JPS56110347A (en) | 1980-02-05 | 1980-02-05 | Am receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1270980A JPS56110347A (en) | 1980-02-05 | 1980-02-05 | Am receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56110347A true JPS56110347A (en) | 1981-09-01 |
Family
ID=11812934
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1270980A Pending JPS56110347A (en) | 1980-02-05 | 1980-02-05 | Am receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56110347A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5756046U (en) * | 1980-09-17 | 1982-04-01 | ||
JPS6181237U (en) * | 1984-10-31 | 1986-05-29 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5514383B2 (en) * | 1978-03-30 | 1980-04-16 |
-
1980
- 1980-02-05 JP JP1270980A patent/JPS56110347A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5514383B2 (en) * | 1978-03-30 | 1980-04-16 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5756046U (en) * | 1980-09-17 | 1982-04-01 | ||
JPS6181237U (en) * | 1984-10-31 | 1986-05-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1525904A (en) | Automatic noise limiter | |
JPS56110347A (en) | Am receiver | |
JPS56140779A (en) | Detector of signal defect | |
JPS51145256A (en) | Signal detecting circuit | |
JPS57170617A (en) | Receiver | |
JPS57183105A (en) | Fm signal demodulation system | |
JPS56143544A (en) | Error signal detecting system | |
JPS57162541A (en) | Optical pulse receiver | |
JPS56106158A (en) | Speedometer | |
JPS5731274A (en) | Detecting circuit of noise band phase | |
JPS57180209A (en) | Fm signal demodulation system | |
JPS5593369A (en) | Detector for control signal | |
JPS5772451A (en) | Frequency detection system | |
JPS5718139A (en) | In-band signal detecting device | |
JPS6486035A (en) | Wide band measuring amplifier for material testing machine | |
JPS55156416A (en) | Meter circuit for indicating intensity of received electric field | |
JPS56169942A (en) | Beat signal detector | |
JPS57174956A (en) | Am stereo receiver | |
JPS5787243A (en) | Signal detecting circuit | |
JPS6471365A (en) | Noise detecting method for digital radio equipment | |
JPS54157017A (en) | Fm signal receiving circuit | |
JPS56100381A (en) | Human body detector of electric field type | |
JPS57198511A (en) | Detecting method for dropout | |
JPS57188163A (en) | Signal discriminator | |
JPS54157018A (en) | Fm receiver |