JPS5531304A - Reception frequency selecting device - Google Patents

Reception frequency selecting device

Info

Publication number
JPS5531304A
JPS5531304A JP10387478A JP10387478A JPS5531304A JP S5531304 A JPS5531304 A JP S5531304A JP 10387478 A JP10387478 A JP 10387478A JP 10387478 A JP10387478 A JP 10387478A JP S5531304 A JPS5531304 A JP S5531304A
Authority
JP
Japan
Prior art keywords
frequency
output
adder
mixer
maximum
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
JP10387478A
Other languages
Japanese (ja)
Other versions
JPS5824045B2 (en
Inventor
Ichiro Tachibana
Shoichi Nakamura
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.)
Advantest Corp
Original Assignee
Advantest Corp
Takeda Riken Industries 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 Advantest Corp, Takeda Riken Industries Co Ltd filed Critical Advantest Corp
Priority to JP10387478A priority Critical patent/JPS5824045B2/en
Publication of JPS5531304A publication Critical patent/JPS5531304A/en
Publication of JPS5824045B2 publication Critical patent/JPS5824045B2/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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

PURPOSE:To give the continuous switching to both the higher- and lower-rank local oscillation frequencies for the radio receiver or the reception frequency selecting device of the spectrum analyzer. CONSTITUTION:The input signal of terminal T plus the output of local oscillator L1 are applied to mixer M1, and the output of M1 and the output of local oscillator L2 are applied to mixer M2. Thus the fixed intermediate frequency output is obtained. The frequency of L2 varies continuously according to the revolution of knob C2 of fine adjuster F, and this variation range is equivalent to the frequency change of the 1st stage of L1. And the addition and subtraction pulses are generated by pulse generator P by setting knob C2 at the maximum and minimum positions each, and at the same time C2 has a continuous turning. When rough adjuster C1 is set to a proper switching position, the corresponding voltage is obtained through adder S to decide the frequency stages of L1. The value of counter N varies according to the maximum and minimum setting of C2 and then applied to adder S after the D/A conversion to increase and decrease the stage position for the frequency of L1.
JP10387478A 1978-08-28 1978-08-28 Reception frequency selection device Expired JPS5824045B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10387478A JPS5824045B2 (en) 1978-08-28 1978-08-28 Reception frequency selection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10387478A JPS5824045B2 (en) 1978-08-28 1978-08-28 Reception frequency selection device

Publications (2)

Publication Number Publication Date
JPS5531304A true JPS5531304A (en) 1980-03-05
JPS5824045B2 JPS5824045B2 (en) 1983-05-19

Family

ID=14365573

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10387478A Expired JPS5824045B2 (en) 1978-08-28 1978-08-28 Reception frequency selection device

Country Status (1)

Country Link
JP (1) JPS5824045B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5736028U (en) * 1980-08-11 1982-02-25
JPS5769927A (en) * 1980-10-20 1982-04-30 Matsushita Electric Ind Co Ltd Pll synthesizer receiver
JPH02207175A (en) * 1989-01-26 1990-08-16 Vdo Adolf Schindling Ag Correcting equipment of air-fuel mixture composition
JP2009171000A (en) * 2008-01-11 2009-07-30 Panasonic Corp Receiver and electronic device using same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4652546B2 (en) * 2000-09-21 2011-03-16 三星電子株式会社 Receiving machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5736028U (en) * 1980-08-11 1982-02-25
JPS5769927A (en) * 1980-10-20 1982-04-30 Matsushita Electric Ind Co Ltd Pll synthesizer receiver
JPH02207175A (en) * 1989-01-26 1990-08-16 Vdo Adolf Schindling Ag Correcting equipment of air-fuel mixture composition
JP2009171000A (en) * 2008-01-11 2009-07-30 Panasonic Corp Receiver and electronic device using same

Also Published As

Publication number Publication date
JPS5824045B2 (en) 1983-05-19

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