Electro-Thermal Model for Schottky Barrier Diode Based on Self-Heating Effect

Cui, Jianhang; Zhang, Yong; Wei, Haomiao; Wu, Qian; Mao, Shuman; Xu, Yuehang; Yan, Bo; Xu, Ruimin

doi:10.1109/icece54449.2021.9674655

Cited by 6 publications

(2 citation statements)

References 13 publications

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“…The advantage of this structure is that it reduces the number of computational grids to speed up the simulation. The individual diode thermal analysis is convenient in [25,26]. However, the heat flow of the packaging diode is crucial to analyzing the overall temperature distributions and optimizing the thermal flow from the anodes to the waveguide block.…”

Section: D-em and Steady-state Thermal Modelmentioning

confidence: 99%

Electro-Thermal Design for Broadband Balanced Terahertz Tripler

Wei

Zhang

Cui

et al. 2022

Preprint

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This paper presents a comprehensive electro-thermal (E-T) design method applied to the circuit design of the multipliers, which intends to improve the design flexibility and simulation reliability of the broadband frequency multiplier.The design method is divided into two steps: a self-consistent electro-thermal model and an external matching circuit. The self-consistent electro-thermal model consists of three parts: the steady-state thermal model, the thermal separation variable model, and the three-dimensional (3-D) electromagnetic (EM) model. The electro-thermal model is suitable for application in hybrid integrated circuit, because the thermal correction is only carried in simulation. There is no additional diode and temperature-controlled equipment cost in thermal parameters extraction. Then, a formula-based impedances network named linear embedding impedances is set as external wideband response instead of single frequency point embedding impedance. This two-step design method enables the nonlinear I-V thermal correction, circuit matching design and their coupling simulation in circuit level. Based on the design approach, a balanced 225–300 GHz frequency tripler with AlN substrate has been designed and manufactured. The output consistency of simulated and measured results reachs up to 82% and the S11 basically better than -10 dB across the wideband of 225-300 GHz.

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Section: D-em and Steady-state Thermal Modelmentioning

confidence: 99%

Electro-Thermal Design for Broadband Balanced Terahertz Tripler

Wei

Zhang

Cui

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…The individual diode thermal analysis is convenient in [28,29]. However, the heat flow of the packaging diode is crucial to analyzing the overall temperature distributions and optimizing the thermal flow from the anodes to the waveguide block.…”

Section: E-t Model With Thermal Effectsmentioning

confidence: 99%

Accurate Broadband Balanced Terahertz Tripler Design with Thermal and High-Frequency Effects

Wei

Zhang

Cui

et al. 2022

Preprint

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This paper presents an accurate design method applied to the terahertz broadband multipliers. The design method is divided into two steps: a self-consistent electro-thermal (E-T) model with frequency-dependent spreading resistance and an external matching circuit. The self-consistent electro-thermal model consists of three parts: the steady-state thermal model, the electro-thermal diode circuit model, and the three-dimensional (3-D) electromagnetic (EM) model. The steady-state thermal model and the electro-thermal diode circuit model are used to express the thermal effects of diode. In particular, in the EM model, a frequency-dependent spreading resistance is obtained by the fitting conductivity of actual doped buffer layers and extracted by the auxiliary circuit structures, which is used to express the high-frequency effects. Then, the external matching circuit is designed carefully to match external wideband response instead of single frequency point load-pull. Based on the design approach, a balanced 225–300 GHz frequency tripler with AlN substrate has been designed and manufactured. By introducing the high frequency spreading resistance, a better simulated-measured consistency is achieved compared to the single E-T model, no matter low input power (80 mW) or high input power (160 mW) condition.

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A 225–300 GHz broadband frequency tripler using accurate series resistance model

Wei,

Zhang,

Cha

et al. 2024

Micro & Optical Tech Letters

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This paper proposed an accurate series resistance model tailored for Schottky diode‐based terahertz multipliers. Compared to the conventional electrothermal model (E‐T model) only considering thermal effects, this model comprehensively accounts for both thermal and frequency effects of the series resistor components, including the temperature‐dependent epilayer resistance (Repi) and the temperature‐frequency‐dependent spreading resistance (Rspreading). The evaluation of thermal effects relies on steady‐state thermal simulation and the corresponding electrothermal model. Notably, the frequency‐dependent spreading resistance part is derived from the fitting conductivity of doped buffer layers and extracted by auxiliary three‐dimensional electromagnetic simulations. Based on this model, a balanced 225–300 GHz frequency tripler with AlN substrate has been designed and manufactured. By introducing this model, a significant improvement in the consistency between simulated and measured results has been achieved compared to the single E‐T model, regardless of whether the input power is low (80 mW) or high (160 mW).

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Electro-Thermal Model for Schottky Barrier Diode Based on Self-Heating Effect

Cited by 6 publications

References 13 publications

Electro-Thermal Design for Broadband Balanced Terahertz Tripler

Electro-Thermal Design for Broadband Balanced Terahertz Tripler

Accurate Broadband Balanced Terahertz Tripler Design with Thermal and High-Frequency Effects

A 225–300 GHz broadband frequency tripler using accurate series resistance model

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