JPS54119819A - Radio receiver - Google Patents

Radio receiver

Info

Publication number
JPS54119819A
JPS54119819A JP2732278A JP2732278A JPS54119819A JP S54119819 A JPS54119819 A JP S54119819A JP 2732278 A JP2732278 A JP 2732278A JP 2732278 A JP2732278 A JP 2732278A JP S54119819 A JPS54119819 A JP S54119819A
Authority
JP
Japan
Prior art keywords
electric field
detector
voltage
output
receivers
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
Application number
JP2732278A
Other languages
Japanese (ja)
Inventor
Yukio Fukumura
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 JP2732278A priority Critical patent/JPS54119819A/en
Publication of JPS54119819A publication Critical patent/JPS54119819A/en
Pending 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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/1607—Supply circuits

Landscapes

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

Abstract

PURPOSE:To reduce the power consumption receivers, by lowering the power supply voltage fed automatically to the receivers, when input electric field is strong, in the lower power consumption receivers such as portable radio units. CONSTITUTION:The reception electric field detctor 6 inputting the output intermediate frequency signal of the frequency converter 1 performing frequency conversion of the reception signal inputted from the antenna 9 and detecting the received electric field of the input reception signal, is provided, and the output of the detector 6 is fed to the DC-DC voltage converter 7 which supplies power supply voltage V to the local oscillator 6 of the receiver, frequency converter 1, intermediate frequency amplifier 3, detector and low frequency amplifier 4, and received electric field detector, by inputting the power from the battery 8. Further, when the electric field of received signal is strong, the output of the detector 6 is increased, and the output voltage of the voltage converter 7 is lowered than the voltage normally fed, allowing to reduce the power consumption of the battery 8 consuming with the receiver.
JP2732278A 1978-03-09 1978-03-09 Radio receiver Pending JPS54119819A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2732278A JPS54119819A (en) 1978-03-09 1978-03-09 Radio receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2732278A JPS54119819A (en) 1978-03-09 1978-03-09 Radio receiver

Publications (1)

Publication Number Publication Date
JPS54119819A true JPS54119819A (en) 1979-09-18

Family

ID=12217828

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2732278A Pending JPS54119819A (en) 1978-03-09 1978-03-09 Radio receiver

Country Status (1)

Country Link
JP (1) JPS54119819A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4340973A (en) * 1979-09-29 1982-07-20 Nippon Electric Co., Ltd. Selective calling receiver including a voltage converter with low power consumption
JPS61152132A (en) * 1984-12-26 1986-07-10 Toshiba Corp Receiver
US5179724A (en) * 1991-01-15 1993-01-12 Ericsson G.E. Mobile Communications Holding Inc. Conserving power in hand held mobile telephones during a receiving mode of operation
WO2004091110A1 (en) * 2003-04-07 2004-10-21 Mitsubishi Denki Kabushiki Kaisha Transmission/reception device and reception device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4340973A (en) * 1979-09-29 1982-07-20 Nippon Electric Co., Ltd. Selective calling receiver including a voltage converter with low power consumption
JPS61152132A (en) * 1984-12-26 1986-07-10 Toshiba Corp Receiver
JPH0789622B2 (en) * 1984-12-26 1995-09-27 株式会社東芝 Receiving machine
US5179724A (en) * 1991-01-15 1993-01-12 Ericsson G.E. Mobile Communications Holding Inc. Conserving power in hand held mobile telephones during a receiving mode of operation
WO2004091110A1 (en) * 2003-04-07 2004-10-21 Mitsubishi Denki Kabushiki Kaisha Transmission/reception device and reception device

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