GB1573224A - Tuning circuits for communications receivers - Google Patents

Tuning circuits for communications receivers Download PDF

Info

Publication number: GB1573224A
Authority: GB; United Kingdom
Prior art keywords: counter; frequency; output; oscillator; tuning circuit
Prior art date: 1976-02-17
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

GB207377A

Other languages

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.)

Licentia Patent Verwaltungs GmbH

Licentia Oy

Original Assignee

Licentia Patent Verwaltungs GmbH

Licentia Oy

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.)

1976-02-17

Filing date

1977-01-19

Publication date

1980-08-20

1977-01-19 Application filed by Licentia Patent Verwaltungs GmbH, Licentia Oy filed Critical Licentia Patent Verwaltungs GmbH

1980-08-20 Publication of GB1573224A publication Critical patent/GB1573224A/en

Status Expired legal-status Critical Current

Links

230000001105 regulatory effect Effects 0.000 claims description 32
230000010355 oscillation Effects 0.000 claims description 12
230000000694 effects Effects 0.000 claims description 10
230000004044 response Effects 0.000 claims description 5
230000005540 biological transmission Effects 0.000 claims description 4
238000011156 evaluation Methods 0.000 claims description 4
230000033228 biological regulation Effects 0.000 claims description 3
229910002056 binary alloy Inorganic materials 0.000 claims description 2
238000000926 separation method Methods 0.000 claims 2
230000008859 change Effects 0.000 description 4
230000009471 action Effects 0.000 description 2
230000007423 decrease Effects 0.000 description 2
230000009467 reduction Effects 0.000 description 2
230000004075 alteration Effects 0.000 description 1
239000003990 capacitor Substances 0.000 description 1
238000010276 construction Methods 0.000 description 1
238000009795 derivation Methods 0.000 description 1
238000007599 discharging Methods 0.000 description 1
230000009977 dual effect Effects 0.000 description 1
238000000034 method Methods 0.000 description 1
QHGVXILFMXYDRS-UHFFFAOYSA-N pyraclofos Chemical compound C1=C(OP(=O)(OCC)SCCC)C=NN1C1=CC=C(Cl)C=C1 QHGVXILFMXYDRS-UHFFFAOYSA-N 0.000 description 1
239000010453 quartz Substances 0.000 description 1
VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
230000003068 static effect Effects 0.000 description 1

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
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
- H03L7/181—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a numerical count result being used for locking the loop, the counter counting during fixed time intervals

Landscapes

Engineering & Computer Science (AREA)
Computer Hardware Design (AREA)
Microelectronics & Electronic Packaging (AREA)
Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Superheterodyne Receivers (AREA)

GB207377A 1976-02-17 1977-01-19 Tuning circuits for communications receivers Expired GB1573224A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE19762606230 DE2606230C3 (de)	1976-02-17	1976-02-17	Abstimmschaltung für Überlagerungsempfänger

Publications (1)

Publication Number	Publication Date
GB1573224A true GB1573224A (en)	1980-08-20

Family

ID=5970070

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB207377A Expired GB1573224A (en)	1976-02-17	1977-01-19	Tuning circuits for communications receivers

Country Status (4)

Country	Link
JP (2)	JPS52100807A (de)
DE (1)	DE2606230C3 (de)
FR (1)	FR2341982A1 (de)
GB (1)	GB1573224A (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2912710C3 (de) *	1979-03-30	1982-02-25	Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt	Abstimmschaltung für einen Empfänger, deren Abstimmlage von dem Stand eines Zählers bestimmt wird
JPH033990Y2 (de) *	1986-01-31	1991-01-31
JPS63123079U (de) *	1987-02-04	1988-08-10
JP2541224B2 (ja) *	1987-06-15	1996-10-09	ソニー株式会社	シンセサイザ受信機
JPS645350U (de) *	1987-06-30	1989-01-12
JPH01135684U (de) *	1988-03-11	1989-09-18

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2362116C3 (de) *	1973-12-14	1980-01-24	Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt	Auf einstellbare Frequenzwerte rastbarer Steuergenerator

1976
- 1976-02-17 DE DE19762606230 patent/DE2606230C3/de not_active Expired
1977
- 1977-01-19 GB GB207377A patent/GB1573224A/en not_active Expired
- 1977-02-15 JP JP1544977A patent/JPS52100807A/ja active Pending
- 1977-02-17 FR FR7704604A patent/FR2341982A1/fr active Granted
1978
- 1978-09-12 JP JP11213478A patent/JPS6019169B2/ja not_active Expired

Also Published As

Publication number	Publication date
DE2606230C3 (de)	1980-03-27
JPS5463601A (en)	1979-05-22
DE2606230A1 (de)	1977-08-18
FR2341982B1 (de)	1982-07-30
JPS6019169B2 (ja)	1985-05-15
FR2341982A1 (fr)	1977-09-16
JPS52100807A (en)	1977-08-24
DE2606230B2 (de)	1979-07-26

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Legal Events

Date	Code	Title	Description
1980-11-05	PS	Patent sealed
1994-09-14	PCNP	Patent ceased through non-payment of renewal fee	Effective date: 19940119