ES448800A1 - A system of multiplex transmission by frequency carriers. (Machine-translation by Google Translate, not legally binding) - Google Patents
A system of multiplex transmission by frequency carriers. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES448800A1 ES448800A1 ES448800A ES448800A ES448800A1 ES 448800 A1 ES448800 A1 ES 448800A1 ES 448800 A ES448800 A ES 448800A ES 448800 A ES448800 A ES 448800A ES 448800 A1 ES448800 A1 ES 448800A1
- Authority
- ES
- Spain
- Prior art keywords
- frequency
- signals
- signal
- translation
- band
- Prior art date
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/04—Frequency-transposition arrangements
- H04J1/045—Filters applied to frequency transposition
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Noise Elimination (AREA)
- Radio Relay Systems (AREA)
Abstract
A multiplex transmission system for carrier frequencies with a transmission part and a reception part, the transmission part including several sources of first signals, several sources of second signals and, at least, a third signal source; frequency multiplexing and translating elements for translating and multiplexing the first and second frequency bands of the first and second signals to the multiplexed third and fourth frequency bands, respectively, in such a way that the fourth frequency bands of the second signals thus translators are out of band respectively to the bands of third frequencies of the first signals thus translated; elements for combining the signals thus translated and multiplexed with said third signal having a frequency that is out of band with respect to the third frequency bands of the first signals but which is within the fourth frequency band of a certain one of the second signals transladadas; and filter elements to prevent interference between the third signal and said second determined translational signal, characterized in that the filter elements (lpf2,6) are located in the lower frequency portion of the frequency multiplexing and translating elements to suppress, so minus the frequency component (95 hz, 3920 hz) which, after translation, would be part of the fourth frequency band (84-88 khz) of said second translated signal and would have substantially the same frequency (84.08) khz) than the third signal. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7506989A NL7506989A (en) | 1975-06-12 | 1975-06-12 | Multiplex carrier wave transmission system - has three signal groups and filter suppressing lower ends of converter and multiplexer bands |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES448800A1 true ES448800A1 (en) | 1977-08-01 |
Family
ID=19823942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES448800A Expired ES448800A1 (en) | 1975-06-12 | 1976-06-11 | A system of multiplex transmission by frequency carriers. (Machine-translation by Google Translate, not legally binding) |
Country Status (6)
| Country | Link |
|---|---|
| AU (1) | AU500050B2 (en) |
| BE (1) | BE842523A (en) |
| BR (1) | BR7603680A (en) |
| ES (1) | ES448800A1 (en) |
| NL (1) | NL7506989A (en) |
| SE (1) | SE419019B (en) |
-
1975
- 1975-06-12 NL NL7506989A patent/NL7506989A/en not_active Application Discontinuation
-
1976
- 1976-06-03 AU AU14595/76A patent/AU500050B2/en not_active Expired
- 1976-06-03 BE BE2055087A patent/BE842523A/en unknown
- 1976-06-09 BR BR7603680A patent/BR7603680A/en unknown
- 1976-06-11 ES ES448800A patent/ES448800A1/en not_active Expired
- 1976-06-11 SE SE7606616A patent/SE419019B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SE419019B (en) | 1981-07-06 |
| BE842523A (en) | 1976-12-03 |
| NL7506989A (en) | 1976-12-14 |
| BR7603680A (en) | 1977-02-01 |
| AU1459576A (en) | 1977-12-08 |
| AU500050B2 (en) | 1979-05-10 |
| SE7606616L (en) | 1976-12-13 |
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