1. Properties of ridge waveguide;Cohn;Proc. IRE.,1947
2. The design of ridge waveguides, IRE;Hopfer;Trans. Microwave Theory Tech.,1955
3. The ultra-bandwidth finline coupler;Robertson;Proc. IRE,1955
4. 100-GHz-band low-noise mixer;Konishi,July 1971
5. Two new integrated-circuit media with special advantages at millimeter wavelengths;Meier,1972