JPS54104718A - Pick up system for intermediate frequency signal - Google Patents

Pick up system for intermediate frequency signal

Info

Publication number
JPS54104718A
JPS54104718A JP1161278A JP1161278A JPS54104718A JP S54104718 A JPS54104718 A JP S54104718A JP 1161278 A JP1161278 A JP 1161278A JP 1161278 A JP1161278 A JP 1161278A JP S54104718 A JPS54104718 A JP S54104718A
Authority
JP
Japan
Prior art keywords
transistors
pick
collector
differential pair
halfway
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
JP1161278A
Other languages
Japanese (ja)
Other versions
JPS6143900B2 (en
Inventor
Masami Miura
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 JP1161278A priority Critical patent/JPS54104718A/en
Publication of JPS54104718A publication Critical patent/JPS54104718A/en
Publication of JPS6143900B2 publication Critical patent/JPS6143900B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Noise Elimination (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

PURPOSE: To enable to pick up the signal without deteriorating the AM rejection ratio from the halfway of IF stage, by stabilizing the collector potential of the transistors in DC manner constituting one side of the differential pair transistors at each IF amplifier stage by two transistors.
CONSTITUTION: The transistors Tr22 and 24 are respectively connected in cascade to one Tr2 and 9 of the differential pair Tr at each IF amplifier stage. The collector of Tr22 and 24 is connected to the power supply via the respective load resistors 21, 23, and the output is fed to the addition circuit 20 via the rectifying circuits 18 and 19 from the collector of Tr22 and 24, outputting is made from the terminal G. The Tr22 and 24 mentioned above are connected to the power supply terminal D regulated for each base and the collector potential of Tr2 and 9 constituting one side of the differential pair Tr is stable in DC manner, allowing to pick up the signal without deteriorating the AM rejection ratio from the halfway of the IF stages.
COPYRIGHT: (C)1979,JPO&Japio
JP1161278A 1978-02-04 1978-02-04 Pick up system for intermediate frequency signal Granted JPS54104718A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1161278A JPS54104718A (en) 1978-02-04 1978-02-04 Pick up system for intermediate frequency signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1161278A JPS54104718A (en) 1978-02-04 1978-02-04 Pick up system for intermediate frequency signal

Publications (2)

Publication Number Publication Date
JPS54104718A true JPS54104718A (en) 1979-08-17
JPS6143900B2 JPS6143900B2 (en) 1986-09-30

Family

ID=11782725

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1161278A Granted JPS54104718A (en) 1978-02-04 1978-02-04 Pick up system for intermediate frequency signal

Country Status (1)

Country Link
JP (1) JPS54104718A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5943635A (en) * 1982-09-04 1984-03-10 Toko Inc Detecting circuit of signal intensity

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5943635A (en) * 1982-09-04 1984-03-10 Toko Inc Detecting circuit of signal intensity
JPS6351611B2 (en) * 1982-09-04 1988-10-14 Eastern Steel

Also Published As

Publication number Publication date
JPS6143900B2 (en) 1986-09-30

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