A Study on Linear Measurement Technology of Micro wave Power Based on Hall Effect
In order to improve the accuracy of microwave power measurement,the linear relationship between the direct cur-rent component of the Hall voltage and the microwave power density is obtained by analytical method when a planar electromagnetic wave acts on a Hall device.Two types of microwave power detectors,namely the through type and the absorption type,are de-signed based on the coaxial line.Taking the coaxial through type as an example,the linearity of the detector reaches 98.28％when the power is between 0.1 mW to 50.0 mW,the rise time is 3 µs～6 μs,and the frequency range is 1 GHz～10 GHz.The experi-mental results agree well with the theoretical analysis ones.The new detectors have both the characteristics of good linearity and fast response and are expected to be more widely used.
Hall effectmicrowave power measurementlinearityreal-time capability
万方数据
维普
