A 2.4GHz low phase noise frequency synthesizer for WiMAX applications

IEICE Electronics Express

Ko-Chi Kuo¹ 

[1] Department of Computer Science and Engineering, National Sun Yat-sen University

关键词: LC-VCO;    frequency synthesizer;   

DOI  :  10.1587/elex.8.938

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(8)Cited-By(2)This paper presents a low phase noise frequency synthesizer for WiMAX applications. The operating frequency of the proposed design ranges from 2.2GHz to 2.4GHz with a 1.25MHz spacing for the 1.25MHz to 40MHz channel bandwidth. The proposed VCO suppresses the phase noise effectively by adopting the Q-enhancement technique, the memory reduced tail current, and a noise filter. The high speed frequency divider is implemented by an improved TSPC D-flip-flop. The proposed design is fabricated in a TSMC 0.18µm CMOS 1P6M process. The measured phase noise is -118Bc/Hz at an offset of 1MHz from the center frequency. The fabricated chip consumes 25.5mW with a 1.5V supply and occupies a 1.1mm2 die area.

【 授权许可】

Unknown