2Hu A P, Boys J T, Covic G A.Frequency Analysis and Computation of a Current-fed Resonant Converter for ICPT Power Supplies[J].IEEE Power System Technology, 2000,8( 1 ) : 327-332.
3Ruiz-Garcia L, Barreiro P, Robla J I. Performance of Zig- Bee-based wireless sensor nodes for real-time monitoring of fruit logistics [ J ]. Journal of Food Engineering, 2008,87 (3) :405 -415.