年度	1991
全部作者	张志扬(109.2退休)
论文名称	C. Y. Chang, and T. Itoh, "A modified parallel-coupled filter structure that improves the upper stopband rejection and response symmetry", IEEE Trans. on Microwave Theory and Tech., Vol. 39, No. 2, pp 310-314, 1991年02月
发表日期	1970-01-01