JPS5769926A - Pll synthesizer receiver - Google Patents

Pll synthesizer receiver

Info

Publication number
JPS5769926A
JPS5769926A JP14725080A JP14725080A JPS5769926A JP S5769926 A JPS5769926 A JP S5769926A JP 14725080 A JP14725080 A JP 14725080A JP 14725080 A JP14725080 A JP 14725080A JP S5769926 A JPS5769926 A JP S5769926A
Authority
JP
Japan
Prior art keywords
frequency
pll circuit
output
oscillator
control
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
JP14725080A
Other languages
Japanese (ja)
Other versions
JPS639684B2 (en
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 JP14725080A priority Critical patent/JPS5769926A/en
Publication of JPS5769926A publication Critical patent/JPS5769926A/en
Publication of JPS639684B2 publication Critical patent/JPS639684B2/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)
  • Superheterodyne Receivers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE:To increase the frequency stability with simple constitution. CONSTITUTION:The output of the 1st local oscillator 13 is ampplied to a PLL circuit 14, and control is made so that the output frequency of the 1st local oscillator 13 is NF1 with the frequency dividing ratio code N outputted from a channel selction control section 21 and the control output of the PLL circuit 14. The output of the oscillator 15 is applied to a PLL circuit 16, and control is made so that the frequency of the oscillator 15 is nF2 with the frequency dividing ratio code n outputted from the channel selection control section 21 and the control output of the PLL circuit 16. The output of the oscillator 15 is frequency-divided to 1/M with a fixed frequency divider 17, the result is mixed and frequency-converted with an output frequency fx of a reference frequency oscillator 19 by means of a mixer 18, and applied to the 2nd mixer 5 in a signal path. Thus, the minimum frequency interval changeable by the 2nd local oscillation frequency is 1/M of the minimum frequency interval lockable at the 2nd PLL circuit 23, allowing the oscillation frequency of the 1st PLL circuit 22 and the 2nd PLL circuit 23 to be continuously controlled.
JP14725080A 1980-10-20 1980-10-20 Pll synthesizer receiver Granted JPS5769926A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14725080A JPS5769926A (en) 1980-10-20 1980-10-20 Pll synthesizer receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14725080A JPS5769926A (en) 1980-10-20 1980-10-20 Pll synthesizer receiver

Publications (2)

Publication Number Publication Date
JPS5769926A true JPS5769926A (en) 1982-04-30
JPS639684B2 JPS639684B2 (en) 1988-03-01

Family

ID=15425974

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14725080A Granted JPS5769926A (en) 1980-10-20 1980-10-20 Pll synthesizer receiver

Country Status (1)

Country Link
JP (1) JPS5769926A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5478010A (en) * 1977-12-02 1979-06-21 Beltek Corp Radio receiver

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5478010A (en) * 1977-12-02 1979-06-21 Beltek Corp Radio receiver

Also Published As

Publication number Publication date
JPS639684B2 (en) 1988-03-01

Similar Documents

Publication Publication Date Title
EP0306249A3 (en) Frequency synthesizer
JPS54102814A (en) Synthesizer receiver
CA2071421A1 (en) Automatic frequency control circuit
GR3021000T3 (en) On channel agile FM demodulator
JPS55166326A (en) Channel switching circuit
JPS5769926A (en) Pll synthesizer receiver
JPS5613834A (en) Synthesizer tuner
FR2330198A1 (en) Freely oscillating tunable oscillator - has frequency divider for oscillator output signal, and several detectors
JPS5612133A (en) Synthesizer type receiver
JPS5769927A (en) Pll synthesizer receiver
JPS5477004A (en) Channel selector
JPS5730425A (en) Channel selector
FR2263635A1 (en) High stability frequency converter - uses three mixing circuits and a quartz controlled pilot oscillator
JPS6455911A (en) Frequency synthesizer
GB1211971A (en) Frequency synthesizer apparatus
JPS6460021A (en) Phase locked oscillation circuit
JPS55118234A (en) Fm receiver
JPS561630A (en) Broadcast receiver
JPS5784629A (en) Channel selection circuit
JPS54122914A (en) Radio receiver of pll frequency synthesizer system
JPS5676640A (en) Receiver of frequency synthesizer system
JPS55121710A (en) Short-medium wave conversion system
JPS561615A (en) Channel selecting device
JPS55662A (en) Channel selection device
JPS52152108A (en) Receiver