New algorithms of the TSM and TOM methods for calibrating microwave test fixtures

Based on the conventional through-short-match (TSM) method, an improved TSM method has been proposed in this Letter. This method gives an analytical solution and has almost all the advantages of conventional TSM methods. For example, it has no phase uncertainty and no bandwidth limitation. The experimental results show that the accuracy can be significantly improved with this method. The proposed theory can be applied to the through-open-match (TOM) method. (C) 2002 Wiley Periodicals. Inc.

SO(n)规范势的可分解理论

使用几何代数方法 ,研究了n维紧致黎曼流形上SO(n)规范势 (自旋联络 )的一般分解理论 ,建立了SO(n)规范场用球丛上单位矢量场n分解的一般表达式 .由此 ,分别得到了U(1 )规范场和U(2 )规范场用单位矢量场n分解的一般形式 .