Bögelsack, F., Wolff, I.
Full-Wave Analysis of Multiport Microstrip Discontinuities Using a Superposition Principle and Mode-Matching Techniques.
International Journal Of Numerical Modelling: Electronic Networks, Devices And Files, Vol. 3, 1990, 259-268

Klaassen, A.; Barth, H.; Menzel, W.
Effektiver Entwurf und Aufbau von mm-Wellen-Hohlleiter-Bandpaß-Filtern.
MIOP'90, 1990

Menzel, W.
Passive and active mm-wave devices.
MITEKO '90, Pardubice, CSFR, 1990

Menzel, W.
Millimeter-wave components and systems.
URSI General Assembly, Prague, JS26, 1990

Menzel, W.; Grabherr, W.
Coplanar waveguide short circuit with finite metallization thickness.
20th European Microwave Conference, Budapest, 1990, 1187-1192

Schmidt, L.-P.; Menzel, W.; Adelseck, B.; Güttich, U.
Millimeter-Wave Monolithic Circuits.
ESA Conference Proceedings, WPP-014, Int. Workshop on Monolithic Microwave Integrated Circuits for Space Applications, 1990

Schwab, W.; Menzel, W.
A spectral domain method for the full wave analysis of a microstrip-to-slotline transition.
15th Int. Conf. on Infrared and Millimeter Waves, Orlando (Fl.), USA, 1990, 634-637