Effects of source and load impedance on the intermodulation distortion products of GaAsFETs
SCIE
SCOPUS
- Title
- Effects of source and load impedance on the intermodulation distortion products of GaAsFETs
- Authors
- Ahn, KH; Lee, SH; Jeong, YH
- Date Issued
- 2001-08
- Publisher
- IEICE-INST ELECTRONICS INFORMATION CO
- Abstract
- The linearity of the GaAs Field Effect Transistor (FET) power amplifier is greatly influenced by the nonlinear characteristics of gate-source capacitance (C-gs) and drain-source current (I-ds) for the FETs. However. previously suggested analysis methods of GaAs FET non-linearity are mainly focused on the investigations by each individual non-linear component (C-gs) or (I-ds) without considering both non-linear effects. We analyze more accurately the non-linearity of GaAs FETs by considering non-linear effects of C-gs and I-ds simultaneously. We also investigate the third-order intermodulation distortion (IMD3) of the GaAs FET in relation to source and load impedances that minimize FET non-linearities. From the simulation results by Volterra-series technique, we show that the least IMD3 is found at the minimum source resistance (R-S) and maximum load resistance (R-L) in the equivalent output power (P-out) contour. Simulated results are compared with the load and source pull data, with good agreement.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/10278
- ISSN
- 0916-8524
- Article Type
- Article
- Citation
- IEICE TRANSACTIONS ON ELECTRONICS, vol. E84C, no. 8, page. 1104 - 1110, 2001-08
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