JPS56165427A - Radio receiving device - Google Patents
Radio receiving deviceInfo
- Publication number
- JPS56165427A JPS56165427A JP6940780A JP6940780A JPS56165427A JP S56165427 A JPS56165427 A JP S56165427A JP 6940780 A JP6940780 A JP 6940780A JP 6940780 A JP6940780 A JP 6940780A JP S56165427 A JPS56165427 A JP S56165427A
- Authority
- JP
- Japan
- Prior art keywords
- amplifiers
- receiving device
- lincompex
- demodulator
- amplified
- 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
- H04B1/62—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 for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
- H04B1/64—Volume compression or expansion arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
PURPOSE:To realize a voice reproduction with a high quality for a receiving device of lincompex radio telephone system, by carrying out the process at and after the IF stage in separation into a voice channel and a control channel. CONSTITUTION:The arrived signal is amplified by an RF amplifier 1 and then converted into an intermediate frequency by a mixer 2 and the 1st local oscillator 8. This converted signal is separated into a voice channel and a control channel through filters 10 and 13 and amplified by IF amplifiers 11 and 14 respectively to be supplied to a demodulator 5. The output of a carrier oscillator 9 is injected to the other terminal of the demodulator, and the outputs of the amplifiers 11 and 14 are demodulated to the AF band. The signals of both amplifiers are synthesized at a lincompex demodulating part to reproduce an aural output.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6940780A JPS56165427A (en) | 1980-05-23 | 1980-05-23 | Radio receiving device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6940780A JPS56165427A (en) | 1980-05-23 | 1980-05-23 | Radio receiving device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56165427A true JPS56165427A (en) | 1981-12-19 |
Family
ID=13401711
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6940780A Pending JPS56165427A (en) | 1980-05-23 | 1980-05-23 | Radio receiving device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56165427A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4912708A (en) * | 1972-05-15 | 1974-02-04 | ||
JPS4948217A (en) * | 1972-09-13 | 1974-05-10 | ||
JPS5138802A (en) * | 1974-09-27 | 1976-03-31 | Juseidaijin | RINKONPETSUKUSURIKUJOIDOMUSENDENWAHOSHIKI |
-
1980
- 1980-05-23 JP JP6940780A patent/JPS56165427A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4912708A (en) * | 1972-05-15 | 1974-02-04 | ||
JPS4948217A (en) * | 1972-09-13 | 1974-05-10 | ||
JPS5138802A (en) * | 1974-09-27 | 1976-03-31 | Juseidaijin | RINKONPETSUKUSURIKUJOIDOMUSENDENWAHOSHIKI |
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