Year	1999
Authors	Chang, Chi-Yang
Paper Title	C. Y. Chang, and C. C. Yang, "A novel broad-band Chebyshev response rat-race ring coupler", IEEE Trans. on Microwave Theory and Tech., Vol. 47, No. 4, pp 455-462, April 1999. (NSC-87-2213-E009-107), 1999年04月
Date of Publication	1970-01-01