Title :
A Low Power V-Band CMOS Frequency Divider With Wide Locking Range and Accurate Quadrature Output Phases
Author :
Gu, Qun ; Xu, Zhiwei ; Huang, Daquan ; LaRocca, Tim ; Wang, Ning-Yi ; Hant, William ; Chang, Mau-Chung Frank
Author_Institution :
Univ. of California at Los Angeles, Los Angeles
fDate :
4/1/2008 12:00:00 AM
Abstract :
A new injection-locked frequency divider (ILFD) circuit topology, by combining the strengths of LC type ILFD (LC_ILFD) and ring oscillator type ILFD (RO_ILFD), is proposed to achieve high speed, low power, wide locking range and accurate quadrature output phases. The frequency-division criterion is analyzed and agrees well with simulation results. The phase-locking mechanism is also investigated with emphasis on its resilience to device and circuit mismatches. A prototype is implemented in TSMC 90 nm CMOS to validate the effective locking range of 7.4 GHz (53.4 to 60.8 GHz) with 0 dBm input signal and 5 mW DC power dissipation. The circuit attains the highest figure-of-merit (dividing frequency/power) to date for V-band frequency dividers implemented in deep-scaled CMOS technologies.
Keywords :
CMOS integrated circuits; frequency dividers; network topology; circuit mismatch; circuit topology; injection-locked frequency divider; low power V-band CMOS frequency divider; quadrature output phases; Analytical models; CMOS technology; Circuit topology; Coupling circuits; Energy consumption; Frequency conversion; Frequency synthesizers; Inductors; Parasitic capacitance; Ring oscillators; Accurate quadrature phase; RF CMOS; injection-locked frequency divider; low power consumption; phase noise; wide locking range;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2008.917517
