A 0.35-mu m CMOS FREQUENCY DIVIDER IMPLEMENTED WITH THE WAFFLE INJECTION MOSFET

作者：Jang Sheng Lyang^*; Cheng Ching Lun; Chang Chia Wei; Juang Miin Horng

来源：Microwave and Optical Technology Letters, 2011, 53(7): 1610-1613.

DOI：10.1002/mop.26064

• injection-locked frequency divider
• 0.35-mu m CMOS
• LC-tank oscillator
• Waffle MOSFET

This letter proposes a CMOS injection-locked frequency divider (ILFD) fabricated in a 0.35-mu m CMOS process. The ILFD circuit is realized with a cross-coupled CMOS LC-tank oscillator, and the external injection is carried out through the gate of a waffle MOSFET. The self-oscillating ILFD is injection-locked by second-/fourth-harmonic input to obtain the division order of two/four. Measurement results show that at the supply voltage of 0.9 V and at the incident power of 0 dBm, the locking range is from the incident frequency 4.25 to 6.35 GHz in the divide-by-2 mode. The locking range is from the incident frequency 10.75 to 11.25 GHz in the divide-by-4 mode.

• 出版日期2011-7