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An unique time-interleaved dual injection locking scheme has been devised to enable ultra high-speed and low-power frequency division with extended frequency locking range. To prove the concept, two frequency dividers (or prescalers) have been realized in 65nm digital CMOS: one divides continuously from 158GHz to 195GHz (or 21% locking range) with input signal <; 0dBm and the other divides from...
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...
A new topology for injection locked frequency divider (ILFD) is proposed to achieve high speed, wide locking range and quadrature phase operation. The dividing mechanism is analyzed and agrees well with the simulation. A prototype is implemented in TSMC 90 nm CMOS and realizes 4 GHz locking range (55.8 GHz-59.8 GHz) with -3 dBm input power and 5 mW DC power consumption. The divider attains the widest...
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