Project supported by the National High Technology Research and Development Program of China(Grant No.2015AA016801)
An X-band inverse class-F power amplifier is realized by a 1-mm Al Ga N/Ga N high electron mobility transistor(HEMT).The intrinsic and parasitic components inside the transistor,especially output capacitor Cds,influ...
Project supported by the National Natural Science Foundation of China(Grant No.61203211);the Natural Science Foundation of Jiangsu Higher Education Institutions of China(Grant No.13KJB140006);the Foundation for Outstanding Young Teachers of Nanjing University of Information Science&Technology,China(Grant No.20110423)
In this paper, we present a high-efficiency S-band gallium nitride (GaN) power amplifier (PA). This amplifier is fabri- cated based on a self-developed GaN high-electron-mobility transistor (HEMT) with 10 mm gat...
Project supported by the National Natural Science Foundation of China (Grant No. 60971038);the Fundamental Research Funds for the Central Universities (Grant No. ZYGX2009Z003)
The study on a miniaturized, low-voltage, wide-bandwidth, high-efficiency modified V-shaped microstrip meander-line slow-wave structure is presented. This structure is evolved from the original U-shaped microstrip mea...
supported by the Innovation Foundation for Graduates in National University of Defense Technology,China (GrantNo.B080702)
A novel scalable architecture for coherent beam combining with hybrid phase control involving passive phasing and active phasing in master oscillator-power amplifier configuration is presented. Wide-linewidth mutually...
Project supported by the National High Technology Research and Development Program and the National Natural Science Foundation of China (Grant No. 60508013)
This paper demonstrated a high power and high beam quality diode-pumped 1319-nm Nd:YAG master oscillator-power amplifier laser system. A thermally near-unstable resonator with four-rod birefringence compensation fiat...
Project supported by the National Natural Science Foundation of China (Grant Nos 60527003,60608011 and 60878003);the State Key Program for Basic Research of China (Grant No 2007CB316501)
By using an external-cavity frequency-doubling master oscillator fiber power amplifier (MOPA), a 700 mW continuous-wave single-frequency laser source at 780 nm is produced. It is shown that the frequency doubling ef...
In this paper, we studied incoherent and coherent beam combining for the master oscillator/power amplifier (MOPA) system with stimulated Brillouin scattering (SBS) mirror. Optic field intensity distributions in th...