Wide-locking range LC-tank divide-by-4 injection-locked frequency divider using transformer feedback

2015 ◽  
Vol 25 (7) ◽  
pp. 557-562 ◽  
Author(s):  
Sheng-Lyang Jang ◽  
Jhin-Fang Huang ◽  
Fa-Bo Lin
2013 ◽  
Vol 1 (2) ◽  
pp. 62-68
Author(s):  
Sheng-Lyang Jang ◽  
Jhin-Fang Huang ◽  
Chong-Wei Huang ◽  
Ching-Wen Hsue ◽  
Chia-Wei Chang

2015 ◽  
Vol 25 (02) ◽  
pp. 1650013 ◽  
Author(s):  
Wanhang Gao ◽  
Wei Zhang ◽  
Yanyan Liu

A direct divide-by-2/3 LC injection-locked frequency divider (ILFD) is presented in this paper. The proposed ILFD circuit is based on a CMOS LC tank oscillator coupled with an injection NMOS transistor in series with an inductor. Together with body-biased technique and current-reused topology, the locking range of the ILFD is improved and the power consumption is reduced. The circuit is implemented in a 0.18[Formula: see text][Formula: see text]m standard RF CMOS process. At the incident power of 0[Formula: see text]dBm, the measured locking range of the divide-by-2 and divide-by-3 modes are from 5.37[Formula: see text]GHz to 7.68 (8.07[Formula: see text]GHz to 11.4[Formula: see text]GHz) GHz, and the core circuit without buffers consumes 3[Formula: see text]mW at the supply voltage of 1.5[Formula: see text]V. The chip only occupies [Formula: see text] without the pads and the buffers.


2008 ◽  
Vol 43 (4) ◽  
pp. 991-998 ◽  
Author(s):  
Qun Gu ◽  
Zhiwei Xu ◽  
Daquan Huang ◽  
Tim LaRocca ◽  
Ning-Yi Wang ◽  
...  

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