摘要
相位调制有多种实现方法。常见的是正交调制。文中提出了一种采用微波移相技术实现相位调制的新设计,通过与正交调制方法进行对比,实现了2,8,16,32和64相的相位调制。实测表明,文中设计的移相误差<1.2°,误码率达到了常见的正交相位调制实现技术的误码水平。此外新设计无需常见的正交相位调制实现技术所必须的数模转换器、正交调制器和混频器,使系统得以简化,且成本有所降低。
There are many implementations of phase modulation, among which the most commonly used is or- thogonal modulation. A new design of phase modulation hy using microwave phase shifting is presented, by which 2, 4, 8, 16, 32 and 64 phase modulations are implemented. Tests show the phase shifting error of the new design is lower than 1.2° with as good a bit error ratio （BER） as that of the orthogonal modulation. Besides, the new design does not require the digital to analog converter （ DAC ）, orthogonal modulator and mixer that are necessary in the general applied orthogonal modulation, thus simplifying the system and reducing the cost.
出处
《电子科技》
2014年第2期75-77,共3页
Electronic Science and Technology
基金
国家自然科学基金资助项目(60871008)
关键词
微带线
移相器
误码率
相位调制
正交调制
micro-strip
phase shifter
BER
phase modulation
orthogonal modulation
