JPS56110346A - Control circuit of transmitter output - Google Patents

Control circuit of transmitter output

Info

Publication number
JPS56110346A
JPS56110346A JP1313280A JP1313280A JPS56110346A JP S56110346 A JPS56110346 A JP S56110346A JP 1313280 A JP1313280 A JP 1313280A JP 1313280 A JP1313280 A JP 1313280A JP S56110346 A JPS56110346 A JP S56110346A
Authority
JP
Japan
Prior art keywords
output
transistor
controlled
base
discriminator
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
JP1313280A
Other languages
Japanese (ja)
Other versions
JPS5850057B2 (en
Inventor
Shigeru Kimura
Sumio Endo
Mamoru Tateishi
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.)
Nippon Telegraph and Telephone Corp
Panasonic Mobile Communications Co Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Matsushita Communication Industrial 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 Nippon Telegraph and Telephone Corp, Matsushita Communication Industrial Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP55013132A priority Critical patent/JPS5850057B2/en
Publication of JPS56110346A publication Critical patent/JPS56110346A/en
Publication of JPS5850057B2 publication Critical patent/JPS5850057B2/en
Expired 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transmitters (AREA)

Abstract

PURPOSE:To increase the accuracy of control for the transmission output, by applying the output of a wave detector and a reference voltage generator to a comparator after increasing or reducing it properly by the output of a deciding circuit and controlling the power supply voltage of an electric power amplifier with the output of the comparator. PURPOSE:The switches 13 and 14 are turned on and off, respectively, by the control of the discriminator 15 in case a mobile station is distant away from the base station by a certain limit or more. Thus the output of the wave detector 4 receives a partial pressure by the resistors 8 and 9 to be applied to the base of the transistor 5. Accordingly, for instance, the electric power amplifier 1 or the like is controlled with the base input of the transistor 5 set at about 3-4V. On the contrary, in case the mobile station is set close to the base station within a certain limit, the discriminator 15 works to turn the switches 13 and 14 off and on, respectively. As a result, the output of the detector 4 is applied directly to the transistor 5. On the other hand, the reference voltage is divided by the resistances 10-12 with the system controlled with the comparison voltage of 1-1.5V. Thus the output of the transmitter is controlled at a fixed low level.
JP55013132A 1980-02-05 1980-02-05 Transmitter output control circuit Expired JPS5850057B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55013132A JPS5850057B2 (en) 1980-02-05 1980-02-05 Transmitter output control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55013132A JPS5850057B2 (en) 1980-02-05 1980-02-05 Transmitter output control circuit

Publications (2)

Publication Number Publication Date
JPS56110346A true JPS56110346A (en) 1981-09-01
JPS5850057B2 JPS5850057B2 (en) 1983-11-08

Family

ID=11824621

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55013132A Expired JPS5850057B2 (en) 1980-02-05 1980-02-05 Transmitter output control circuit

Country Status (1)

Country Link
JP (1) JPS5850057B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS591244U (en) * 1982-06-24 1984-01-06 三菱電機株式会社 transmitter
JPS59106236U (en) * 1982-12-29 1984-07-17 日立電子株式会社 transmitter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5464916A (en) * 1977-11-01 1979-05-25 Oki Electric Ind Co Ltd Transmitter
JPS54112111A (en) * 1978-02-22 1979-09-01 Nec Corp Automatic power control system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5464916A (en) * 1977-11-01 1979-05-25 Oki Electric Ind Co Ltd Transmitter
JPS54112111A (en) * 1978-02-22 1979-09-01 Nec Corp Automatic power control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS591244U (en) * 1982-06-24 1984-01-06 三菱電機株式会社 transmitter
JPS59106236U (en) * 1982-12-29 1984-07-17 日立電子株式会社 transmitter

Also Published As

Publication number Publication date
JPS5850057B2 (en) 1983-11-08

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