High Performance Submicron RTD Design for mm-Wave Oscillator Applications

Konferenz: IPRM 2011 - 23th International Conference on Indium Phosphide and Related Materials
22.05.2011 - 26.05.2011 in Berlin, Germany

Tagungsband: IPRM 2011

Seiten: 4Sprache: EnglischTyp: PDF

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Kamgaing, A. Tchegho; Muenstermann, B.; Geitmann, R.; Benner, O.; Blekker, K.; Prost, W.; Tegude, F. J. (University Duisburg-Essen, Solid State Electronics Department, Germany)

An optimization of the resonant tunnelling diode’s design was done in order to increase the high frequency performance by increasing the current density and minimizing the parasitic small signal parameters like series resistance and intrinsic parallel capacitance. The current density increased by thinning the lower doped contact layers (up to JP ? 495 kA/cm2). The modelling of the optimized devices was also successful. It is found that the advantage of higher current density and therefore higher available power density outweighs increased device capacitance due to the removal of the lower doped contact layer with respect to high frequency performance. The optimum RTD design has 50% lower capacitance at similar DC-operating point, 65% higher available RF-power and an increased cut off frequency up to 420 GHz.