Retraction: “Reduced-sized single coupled line low-pass filter,” by J. D. Tseng and P. S. Chen
2011 ◽
Vol 116
◽
pp. 553-567
◽
2007 ◽
Vol 49
(3)
◽
pp. 612-615
◽
2019 ◽
Vol 8
(3)
◽
pp. 6944-6951