Heat loss self-compensating terminal type water load microwave high power meter

A technology of automatic compensation and water load, which is applied in the direction of temperature compensation modification, thermometers and thermometers using electric/magnetic elements that are directly sensitive to heat, and can solve problems such as microwave power meter errors and high-power microwave test heat loss errors.

Inactive Publication Date: 2009-10-28
DONGGUAN GUANGHUA IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0021] figure 1 The prior art scheme shown has a heat loss error problem for high-power microwave testing. Using a 10 kilowatt magnetron plus a 5KVA five-centimeter wave, the resulting heat loss error is enough to cause 15% to 30% of the terminal microwave power meter. error
[0022] If a pass-through type plus ...

Method used

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  • Heat loss self-compensating terminal type water load microwave high power meter
  • Heat loss self-compensating terminal type water load microwave high power meter
  • Heat loss self-compensating terminal type water load microwave high power meter

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Embodiment Construction

[0041] see image 3 , the water supply system of the present invention includes: a return water tank 9, a cooling pipe 8, a water outlet tank 7, a water pump 6, a water volume regulating valve 5, a terminal load 11, a waveguide load body 12, and the waveguide load body 12 is connected to the return water tank 9 of the water supply system; The test system includes: a test head 1 , a quartz glass body 2 , an adjustable AC electric heater 3 , a temperature difference sensor 4 and a signal detection circuit 14 . The temperature difference sensor 4 is a thermocouple.

[0042] On the basis of the prior art, the present invention adds a heat loss compensation system, which consists of a test head 10, a quartz glass body 13, and a temperature difference sensor 41; the water outlet of the test system is connected with the water inlet of the heat loss compensation system through the temperature difference sensor 41, and the After passing through the quartz glass body 13, it flows back ...

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Abstract

The invention relates to a heat loss self-compensating terminal type water load microwave high power meter which comprises a water supply system, a testing system and an additional heat loss compensating system, wherein the heat loss compensating system comprises a testing head 10, a quartz glass body 13 and a temperature difference sensor 41; and the structure of the heat loss compensating system is the same as that of a testing system which comprises a testing head 1, a quartz glass body 2, and the like and ensures that heat loss temperature difference signals are reversely connected with a temperature difference sensor 4 of the testing system in series through the temperature difference sensor 41 so as to realize the dynamic compensation of the heat loss signals and improve the measuring precision. The invention has the advantages of simple structure and convenient application.

Description

technical field [0001] The invention belongs to an electronic test instrument, and is particularly related to the test of microwave high power. Background technique [0002] At present, the most effective and commonly used method for the measurement of microwave high power from several watts to tens of kilowatts is water load. As a terminal type measurement, water with a certain flow rate is injected into the waveguide type measurement head, as long as the design has an attenuation section of 80 ~ 90dB , when the microwave power enters the measuring head and its standing wave ratio ρ<1.2, it can be considered that the microwave power is completely absorbed through the measuring head, and the absorbed microwave power is converted into water temperature by thermal work, and then passed through the thermocouple The sensor converts the water temperature into a power indicator, and through the AC standard, the microwave power measured by the terminal water load is obtained. ...

Claims

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Application Information

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IPC IPC(8): G01R29/08G01R31/00G01R1/44G01K7/02
Inventor 陈锦棠方木松
Owner DONGGUAN GUANGHUA IND
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