Verilog-A Modeling of Ferroelectric High-K Capacitors for Tunable Circuit Applications

Jamil, Asad; Kalkur, T. S.; Cramer, N.

doi:10.1080/10584580490895013

Cited by 14 publications

(2 citation statements)

References 4 publications

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“…The capacitance (a) and equivalent resistance (b) of the varactor at 300 K. (Table I). where x ¼ 2pf, the apparent permittivity e ap (E, T) and loss tangent tan d ap (E, T, x) are given (7) and (9). e o ¼ 8.85 Â 10 À12 F/m.…”

Section: A Capacitancementioning

confidence: 99%

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CAD oriented frequency, temperature, and DC bias dependent small-signal, scalable circuit model of parallel-plate paraelectric varactors

Gevorgian

Deleniv

Vorobiev

et al. 2009

Int J RF and Microwave Comp Aid Eng

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Simple, CAD compatible small-signal scalable circuit model for the thin film parallel-plate ferroelectric varactors is reported. It is based on the measured permittivity and loss tangent of the ferroelectric films along with the fundamental theoretical relationships of ferroelectrics in paraelectric phase. The model makes use of the measured DC field (voltage) at the inflection point of the C-V curve where the nonlinearity (dC/dV) and the tunability are maximum. Both the capacitance and the equivalent loss resistance (dielectric losses) in the ferroelectric film take into account the low permittivity layers at the boundaries of the nano-columns of the film. The frequency dependent losses in the top and bottom plates of the varactors and the parasitic inductance of the plates are also taken into account. The model is valid for ferroelectric films having columnar structure. It is useful in wide temperature, DC field, and frequency ranges.

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Section: A Capacitancementioning

confidence: 99%

“…The successful system applications of these varactors very much depend on the availability of the scalable circuit models, compatible with the commercial circuit simulators (CADENCE, ADS etc.). Recently proposed simple models of DC bias capacitance [7,8] and impedance [9] partly address the problem. The approximations proposed in Refs.…”

Section: Introductionmentioning

confidence: 99%

CAD oriented frequency, temperature, and DC bias dependent small-signal, scalable circuit model of parallel-plate paraelectric varactors

Gevorgian

Deleniv

Vorobiev

et al. 2009

Int J RF and Microwave Comp Aid Eng

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Mahanfar

Bila

Aubourg

et al. 2009

Int J RF and Microwave Comp Aid Eng

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Modeling ferroelectric capacitors based on the dipole switching theory

Wang¹,

Yu²,

Wang³

et al. 2007

Journal of Applied Physics

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In this paper, we derived a compact model for the description of the P–E hysteresis behavior based on the dipole switching theory. Simulation results show good agreement with the experiment for various hysteresis loops, and the mathematical description can be easily combined with an electronic design automation software for circuit simulation. Therefore, the model can be used for both circuit simulation and providing better intuition for the ferroelectric material behavior.

show abstract

Verilog-A Modeling of Ferroelectric High-K Capacitors for Tunable Circuit Applications

Cited by 14 publications

References 4 publications

CAD oriented frequency, temperature, and DC bias dependent small-signal, scalable circuit model of parallel-plate paraelectric varactors

CAD oriented frequency, temperature, and DC bias dependent small-signal, scalable circuit model of parallel-plate paraelectric varactors

Untitled

Modeling ferroelectric capacitors based on the dipole switching theory

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