JOURNAL OF CHINA UNIVERSITIES OF POSTS AND TELECOM ›› 2016, Vol. 23 ›› Issue (5): 56-60.doi: 10.1016/S1005-8885(16)60058-4

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Small-signal switch model of GaN HEMTs for MMIC applications

Du Lin1 , Yang Xiaofeng2, Li Yang1, Zhang Jincheng1, Hao Yue1   

  • Received:2016-07-05 Revised:2016-09-29 Online:2016-10-30 Published:2016-10-26
  • Contact: Lin DU E-mail:ldu@xidian.edu.cn
  • Supported by:
    he National Natural Science Foundation of China (61574108, 61574112, 61504099), the Natural Science Basic Research Plan in Shaanxi Province of China (605119425012).

Abstract: Gallium nitride (GaN) high electron mobility transistor (HEMT) with symmetrical structure as a control device is discussed in this paper. The equivalent circuit model is proposed on the basis of physical and electrical properties of the GaN HEMT device. A transistor with 0.5 μm gate length and 6 × 125 μm gate width is fabricated to verify the model, which can be treated as a single pole single throw (SPST) switch due to the ON state and OFF state. The measurement results show a good agreement with the simulation results, which demonstrates the effectiveness of the proposed model.

Key words: GaN HEMT, switch model, symmetrical structure, MMIC

CLC Number: