JPS5455351A - Multiband phase locked loop frequency synthesizer - Google Patents

Multiband phase locked loop frequency synthesizer

Info

Publication number
JPS5455351A
JPS5455351A JP12278877A JP12278877A JPS5455351A JP S5455351 A JPS5455351 A JP S5455351A JP 12278877 A JP12278877 A JP 12278877A JP 12278877 A JP12278877 A JP 12278877A JP S5455351 A JPS5455351 A JP S5455351A
Authority
JP
Japan
Prior art keywords
programable
divider
dividing
switching
locked loop
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
JP12278877A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6237569B2 (enrdf_load_stackoverflow
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
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 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 true JPS5455351A (en) 1979-05-02
JPS6237569B2 JPS6237569B2 (enrdf_load_stackoverflow) 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_stackoverflow)

Cited By (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
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
US4559505A (en) * 1983-01-04 1985-12-17 Motorola, Inc. Frequency synthesizer with improved priority channel switching

Cited By (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
JPS6237569B2 (enrdf_load_stackoverflow) 1987-08-13

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