2020
DOI: 10.1109/access.2020.2965823
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Frequency Multiplier and Mixer MMICs Based on a Metamorphic HEMT Technology Including Schottky Diodes

Abstract: This paper reports on the monolithic integration of layout-optimized Schottky diodes realized in an established 50-nm gate-length metamorphic high-electron-mobility transistor technology for use in multifunctional nonlinear circuits. The suitability of the realized Schottky diodes is demonstrated by a broadband millimeter-wave I/Q-mixer (In-phase/Quadrature) and local oscillator (LO) chain comprising two power amplifiers and a frequency tripler, fabricated on monolithic microwave integrated circuits (MMICs). B… Show more

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Cited by 7 publications
(7 citation statements)
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“…Having a metamorphic buffer layer and an indium phosphide (InP) epitaxial layer on a gallium arsenide (GaAs) substrate, mHEMT imparts additional advantages to each device such as excellent device characteristics, due to InP, and ease of processing due to GaAs. Recently, many reports on MMIC using mHMET have been reported, and foundry services, in which the mHEMT technology is used, have been conducted [10][11][12][13]. In this paper, we show the characteristics of a 0.1-μm mHEMT device manufactured by ETRI in-house mHEMT process with a 4-inch wafer.…”
Section: Introductionmentioning
confidence: 99%
“…Having a metamorphic buffer layer and an indium phosphide (InP) epitaxial layer on a gallium arsenide (GaAs) substrate, mHEMT imparts additional advantages to each device such as excellent device characteristics, due to InP, and ease of processing due to GaAs. Recently, many reports on MMIC using mHMET have been reported, and foundry services, in which the mHEMT technology is used, have been conducted [10][11][12][13]. In this paper, we show the characteristics of a 0.1-μm mHEMT device manufactured by ETRI in-house mHEMT process with a 4-inch wafer.…”
Section: Introductionmentioning
confidence: 99%
“… Cj()V={2.639999emCr()V14.5emV<aV0Cr()italicaV0+C'r()italicaV0()VaV00.6emV.45em.45emaV0 where α is a constant between 0 and 1, Cr ( V ) is given by Equation 2, and the extrapolation point is chosen as αV 0 . Equation 3 indicates that the junction capacitance keeps increasing linearly when the applied voltage V exceeds αV 0 , which is inconsistent with the actual C‐V characteristics of the diode 17 . On the other hand, the special effects of Schottky junction under terahertz frequency, such as saturation effect, will cause C‐V characteristics at terahertz frequencies to deviate from C‐V characteristics at DC condition.…”
Section: Modeling Of the Diode By Physical‐based Sddmentioning
confidence: 96%
“…As for the nonlinear part, which refers to the intrinsic Schottky junction, it is modeled directly by the SPICE model 13 of diode in Agilent's Advanced Design Systems (ADS). Based on the modeling methods above, depicted in Figure 1A, various frequency multipliers working at millimeter and terahertz band have been demonstrated successfully 13–17 . However, the modeling method directly based on SPICE model of diode still has some issues: Firstly, SPICE model adopts linear continuation for characterizing nonlinear junction capacitance of diode when the applied voltage exceeds the potential barrier voltage V bi , which is found to be inconsistent with the measured C‐V characteristics 18 .…”
Section: Introductionmentioning
confidence: 99%
“…The average drain efficiency (E avg ) can be defined as a function of the probability density (Prob(v)), output power (P out ðvÞ) and drain efficiency of PA (E(v)) where v is the supply drain voltage. The definition is as (2).…”
Section: Regression Dnn Design Parametersmentioning
confidence: 99%
“…Analog and radio frequency (RF) mixed-signal circuits could be very challenging and sophisticated designs due to the sensitivity of the performance figures to the used transistors [1,2]. Simulation, modeling, layout generation, and verification of complex designs are becoming more and more complicated [3] due to the nonlinear behavior of active devices such as high-electron-mobility transistors (HEMTs).…”
Section: Introductionmentioning
confidence: 99%