A 0.6-2.7 GHz Semidynamic Frequency Divide-by-3 Utilizing Wideband RC Polyphase Filter in 0.18 mu m CMOS

作者：Kim Seungsoo^*; Shin Hyunchol

来源：IEEE Microwave and Wireless Components Letters, 2008, 18(10): 701-703.

DOI：10.1109/LMWC.2008.2003478

• Dynamic frequency divider
• polyphase filter

A wideband complementary metal-oxide semiconductor (CMOS) semidynamic frequency divide-by-3 covering more than two octave bandwidths is presented. The wideband operation without requiring a quadrature signal source is realized by employing a three-stage RC polyphase filter. The transfer function analysis on Type-II two- and three-stage polyphase filters is performed to provide analytic solutions of the peak phase error and peak attenuation. Implemented in 0.18 mu m CMOS, the divide-by-3 operates over the input frequency range between 0.6 and 2.7 GHz while dissipating 15 mA from a 1.8 V supply.

• 出版日期2008-10