High-performance, low-noise enhancement-mode pseudomorphic high-electron-mobility transistor with gate recession by citric acid/hydrogen peroxide selective etching

2007 ◽  
Vol 25 (4) ◽  
pp. 1284 ◽  
Author(s):  
Chih-Cheng Wang ◽  
Yu-Ju Lin ◽  
Hou-Kuei Huang ◽  
Chang-Luen Wu ◽  
Chian-Sern Chang ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Citric Acid ◽  
Electron Mobility ◽  
High Performance ◽  
High Electron Mobility Transistor ◽  
Low Noise ◽  
Selective Etching ◽  
High Electron ◽  
High Electron Mobility ◽  
Enhancement Mode

Novel high performance AlGaN/GaN based enhancement-mode metal-oxide semiconductor high electron mobility transistor

2014 ◽  
Vol 11 (3-4) ◽  
pp. 844-847 ◽  
Author(s):  
Raphael Brown ◽  
Abdullah Al-Khalidi ◽  
Douglas Macfarlane ◽  
Sanna Taking ◽  
Gary Ternent ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Electron Mobility ◽  
High Performance ◽  
High Electron Mobility Transistor ◽  
Metal Oxide Semiconductor ◽  
Oxide Semiconductor ◽  
High Electron ◽  
High Electron Mobility ◽  
Enhancement Mode

High-Performance AlGaN/GaN Enhancement-Mode High Electron Mobility Transistor by Two-Step Gate Recess and Electroless-Plating Approaches

2021 ◽  
Vol 13 (1) ◽  
pp. 30-35
Author(s):  
Ching-Hong Chang ◽  
Yue-Chang Lin ◽  
Jing-Shiuan Niu ◽  
Wen-Shiung Lour ◽  
Jung-Hui Tsai ◽  
...  
Keyword(s):  
Electroless Plating ◽  
Electron Mobility ◽  
High Performance ◽  
Drain Current ◽  
High Electron Mobility Transistor ◽  
High Electron ◽  
High Electron Mobility ◽  
Enhancement Mode ◽  
Improved Performance ◽  
Gate Recess

In this work, an AlGaN/GaN enhancement-mode high electron mobility transistor (HEMT) with two-step gate recess and electroless plating (EP) approaches is reported. Scanning electron microscopy and atomic force microscopy surface analysis are used to analysis the related properties of the EP-gate structure. A positive threshold voltage Vthof 0.68 V is obtained for the enhancement-mode EP-HEMT. In addition, a traditional HEMT based on thermal-evaporation gate is compared for the demonstration of the studied EP-HEMT with the improved performance, such as a higher maximum drain saturation current of 228.9 mA/mm, a higher maximum transconductance of 107.2 mS/mm, a lower gate leakage current of 1.2 × 10–7 mA/mm, and a higher ON/OFF drain current ratio of 4.57 × 105.

Double δ-Doped Enhancement-Mode InGaP/AlGaAs/InGaAs Pseudomorphic High Electron Mobility Transistor for Linearity Application

2006 ◽  
Vol 45 (No. 35) ◽  
pp. L932-L934 ◽  
Author(s):  
Li-Hsin Chu ◽  
Heng-Tung Hsu ◽  
Edward-Yi Chang ◽  
Tser-Lung Lee ◽  
Sze-Hung Chen ◽  
...  
Keyword(s):  
Electron Mobility ◽  
High Electron Mobility Transistor ◽  
High Electron ◽  
High Electron Mobility ◽  
Enhancement Mode

Investigation of Dielectric Resonator Oscillator Using High-Electron Mobility Transistor at 26GHz for Space Applications

2021 ◽  
pp. 2250046
Author(s):  
Pinku Ranjan ◽  
Swati Khandare
Keyword(s):  
Phase Noise ◽  
Electron Mobility ◽  
Dielectric Resonator ◽  
High Electron Mobility Transistor ◽  
Low Noise ◽  
Design System ◽  
High Electron ◽  
Space Applications ◽  
High Electron Mobility ◽  
High Frequencies

An oscillator is a vital component as the energy source in microwave telecommunication system. Microwave oscillators designed using Gunn diode have poor DC to RF efficiency. IMPact Ionization Avalanche Transit-Time diode (IMPATT) oscillators have the drawback of poor noise performance. The transistorized oscillators have a limitation to the maximum oscillation frequency which means that they cannot be used for oscillators designed for high frequencies. To design negative series feedback Dielectric Resonator Oscillator (DRO), the resonant unit uses a dielectric resonator (DR) since it is small in size, light in weight, has high-Quality ([Formula: see text]) factor, better stability and also it is inexpensive. It has the benefits of low-phase noise, low cost, miniaturization, high stability, applicable for devices designed at high frequencies and had already been widely applied, so the research on microwave dielectric oscillator has also been one of the focus of today’s microwave integrated circuits. DRO is widely used in electronic warfare, missile, radar and communication systems. The DRO incorporates High-Electron Mobility Transistor (HEMT) as an active device since it offers higher power-added efficiency combined with excellent low-noise figures and performance. The entire circuit of DRO using HEMT at 26[Formula: see text]GHz is designed using Agilent Advanced Design System (ADS) software. In this, DRO different measurements of parameters are done such as output power which is typically [Formula: see text][Formula: see text]dBm for 26[Formula: see text]GHz DRO, phase noise at 10[Formula: see text]kHz offset for 26[Formula: see text]GHz DRO it is 80[Formula: see text]dBc/Hz. The frequency pushing and frequency pulling for 26[Formula: see text]GHz DRO its typical values are 30[Formula: see text]kHz/V and 1[Formula: see text]MHz, respectively.

scholarly journals Layered boron nitride enabling high-performance AlGaN/GaN high electron mobility transistor

2020 ◽  
Vol 829 ◽  
pp. 154542 ◽  
Author(s):  
Bing Ren ◽  
Meiyong Liao ◽  
Masatomo Sumiya ◽  
Jian Li ◽  
Lei Wang ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Electron Mobility ◽  
High Performance ◽  
High Electron Mobility Transistor ◽  
High Electron ◽  
High Electron Mobility

Applications of GaN-Based High Electron Mobility Transistors in Large-Size Devices

2015 ◽  
Vol 764-765 ◽  
pp. 486-490
Author(s):  
Chih Hao Wang ◽  
Liang Yu Su ◽  
Finella Lee ◽  
Jian Jang Huang
Keyword(s):  
Electron Mobility ◽  
High Electron Mobility Transistors ◽  
High Electron Mobility Transistor ◽  
High Electron ◽  
Saturation Current ◽  
High Electron Mobility ◽  
Enhancement Mode ◽  
Electron Mobility Transistors ◽  
Large Size ◽  
Novel Design

We demonstrate a novel design of large-size device in AlGaN/GaN high-electron-mobility transistor (HEMT). Depletion mode (D-mode) HEMTs and enhancement mode (E-mode) HEMTs are fabricated in our research. The saturation current of D-mode HEMTs is over 6A. By using Cascode structure, the D-mode HEMT becomes a normally-off device efficiently, and the threshold voltage of it rises from-7V to 2V. By using BCB (Benzocyclobutene) as the passivation, the E-mode HEMT shows an excellent characteristic. Also, when the VGS of the E-mode HEMT is over 9V, it still shows a good performance.

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