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An inductorless frequency divider with 15GHz locking range using 90nm CMOS technology

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4 Author(s)
Heng-Ming Hsu ; Dept. of Electr. Eng., Nat. Chung-Hsing Univ., Taichung, Taiwan ; Yi-Te Chou ; Yo-Hao Hsu ; Yue-Shiang Shu

The work proposed an inductorless divider using ring oscillator topology to save chip area and enhance the locking range. The topology uses two techniques to enhance the transconductance (gm) for increasing locking range. To validate the proposed circuit, the chip was fabricated using TSMC 90nm CMOS technology. The core circuit only occupies an area of 70.3 ·80.15μm2. Measurement shows the input frequency sweeps from 22GHz to 37GHz and results in a 15GHz locking range.

Published in:

Circuits and Systems (ISCAS), 2012 IEEE International Symposium on

Date of Conference:

20-23 May 2012