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提出了一种应用新的电路结构和动态电路技术的双模预分频器 ,它已用 0 .2 5μm CMOS数字工艺实现 .新的优化结构减少了电路的传输延迟 ,提高了电路速度 .基于这种优化结构和动态电路技术 ,提出了改进的 D型触发器 .为了验证其功能 ,制作了一个试验型芯片 .经测试 ,该分频器在可以工作于 GHz频率范围 ;在电源电压为 2 .5 V ,输入频率为 2 .5 GHz时 ,其功耗仅为 35 m W(包括三个功耗很大的输出缓冲器的功耗 ) .由于其具有良好的性能 ,该分频器可应用于许多射频系统中 .
A dual-mode prescaler with new circuit structure and dynamic circuit technology is proposed, which has been implemented in 0.52μm CMOS digital technology.The new optimized structure reduces the transmission delay of the circuit and improves the circuit speed.Based on This optimized structure and dynamic circuit technology, an improved D-type flip-flop in order to verify its function, made a test chip.It was tested that the frequency divider can work in the GHz frequency range; the power supply voltage of 2 .5 V, consumes only 35 mW at an input frequency of 2.5 GHz (including the power dissipation of the three power-hungry output buffers.) Because of its good performance, the divider can be Used in many RF systems.