JPS5530242A - Fm receiver - Google Patents
Fm receiverInfo
- Publication number
- JPS5530242A JPS5530242A JP10350278A JP10350278A JPS5530242A JP S5530242 A JPS5530242 A JP S5530242A JP 10350278 A JP10350278 A JP 10350278A JP 10350278 A JP10350278 A JP 10350278A JP S5530242 A JPS5530242 A JP S5530242A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- supplied
- demodulated
- intermediate frequency
- 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
Abstract
PURPOSE: To obtain a demodulated signal with distortion canceled by providing two FM modulator circuits differing mutually in characteristics and then by correcting the modulated signal of the main demodulator circuit by that of the sub-modulator circuit.
CONSTITUTION: An intermediate frequency signal from intermediate frequency amplifier 2 is supplied to FM demodulator circuit 3 and demodulated signal E1 is also supplied to adder circuit 4. An intermediate frequency signal from amplifier 2 is supplied to FM demodulator circuit 5, whose demodulated signal E2 is supplied to circuit 4 via correction circuit 6 for polarity and level. The output of circuit 4 is supplied to addition-output stereophonic demodulator circuit 7, where right and left stereophonic signals are demodulated and extracted from output terminals 5L and 5R. Circuit 6 selects the level and polarity of signal E2 to cancel ternary distortion α3cos3ωt in signal E1 by signal E2. Difference frequency ΔF is changed and fixed by circuit 5 to cancel secondary distortion α2cos2ωt in signal E1 by signal E2.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10350278A JPS5530242A (en) | 1978-08-25 | 1978-08-25 | Fm receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10350278A JPS5530242A (en) | 1978-08-25 | 1978-08-25 | Fm receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5530242A true JPS5530242A (en) | 1980-03-04 |
Family
ID=14355746
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10350278A Pending JPS5530242A (en) | 1978-08-25 | 1978-08-25 | Fm receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5530242A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56156028A (en) * | 1980-05-06 | 1981-12-02 | Fujitsu Ltd | Carrier detecting circuit |
US4878251A (en) * | 1985-04-29 | 1989-10-31 | Plessey Overseas Limited | Interference signal suppressor for a radio receiver |
-
1978
- 1978-08-25 JP JP10350278A patent/JPS5530242A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56156028A (en) * | 1980-05-06 | 1981-12-02 | Fujitsu Ltd | Carrier detecting circuit |
JPS6234184B2 (en) * | 1980-05-06 | 1987-07-24 | Fujitsu Ltd | |
US4878251A (en) * | 1985-04-29 | 1989-10-31 | Plessey Overseas Limited | Interference signal suppressor for a radio receiver |
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