GaN 2DEG Varactor-Based Impulse Suppression Module for Protection Against Malicious Electromagnetic Interference
| Autor: | Liann-Be Chang, Zi-Xin Ding, Chien-Fu Shih, Yu-Li Hsieh, Ming-Jer Jeng, Ying-Chang Li |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Electrostatic discharge Materials science business.industry 02 engineering and technology Impulse (physics) 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Capacitance Electromagnetic interference Electronic Optical and Magnetic Materials 0103 physical sciences Materials Chemistry Empirical formula Optoelectronics Electrical and Electronic Engineering 0210 nano-technology business Varicap Voltage Electromagnetic pulse |
| Zdroj: | Journal of Electronic Materials. 49:6798-6805 |
| ISSN: | 1543-186X 0361-5235 |
| DOI: | 10.1007/s11664-020-08110-0 |
| Popis: | A GaN-based metal–semiconductor–metal varactor with a two-dimensional electron gas (2DEG) layer is proposed and fabricated. The capacitance variation of this fabricated varactor biased at different external voltages is studied and measured, and the frequency-dependent capacitance and resistance of the varactor are simulated by a corresponding empirical formula. A high-frequency protective filter is further constructed and placed under a large pulsed-current injection in a malicious electromagnetic interference immunity test. The results show that the proposed GaN-based module can reduce the large pulsed current to an acceptably small level. Thus, the GaN-based 2DEG varactor is an attractive candidate for applications designed to protect the upcoming 5G high-frequency system from risks such as electrostatic discharge, lightning, and electromagnetic pulses. |
| Databáze: | OpenAIRE |
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