JPS57136824A - Radio transmission device - Google Patents

Radio transmission device

Info

Publication number
JPS57136824A
JPS57136824A JP2359581A JP2359581A JPS57136824A JP S57136824 A JPS57136824 A JP S57136824A JP 2359581 A JP2359581 A JP 2359581A JP 2359581 A JP2359581 A JP 2359581A JP S57136824 A JPS57136824 A JP S57136824A
Authority
JP
Japan
Prior art keywords
frequency
led
output
distributor
high 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.)
Granted
Application number
JP2359581A
Other languages
Japanese (ja)
Other versions
JPS6243609B2 (en
Inventor
Osamu Kasuga
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP2359581A priority Critical patent/JPS57136824A/en
Publication of JPS57136824A publication Critical patent/JPS57136824A/en
Publication of JPS6243609B2 publication Critical patent/JPS6243609B2/ja
Granted legal-status Critical Current

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
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • 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
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B2001/0491—Circuits with frequency synthesizers, frequency converters or modulators

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)
  • Transmitters (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

PURPOSE:To simplify a titled device and to reduce the power consumption and the generation of heat, by supplying two locally oscillated signals having a relation of multiplication with the frequency to two frequency converters connected vertically to each other from a local oscillator. CONSTITUTION:The output of a local oscillator 2 is led to a distributor 13. An output of the distributor 13 is led to the 1st frequency converter 1, and the other output is led to the 2nd frequency converter 6 after it is multiplied by a factor N through a multiplier 14. The input radio signal receives a conversion of frequency through the converters 1 and 6 respectively with the frequency obtained from the oscillator 2 or an N-fold frequency. The high frequency band of the frequency signal passes through a high frequency filter 8 and is simplified by a high frequency amplifier 9 to be transmitted through an antenna 10.
JP2359581A 1981-02-18 1981-02-18 Radio transmission device Granted JPS57136824A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2359581A JPS57136824A (en) 1981-02-18 1981-02-18 Radio transmission device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2359581A JPS57136824A (en) 1981-02-18 1981-02-18 Radio transmission device

Publications (2)

Publication Number Publication Date
JPS57136824A true JPS57136824A (en) 1982-08-24
JPS6243609B2 JPS6243609B2 (en) 1987-09-16

Family

ID=12114938

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2359581A Granted JPS57136824A (en) 1981-02-18 1981-02-18 Radio transmission device

Country Status (1)

Country Link
JP (1) JPS57136824A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013174452A (en) * 2012-02-23 2013-09-05 Anritsu Corp Signal analyzer and frequency extension method using the device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2998517A (en) * 1960-03-11 1961-08-29 Collins Radio Co Variable bandwidth and center frequency receiving scheme
JPS5396715A (en) * 1977-02-04 1978-08-24 Nec Corp Trasmission/receiving system for radio communication
JPS6243609A (en) * 1985-08-22 1987-02-25 Matsushita Electric Ind Co Ltd Optical circuit element

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2998517A (en) * 1960-03-11 1961-08-29 Collins Radio Co Variable bandwidth and center frequency receiving scheme
JPS5396715A (en) * 1977-02-04 1978-08-24 Nec Corp Trasmission/receiving system for radio communication
JPS6243609A (en) * 1985-08-22 1987-02-25 Matsushita Electric Ind Co Ltd Optical circuit element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013174452A (en) * 2012-02-23 2013-09-05 Anritsu Corp Signal analyzer and frequency extension method using the device

Also Published As

Publication number Publication date
JPS6243609B2 (en) 1987-09-16

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