An Ultra-high-speed Direct Digital Synthesizer MMIC
This paper presents an ultra-high-speed direct digital frequency synthesizer (DDS) microwave monolithic integrated circuit (MMIC) implemented in lum GaAs HBT technology. The DDS has the capabilities of direct frequency modulations with 8-bit frequency resolutions. Utilizing a Double-Edge-Trigger (DET) 8-stage pipeline accumulator with sine-weighted DAC based ROM-less architecture, this DDS MMIC can maximize the utilization ratio of GaAs HBTs high-speed potential. With an external clock output frequency of SGHz, the DDS can output sine signal of up to SGHz frequency giving an average Spurious Free Dynamic Range (SFDR) of 23.24dBc through the first Nyquist band. The DDS MMIC consumes 2.4W of DC power from a single -4.6V DC supply. Using 1651 GaAs HBT transistors, the total area of the DDS chip is 2.4x2.0mm2.
Accumulator, digital to analog converter (DAC) direct digital synthesizer (DDS) direct digital frequency synthesizer (DDFS) Double-Edge-Trigger digital-to-analog converter (DAC) Gallium Arsenide (GaAs) beterojunction bipolar transistor (HBT)
Gaopeng Chen Danyu Wu Zhi Jin Xinyu Liu
Institute of Microelectronics，Chinese Academy of Sciences，Beijing，100029，China
国际会议
成都
英文
217-220
2010-05-08（万方平台首次上网日期，不代表论文的发表时间）