RU2003124C1 - Device for measurement of spectral density of power of amplitude-modulated noises of shf generators - Google Patents
Device for measurement of spectral density of power of amplitude-modulated noises of shf generatorsInfo
- Publication number
- RU2003124C1 RU2003124C1 SU4951472A RU2003124C1 RU 2003124 C1 RU2003124 C1 RU 2003124C1 SU 4951472 A SU4951472 A SU 4951472A RU 2003124 C1 RU2003124 C1 RU 2003124C1
- Authority
- RU
- Russia
- Prior art keywords
- generators
- noises
- modulated
- amplitude
- power
- Prior art date
Links
- 230000003595 spectral effect Effects 0.000 title claims 2
- 238000005259 measurement Methods 0.000 title description 5
- 238000001228 spectrum Methods 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Description
ды смесител в виде принимаемого сигнала в фазе, поэтому все шумы преобразуютс в промежуточную частоту, затем усиливаютс УПЧ и поступают на анализатор спектра. КЗ поршень поочередно настраиваетс на минимум {дл калибровки и учета собственного шума установки} и максимум (дл измерени ) выходного шума на промежуточной частоте. При настройке КЗ поршн на минимум выходного шума диоды смесител располагаютс Б минимуме сто чей волны и отраженна мощность практически не преобразуетс в промежуточную частоту. Так как источником и гетеродинной мощности , и принимаемого сигнала служит один и тотжеисточник(исследуемыйгенератор},то вли ние частотных шумов не сказываетс на результаты измерени до частот анализа примерно 30 ГГц. В силу малости измер емого сигнала по сравнению с сигналом гетеродина токи и токовые шумы смесительных диодов практически неизменны при любых положени х КЗ поршн .mixer in the form of a received signal in phase, so all the noise is converted to an intermediate frequency, then amplified by the IF amplifier and fed to the spectrum analyzer. The short-circuit piston is alternately tuned to a minimum {to calibrate and account for the intrinsic noise of the installation} and a maximum (to measure) the output noise at an intermediate frequency. When setting the short circuit of the piston to a minimum of output noise, the mixer diodes are located at a minimum of a standing wave and the reflected power is practically not converted to an intermediate frequency. Since the source of both the heterodyne power and the received signal is the same source (generator under study}, the influence of frequency noise does not affect the measurement results up to the analysis frequencies of approximately 30 GHz. mixing diodes are practically unchanged at any position of the short circuit piston.
Применение предложенного технического решени позвол ет измер ть СПМ АМШ генераторов с помощью достаточно простого устройства и более точно по сравнению с прототипом, не тер в чувствительности .The application of the proposed technical solution makes it possible to measure the PSD of AMS generators using a rather simple device and, more accurately in comparison with the prototype, does not lose sensitivity.
Данное техническое решение проверено экспериментально при исследовании СПМ АМШ генераторов на диоде Ганна ко0This technical solution was tested experimentally in the study of SPM AMS generators on the Gunn diode ko0
55
00
55
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ротковолновой части КВЧ-диапазона с выходной мощностью 10-20 мВт. Измерени проводились с помощью балансного смесител , имеющего двухполюсный коэффициент шума менее 8 дБ при отстройке от несущий на 100-1000 МГц. 5 качестве УПЧ использовалс встроенный в смеситель предварительный усилитель промежуточной частоты с полосой 0,1-2 ГГц, в качестве спектроэнализатора - измерительный приемник П5-25. Чувствительность измерени СПМ АМШ генераторов составила - 170 дБ/Гц при погрешности не более 2 дБ. При иепоЯьзоаании тех же самых приборов в устройстве-прототипе (без применени специальных схем стабилизации) точность измерений ухудшаетс на 2-3 дБ.the microwave part of the EHF range with an output power of 10-20 mW. The measurements were carried out using a balanced mixer having a bipolar noise figure of less than 8 dB when offset from the carrier at 100-1000 MHz. 5 as an IF amplifier, an intermediate frequency preamplifier integrated in the mixer with a band of 0.1-2 GHz was used, and a measuring receiver P5-25 was used as a spectrum analyzer. The sensitivity of the measurement of the PSD of AMS generators was 170 dB / Hz with an error of not more than 2 dB. When using the same devices in the prototype device (without the use of special stabilization schemes), the accuracy of measurements deteriorates by 2-3 dB.
Положительный эффект от применени предложенной конструкции измерительного устройства состоит в повышении точности , упрощении и удешевлении схемы и увеличении ее производительности,The positive effect of the application of the proposed design of the measuring device is to increase the accuracy, simplify and reduce the cost of the circuit and increase its productivity,
(56) Корнилов С.А, Спектрально-коррел ционные методы измерени флуктуационной нестабильности Непрерывных СВЧ-колеба- ний. Обзоры по электронной технике, сери 1 Электроника СВЧ, вып. 8(471), 1977.(56) S. Kornilov, Spectral-correlation methods for measuring fluctuation instability of Continuous Microwave Oscillations. Reviews on Electronic Engineering, Series 1 Microwave Electronics, vol. 8 (471), 1977.
Корнилов С.А., Саеши некий В.А., Уман С.Д. Шумы клистронных генераторов малой мощности. М.: Советское радио, 1972.Kornilov S.A., Saeshi a certain V.A., Uman S.D. Noises of low power klystron generators. M .: Soviet Radio, 1972.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU4951472 RU2003124C1 (en) | 1991-06-28 | 1991-06-28 | Device for measurement of spectral density of power of amplitude-modulated noises of shf generators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU4951472 RU2003124C1 (en) | 1991-06-28 | 1991-06-28 | Device for measurement of spectral density of power of amplitude-modulated noises of shf generators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RU2003124C1 true RU2003124C1 (en) | 1993-11-15 |
Family
ID=21582434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU4951472 RU2003124C1 (en) | 1991-06-28 | 1991-06-28 | Device for measurement of spectral density of power of amplitude-modulated noises of shf generators |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2003124C1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2367967C1 (en) * | 2008-04-14 | 2009-09-20 | Учреждение образования Белорусский государственный университет информатики и радиоэлектроники | Metre of signals fluctuation in active devices of millimetre range of wave lengths |
-
1991
- 1991-06-28 RU SU4951472 patent/RU2003124C1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2367967C1 (en) * | 2008-04-14 | 2009-09-20 | Учреждение образования Белорусский государственный университет информатики и радиоэлектроники | Metre of signals fluctuation in active devices of millimetre range of wave lengths |
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