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Journal of Microwave Power
and Electromagnetic Energy (JMPEE) |
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TITLE |
A Simple Technique for Measuring
High Microwave Electric Field Strengths [PDF] |
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AUTHORS |
C.S. MacLatchy and R.MN. Clements 1980 15 1 7-14 |
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Abstract A simple, non perturbing
method for measuring the electric field strength in a device, such as a microwave
oven, is described. It is based on measurement of the minimum and/or maximum
pressure at which a selected gas (in our case Heg)
in a small cell breaks down. As microwave breakdown in gases is well
understood, pressures measured can be easily converted to absolute values of
field strength, with no calibration required. The cells may be small, so
spatial resolution is reasonably good. Field strength measurements in a
commercially available microwave oven were made using this technique, and
were compared to fields deduced irons the power
dissipated in water loads. Two different methods of computing the field from
power dissipation calculations are compared with the Heg |
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