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Fast-switching frequency synthesizer with a discriminator-aided phase detector

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2 Author(s)
Ching-Yuan Yang ; Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan ; Shen-Iuan Liu

A phase-locked loop (PLL) with a fast-locked discriminator-aided phase detector (DAPD) is presented. Compared with the conventional phase detector (PD), the proposed fast-locked PD reduces the PLL pull-in time and enhances the switching speed, while maintaining better noise bandwidth. The synthesizer has been implemented in a 0.35-/spl mu/m CMOS process, and the output phase noise is -99 dBc/Hz at 100-kHz offset. Under the supply voltage of 3.3 V, its power consumption is 120 mW.

Published in:

IEEE Journal of Solid-State Circuits  (Volume:35 ,  Issue: 10 )