Browsing by Author "Wang, Sheng-Chiun"

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Characterization of Annular-Structure RF LDMOS Transistors Using Polyharmonic Distortion Model
(2009)
Chiu, Chia-Sung
;
Chen, Kun-Ming
;
Huang, Guo-Wei
;
Hsiao, Chih-Hua
;
Liao, Kuo-Hsiang
An annular-structure lateral-diffused metal-oxide semiconductor (LDMOS) RF transistor with polyharmonic distortion (PHD) model characterized by nonlinear vector network analyzer is described in this paper. The devices were fabricated using a 0.5 mu m LDMOS process. The DC, small-signal, and large-signal characteristics of RF LDMOS transistors with annular-structures were also studied in this work. Using the PHD model, the accuracy of intermodulation and time waveform is verified. Furthermore, the model via X-parameter shows good agreement without optimization.