Magnetic Near-Field Distribution Measurements above a Patch Antenna by Using an Optical Waveguide Probe(Measurements, <Special Section>2004 International Symposium on Electromagnetic Compatibility)

概要

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A magnetic field probe consisting of a LiNbO_3 optical waveguide modulator and a loop antenna element was developed to enable accurate measurement of magnetic near-fields in the gigahertz range. The invasiveness of the probe was assessed by using it to measure the magnetic field distribution above a patch antenna operating at 2.49 GHz. The measurements were compared with those obtained using a shielded loop probe. The experimental results obtained using the probe were also compared with simulation results obtained using a finite-difference time-domain (FDTD) method. The overall results indicated that the optical waveguide probe was capable of accurately measuring magnetic near-fields with low disturbance of the measured fields.
社団法人電子情報通信学会の論文
2005-08-01