MOVPE-grown millimeter-wave InGaAs mixer diode technology and characteristics phil marsh Article

Pavlidis, D. (1997). MOVPE-grown millimeter-wave InGaAs mixer diode technology and characteristics phil marsh . IEEE TRANSACTIONS ON ELECTRON DEVICES, 44(7), 1066-1075. 10.1109/16.595933

cited authors

  • Pavlidis, D

abstract

  • The merits of InGaAs-based millimeter-wave mixer diodes are explored experimentally and theoretically. Schottky junctions on InGaAs exhibit barriers ((f>t,) in the neighborhood of 0. 25 eV. The high mobility of InGaAs contributes to the low n+ sheet resistances of 1. 9-5 £7/square for 1-jum n+ InGaAs layers (ns - 1. 5 x 1019 cm"3, fin - 1800 cm2/V s) grown with our in-house Metalorganic Vapor Phase Epitaxy (MOVPE) system. The design, material growth, fabrication, and characterization of InGaAs integrated mixer/antennae are reported. Pt plating technology, adapted here for InGaAs Schottky contacts, has improved the ideality factor (?/) and yield relative to conventional evaporated Pt. With 810 /uW of local oscillator power, applied to the diode, and zero DC bias, an integrated InGaAs mixer/antenna demonstrated an excellent diode performance of 199 K RF input double-sideband noise temperature with a corresponding singlesideband (SSB) conversion loss (Lc) of 5. 0 dB at LO, RF, and IF frequencies of 94 GHz, 94 GHz ±1. 4 GHz, and 1. 4 GHz, respectively. Likewise, the diodes in an InGaAs subharmonic integrated mixer/antenna demonstrated an equivalent RF-port double-sideband (DSB) noise temperature (Tmix) of 1058 K and single-sideband conversion loss of 10. 2 dB at 180 GHz with a 90-GHz LO power (FLO) of 1. 6 mW. Compared to GaAs diodes with RF coupling and IF losses removed, the single-ended InGaAs noise temperature results were within 46-100 K of those for stateof-the-art GaAs mixer diodes while requiring significantly less LO power. © 1997 IEEE.

publication date

  • December 1, 1997

published in

Digital Object Identifier (DOI)

start page

  • 1066

end page

  • 1075

volume

  • 44

issue

  • 7