BG39300A3 - Frequency synthesizer for generating of control and carrying frequencies - Google Patents
Frequency synthesizer for generating of control and carrying frequenciesInfo
- Publication number
- BG39300A3 BG39300A3 BG045446A BG4544679A BG39300A3 BG 39300 A3 BG39300 A3 BG 39300A3 BG 045446 A BG045446 A BG 045446A BG 4544679 A BG4544679 A BG 4544679A BG 39300 A3 BG39300 A3 BG 39300A3
- Authority
- BG
- Bulgaria
- Prior art keywords
- synthesizer
- output
- input
- knz
- signal
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B21/00—Generation of oscillations by combining unmodulated signals of different frequencies
- H03B21/01—Generation of oscillations by combining unmodulated signals of different frequencies by beating unmodulated signals of different frequencies
- H03B21/02—Generation of oscillations by combining unmodulated signals of different frequencies by beating unmodulated signals of different frequencies by plural beating, i.e. for frequency synthesis ; Beating in combination with multiplication or division of frequency
- H03B21/025—Generation of oscillations by combining unmodulated signals of different frequencies by beating unmodulated signals of different frequencies by plural beating, i.e. for frequency synthesis ; Beating in combination with multiplication or division of frequency by repeated mixing in combination with division of frequency only
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Transmitters (AREA)
- Superheterodyne Receivers (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Radio Relay Systems (AREA)
Abstract
Честотен синтезатор за генериране на управляващи сигнали и носещи честоти, съдържащ на изхода си помощен синтезатор, генериращ помощни сигнали, и има поне един сигнален синтезатор, генериращ на единия си изход управляващи сигнали, а на втория си изход носеща честота, която е с 12,08 кнz по-малка от честотата на управляващите сигнали, като синтезаторите са свързани един с друг посредством първите си входове, подаващи основни сигнали, и имат лентови филтри, модулатори, усилватели и целесъобразно подбрани делители на честота, като вторият вход на сигналните синтезатори е свързан с изхода на помощния синтезатор, характеризиращ се с това, че входът на помощния синтезатор е свързан в общата точка на два входящи лентови филтъра, избиращи от основен сигнал, състоящ се от хармонична основна синусоида с честота 8 кнz и нейните нечетни многократни сигнали с честота 104 кнz и 168 кнz, при това изходните точки на входящите лентови филтри са свързани със схема за генериране на изходните сигнали с честота 12,08 кнz на помощния синтезатор, а сигналните синтезатори съдържат схема на филтър, генерираща носещата честота, и схема на интезатор, генерираща управляващите сигнали съответно с честота 84,08 кнz, 84,14 кнz и 104,08 кнz, като схемата на филтъра съдържа лентов филтър и нейният вход е свързан с първия вход на сигналния синтезатор, а нейният изход е свързан с изхода на сигналния синтезатор, подаващ генерирана от основния сигнал носеща честота, докато входът на схемата на синтезатора е включен към втория вход на сигналния синтезатор, като схемата на синтезатора съдържа модулатор, от чиито входове един е свързан с втория вход на сигналния синтезатор, друг с изхода на схемата на филтъра, и схемата на синтезатора е включена между изхода на модулатора и първия изход на сигналния синтезатор. Патентните претенции са формулирани в 3 точки.A frequency synthesizer for generating control signals and carrier frequencies, comprising at its output an auxiliary synthesizer generating auxiliary signals, and having at least one signal synthesizer generating at one output control signals and at its second output a carrier frequency that is 12, 08 knz less than the frequency of the control signals, the synthesizers are connected to each other through their first inputs providing fundamental signals and have bandpass filters, modulators, amplifiers and appropriately selected frequency dividers, the second input of the signal synthesizers is connected with the output of the auxiliary synthesizer, characterized in that the input of the auxiliary synthesizer is connected at the common point of two input bandpass