Title :
Divide-by-Three Injection-Locked Frequency Divider Combined With Divide-by-Two Locking
Author :
Janne-Wha Wu ; Chang-Chun Chen ; Hong-Wei Kao ; Jen-Ke Chen ; Ming-Cheng Tu
Author_Institution :
Dept. of Commun. Eng., Nat. Chung Cheng Univ., Chiayi, Taiwan
Abstract :
A divide-by-3 direct-injection-locked frequency divider is demonstrated with an extra divide-by-2 operation by utilizing the two-fold frequency at the common-node between the drain-pumped injectors. The effective transconductance of the injectors is increased due to the existence of divide-by-two locking circuitry. The measured locking range is from 11.77 to 16.64 GHz (34.28%) with an output power of -7.25 dBm, as the core-circuit taking a power consumption of 4.2 mW from 1.2 V power supply.
Keywords :
frequency dividers; power consumption; common node; core circuit; divide-by-2 operation; divide-by-3 direct-injection-locked frequency divider; divide-by-three injection-locked frequency divider; divide-by-two locking circuitry; drain-pumped injectors; frequency 11.77 GHz to 16.64 GHz; injector effective transconductance; power 4.2 mW; power consumption; two-fold frequency; voltage 1.2 V; CMOS integrated circuits; Frequency conversion; Harmonic analysis; Power generation; Solid state circuits; Transconductance; Wireless communication; Direct injection-locking; divide-by-three; frequency divider; frequency locking range;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2013.2279115
