SU896747A1 - Phase modulator - Google Patents
Phase modulator Download PDFInfo
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- SU896747A1 SU896747A1 SU802903119A SU2903119A SU896747A1 SU 896747 A1 SU896747 A1 SU 896747A1 SU 802903119 A SU802903119 A SU 802903119A SU 2903119 A SU2903119 A SU 2903119A SU 896747 A1 SU896747 A1 SU 896747A1
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- SU
- USSR - Soviet Union
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- output
- phase
- signal
- input
- modulating signal
- Prior art date
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- Amplitude Modulation (AREA)
- Transmitters (AREA)
Description
(S) ФАЗОВЫЙ МОДУЛЯТОР(S) PHASE MODULATOR
. I. I
Изобретение относитс к радиотехнике и может использоватьс дл формировани модулированных по фазе сигналов, например, в радиопередающих устройствах.The invention relates to radio engineering and can be used to generate phase-modulated signals, for example, in radio transmitting devices.
Известен фазовый модул тор, содержаций первый, второй и третий колебательные контуры с управл емыми реактивност ми последовательно соединенные через соответствующие элементы св зи, при этом к первому колебательному контуру с упра&л емой реактивностью подключен выход первого разв зывающего элемента, вход которого вл етс входом модулируемого сигнала, а все управл емые реактивности через соответствующие разв зывающие элементы соединены с выходом источника модулирующего сигнала и с источником посто нного смещени {1.The phase modulator is known, containing the first, second and third oscillatory circuits with controllable reactivities connected in series through the appropriate coupling elements, while the output of the first decoupling element, the input of which is input to the first oscillation circuit with controllable reactivity, is connected. the modulated signal, and all controlled reactivity through the corresponding isolating elements are connected to the output of the source of the modulating signal and to the constant displacement source {1.
Однако известный фазовый .модул тор не обеспечивает достаточной и4нейности модул ционной характеристи .ки, поскольку при использовании вHowever, the well-known phase modulator does not provide a sufficiently 4nevenness of modulation characteristic, because, when used in
нем трех св занных контуров его фазо-частотна характеристика (ФЧХ) при некотором значении частоты входного сигнала имеет скачок на JT рад, после чего она измен етс монотомно. Из-за этого скачка ФЧХ имеет ступенчатый излом примерно в середине линейного участка, а следовательно, при трех св занных контурах прот женность линейного участка равна For three coupled circuits, its phase-frequency characteristic (phase response) at a certain frequency of the input signal has a jump in the JT rad, after which it varies monotomically. Because of this jump, the phase response has a stepped fracture approximately in the middle of the linear section, and therefore, with three connected circuits, the linear section is equal to
10 не ЗГ рад, а iJT/Z, как при двух св занных контурах.10 is not ZG pleased, but iJT / Z, as in the case of two coupled circuits.
Цель изобретени - повышение линейности модул ционной характеристики .The purpose of the invention is to increase the linearity of the modulation characteristic.
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Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802903119A SU896747A1 (en) | 1980-03-31 | 1980-03-31 | Phase modulator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802903119A SU896747A1 (en) | 1980-03-31 | 1980-03-31 | Phase modulator |
Publications (1)
Publication Number | Publication Date |
---|---|
SU896747A1 true SU896747A1 (en) | 1982-01-07 |
Family
ID=20886701
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU802903119A SU896747A1 (en) | 1980-03-31 | 1980-03-31 | Phase modulator |
Country Status (1)
Country | Link |
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SU (1) | SU896747A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007030864A1 (en) * | 2005-09-12 | 2007-03-22 | Magellan Technology Pty Ltd | A method and apparatus adapted to transmit data |
-
1980
- 1980-03-31 SU SU802903119A patent/SU896747A1/en active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007030864A1 (en) * | 2005-09-12 | 2007-03-22 | Magellan Technology Pty Ltd | A method and apparatus adapted to transmit data |
US8417195B2 (en) | 2005-09-12 | 2013-04-09 | Magellan Technology Pty Limited | Method and apparatus adapted to transmit data |
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