31 W/mm at 8 GHz in InAlGaN/GaN HEMT With Thermal CVD SiN<sub>x</sub> Passivation

Yamada, Atsushi; Minoura, Yuichi; Kurahashi, Naoko; Kamada, Yoichi; Ohki, Toshihiro; Sato, Masaru; Nakamura, Norikazu

doi:10.1109/led.2024.3355051

IEEE Electron Device Lett.

2024

DOI: 10.1109/led.2024.3355051

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31 W/mm at 8 GHz in InAlGaN/GaN HEMT With Thermal CVD SiN_x Passivation

Atsushi Yamada,

Yuichi Minoura,

Naoko Kurahashi

et al.

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Cited by 4 publications

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Review on Solid-State Narrow and Wide-Band Power Amplifier

Urooj,

Al Absi

2024

Arab J Sci Eng

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Review on Solid-State Narrow and Wide-Band Power Amplifier

Urooj,

Al Absi

2024

Arab J Sci Eng

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A computational approach to optimize the linearity in dual-gate InAlGaN/AlN/GaN HEMTs

Awasthi,

Hsu,

Tsao

et al. 2024

Semicond. Sci. Technol.

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This paper investigates the effect of the proposed dual gate structures in enhancing the linearity of InAlGaN/AlN/GaN high-electron-mobility transistors (HEMTs) using TCAD analysis. Through the comprehensive analysis of the dual gate structure with the additional gate placed between the gate-source (DG-GS) and gate-drain (DG-GD) regions, the impact on the linearity performance has been compared with that of a standard single gate (SG) structure. The dual gate configuration exhibits a flatter and broader transconductance (gm) profile than the single gate configuration. The reduction in the third-order intermodulation levels is confirmed with the polynomial fitting method. The fT/fmax of the DG-GS case is simulated to be 52/102 GHz, which shows that such configuration does not deteriorate the RF performance. Comprehensive simulations are carried out to study the device physics and assess the mechanism behind the linearity improvement. The large signal model has been developed to examine the large signal RF performance as well as linearity performance metrics. An improvement of 9.6 dB in the carrier-to-intermodulation (C/I) ratio and that of 2.4 degrees in the amplitude-to-phase modulation (AM-to-PM) at 6-dB backoff from Psat have been observed as compared to the SG configuration. Such characteristics have evidenced that the optimized dual-gate configuration with the second gate placed between the source and gate can effectively improve the linearity performance of the InAlGaN/AlN/GaN HEMT configurations.

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Ultrawide-Bandgap Semiconductors for High-Frequency Devices

Pavlidis,

Medwig,

Thomas

2024

IEEE Microwave

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31 W/mm at 8 GHz in InAlGaN/GaN HEMT With Thermal CVD SiN_x Passivation

Cited by 4 publications

References 30 publications

Review on Solid-State Narrow and Wide-Band Power Amplifier

Review on Solid-State Narrow and Wide-Band Power Amplifier

A computational approach to optimize the linearity in dual-gate InAlGaN/AlN/GaN HEMTs

Ultrawide-Bandgap Semiconductors for High-Frequency Devices

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Product

Resources

About

31 W/mm at 8 GHz in InAlGaN/GaN HEMT With Thermal CVD SiNx Passivation

Cited by 4 publications

References 30 publications

Review on Solid-State Narrow and Wide-Band Power Amplifier

Review on Solid-State Narrow and Wide-Band Power Amplifier

A computational approach to optimize the linearity in dual-gate InAlGaN/AlN/GaN HEMTs

Ultrawide-Bandgap Semiconductors for High-Frequency Devices

Contact Info

Product

Resources

About

31 W/mm at 8 GHz in InAlGaN/GaN HEMT With Thermal CVD SiN_x Passivation