JPS5769927A - Pll synthesizer receiver - Google Patents

Pll synthesizer receiver

Info

Publication number
JPS5769927A
JPS5769927A JP14725380A JP14725380A JPS5769927A JP S5769927 A JPS5769927 A JP S5769927A JP 14725380 A JP14725380 A JP 14725380A JP 14725380 A JP14725380 A JP 14725380A JP S5769927 A JPS5769927 A JP S5769927A
Authority
JP
Japan
Prior art keywords
frequency
oscillator
output
mixer
local oscillator
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
JP14725380A
Other languages
Japanese (ja)
Inventor
Shuichi Ninomiya
Kiyotake Fukui
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP14725380A priority Critical patent/JPS5769927A/en
Publication of JPS5769927A publication Critical patent/JPS5769927A/en
Pending 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)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

PURPOSE:To increase the frequency stability, by constituting the 1st and 2nd local oscillator with PLL circuits. CONSTITUTION:The output of the 1st local oscillator 3 is applied to a variable frequency divider 8, frequency-divided according to a frequency dividing code N1 outputted from a channel selection control section 26, phase is compares with the output of a reference frequency generator 9 at a phase comparator 10 and applied to the 1st local oscillator 3 via a filter 11. The output of an oscillator 12 is mixed with the output of a reference frequency oscillator 14 at a mixer 17 for frequency conversion, applied to a variable frequecy divider 19 via a filter 18, and the frequency of the oscillator 12 is controlled in the same way as the 1st PLL circuit 23. On the other hand, the output of the oscillator 12 is frequency-divided to 1/M with a frequency divider 13 and mixed with the output of the reference frequency oscillator 14 with the mixer 15 and applied to the 2nd mixer 5 of the signal reception system via a filter 16. Thus, the minimum frequency interval changeable for the 2nd local oscillator 25 can be made to 1/M of the minimum frequency interval lockable at the 2nd PLL circuit 26.
JP14725380A 1980-10-20 1980-10-20 Pll synthesizer receiver Pending JPS5769927A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14725380A JPS5769927A (en) 1980-10-20 1980-10-20 Pll synthesizer receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14725380A JPS5769927A (en) 1980-10-20 1980-10-20 Pll synthesizer receiver

Publications (1)

Publication Number Publication Date
JPS5769927A true JPS5769927A (en) 1982-04-30

Family

ID=15426042

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14725380A Pending JPS5769927A (en) 1980-10-20 1980-10-20 Pll synthesizer receiver

Country Status (1)

Country Link
JP (1) JPS5769927A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984004637A1 (en) * 1983-05-16 1984-11-22 Motorola Inc A receiver system for eliminating self-quieting spurious responses
US4551856A (en) * 1983-05-16 1985-11-05 Motorola, Inc. Synthesized multiple conversion receiver system with provision for avoiding receiver self-quieting spurious response
US5179729A (en) * 1989-02-17 1993-01-12 Matsushita Electric Industrial Co., Ltd. Tuner station selecting apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5531304A (en) * 1978-08-28 1980-03-05 Advantest Corp Reception frequency selecting device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5531304A (en) * 1978-08-28 1980-03-05 Advantest Corp Reception frequency selecting device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984004637A1 (en) * 1983-05-16 1984-11-22 Motorola Inc A receiver system for eliminating self-quieting spurious responses
EP0144394A1 (en) * 1983-05-16 1985-06-19 Motorola Inc A receiver system for eliminating self-quieting spurious responses.
US4551856A (en) * 1983-05-16 1985-11-05 Motorola, Inc. Synthesized multiple conversion receiver system with provision for avoiding receiver self-quieting spurious response
EP0144394B1 (en) * 1983-05-16 1989-11-15 Motorola, Inc. A receiver system for eliminating self-quieting spurious responses
US5179729A (en) * 1989-02-17 1993-01-12 Matsushita Electric Industrial Co., Ltd. Tuner station selecting apparatus

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