Modeling of Schottky barrier diode millimeter-wave multipliers at cryogenic temperatures

Johansen, Tom K.; Rybalko, A. A.; Zhurbenko, Vitaliy; Bowen, Sean; Hesler, Jeffrey L.; Ardenkjær‐Larsen, Jan Henrik

doi:10.1109/imoc.2015.7369088

Cited by 4 publications

(4 citation statements)

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“…In this paper, the performance of GaAs Schottky-based multipliers at cryogenic temperatures are studied. The paper expands on the author's previous study [6] on the efficiency at cryogenic temperatures for a 78 GHz frequency doubler reported in the literature [7]. The paper is structured as follows.…”

Section: Introductionmentioning

confidence: 87%

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A comprehensive study of cryogenic cooled millimeter-wave frequency multipliers based on GaAs Schottky-barrier varactors

Johansen

Rybalko

Zhurbenko

et al. 2018

Int. J. Microw. Wireless Technol.

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The benefit of cryogenic cooling on the performance of millimeter-wave GaAs Schottky-barrier varactor-based frequency multipliers has been studied. For this purpose, a dedicated compact model of a GaAs Schottky-barrier varactor using a triple-anode diode stack has been developed for use with a commercial RF and microwave CAD tool. The model implements critical physical phenomena such as thermionic-field emission current transport at cryogenic temperatures, temperature dependent mobility, reverse breakdown, self-heating, and high-field velocity saturation effects. A parallel conduction model is employed in order to include the effect of barrier inhomogeneities which is known to cause deviation from the expected I--V characteristics at cryogenic temperatures. The developed model is shown to accurately fit the I--V --T dataset from 25 to 295 K measured on the varactor diode stack. Harmonic balance simulations using the model are used to predict the efficiency of a millimeter-wave balanced doubler from room to cryogenic temperatures. The estimation is verified experimentally using a 188 GHz balanced doubler cooled down to 77 K. The model has been further verified down to 14 K using a 78 GHz balanced doubler.

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Section: Introductionmentioning

confidence: 87%

“…A first-order thermal network, similar to the one described in [6], is included into our model formulation to simulate self-heating effects.…”

Section: Self-heatingmentioning

confidence: 99%

A comprehensive study of cryogenic cooled millimeter-wave frequency multipliers based on GaAs Schottky-barrier varactors

Johansen

Rybalko

Zhurbenko

et al. 2018

Int. J. Microw. Wireless Technol.

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“…The graph in Figure shows estimated using the model described in Ref. and measured efficiency versus temperature.…”

Section: Comparison Of Estimated and Measured Datamentioning

confidence: 99%

A cryogenic measurement setup for characterization microwave devices

Rybalko

2017

Micro & Optical Tech Letters

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A cryogenic measurement setup for characterization microwave devices from room to cryogenic temperatures is presented. The setup allows testing microwave devices at variable temperatures ranging from 300 to 77 K. Frequency doubler (94/188 GHz) has been cooled to 77 K and peak efficiency of 32% at an input‐power level of 207 mW is achieved. For verification experimental results the millimeter‐wave GaAs Schottky barrier diode model is developed for CAD simulator. The simulated peak efficiency is 37% at 77 K. The estimation of simulated and measured data of the doubler efficiency versus temperature has the same trend from 77 to 300 K which confirmed the cryogenic measurement setup applicability.

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“…One of the examples is dynamic nuclear polarization (DNP) systems, where polarization efficiency relies on availability of millimeter-wave radiation [1]. This work presents a family of doublers covering frequency bands which are of interest for 3.35 T and 6.7 T DNP systems [2] and is a first step towards partially integrating millimeter-wave sources into DNP cavities. The circuits are designed for low insertion loss and fabricated in a high-speed InP DHBT circuit technology [3] developed at III-V Lab.…”

Section: Introductionmentioning

confidence: 99%