摘要
针对目前大多数射频可调谐芯片中前置分频器多为双模结构,设计了一种基于2/3分频单元的可编程多模(64～127)前置分频器。采用0.35μm SiGe BiCMOS工艺,在工作电源电压Vdd=5V,输入频率为2.2GHz的情况下,可实现分频比为64～127之间的可编程多值分频,功耗为37.18mW。
Based on most prescalers in Tuner IC nowadays can only present as dual-modulus but non-programmable structure, a multi-modulus programmable prescaler structure combined with basic 2/3 cell which can achieve divider ratio during 64 - 127 is presented. It is designed by 0. 35 μm SiGe BiCMOS process, and has been simulated under the condition that the supply voltage is 5 V, and the input frequency is 2.2 GHz. The simulating result shows that the prescaler can work well with achieving multi-modulus frequency dividing from 64 to 127, and the whole power dissipation is 37.18 mW.
出处
《电子器件》
CAS
2008年第2期653-656,共4页
Chinese Journal of Electron Devices
