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High-Quality Bondwire Integrated Transformer  

Song, Byeong-Uk (Dept.of Electronics Engineering, Ajou University)
Lee, Hae-Yeong (Dept.of Electronics Engineering, Ajou University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.39, no.2, 2002 , pp. 81-91 More about this Journal
Abstract
In this paper, a high-quality integrated transformer using bondwires is proposed and fabricated. The bondwire transformer inherently has low conductor loss due to wide cross-section and small parasitic capacitance because the vertical placement of the bondwire loop separates from substrate and effectively reduces the substrate effects. It can be fabricated easily by used of the modern automatic wirebonding technology. The electrical characteristics of the fabricated transformers are compared with those of the spiral transformer It is expected that the bondwire transformer can improve the performance for RFIC and MMIC applied to a variety of application, for example, Mixer, Balanced Amplifier, VCO, and LNA.
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