ITRM910930A1 - Sintetizzatore di frequenza pll insensibile a variazioni di parametri. - Google Patents

Sintetizzatore di frequenza pll insensibile a variazioni di parametri.

Info

Publication number
ITRM910930A1
ITRM910930A1 IT000930A ITRM910930A ITRM910930A1 IT RM910930 A1 ITRM910930 A1 IT RM910930A1 IT 000930 A IT000930 A IT 000930A IT RM910930 A ITRM910930 A IT RM910930A IT RM910930 A1 ITRM910930 A1 IT RM910930A1
Authority
IT
Italy
Prior art keywords
insensitive
frequency synthesizer
pll frequency
parameter variations
parameter
Prior art date
Application number
IT000930A
Other languages
English (en)
Inventor
Alexander W Hietala
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of ITRM910930A0 publication Critical patent/ITRM910930A0/it
Publication of ITRM910930A1 publication Critical patent/ITRM910930A1/it
Application granted granted Critical
Publication of IT1250978B publication Critical patent/IT1250978B/it

Links

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
    • 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
    • H03L7/08—Details of the phase-locked loop
    • H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • H03L7/089—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses
    • H03L7/0891—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses the up-down pulses controlling source and sink current generators, e.g. a charge pump
    • 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
    • H03L7/08—Details of the phase-locked loop
    • H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • H03L7/093—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using special filtering or amplification characteristics in the loop
ITRM910930A 1990-12-14 1991-12-11 Sintetizzatore di frequenza pll insensibile a variazioni di parametri. IT1250978B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/628,533 US5055803A (en) 1990-12-14 1990-12-14 Parameter tolerant PLL synthesizer

Publications (3)

Publication Number Publication Date
ITRM910930A0 ITRM910930A0 (it) 1991-12-11
ITRM910930A1 true ITRM910930A1 (it) 1993-06-11
IT1250978B IT1250978B (it) 1995-04-24

Family

ID=24519292

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM910930A IT1250978B (it) 1990-12-14 1991-12-11 Sintetizzatore di frequenza pll insensibile a variazioni di parametri.

Country Status (10)

Country Link
US (1) US5055803A (it)
JP (1) JP2844390B2 (it)
AU (1) AU639850B2 (it)
BR (1) BR9106204A (it)
CA (1) CA2071524C (it)
DE (2) DE4193102T (it)
FR (1) FR2671442B1 (it)
GB (1) GB2256984B (it)
IT (1) IT1250978B (it)
WO (1) WO1992010879A1 (it)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2879763B2 (ja) * 1989-06-27 1999-04-05 ソニー株式会社 Ｐｌｌのチャージポンプ回路
US5144156A (en) * 1990-06-15 1992-09-01 Seiko Epson Corporation Phase synchronizing circuit with feedback to control charge pump
US5371480A (en) * 1992-12-04 1994-12-06 Telefonaktiebolaget L M Ericsson Step controlled signal generator
JPH09252249A (ja) * 1996-03-15 1997-09-22 Hitachi Ltd Ｐｌｌ周波数シンセサイザ
US6659295B1 (en) * 1999-03-26 2003-12-09 L&P Property Management Company Adjustable shelving/display system
US6420917B1 (en) * 1999-10-01 2002-07-16 Ericsson Inc. PLL loop filter with switched-capacitor resistor
JP3613787B2 (ja) * 1999-10-18 2005-01-26 日本プレシジョン・サーキッツ株式会社 自己変調型クロック発生回路
FI114886B (fi) * 2001-06-29 2005-01-14 Nokia Corp Menetelmä ja laite taajuussyntetisaattorin tehokkuuden parantamiseksi
US7459964B2 (en) * 2004-03-26 2008-12-02 Panasonic Corporation Switched capacitor filter and feedback system
FR2875972B1 (fr) * 2004-09-30 2006-12-15 St Microelectronics Sa Synthetiseur de frequence a pll
US8248123B2 (en) * 2009-10-29 2012-08-21 Stmicroelectronics Design & Application Gmbh Loop filter

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3740671A (en) * 1972-04-06 1973-06-19 Nasa Filter for third-order phase-locked loops
US4352074A (en) * 1980-02-01 1982-09-28 Westinghouse Electric Corp. Phase-locked loop filter
US4516083A (en) * 1982-05-14 1985-05-07 Motorola, Inc. Fast lock PLL having out of lock detector control of loop filter and divider
US4506232A (en) * 1982-07-19 1985-03-19 Rockwell International Corporation Third order PLL with increased high frequency gain
US4546329A (en) * 1982-09-27 1985-10-08 Motorola, Inc. Frequency synthesizers adaptive loop filter with compensation for transients
US4559505A (en) * 1983-01-04 1985-12-17 Motorola, Inc. Frequency synthesizer with improved priority channel switching
US4855689A (en) * 1987-02-13 1989-08-08 Hughes Aircraft Company Phase lock loop with switchable filter for acquisition and tracking modes
DE3725732C1 (en) * 1987-08-04 1988-12-08 Ant Nachrichtentechnik Gmbh, 7150 Backnang, De PLL with variable oscillator - has control circuit with filter using low cut=off amplifier to attenuate phase noise
US4885553A (en) * 1988-11-30 1989-12-05 Motorola, Inc. Continuously adaptive phase locked loop synthesizer
US4952889A (en) * 1989-04-28 1990-08-28 Motorola, Inc. Loop filter modulated synthesizer

Also Published As

Publication number Publication date
JP2844390B2 (ja) 1999-01-06
IT1250978B (it) 1995-04-24
AU639850B2 (en) 1993-08-05
US5055803A (en) 1991-10-08
GB2256984A (en) 1992-12-23
ITRM910930A0 (it) 1991-12-11
CA2071524A1 (en) 1992-06-15
DE4193102T (it) 1992-12-10
FR2671442A1 (fr) 1992-07-10
GB2256984B (en) 1995-04-19
FR2671442B1 (fr) 1994-02-25
CA2071524C (en) 1996-10-22
AU9148491A (en) 1992-07-08
JPH05505085A (ja) 1993-07-29
BR9106204A (pt) 1993-03-23
WO1992010879A1 (en) 1992-06-25
GB9217114D0 (en) 1992-10-14
DE4193102C2 (de) 1997-12-18

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19961010