JPS5538737A - Dispersive radio transmission device - Google Patents

Dispersive radio transmission device

Info

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
Application number
JP11124778A
Other languages
Japanese (ja)
Other versions
JPS5759966B2 (en
Inventor
Katsumi Ushiyama
Takao Kiogawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kokusai Electric Corp
Original Assignee
Kokusai Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kokusai Electric Corp filed Critical Kokusai Electric Corp
Priority to JP11124778A priority Critical patent/JPS5538737A/en
Publication of JPS5538737A publication Critical patent/JPS5538737A/en
Publication of JPS5759966B2 publication Critical patent/JPS5759966B2/ja
Granted legal-status Critical Current

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)
  • Radio Transmission System (AREA)
  • Transmitters (AREA)
  • Mobile Radio Communication Systems (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.
JP11124778A 1978-09-12 1978-09-12 Dispersive radio transmission device Granted JPS5538737A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62188835U (en) * 1987-04-23 1987-12-01

Cited By (1)

* Cited by examiner, † Cited by third party
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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