IT1021095B - Sintetizzatore di frequenza a bande di frequenza multiple - Google Patents

Sintetizzatore di frequenza a bande di frequenza multiple

Info

Publication number: IT1021095B
Authority: IT; Italy
Prior art keywords: frequency; synthesizer; bands; frequency bands; frequency synthesizer
Prior art date: 1973-08-09

Application number

IT25829/74A

Other languages

English (en)

Original Assignee

Int Standard Electric Corp

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.)

1973-08-09

Filing date

1974-08-01

Publication date

1978-01-30

1974-08-01 Application filed by Int Standard Electric Corp filed Critical Int Standard Electric Corp

1978-01-30 Application granted granted Critical

1978-01-30 Publication of IT1021095B publication Critical patent/IT1021095B/it

Classifications

- 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
- H03L7/183—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 time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
- H03L7/185—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 time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number using a mixer in the loop

IT25829/74A 1973-08-09 1974-08-01 Sintetizzatore di frequenza a bande di frequenza multiple IT1021095B (it)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US00387079A US3854102A (en)	1973-08-09	1973-08-09	Multiple frequency band frequency synthesizer

Publications (1)

Publication Number	Publication Date
IT1021095B true IT1021095B (it)	1978-01-30

Family

ID=23528368

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT25829/74A IT1021095B (it)	1973-08-09	1974-08-01	Sintetizzatore di frequenza a bande di frequenza multiple

Country Status (4)

Country	Link
US (1)	US3854102A (it)
DE (1)	DE2437168A1 (it)
FR (1)	FR2240568B1 (it)
IT (1)	IT1021095B (it)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4153884A (en) *	1975-12-16	1979-05-08	Sanyo Electric Co., Ltd.	Frequency synthesizer for transmitter/receiver using a phase locked loop
JPS5273659A (en) *	1975-12-16	1977-06-20	Sanyo Electric Co Ltd	Frequency synthesizer
DE3015484A1 (de) *	1980-04-22	1981-10-29	Siemens AG, 1000 Berlin und 8000 München	Verfahren zur frequenzstabilisierung eines hochfrequenten freischwingenden oszillators
US4707665A (en) *	1984-01-31	1987-11-17	Westinghouse Electric Corp.	Low noise signal generator
DE3579649D1 (de) *	1984-07-26	1990-10-18	Hewlett Packard Co	Schaltungsanordnung zur frequenzsynthese.
US5619581A (en) *	1994-05-18	1997-04-08	Lord Corporation	Active noise and vibration cancellation system
US5926515A (en) *	1995-12-26	1999-07-20	Samsung Electronics Co., Ltd.	Phase locked loop for improving a phase locking time
US6150890A (en) *	1998-03-19	2000-11-21	Conexant Systems, Inc.	Dual band transmitter for a cellular phone comprising a PLL
US6005443A (en) *	1998-03-19	1999-12-21	Conexant Systems, Inc.	Phase locked loop frequency synthesizer for multi-band application
US7146110B2 (en)	2003-02-11	2006-12-05	Optium Corporation	Optical transmitter with SBS suppression

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2354800A (en) *	1941-08-07	1944-08-01	Rca Corp	Multiple frequency source
US3130376A (en) *	1962-03-19	1964-04-21	Hull Instr Inc	Wide range signal generator
US3611175A (en) *	1970-03-26	1971-10-05	Sylvania Electric Prod	Search circuit for frequency synthesizer

1973
- 1973-08-09 US US00387079A patent/US3854102A/en not_active Expired - Lifetime
1974
- 1974-08-01 DE DE2437168A patent/DE2437168A1/de active Pending
- 1974-08-01 IT IT25829/74A patent/IT1021095B/it active
- 1974-08-06 FR FR7427253A patent/FR2240568B1/fr not_active Expired

Also Published As

Publication number	Publication date
FR2240568B1 (it)	1979-08-03
FR2240568A1 (it)	1975-03-07
DE2437168A1 (de)	1975-02-20
US3854102A (en)	1974-12-10

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