GaAs TUNNETT diodes on diamond heat sinks for 100 GHz and above

Author

Eisele, H. ; Haddad, G.I.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA

Volume

43

Issue

1

fYear

1995

fDate

1/1/1995 12:00:00 AM

Firstpage

210

Lastpage

213

Abstract

Single-drift GaAs TUNNETT diodes were mounted on diamond heat sinks for improved thermal resistance and evaluated around 100 GHz in a radial line full height waveguide cavity. The diodes were fabricated from MBE-grown material originally designed for diodes that operate in CW mode around 100 GHz on integral heat sinks. An RF output power of more than 70 mW with a corresponding DC to RF conversion efficiency of 4.9% was obtained at 105.4 GHz. This is the first successful demonstration of GaAs TUNNETT diodes mounted on diamond heat sinks. To the authors´ knowledge, these DC to RF conversion efficiencies and RF power levels are the highest reported to date from TUNNETT diodes and exceed those of any single discrete device made of group III-V materials (GaAs, InP, etc.) at this frequency. Free-running TUNNETT diode oscillators exhibit clean spectra with an excellent phase noise of less than -94 dBc/Hz, measured at a frequency off-carrier of 500 kHz and an RF output power of 40 mW

Keywords

III-V semiconductors; diamond; gallium arsenide; heat sinks; millimetre wave diodes; transit time devices; tunnel diodes; 100 to 105.4 GHz; 4.9 percent; 40 mW; 70 mW; C; CW mode; DC/RF conversion efficiency; GaAs; MBE-grown material; TUNNETT diodes; diamond heat sinks; free-running diode oscillators; phase noise; radial line full height waveguide cavity; single-drift diodes; thermal resistance; Diodes; Frequency conversion; Gallium arsenide; Heat sinks; III-V semiconductor materials; Indium phosphide; Power generation; Radio frequency; Resistance heating; Thermal resistance;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.362989

Filename

362989