JPS5538737A - Dispersive radio transmission device - Google Patents
Dispersive radio transmission deviceInfo
- Publication number
- JPS5538737A JPS5538737A JP11124778A JP11124778A JPS5538737A JP S5538737 A JPS5538737 A JP S5538737A JP 11124778 A JP11124778 A JP 11124778A JP 11124778 A JP11124778 A JP 11124778A JP S5538737 A JPS5538737 A JP S5538737A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- transmitter
- dispersive
- signal
- divider
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C1/00—Amplitude modulation
- H03C1/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/12—Arrangements for observation, testing or troubleshooting
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/67—Common-wave systems, i.e. using separate transmitters operating on substantially the same frequency
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/76—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
- H04H60/81—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself
- H04H60/93—Wired transmission systems
- H04H60/95—Wired transmission systems for local area
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Abstract
PURPOSE:To facilitate elimination of the beat frequency component caused at the reception side and thus to prevent the loss of the signal component by controlling the transmission frequency of each dispersive transmitter via the reference frequency of the main unit. CONSTITUTION:Frequency fO of crystal oscillator 1 of main unit 7 is divided via divider 2 down to low frequency (reference frequency) fS outside the sound formation band and then compounded with aural signal fi through compounding unit 4 to be transmitted to dispersive transmitter 20 via cable 8. Transmitter 20 contains the loop circuit comprising crystal oscillator 13 featuring frequency f' nearly equal to fO, divider 14 of output frequency f'S BPF15, phase discriminator 11 which delivers the DC component proportional to the phase difference between frequencies fS and f'S, and variable capacitor 12 which controls frequency f' by the output of discriminator 11. Then frequency f' is applied to modulator 11 with the phase modulation given with signal fi of BPF17 and then transmitted through antenna 21.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11124778A JPS5538737A (en) | 1978-09-12 | 1978-09-12 | Dispersive radio transmission device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11124778A JPS5538737A (en) | 1978-09-12 | 1978-09-12 | Dispersive radio transmission device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5538737A true JPS5538737A (en) | 1980-03-18 |
JPS5759966B2 JPS5759966B2 (en) | 1982-12-17 |
Family
ID=14556316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11124778A Granted JPS5538737A (en) | 1978-09-12 | 1978-09-12 | Dispersive radio transmission device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5538737A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62188835U (en) * | 1987-04-23 | 1987-12-01 |
-
1978
- 1978-09-12 JP JP11124778A patent/JPS5538737A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62188835U (en) * | 1987-04-23 | 1987-12-01 |
Also Published As
Publication number | Publication date |
---|---|
JPS5759966B2 (en) | 1982-12-17 |
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