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A 1V 50 GHz digital-controlled CMOS frequency divider

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3 Author(s)
Shuen-Yin Bai ; Nat. Taiwan Univ., Taipei ; Tang-Nian Luo ; Yi-Jan Chen

This paper presents a 50GHz wide operation range frequency divider implemented in 0.18 mum CMOS technology. The frequency divider adopted direct-injection-locked topology which features high speed capability. The body-source- connected NMOS switch transistor is coupled to the LC-tank to improve the locking range of the frequency divider. The wide frequency range from 41.5 GHz to 52 GHz is divided into four operating bands and the resonant frequency of the LC tanks is controlled by two digital bits. Powered by IV supply, the frequency divider consumes 8 mW with 10.5 GHz operation range. The core size of the frequency divider is 200 mum x 320 mum.

Published in:

Microwave Conference, 2006. APMC 2006. Asia-Pacific

Date of Conference:

12-15 Dec. 2006