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Design of an X-band broad-band lumped-element quadrature hybrid

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6 Author(s)
Fangyue Ma ; Zhejiang-California Int. Nanosystem Inst., Zhejiang Univ., Hangzhou, China ; Yangyang Peng ; Xiaoying Wang ; Saier Liu
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A method for synthesizing a two-section inductively-coupled lumped-element quadrature hybrid for broad-band applications is first proposed. Based on this analysis, a two-section inductively-coupled lumped-element quadrature hybrid operated at X-band is presented. The measured magnitude imbalance and phase difference are 2.4dB and 90°± 4° over the frequency band of 8-12GHz, respectively. Results show good agreement with the theoretical predictions.

Published in:

Integrated Circuits (ISIC), 2011 13th International Symposium on

Date of Conference:

12-14 Dec. 2011