JPS6237569B2 - - Google Patents

Info

Publication number
JPS6237569B2
JPS6237569B2 JP52122788A JP12278877A JPS6237569B2 JP S6237569 B2 JPS6237569 B2 JP S6237569B2 JP 52122788 A JP52122788 A JP 52122788A JP 12278877 A JP12278877 A JP 12278877A JP S6237569 B2 JPS6237569 B2 JP S6237569B2
Authority
JP
Japan
Prior art keywords
frequency
band
frequency divider
division ratio
reference 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.)
Expired
Application number
JP52122788A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5455351A (en
Inventor
Noriaki Kato
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
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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Priority to JP12278877A priority Critical patent/JPS5455351A/ja
Publication of JPS5455351A publication Critical patent/JPS5455351A/ja
Publication of JPS6237569B2 publication Critical patent/JPS6237569B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
    • H03J5/0272—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Superheterodyne Receivers (AREA)
JP12278877A 1977-10-12 1977-10-12 Multiband phase locked loop frequency synthesizer Granted JPS5455351A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12278877A JPS5455351A (en) 1977-10-12 1977-10-12 Multiband phase locked loop frequency synthesizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12278877A JPS5455351A (en) 1977-10-12 1977-10-12 Multiband phase locked loop frequency synthesizer

Publications (2)

Publication Number Publication Date
JPS5455351A JPS5455351A (en) 1979-05-02
JPS6237569B2 true JPS6237569B2 (enrdf_load_html_response) 1987-08-13

Family

ID=14844627

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12278877A Granted JPS5455351A (en) 1977-10-12 1977-10-12 Multiband phase locked loop frequency synthesizer

Country Status (1)

Country Link
JP (1) JPS5455351A (enrdf_load_html_response)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58207734A (ja) * 1982-05-28 1983-12-03 Matsushita Electric Ind Co Ltd 受信装置
US4559505A (en) * 1983-01-04 1985-12-17 Motorola, Inc. Frequency synthesizer with improved priority channel switching
JPS6098949U (ja) * 1984-10-08 1985-07-05 日本電気株式会社 デイジタルチユ−ニングシステム

Also Published As

Publication number Publication date
JPS5455351A (en) 1979-05-02

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