JIANG Zhen-xin, DING Gui-fu, YANG Chun-sheng, et al. Novel Correction Formula of Strip Width for CPW with Nonzero Metallization Thickness[J]. Acta Electronica Sinica, 2004, 32(9): 1532-1535.
DOI:
JIANG Zhen-xin, DING Gui-fu, YANG Chun-sheng, et al. Novel Correction Formula of Strip Width for CPW with Nonzero Metallization Thickness[J]. Acta Electronica Sinica, 2004, 32(9): 1532-1535.DOI:
Novel Correction Formula of Strip Width for CPW with Nonzero Metallization Thickness
结果表明新公式的误差降到K C 格普塔公式的13.0~31.3%.新公式更有利于精确设计金属厚度效应不可忽略的共面波导.
Abstract
Approximate conformal mapping technique has been employed to analyze the effect of finite metellization thickness of CPW theoretically
therefore numerical computations and some corresponding numerical processes are carried out.As a result
a new accurate correction formula of strip width is presented.In addition
the closed form formulas of characteristic impedance and attenuation are derived from it.Finally
the computation results based on these new formulas are compared with those of K.C.Gupta formula's and experimental values.It shows that the errors of new formulas are dramatically decreased
which are only 13.0~31.3% of K.C.Gupta formula's.This results suggest that the new formulas will play an important role in characterizing CPW precisely instead of K.C.Gupta formula.