Third Harmonic Distortion of Dielectric Resonator Materials

概要

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Microwave dielectric materials must have a low third harmonic distortion when they are used for high-power applications. This is because the third harmonic distortion produces a third-order intermodulation distortion which generates interference between signals. In this paper, the measurement results of the third harmonic distortion levels for three types of dielectric resonator materials, (Zr, Sn)TiO4, MgTiO3–CaTiO3 and BaO–PbO–Nd2O3–TiO2, are reported and the equations derived to combine the distortion level and the fourth anharmonic term in the crystal's Hamiltonian. The measured distortion levels have a strong correlation with dielectric loss tangents of the materials. This relationship is also explained in connection with the anharmonic terms in the crystal's Hamiltonian.
INSTITUTE OF PURE AND APPLIED PHYSICSの論文
1989-12-20