A Wide-Range Hybrid Radio Frequency Divider

This is the authors' abstract. We don't add key points for this paper.

Incorporating an input direct injection into a versatile compact oscillator featuring a switchable resistive-loaded cross-coupled pair, this work presents a low-cost radio frequency divider (FD) with a wide input range, attributing to its hybrid multimode operations. First-cut design guides, exclusively in terms of its key component parameters, on implementing a wide inductive-band span and choosing its optimal operating frequency with the peak quality factor (QF) are provided. The measured results of the RF FD in 0.18-μm CMOS show a wide input-range range (≈ 180%), while drawing 2.366 mA in low band (LB) and 4.533 mA in high band (HB), respectively, fromVDD =1.5~V.