SU1219974A1 - Apparatus for measuring pulse power - Google Patents

Abstract

This invention relates to electrical measuring technology. It can be used in the construction of microwave pulse power meters, for example, the output power of magnetron generators. The purpose of the invention is to increase the measurement accuracy by introducing into the device an average current sensor 2, two quadrants 3 and 4, and one dividing unit 6. In addition, the device contains an average power sensor 1, indicators 5 and 8, dividing unit 7, analog digital converters 11 and 12. Quad 4 is made in the form of series-connected detector 9 and amplifier 10. Cp. f-ly .. 1 Il. with s

Description

. one

The invention relates to electrical measuring equipment and can be used in the construction of microwave pulse power meters, for example, the output power of magnetron generators.

The purpose of the invention is to increase the measurement accuracy.

The drawing shows a functional diagram of the device.

The device contains a medium power sensor 1, a medium current sensor 2, quadrants 3 and 4, an indicator 5, separator blocks 6 and 7, and an indicator 8.

Sensor 1 is made in the form of a coaxial, thermoelectric power sensor with. indirect heating, sensor 2 in the form of a charge sensor, and quadrant A in the form of a detector 9 with a quadratic characteristic and amplifier 10 in series. Quad 3 and dividing blocks

6 and 7 are made on a digital element base, as a result of which the device contains analog-to-digital converters 11 and 12.

The input of the 1I converter is connected to the output of sensor 1, and the output to the input of the divider of the dividing unit

7 and through the quad 3 - to the input of the divisible dividing unit 6, the divider input of which is connected to the input of the divisible dividing unit 7 and through serially connected analog-to-digital converter 12, amplifier 10 and detector 9th output of sensor 2. The outputs of dividing units 6 and 7 are connected with inputs of indicators 5 and 8, respectively.

The device works as follows.

The pulse whose power is measured is fed to the input of sensor 1. Information about the average power of the pulse from the output of sensor 1 is converted in the analog-digital converter 11 into a digital form of the signal which is fed to the input of the quadrant 3. From the output of the quadrant 3 signal. In digital form proportional to the square of the average power of the measured pulse, is fed to the input of the dividing unit 6. The test pulse is also fed to the input of sensor 2. From its output, the average current information goes to the input of the detector. 9 with quadratic characterization 10

15

I2I9974

from its input to the input of amplifier 10. The amplified signal is fed to the input of analog-digital converter 12 ,. where converts- from to digital form. In the splitter unit 6, the digital signals are divided: received at its input from the quadrant 3 by the input from the analog-digital converter 12. Its relation to this ratio, having a sense of the power of the equivalent rectangular pulse, is displayed on the indicator 5. The separating unit 7 determines the value from - the value of the signal received from the analog-to-digital converter 12, is calculated by the value of the signal received from the analog-to-digital converter 11 and is proportional to the average power of the pulse under study. The magnitude of this ratio is the duration of an equivalent rectangular pulse, the value of which is displayed on the indicator 8.

The devices works as follows ..

The impulse power value is the amplitude of an equivalent rectangular pulse of duration 6, having the same power as the real impulse. The equality of the average powers of the equivalent and measurable pulses is not yet sufficient to determine the power, since it can be equal; - different values of P and t are cranked. An essential additional condition is the equality of the charges of the equivalent and studied pulses.

20

25

thirty

35

40

45

Indicated

equality as follows:

PR (t) dt jl P (t) dt;

 C

i (t) dt j i, (t) dt.

oh oh

3 records with

(12)

50

55

By designating the expressions for average power and charge, respectively, through A and B, and taking into account these designations and the rectangular shape equivalent to c pulse, we get

А p (t) dt ГР (t) dt P, t ,;

(3)

 L, (t) dt J

i, (t) dt

five

Indicated

equality as follows:

PR (t) dt jl P (t) dt;

 C

i (t) dt j i, (t) dt.

oh oh

3 records with

(12)

By designating the expressions for average power and charge, respectively, through A and B, and taking into account these designations and the rectangular shape equivalent to c pulse, we get

А p (t) dt ГР (t) dt P, t ,;

(3)

 L, (t) dt J

i, (t) dt

By reciprocal arithmetic transformations of expressions (3) and (4), formulas are derived for determining the values, impulse MOTS, and the long term of the equivalent impulse. but

BUT

 R

(5) (6)

The proposed device is more precisely known by taking into account the condition of equality of charges in the algorithm of its operation. Additionally, the functionality is extended by determining the duration of the equivalent pulse.

Claims (2)

1. A device for measuring pulse power containing dates Compiled by S. Kabikov Editor T. Kugrsheva Tehred V. Kadar T Director of the Center I. Musk Order.1318 / 52 Circulation 728 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Rauschska nab., 4/5 Branch PPP Patent, Uzhgorod, Proektna St., 4 1219974 The average power indicator and the indicator differing from the fact that, in order to improve the measurement accuracy, an average current sensor is inserted into it, 5 two quadrants and a dividing unit, the output of which is connected to the indicator input, and the dividend and divider inputs are inserted through the corresponding quadrants to the outputs of the sensor 10 average power and the average current sensor, respectively. . . 2. The device according to claim 1, characterized in that, in order to expand its functionality by providing an indication of the duration of the pulses, a second indicator and a second dividing unit are introduced into it, the output of which is under-. is connected to the input of the second indicator, and the inputs of the dividend and the divider are to the outputs of the second quad and the average power sensor, respectively.