JPS57500761A - - Google Patents
Info
- Publication number
- JPS57500761A JPS57500761A JP81501281A JP50128181A JPS57500761A JP S57500761 A JPS57500761 A JP S57500761A JP 81501281 A JP81501281 A JP 81501281A JP 50128181 A JP50128181 A JP 50128181A JP S57500761 A JPS57500761 A JP S57500761A
- Authority
- JP
- Japan
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
- H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
- H03C3/0983—Modifications of modulator for regulating the mean frequency using a phase locked loop containing in the loop a mixer other than for phase detection
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
- H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
- H03C3/0916—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop
- H03C3/0925—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop applying frequency modulation at the divider in the feedback loop
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
- H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
- H03C3/0941—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation at more than one point in the loop
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
- H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
- H03C3/0958—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation by varying the characteristics of the voltage controlled oscillator
-
- 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
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
- H03C2200/0037—Functional aspects of modulators
- H03C2200/005—Modulation sensitivity
- H03C2200/0054—Filtering of the input modulating signal for obtaining a constant sensitivity of frequency modulation
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US1980/000501 WO1981003250A1 (en) | 1980-05-01 | 1980-05-01 | Arrangement for angle modulating a phase-locked loop frequency synthesizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57500761A true JPS57500761A (sv) | 1982-04-30 |
Family
ID=22154314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP81501281A Pending JPS57500761A (sv) | 1980-05-01 | 1980-05-01 |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0050124A4 (sv) |
| JP (1) | JPS57500761A (sv) |
| CA (1) | CA1175922A (sv) |
| DE (1) | DE50124T1 (sv) |
| DK (1) | DK578981A (sv) |
| WO (1) | WO1981003250A1 (sv) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58105631A (ja) * | 1981-12-17 | 1983-06-23 | Nec Corp | 周波数変調送信機 |
| GB2140234B (en) * | 1983-05-17 | 1986-07-23 | Marconi Instruments Ltd | Signal generators |
| US4755774A (en) * | 1985-07-15 | 1988-07-05 | Motorola Inc. | Two-port synthesizer modulation system employing an improved reference phase modulator |
| DE8712331U1 (de) * | 1986-09-26 | 1988-01-28 | Flowtec AG, Reinach, Basel | Corioliskraft-Massendurchflussmesser |
| DE19601013A1 (de) * | 1996-01-13 | 1997-07-17 | Bosch Gmbh Robert | Verfahren und Anordnung zur Frequenzmodulation eines hochfrequenten Signals |
| FR2798019B1 (fr) | 1999-08-26 | 2002-08-16 | Cit Alcatel | Synthetiseur de frequences a boucle de phase |
| GB2389252B (en) | 2002-05-31 | 2006-09-27 | Zarlink Semiconductor Ltd | A frequency modulation system & method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3593182A (en) * | 1969-04-16 | 1971-07-13 | Motorola Inc | Afc system for microwave energy sources |
| US3622913A (en) * | 1969-10-29 | 1971-11-23 | Rca Corp | Frequency modulated phase-locked oscillator having a low- and high-frequency response |
| US3805192A (en) * | 1972-08-09 | 1974-04-16 | Electronic Communications | Frequency modulator-variable frequency generator |
| DE2914814A1 (de) * | 1979-04-11 | 1980-10-30 | Siemens Ag | Frequenzmodulator |
-
1980
- 1980-05-01 EP EP19810900873 patent/EP0050124A4/en not_active Withdrawn
- 1980-05-01 WO PCT/US1980/000501 patent/WO1981003250A1/en not_active Application Discontinuation
- 1980-05-01 DE DE198181900873T patent/DE50124T1/de active Pending
- 1980-05-01 JP JP81501281A patent/JPS57500761A/ja active Pending
-
1981
- 1981-05-01 CA CA000376670A patent/CA1175922A/en not_active Expired
- 1981-12-28 DK DK578981A patent/DK578981A/da not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0050124A1 (en) | 1982-04-28 |
| WO1981003250A1 (en) | 1981-11-12 |
| DE50124T1 (de) | 1983-01-05 |
| DK578981A (da) | 1981-12-28 |
| CA1175922A (en) | 1984-10-09 |
| EP0050124A4 (en) | 1982-09-03 |