IT984355B - Sintetizzatore di frequenza - Google Patents
Sintetizzatore di frequenzaInfo
- Publication number
- IT984355B IT984355B IT67240/73A IT6724073A IT984355B IT 984355 B IT984355 B IT 984355B IT 67240/73 A IT67240/73 A IT 67240/73A IT 6724073 A IT6724073 A IT 6724073A IT 984355 B IT984355 B IT 984355B
- Authority
- IT
- Italy
- Prior art keywords
- frequency synthesizer
- synthesizer
- frequency
- Prior art date
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
- 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
- H03L7/187—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 means for coarse tuning the voltage controlled oscillator of the loop
- H03L7/189—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 means for coarse tuning the voltage controlled oscillator of the loop comprising a D/A converter for generating a coarse tuning voltage
-
- 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
- H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
- H03L7/113—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using frequency discriminator
-
- 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
- H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
- H03L7/12—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a scanning signal
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7204105A FR2170908B1 (it) | 1972-02-08 | 1972-02-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT984355B true IT984355B (it) | 1974-11-20 |
Family
ID=9093143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT67240/73A IT984355B (it) | 1972-02-08 | 1973-02-05 | Sintetizzatore di frequenza |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US3825855A (it) |
| JP (1) | JPS4889661A (it) |
| BE (1) | BE795045A (it) |
| CA (1) | CA977841A (it) |
| DE (1) | DE2305847B2 (it) |
| FR (1) | FR2170908B1 (it) |
| GB (1) | GB1388071A (it) |
| IT (1) | IT984355B (it) |
| NL (1) | NL7301576A (it) |
| NO (1) | NO133051C (it) |
| SE (1) | SE385642B (it) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1456453A (en) * | 1974-01-31 | 1976-11-24 | Ibm | Phase locked oscillators |
| US3921095A (en) * | 1974-11-14 | 1975-11-18 | Hewlett Packard Co | Startable phase-locked loop oscillator |
| US4009448A (en) * | 1976-01-06 | 1977-02-22 | Westinghouse Electric Corporation | Phase lock loop for a voltage controlled oscillator |
| US4083015A (en) * | 1976-04-21 | 1978-04-04 | Westinghouse Electric Corporation | Fast switching phase lock loop system |
| US4069462A (en) * | 1976-12-13 | 1978-01-17 | Data General Corporation | Phase-locked loops |
| US4151485A (en) * | 1977-11-21 | 1979-04-24 | Rockwell International Corporation | Digital clock recovery circuit |
| US4251779A (en) * | 1978-02-21 | 1981-02-17 | Picker Corporation | Frequency synthesizer apparatus and method in ultrasonic imaging |
| FR2426358A1 (fr) * | 1978-05-17 | 1979-12-14 | Trt Telecom Radio Electr | Synthetiseur de frequence a division directe a pas apres virgule |
| US4272729A (en) * | 1979-05-10 | 1981-06-09 | Harris Corporation | Automatic pretuning of a voltage controlled oscillator in a frequency synthesizer using successive approximation |
| US4280104A (en) * | 1979-08-10 | 1981-07-21 | Matsushita Electric Corporation Of America | Phase locked loop system with improved acquisition |
| US4339731A (en) * | 1980-06-05 | 1982-07-13 | Rockwell International Corporation | Stable, fast slew, phase locked loop |
| FR2513458A1 (fr) * | 1981-09-23 | 1983-03-25 | Trt Telecom Radio Electr | Procede de gestion des commandes de frequence d'un poste emetteur-recepteur et de la programmation du compteur programmable de son synthetiseur numerique de frequence |
| FR2514968A1 (fr) * | 1981-10-16 | 1983-04-22 | Trt Telecom Radio Electr | Synthetiseur de frequence a accord rapide |
| US4593287A (en) * | 1982-09-30 | 1986-06-03 | The Boeing Company | FM/CW sweep linearizer and method therefor |
| US4580107A (en) * | 1984-06-06 | 1986-04-01 | The United States Of America As Represented By The Secretary Of The Air Force | Phase lock acquisition system having FLL for coarse tuning and PLL for fine tuning |
| US5331292A (en) * | 1992-07-16 | 1994-07-19 | National Semiconductor Corporation | Autoranging phase-lock-loop circuit |
| US5302916A (en) * | 1992-12-21 | 1994-04-12 | At&T Bell Laboratories | Wide range digital frequency detector |
| US5546025A (en) * | 1994-03-11 | 1996-08-13 | Mitel, Inc. | Low frequency discrimator using upper and lower thresholds |
| JP3367465B2 (ja) * | 1999-05-13 | 2003-01-14 | 日本電気株式会社 | 発振周波数調整装置 |
| CN113541915B (zh) * | 2021-06-11 | 2024-04-16 | 珠海亿智电子科技有限公司 | 一种宽动态范围的快速时钟恢复实现方法及装置 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3293572A (en) * | 1964-06-26 | 1966-12-20 | Devenco Inc | Electrically variable resonant circuit controlled by the frequency of a separate pilot input signal |
| US3611175A (en) * | 1970-03-26 | 1971-10-05 | Sylvania Electric Prod | Search circuit for frequency synthesizer |
-
0
- BE BE795045D patent/BE795045A/xx unknown
-
1972
- 1972-02-08 FR FR7204105A patent/FR2170908B1/fr not_active Expired
-
1973
- 1973-02-05 IT IT67240/73A patent/IT984355B/it active
- 1973-02-05 NO NO457/73A patent/NO133051C/no unknown
- 1973-02-05 SE SE7301550A patent/SE385642B/xx unknown
- 1973-02-05 NL NL7301576A patent/NL7301576A/xx active Search and Examination
- 1973-02-06 GB GB583573A patent/GB1388071A/en not_active Expired
- 1973-02-06 US US00330005A patent/US3825855A/en not_active Expired - Lifetime
- 1973-02-07 CA CA163,464A patent/CA977841A/en not_active Expired
- 1973-02-07 DE DE19732305847 patent/DE2305847B2/de active Granted
- 1973-02-08 JP JP48015251A patent/JPS4889661A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| NO133051B (it) | 1975-11-17 |
| JPS4889661A (it) | 1973-11-22 |
| DE2305847A1 (de) | 1973-08-16 |
| FR2170908B1 (it) | 1976-07-23 |
| GB1388071A (en) | 1975-03-19 |
| US3825855A (en) | 1974-07-23 |
| SE385642B (sv) | 1976-07-12 |
| NO133051C (it) | 1976-02-25 |
| DE2305847B2 (de) | 1976-10-28 |
| NL7301576A (it) | 1973-08-10 |
| BE795045A (nl) | 1973-08-06 |
| FR2170908A1 (it) | 1973-09-21 |
| CA977841A (en) | 1975-11-11 |
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