IT7921591A0 - RECEIVING CIRCUIT WITH A FREQUENCY SYNTHESIZER IN COMMUNICATIONS RECEIVER EQUIPMENT. - Google Patents

RECEIVING CIRCUIT WITH A FREQUENCY SYNTHESIZER IN COMMUNICATIONS RECEIVER EQUIPMENT.

Info

Publication number
IT7921591A0
IT7921591A0 IT7921591A IT2159179A IT7921591A0 IT 7921591 A0 IT7921591 A0 IT 7921591A0 IT 7921591 A IT7921591 A IT 7921591A IT 2159179 A IT2159179 A IT 2159179A IT 7921591 A0 IT7921591 A0 IT 7921591A0
Authority
IT
Italy
Prior art keywords
receiving circuit
frequency synthesizer
receiver equipment
communications receiver
communications
Prior art date
Application number
IT7921591A
Other languages
Italian (it)
Other versions
IT1111927B (en
Original Assignee
Loewe Opta Gmbh
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 Loewe Opta Gmbh filed Critical Loewe Opta Gmbh
Publication of IT7921591A0 publication Critical patent/IT7921591A0/en
Application granted granted Critical
Publication of IT1111927B publication Critical patent/IT1111927B/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/06—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers
    • H03J7/065—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers the counter or frequency divider being used in a phase locked loop
    • 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)
IT21591/79A 1978-04-04 1979-04-04 RECEIVING CIRCUIT WITH A FREQUENCY SYNTHESIZER IN COMMUNICATION TECHNOLOGY RECEIVING DEVICES IT1111927B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2814429A DE2814429C3 (en) 1978-04-04 1978-04-04 Receiver circuit with a frequency sytithetizer in telecommunications receiving devices

Publications (2)

Publication Number Publication Date
IT7921591A0 true IT7921591A0 (en) 1979-04-04
IT1111927B IT1111927B (en) 1986-01-13

Family

ID=6036101

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21591/79A IT1111927B (en) 1978-04-04 1979-04-04 RECEIVING CIRCUIT WITH A FREQUENCY SYNTHESIZER IN COMMUNICATION TECHNOLOGY RECEIVING DEVICES

Country Status (7)

Country Link
CH (1) CH641608A5 (en)
DE (1) DE2814429C3 (en)
FR (1) FR2422293A1 (en)
GB (1) GB2018065B (en)
IT (1) IT1111927B (en)
NL (1) NL180795C (en)
SE (1) SE427885B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5580928A (en) * 1978-12-15 1980-06-18 Sony Corp Channel selection device
ZA81769B (en) * 1980-02-18 1982-02-24 Sangamo Weston Receivers suitable for use in remotely-operable switching devices and data transmission systems
US4709406A (en) * 1985-09-19 1987-11-24 Matsushita Electric Industrial Co., Ltd. A.F.C. system for broad-band FM receiver
US4959872A (en) * 1988-06-23 1990-09-25 Kabushiki Kaisha Toshiba Automatic frequency control apparatus for FM receivers
JP4089003B2 (en) * 1998-04-01 2008-05-21 ソニー株式会社 Receiver and receiving method
JP3978744B2 (en) 2002-07-25 2007-09-19 パイオニア株式会社 Digital to analog converter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1412412A1 (en) * 1960-12-27 1968-10-03 Metz App Werke Automatic sharpening
US3624512A (en) * 1969-06-02 1971-11-30 Rca Corp Automatic frequency control system
FR2175671B1 (en) * 1972-03-17 1977-04-01 Trt Telecom Radio Electr
US4025953A (en) * 1975-11-26 1977-05-24 Quasar Electronics Corporation Frequency synthesizer tuning system for television receivers
US4041535A (en) * 1976-07-22 1977-08-09 Matsushita Electric Corporation Of America Frequency synthesizer tuning system with signal seek control

Also Published As

Publication number Publication date
DE2814429A1 (en) 1979-10-25
NL180795C (en) 1987-04-16
IT1111927B (en) 1986-01-13
SE7902787L (en) 1979-10-05
NL7902658A (en) 1979-10-08
DE2814429C3 (en) 1980-10-09
FR2422293A1 (en) 1979-11-02
DE2814429B2 (en) 1980-02-21
CH641608A5 (en) 1984-02-29
NL180795B (en) 1986-11-17
FR2422293B1 (en) 1982-06-18
SE427885B (en) 1983-05-09
GB2018065A (en) 1979-10-10
GB2018065B (en) 1982-07-21

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970428