@article{RudolphDoernerHeymann, author = {Rudolph, Matthias and D{\"o}rner, Ralf and Heymann, Peter}, title = {Multiharmonic Generators for Relative Phase Calibration of Nonlinear Network Analyzers}, language = {en} } @article{RudolphDoernerKlapprothetal., author = {Rudolph, Matthias and D{\"o}rner, Ralf and Klapproth, L. and Heymann, Peter}, title = {An HBT Noise Model Valid up to Transit Frequency}, language = {en} } @article{RudolphDoernerHeymann, author = {Rudolph, Matthias and D{\"o}rner, Ralf and Heymann, Peter}, title = {Harmonic Tuning of Power Transistors by Active Load-Pull Measurement}, language = {en} } @article{RudolphDoernerHeymann, author = {Rudolph, Matthias and D{\"o}rner, Ralf and Heymann, Peter}, title = {Direct Extraction of HBT Equivalent Circuit Elements}, language = {en} }