A small die area and wide locking range CMOS frequency divider

作者：Jang Sheng Lyang^*; Han Jui Cheng; Lee Chien Feng; Huang J F

来源：Microwave and Optical Technology Letters, 2008, 50(2): 541-544.

DOI：10.1002/mop.23090

• CMOS
• injection-locked frequency divider
• locking range
• tunable active inductor

This letter proposes a new injection-locked frequency divider (ILFD) with wide locking range and small die area. The proposed CMOS ILFD consists of an injection MOS and an LC tank voltage-controlled oscillator with a cross-coupled switching pair and tunable active inductors. The divide-by-2 ILFD was,fabricated in the 0.18-mu m IP6M CMOS technology. At the supply voltage of 1.8 V, the divider free-running frequency is tunable from 1.46 to 2.7 GHz, and at the incident power of -4 dBm the locking range is about 3.4 GHz (79%), from the incident frequency of 2.6 to 6 0 GHz. The core power consumption is 7.2 mW and the die area is 0.383 X 0.379 mm(2).

• 出版日期2008-2