Recent progress of GaN electronic devices for wireless communication system

T. Kikkawa; K. Imanishi; N. Hara; H. Shigematsu; K. Joshin

doi:10.1117/12.772152

28 February 2008 Recent progress of GaN electronic devices for wireless communication system

T. Kikkawa, K. Imanishi, N. Hara, H. Shigematsu, K. Joshin

Proceedings Volume 6894, Gallium Nitride Materials and Devices III; 68941Q (2008) https://doi.org/10.1117/12.772152
Event: Integrated Optoelectronic Devices 2008, 2008, San Jose, California, United States

Abstract

We report a current status of high-power GaN HEMTs for high-power and high-efficiency amplifiers with higher efficiency by 5% especially at a backed-off region than the conventional GaN HEMTs. First, we introduce our specific device structure GaN HEMT with dispersion-free I-V characteristics, low Idsq-drift and high reliability. Record average drain efficiency of over 50% and linear gain of 17.2 dB were obtained at an output power of 45 dBm and 2.5 GHz. Next, we discuss their reliability with high-temperature life tests resulting in their estimated life of over 1 x 10⁶ hours at Tj of 200 °C. High-k insulated gate HEMTs using Ta₂O₅ were also developed. Finally, we describe the next generation GaN HEMTs for millimeter-wave applications.

Citation Download Citation

T. Kikkawa, K. Imanishi, N. Hara, H. Shigematsu, and K. Joshin "Recent progress of GaN electronic devices for wireless communication system", Proc. SPIE 6894, Gallium Nitride Materials and Devices III, 68941Q (28 February 2008); https://doi.org/10.1117/12.772152

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available