Abstract
Abstract: We present detailed design, fabrication and characterization of In0.23Ga0.77As-based planar Gunn diodes in this paper. The devices have AlGaAs/InGaAs/AlGaAs heterojunctions that were grown on a semi-insulating GaAs wafer using molecular beam epitaxy technology. Electron beam lithography was used to define anode and cathode terminal patterns. Devices with various anode-cathode separations (e.g. 4-1.4 mu m) were fabricated on the same chip. Spectrum measurements showed oscillation frequencies between 36 GHz and 118 GHz in the fundamental transit-time mode of operation. These devices show great potential as millimeter wave and sub-millimeter wave signal sources for their small size, MMIC compatibility and lithographically controlled oscillation frequencies. (C) 2011 Elsevier Ltd. All rights reserved.
Original language | English |
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Pages (from-to) | 67-72 |
Number of pages | 6 |
Journal | Solid State Electronics |
Volume | 64 |
Issue number | 1 |
DOIs | |
Publication status | Published - Oct 2011 |
Keywords
- transferred-electron oscillators
- heterostructures
- frequency
- power
- band
- GHZ
- instability
- modulation
- HEMTS