Project supported by the National Natural Science Foundation of China(Nos.61006027,61176030);the Research Foundation of Key Laboratory of Analog Integrated Circuit(Nos.9140C0902120C09034,9140c090204130c09042);the Fundamental Research Funds for the Central Universities of China(No.ZYGX2012J003)
A 2.5 GS/s 14-bit D/A converter(DAC) with 8 to 1 MUX is presented. This 14-bit DAC uses a "5+9"segment PMOS current-steering architecture. A bias circuit which ensures the PMOS current source obtains a larger out...
supported by the National Natural Science Foundation of China(No.61274134);the International Cooperation Program of Suzhou;China(No.SH201215)
A reasonably-thick GaNAs/GalnAs superlattice could be an option as a roughly 1 eV subcell to achieve high-effiCiency multi-junction solar cells on a lattice-matched Ge substrate. A detailed consideration of a high- ef...
supported by the National Natural Science Foundation of China(No.10778723)
The Ⅲ-Ⅴ compound tandem solar cell is a third-generation new style solar cell with ultra-high efficiency. The energy band gaps of the sub-cells in a GaInP/GaAs/InGaAs/Ge 4-J tandem solar cell are 1.8, 1.4, 1.0 and ...
supported by the National Natural Science Foundation of China(No.60206006);the New Century Excellent Talents of Ministry of Education of China(No.NCET-05-0851);the Cultivation Fund of the Key Scientific and Technical Innovation Project,Ministry of Education of China Program(No.708083);the Applied Materials Innovation Fund(No.XA-AM-200701)
Nonlinearity caused by the clock feed-through of a bootstrapped switch and its compensation techniques are analyzed. All kinds of clock feed-through compensation configurations and their drawbacks are also investigate...
8GHz 20W internally matched A1GaN/GaN HEMTs have been developed. The input and output matching net- works are realised with microstrip lines on a 0. 381mm thick alumina substrate. To improve the stability factor K of ...