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基于金属与金属氧化物接触的势垒模型和整流理论,从金属-氧化物结点的非线性伏安特性出发,分析了金属-氧化物结点在微波照射下的谐波再辐射特性及结点上产生的三次谐波电流分量的表达式。此外,从金属-氧化物自身的角度出发,经过详细的理论推导,讨论了金属-氧化物结点再辐射特性中影响三次谐波电流分量强弱的因素。理论结果表明,其它条件相同时,当金属与氧化物的接触面积较小,或者金属与氧化物接触面的势垒高度较大时,金属-氧化物结点上再辐射的三次谐波电流分量较弱。最后,通过实验测试验证,当金属与氧化物的接触面积减小或者金属与氧化物接触面的势垒高度增大时,金属-氧化物结点上的三次谐波分量明显减弱。
Based on the barrier model of metal-metal oxide contact and the rectification theory, based on the nonlinear volt-ampere characteristics of metal-oxide junction, the harmonic reradiation characteristics of metal-oxide junction under microwave irradiation The resulting third harmonic current component expression. In addition, from the perspective of metal-oxide itself, through the detailed theoretical derivation, the factors influencing the third harmonic current component in metal-oxide junction reradiation characteristics are discussed. The theoretical results show that when the other conditions are the same, the third harmonic current component re-radiated on the metal-oxide junction when the metal-oxide contact area is small or the barrier height between the metal and the oxide contact surface is large Weaker. Finally, experimental verification shows that the third harmonic component of the metal-oxide junction is significantly weakened when the contact area between the metal and the oxide decreases or the barrier height between the metal and the oxide increases.