Title :
Layout design of on-chip transformer with uniform variation of coil widths
Author :
Hsu, Heng-Ming ; Lai, Sih-Han ; Tseng, Chien-Wen ; Fu, Guan-Lin
Author_Institution :
Dept. of Electr. Eng., Nat. Chung Hsing Univ., Taichung, Taiwan
fDate :
Sept. 29 2009-Oct. 1 2009
Abstract :
A novel layout of variable width transformer is proposed to minimize the metal resistance in this study. Compared with reported paper (Hsu and Tseng, 2007), the sophisticated approach obtains a local minimum by equalizing the width ratio of primary and secondary coils. Two on-chip transformers with identical self inductance and chip area are fabricated to verify the proposed algorithm in CMOS technology. Measurement results demonstrate that the improvement of metal resistance approximates to the value of 10.36 %.
Keywords :
CMOS integrated circuits; coils; electric resistance; inductance; integrated circuit design; transformers; CMOS technology; chip area; coil width; layout design; metal resistance; on-chip transformer; self inductance; variable width transformer; Circuit stability; Coils; Conductivity; Current distribution; Equations; Inductance; Integrated circuit technology; Radio frequency; Robust stability; Time to market; Local minimum; and variable coil width; on-chip transformer; uniform variation;
Conference_Titel :
Microwave Conference, 2009. EuMC 2009. European
Conference_Location :
Rome
Print_ISBN :
978-1-4244-4748-0
