AD9833是一款DDS函数信号发生芯片，通过51单片机的控制可以产生不同频率的正玄波、方波和三角波-AD9833 is a DDS Function generator chip, the microcontroller controls through 51 different frequencies can produce sine wave, square wave and triangular wave

用平面波展开法计算的二维光子晶体空气孔结构，TM和TE模式的能带图，matlab程序源代码-With the plane wave expansion method to calculate the two-dimensional photonic crystal structure of air holes, TM and TE modes of the energy band diagram, matlab source code