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Application of digital PGA technology to K-band microcircuit and microwave subsystem packages

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4 Author(s)
Hongwei Liang ; Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA ; H. L. Barnes ; J. Laskar ; D. Estreich

We present for the first time a low-cost high-performance pin grid array (PGA) packaging technology for K-band microcircuit and microwave subsystem packaging. The first-generation package demonstrates a 20 dB return loss to 8 GHz, and the second-generation package improves the return loss to 25 dB from DC to 26.5 GHz. We apply a comprehensive analysis method, which facilitates the optimization of the radio-frequency transition into the package. It combines the time-domain reflectometry analysis and frequency-domain full-wave analysis and reduces the optimization time significantly. The theoretical analysis is verified with measurement in both frequency and time domains. The results demonstrate that the low-cost PGA can be a much more cost-effective microwave packaging solution than the traditional deep cavity metal packages

Published in:

IEEE Transactions on Microwave Theory and Techniques  (Volume:48 ,  Issue: 12 )