Analysis and design of on-chip transformers for LTE/WiMAX

作者：Zhang, Hua-Bin; Cai, Min; Wu, Hai-Jun; Li, Zheng-Ping

来源：Journal of University of Electronic Science and Technology of China, 2014, 43(3): 363-368.

DOI：10.3969/j.issn.1001-0548.2014.03.008

• LTE/WiMAX
• Lumped parameter modeling
• Octagonal
• On-chip transformer
• Radio frequencies

Transformer is a key device in radio frequency communication circuit, which can directly effect on the performance of the RF front-end circuit. However, there is not transformer in TSMC 0.13 m RF CMOS mixed-signal process library. In order to solve this problem, an octagonal transformer which is applied in LTE/WiMAX is designed and fabricated by the analysis of all kinds of on-chip transformer performance, and the frequency-independent lumped-element equivalent circuit model and the parameter-extracted expressions are given. The measurement results show that L and Q have excellent agreement with the measured data from the frequency range of 0.1 GHz to 10 GHz, and coupling coefficient K is perfect. The successful design of the transformer will contribute to the development and application of 4G communication chips.

• 出版日期2014-5
• 单位华南理工大学; 电子科技大学