Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Shawn D. Burnham"'
Autor:
Joel C. Wong, Haw Y. Tai, Helen Fung, D. Regan, D. F. Brown, Dayward Santos, Eric M. Prophet, Shawn D. Burnham, Miroslav Micovic, A. Kurdoghlian, Jesus Magadia, Isaac Khalaf, Yan Tang, Bob Grabar
Publikováno v:
IEEE Electron Device Letters. 38:1708-1711
We report the state-of-the-art $V$ -band power performance of a scaled 40-nm gate length Al0.23Ga0.77N/AlN/GaN/Al0.08Ga0.92N double heterojunction field effect transistor (DHFET). The $200~\mu \text{m}$ ( $4\times 50 ~\mu \text{m}$ ) wide GaN DHFETs
Autor:
David F. Brown, Miroslav Micovic, Dayward Santos, Jesus Magadia, R. Bowen, Shawn D. Burnham, Robert Grabar, Joe Tai, Isaac Khalaf
Publikováno v:
IEEE Transactions on Semiconductor Manufacturing. 30:480-485
HRL’s T3 GaN MMIC technology is evaluated using dc reliability experiments, including a voltage step-stress test, a temperature step-stress test, and a 3-temperature life test. The drain voltage step-stress test revealed three distinct regions of o
Autor:
Joe Tai, Joel C. Wong, Helen Fung, Hector L. Bracamontes, Eric M. Prophet, David F. Brown, A. Kurdoghlian, D. Regan, C. McGuire, Miroslav Micovic, Dayward Santos, Shawn D. Burnham, Adele E. Schmitz, Herrault Florian G, Isaac Khalaf, Yan Tang
Publikováno v:
2016 IEEE International Electron Devices Meeting (IEDM).
We provide an overview of key challenges and technical breakthroughs that led to development of highly scaled GaN HEMT's having ft > 400 GHz and fmax > 550 GHz and the corresponding IC process. These highly scaled GaN devices have 5 times higher brea
Autor:
Isaac Khalaf, Yan Tang, Joel Wong, Miroslav Micovic, Eric M. Prophet, Joe Tai, Dayward Santos, Helen Fung, Charles McGuire, David F. Brown, Shawn D. Burnham, A. Kurdoghlian, Adele E. Schmitz, Herrault Florian G, Robert Grabar, Hector L. Bracamontes, D. Regan
Publikováno v:
2016 IEEE Compound Semiconductor Integrated Circuit Symposium (CSICS).
We report the first generation of GaN MMIC circuits that are based on the latest generation of (ft > 320 GHz and fmax > 580 GHz) [1] GaN Transistors. The reported broadband Ka-band (27 GHz - 40 GHz) GaN LNA MMIC's have Noise Figure (NF) as low as 1 d
Autor:
Mary Chen, Hector L. Bracamontes, R. Bowen, Pete Willadsen, Shawn D. Burnham, Paul Hashimoto, D. Wong, Miroslav Micovic, Ming Hu
Publikováno v:
physica status solidi c. 8:2399-2403
For the first time, we report on degradation mechanisms of short gate length (Lg = 0.15 µm) T-gate AlGaN/GaN HEMTs, and compare to previously reported findings for GaN field plate devices of the same gate length. Both types of studied devices were s
Autor:
Paul Hashimoto, Adam J. Williams, Adele E. Schmitz, Keisuke Shinohara, C. Butler, S. Kim, Robert Grabar, D. Regan, P. J. Willadsen, Shawn D. Burnham, Andrea Corrion, Miroslav Micovic, David F. Brown, Ivan Milosavljevic
Publikováno v:
IEEE Transactions on Electron Devices. 58:1063-1067
We have achieved the monolithic integration of two Ill-nitride device structures through the use of etching and re growth by molecular beam epitaxy (MBE). Using this regrowth technique, we integrated enhancement-mode (E-mode) and depletion-mode (D-mo
Publikováno v:
physica status solidi c. 5:1855-1858
Improvements to the Metal Modulated Epitaxy (MME) technique are achieved through computer controlled shutter transitions based on feedback from RHEED transients (S. D. Burnham and W. A. Doolittle, J. Vac. Sci. Technol. B 24, 2100 (2006) [1]), thus cr
Autor:
Elaissa Trybus, Alexander N. Cartwright, Maurice Cheung, Shawn D. Burnham, Gon Namkoong, Walter Henderson, W. Alan Doolittle
Publikováno v:
Journal of Crystal Growth. 288:218-224
The potential of InN as a photovoltaic material is described. For solar applications, several key developments such as p-type doping and solid-state rectifying junctions have yet to be demonstrated. However, the ability of InGaN materials to optimall
Publikováno v:
Journal of Crystal Growth. 279:26-30
A valved thermal cracker was used as the Mg dopant source for growing p-type GaN, and benefits of this device over conventional effusion cells are outlined. The thermally energetic Mg cracker source, with an independent, valved-flux control, was used
Autor:
David F. Brown, Adam J. Williams, Keisuke Shinohara, Michael Johnson, Dayward Santos, Thomas C. Oh, Joel C. Wong, Shawn D. Burnham, John F. Robinson, C. Butler, Robert Grabar, Rongming Chu, S. Kim, Daniel Zehnder, Miroslav Micovic, Ivan Alvarado-Rodriguez, Andrea Corrion
Publikováno v:
IEEE Electron Device Letters. 34:1118-1120
We report a novel GaN heterojunction field-effect transistor device that incorporates vertically scaled epilayers, a nanoscale gate with integrated staircase-shaped field plates, and regrown ohmic contacts. This device technology has an unprecedented