Title :
A 7–12 GHz multi-modulus frequency divider
Author :
Jeng-Han Tsai ; Yi-Wei Chung ; Hung-Da Shih ; Jian-Ping Chou
Author_Institution :
Dept. of Appl. Electron. Technol., Nat. Taiwan Normal Univ., Taipei, Taiwan
Abstract :
A 7-12 GHz divide-by-256/260/264/268 multi-modulus frequency divider chain is designed and implemented in 0.18-μm CMOS technology. The frequency divider chain consists of a divide-by-4 divider, a divide-by-4/5 dual-modulus divider, a divide-by-16 counter, and digital control logic circuits. To speed up the operating frequency, a current mode logic (CML) divider without tail current source and a modified D-Flip-Flip (DFF) merged with NAND gate function are adopted. The multi-modulus frequency divider chain demonstrates high operating frequency of 7 GHz to 12 GHz while maintaining reasonable dc power consumption of 19.95 mW.
Keywords :
CMOS integrated circuits; current-mode logic; field effect MMIC; flip-flops; frequency dividers; microwave frequency convertors; CMOS technology; D-flip-flop; NAND gate function; current mode logic divider; digital control logic circuits; divide-by-16 counter; divide-by-4 divider; divide-by-4/5 dual-modulus divider; frequency 7 GHz to 12 GHz; multimodulus frequency divider; power 19.95 mW; size 0.18 mum; tail current source; CMOS integrated circuits; CMOS technology; Flip-flops; Frequency conversion; Frequency synthesizers; Logic gates; Power demand; Multi-modulus frequency divider; current mode logic (CML); high-speed prescaler;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2012 Asia-Pacific
Conference_Location :
Kaohsiung
Print_ISBN :
978-1-4577-1330-9
Electronic_ISBN :
978-1-4577-1331-6
DOI :
10.1109/APMC.2012.6421879
