1Rohde U L. Microwave and wireless synthesizers[M]. New York: John Wiley & Sons Inc, 1997.
2Park C H, Kim O, Kim B. A 1.8-GHz self-calibrated phase-locked loop with precise I/Q matching [J].IEEE J Sol Sta Circ, 2001; 36(5): 777-783.
3Calbaza D E, Savaria Y. Direct digital frequency synthesis of low-jitter clocks [J]. IEEE J Sol Sta Circ, 2001; 36(3): 570-572.
4Yamagishi A, Ishikawa M, Tsukahara T. A 2-V,2-GHz low-power direct digital frequency synthesizer chip-set for wireless communication [J]. IEEE J SolSta Circ, 1998; 33(2): 210-217.
