Phase Coherent Frequency Divider

Tech ID: 21684 / UC Case 2005-369-0


Phase-coherent differential structures contain a phase-coherent transformer having two pairs of phase-coherent coupled differential inductors.

Patent Status

Country Type Number Dated Case
United States Of America Issued Patent 8,775,984 07/08/2014 2005-369
United States Of America Issued Patent 7,886,239 02/08/2011 2005-369

Related Materials

  • Huang et al.; A phase-coherent transformer enabled 2:1 frequency divider with 7dB phase noise reduction and speed×gain/power F.O.M. of 2×10 (pico-Joule)-1: Publication Year: 2005; VLSI Circuits, 2005. Digest of Technical Papers. 2005 Symposium on; pp. 82-85.
  • Laskinet al.; “Low-Power, Low-Phase Noise SiGe HBT Static Frequency Divider Topologies up to 100 GHz”; Publication Year: 2006; Bipolar/BiCMOS Circuits and Technology Meeting, 2006; pp. 1-4.
  • Taniguchi et al.; “A 2 GHz-band self frequency dividing quadrature mixer”; Publication Year: 2005; Radio Frequency integrated Circuits (RFIC) Symposium, 2005. Digest of Papers. 2005 IEEE; pp. 505-508.


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  • Chang, Mau-Chung Frank

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