Compensation and Design for Bonding-Wire at High Frequency Band
Date Issued
2005
Date
2005
Author(s)
Chang, Hsiang-Chih
DOI
en-US
Abstract
To improve the electrical performance of the bonding-wire transition, a step by step procedure is proposed in this thesis. To begin with, the equivalent circuit of the transition is extracted from the full-wave simulation result by HFFS, which shows an overall inductive effect. Then, a matching circuit which resembles a resonant phenomenon is proposed to achieve minimum reflection in the desired frequency band by simply changing the length and width of the additional transmission line. The extra relative bandwidth, when insertion loss is lower than -13dB, is 37% when the resonant frequency is set to be 40GHz. Another is low impedance line compensation. It doesn’t increase the bandwidth but let the return loss better in low frequency bands. The other is multi-line compensation, this one have the broadest bandwidth, says -15db, from DC to 60GHz in this chapter. But it is hard and complex to design.
In order to have a wider bandwidth and better response, it needs some essential compensation. In chapter 4, it tries to enlarge the capacitances locally. For example, the return loss is set to be -20dB and the bandwidth are as large as possible. Structures which are list in chpater4 all have improvement of additional relative bandwidth at least 40%. This result means that the compensation is useful and easy to design. Then, add a short transmission line, the return loss the tradeoff for bandwidth. The example in chapter5, its bandwidth is 47GHz after compensation for an excess relative bandwidth of 200%.The experiment in chapter5 also has an additional bandwidth about 50%. This is reasonable since both the substrate1 and 2 are the same material and the discontinuity is already small before compensation.
Subjects
鎊線
補償
bonding-wire
compensation
Type
thesis
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