Title :
High efficiency and output power from second- and third-harmonic millimeter-wave InP-TED oscillators at frequencies above 170 GHz
Author_Institution :
Dept. of Radio & Space Sci., Chalmers Univ. of Technol., Goteborg, Sweden
Abstract :
InP TED (transferred electron device) oscillators have been experimentally investigated for frequencies between 170 and 279 GHz. It has been found that output powers of more than 7 and 0.2 mW are possible at 180 and 272 GHz using second- and third-harmonic mode operation, respectively. Conversion efficiencies of more than 13% and 0.3% between fundamental and second harmonic and fundamental and third harmonic, respectively, have been found. The conversion efficiencies are comparable to GaAs TEDs. The output powers, conversion efficiencies, and tuning ranges (more than 22%) are the biggest reported for InP TEDs at these frequencies. The output power at third harmonic was sufficient for supplying a superconducting mixer with local oscillator power.<>
Keywords :
Gunn oscillators; III-V semiconductors; harmonic generation; indium compounds; 0.2 mW; 0.3 percent; 13 percent; 170 to 279 GHz; 7 mW; InP oscillators; MM-wave operation; TED oscillators; conversion efficiencies; local oscillator power; output power; output powers; second-harmonic mode; superconducting mixer; third-harmonic mode; tuning ranges; Doping; Frequency conversion; Gallium arsenide; Heat sinks; Indium phosphide; Oscillators; Power generation; Space technology; Tuning; Voltage;
Journal_Title :
Electron Device Letters, IEEE
