| Autor: |
Qun Gu, Zhiwei Xu, Daquan Huang, Larocca, Tim, Ning-Yi Wang, Hant, William, Chang, Mau-Chung Frank |
| Předmět: |
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| Zdroj: |
IEEE Journal of Solid-State Circuits; Apr2008, Vol. 43 Issue 4, p991-998, 8p, 8 Diagrams, 1 Chart, 4 Graphs |
| Abstrakt: |
A new injection-locked frequency divider (ILFD) circuit topology, by combining the strengths of LC type ILFD (LC̱ILFD) and ring oscillator type ILFD (RO̱ILFD), 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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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