filters selecting a fundamental signal consisting of a harmonic fundamental sine wave of frequency 8 knz and its odd multiples of frequency 104 knz and 168 knz, wherein the output points of the input bandpass filters are connected to a circuit for generating the 12.08 knz output signals of the auxiliary synthesizer, and the signal synthesizers contain a filter circuit generating the carrier frequency and an integrator circuit generating the control signals with a frequency of 84.08 knz, 84.14 knz and 104.08 knz respectively, the filter circuit comprising a band pass filter and its input is connected to the first input of the signal synthesizer and its output is connected to the output of the signal synthesizer, supplying a carrier frequency generated from the main signal while the input of the synthesizer circuit is connected to the second input of the signal synthesizer, the synthesizer circuit comprising a modulator, one of whose inputs is connected to the second input of the signal synthesizer, another to the output of the filter circuit , and the synthesizer circuit is included between the output of the modulator and the first output of the signal synthesizer. The patent claims are formulated in 3 points.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HUTE000919 HU177519B (en) | 1978-12-22 | 1978-12-22 | Frequency synthetiser for generating pilot signals and subcarriers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BG39300A3 true BG39300A3 (en) | 1986-05-15 |
Family
ID=11002089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BG045446A BG39300A3 (en) | 1978-12-22 | 1979-11-09 | Frequency synthesizer for generating of control and carrying frequencies |
Country Status (8)
| Country | Link |
|---|---|
| BG (1) | BG39300A3 (en) |
| DD (1) | DD148131A5 (en) |
| DE (1) | DE2945987C2 (en) |
| FR (1) | FR2445063A1 (en) |
| GB (1) | GB2039441B (en) |
| HU (1) | HU177519B (en) |
| PL (1) | PL125237B1 (en) |
| RO (1) | RO76970A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HU191731B (en) * | 1984-12-19 | 1987-04-28 | Telefongyar | Circuit arrangement for generating system carrier, line pilot and channel carrier-control frequencies of multichannel open cable telephon equipments |
| ES2064746T3 (en) * | 1989-07-20 | 1995-02-01 | Scientific Atlanta | SUB-CARRIER MULTIPLICATION METHOD THAT PRESERVES THE AM INFORMATION IN THE FM SYSTEMS. |
| DE19811550C2 (en) * | 1998-03-18 | 2002-06-27 | Bosch Gmbh Robert | Method and circuit arrangement for generating frequency signals |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD68253A (en) * | ||||
| GB780152A (en) * | 1955-11-28 | 1957-07-31 | Standard Telephones Cables Ltd | Improvements in or relating to carrier wave generators |
| GB961028A (en) * | 1960-01-14 | 1964-06-17 | Plessey Co Ltd | Improvements in frequency synthesis apparatus |
| DE1260546B (en) * | 1964-08-26 | 1968-02-08 | Siemens Ag | Arrangement for generating the pilot frequencies in carrier frequency systems |
| DE1762627B2 (en) * | 1968-07-23 | 1971-02-18 | METHOD OF DERIVING THE CHANNEL CARRIER FREQUENCY FROM 112 TO 156 KHZ FOR A PRE-MODULATION CARRIER FREQUENCY SYSTEM | |
| GB1337166A (en) * | 1971-10-28 | 1973-11-14 | Marconi Co Ltd | Frequency generators |
-
1978
- 1978-12-22 HU HUTE000919 patent/HU177519B/en not_active IP Right Cessation
-
1979
- 1979-11-09 BG BG045446A patent/BG39300A3/en unknown
- 1979-11-14 DE DE19792945987 patent/DE2945987C2/en not_active Expired
- 1979-12-11 PL PL22032279A patent/PL125237B1/en unknown
- 1979-12-18 GB GB7943489A patent/GB2039441B/en not_active Expired
- 1979-12-19 RO RO7999610A patent/RO76970A/en unknown
- 1979-12-20 DD DD21794379A patent/DD148131A5/en unknown
- 1979-12-20 FR FR7931284A patent/FR2445063A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DD148131A5 (en) | 1981-05-06 |
| FR2445063B1 (en) | 1983-04-22 |
| GB2039441B (en) | 1983-03-23 |
| FR2445063A1 (en) | 1980-07-18 |
| DE2945987A1 (en) | 1980-06-26 |
| DE2945987C2 (en) | 1985-01-17 |
| PL220322A1 (en) | 1980-09-22 |
| RO76970A (en) | 1981-06-22 |
| PL125237B1 (en) | 1983-04-30 |
| HU177519B (en) | 1981-10-28 |
| GB2039441A (en) | 1980-08-06 |
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