SU661390A1 - Frequency deviation measuring arrangement - Google Patents
Frequency deviation measuring arrangementInfo
- Publication number
- SU661390A1 SU661390A1 SU772478778A SU2478778A SU661390A1 SU 661390 A1 SU661390 A1 SU 661390A1 SU 772478778 A SU772478778 A SU 772478778A SU 2478778 A SU2478778 A SU 2478778A SU 661390 A1 SU661390 A1 SU 661390A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- frequency deviation
- measuring arrangement
- deviation measuring
- measuring
- input
- Prior art date
Links
Landscapes
- Measuring Frequencies, Analyzing Spectra (AREA)
Description
Данное изобретение относитс к области радиоте.хники и может быть использовано в различных радиотехнических измерительных устройствах, предназначенных дл непосредственных измерений девиации ЧМ-сигналов с целью, например, настройки и регулировки радиоаппаратуры, ее адаптации при работе.This invention relates to the field of radio engineering. It can be used in various radio engineering measuring devices designed to directly measure the deviation of FM signals, for example, to tune and adjust radio equipment, to adapt it during operation.
Известно устройство дл измерени девиации частоты методом исчезающей несущей (по нул м функции Бессел ), которое содержит схему двойного преобразовани частоты, амплитудный детектор, индикатор 1.A device is known for measuring the frequency deviation by the vanishing carrier method (based on the zeroes of the Bessel function), which contains a double frequency conversion circuit, an amplitude detector, an indicator 1.
Недостатком устройства вл етс необходи .мость построени модул ционной характеристики , что увеличивает врем измерени и снижает точность.The drawback of the device is the need to build a modulation characteristic, which increases the measurement time and reduces accuracy.
Известно также устройство, содержащее фазовый детектор, сигнал на входы которого подаетс непосредственно и через линию задержки 2.It is also known a device comprising a phase detector, the signal to the inputs of which is fed directly and through the delay line 2.
Недостаток устройства состоит в том, что информаци о девиации частоты вырабатываетс дискретно. В результате при приеме сигнала с переменной девиацией частоты устройство будет вырабатывать информацию с ошибкой дискретности, что снижает точность измерени девиации частоты.The drawback of the device is that the information on the frequency deviation is generated discretely. As a result, when receiving a signal with variable frequency deviation, the device will produce information with a discrete error, which reduces the accuracy of frequency deviation measurement.
Целью изобретени вл етс повышениеточности измерени девиации частоты.The aim of the invention is to improve the accuracy of measuring frequency deviation.
Данна цель достигаетс тем, что в устройство дл измерени девиации частоты, содержа цее фазовый детектор, линию задержки , индикатор, введены фазовращатель, интегратор, вычитающий блок, два усилител , два амплитудных детектора и два пиковых детектора, выходы которых через вычитаю1ций блок подключены ко входу интегратора , выход которого соединен со входом индикатора и с управл ющим входом линии задержки, а входы пиковых детекторов через соответствующие последовательно соединенные амплитудные детекторы и усилители подключены к выходу фазового детектора, второй вход которого соединен с выходом фазовращател , вход которого соединен с источником сигнала.This goal is achieved by the fact that a phase shifter, an integrator, a subtractor unit, two amplifiers, two amplitude detectors and two peak detectors, the outputs of which are connected to the input through the subtractors, are connected to the device for measuring the frequency deviation, containing the phase detector, delay line, indicator. an integrator whose output is connected to the input of the indicator and to the control input of the delay line, and the inputs of the peak detectors are connected to the output via appropriately connected amplitude detectors and amplifiers at a phase detector, a second input coupled to an output phase shifter having an input coupled to the signal source.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772478778A SU661390A1 (en) | 1977-04-26 | 1977-04-26 | Frequency deviation measuring arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772478778A SU661390A1 (en) | 1977-04-26 | 1977-04-26 | Frequency deviation measuring arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU661390A1 true SU661390A1 (en) | 1979-05-05 |
Family
ID=20706061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU772478778A SU661390A1 (en) | 1977-04-26 | 1977-04-26 | Frequency deviation measuring arrangement |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU661390A1 (en) |
-
1977
- 1977-04-26 SU SU772478778A patent/SU661390A1/en active
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