Ultra-Wide Locking Range Regenerative Frequency Dividers With Quadrature-Injection Current-Mode-Logic Loop Divider

摘要

The ${div} 3$ and ${div} 5$ regenerative frequency dividers (RFDs) with ultra-wide locking ranges are presented. The proposed dividers were fabricated by a TSMC 90 nm CMOS process, using ${div} 2$ and ${div} 4$ quadrature-injected current-mode-logic loop dividers to widen the locking ranges. The dividers also achieved quadrature input and quadrature output. Using a 1.2 V supply voltage, the power consumptions of the ${div} 3$ and the ${div} 5$ divider cores were 10.2 and 14.8 mW, respectively. Without using the tuning techniques, the measured locking ranges for the ${div} 3$ and the ${div} 5$ dividers were from 9 to 14.7 GHz (48.1%) and 7.2 to 19 GHz (90.1%), respectively. The phase deviation of the quadrature outputs for the two dividers were less than 0.8$^{circ}$ and 1.1$^{circ}$ . Compared with the reported data, the outstanding figure-of-merit values of the proposed ${div} 3$ and ${div} 5$ RFDs can be observed.