A 22GHz 1-511 Broadband Programmable Frequency Divider

A high-speed broadband programmable frequency divider chip is designed and implemented in 0.18μm SiGe BiCMOS process. The chip is based on the 2/3 dual-mode frequency divider, and integrates high-speed logic operation and reset control in the flip-flop to achieve continuous integer frequency division from 1 to 511. Taking SCFL DFF as basic units, it realizes wide-band operation and obtains a good input sensitivity range. The simulation results demonstrate that the operating frequency can cover 0.1GHz~22GHz, and the input sensitivity in the whole frequency band is lower than -20dBm