A novel approach to co-design microwave devices with distributed switches

Allanic, Rozenn; Quéré, Yves; Berre, Denis Le; Quendo, Cédric

doi:10.1109/apmc.2016.7931369

“…The measurements that include microwaves were Fig. 11 Calculated V-I curves compared to pure DC measurements taken more than two years back as reported in [7]. In the second episode of pure DC measurements, unfortunately, the ASB pertaining to L 1 was found damaged.…”

Section: E the Case Of Pure DCmentioning

confidence: 99%

“…Topology of the Diode Fig. 1 shows different views of a typical distributed diode to be used in shunt configuration for microwave applications [7]. On top of a high resistivity silicon (HR-Si), Boron doped P-Type substrate, phosphorus doped N + region is layered to form a N + P junction.…”

Section: The Distributed Diodementioning

confidence: 99%

“…In conductivity modulation, the resistivity or conductivity of the bulk is said to get changed or modulated as a function of the diode current. Since our model uses a parallel bulk resistance, its resistivity, shown in (7), is modulated, or made dynamic, as a function of the diode voltage V where V N = V/V o is the diode voltage normalized over V o = 1 V. Formulation of this function may get influenced by several factors like doping concentrations, geometry, temperature and so on. Fig.…”

Section: Adjusting the Shape Of Curvesmentioning

confidence: 99%

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A DC Circuit Model of Distributed Diodes on Active Substrate Boards for CAD Tools

Chakravorty¹

2021

Preprint

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In the past few years, a new type of circuit board, named here as active substrate board (ASB), was introduced over circuit applications of diodes. Unlike a traditional printed circuit board (PCB), an ASB has its substrate made of a semiconductor. The inability of the traditional integrated circuit (IC) technology to integrate wavelength dependent radio frequency (RF) components triggered the advent of ASBs. These boards draw desirable features from IC as well as PCB technologies. Unprecedented challenges came up in modeling the different devices fabricated on an ASB owing to their large sizes and the presence of wideband microwaves. So far, modeling the effect of large sizes and ambient microwaves on DC bias of diodes have not been considered in scientific literature. Furthermore, the state of the art numerical simulators are unable to imitate the behavior of such diodes observed over measurements. Here, a semi-analytical, circuit model of distributed diodes on ASB is presented that is fairly accurate in predicting the actual behavior of the diodes. The model also opines a novel phenomenon where microwaves affect the DC characteristics of diodes with added resistances.

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“…11 Calculated V-I curves compared to pure DC measurements characteristics of the boards again without supplying microwaves. The measurements that include microwaves were taken more than two years back as reported in [7]. In the second episode of pure DC measurements, unfortunately, the ASB pertaining to L 1 was found damaged.…”

Section: E the Case Of Pure DCmentioning

confidence: 99%

A Behavioral DC Model of 3D Distributed Diodes in Presence of Wideband Microwaves on Active Substrate Boards

Chakravorty¹

2020

Preprint

0

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In the past few years, a new type of circuit board, named here as active substrate board (ASB), was introduced over circuit applications of diodes. Unlike a traditional printed circuit board (PCB), an ASB has its substrate made of a semiconductor. The inability of the traditional integrated circuit (IC) technology to integrate wavelength dependent radio frequency (RF) components triggered the advent of ASBs. These boards draw desirable features from IC as well as PCB technologies. Unprecedented challenges came up in modeling the different devices fabricated on an ASB owing to their large sizes and the presence of wideband microwaves. So far, modeling the effect of large sizes and ambient microwaves on DC bias of diodes have not been considered in scientific literature. Furthermore, the state of the art numerical simulators are unable to imitate the behavior of such diodes observed over measurements. Here, a semi-analytical, behavioral DC model of three dimensional (3D), distributed diodes on ASB is presented that is fairly accurate in predicting the actual behavior of the diodes. The model also opines a novel phenomenon of an AC affecting a DC with an added resistance.

show abstract

“…Fig. 1 shows different views of a typical distributed diode to be used in shunt configuration for microwave applications [7]. On top of a high resistivity silicon (HR-Si), Boron doped P-Type substrate, phosphorus doped N + region is layered to form a N + P junction.…”

Section: Introductionmentioning

confidence: 99%

A DC Circuit Model of Distributed Diodes on Active Substrate Boards for CAD Tools

Chakravorty¹

2021

Preprint

View full text Add to dashboard Cite

In the past few years, a new type of circuit board, named here as active substrate board (ASB), was introduced over circuit applications of diodes. Unlike a traditional printed circuit board (PCB), an ASB has its substrate made of a semiconductor. The inability of the traditional integrated circuit (IC) technology to integrate wavelength dependent radio frequency (RF) components triggered the advent of ASBs. These boards draw desirable features from IC as well as PCB technologies. Unprecedented challenges came up in modeling the different devices fabricated on an ASB owing to their large sizes and the presence of wideband microwaves. So far, modeling the effect of large sizes and ambient microwaves on DC bias of diodes have not been considered in scientific literature. Furthermore, the state of the art numerical simulators are unable to imitate the behavior of such diodes observed over measurements. Here, a semi-analytical, circuit model of distributed diodes on ASB is presented that is fairly accurate in predicting the actual behavior of the diodes. The model also opines a novel phenomenon where microwaves affect the DC characteristics of diodes with added resistances.

show abstract

A novel approach to co-design microwave devices with distributed switches

Cited by 17 publications

References 16 publications

A DC Circuit Model of Distributed Diodes on Active Substrate Boards for CAD Tools

A DC Circuit Model of Distributed Diodes on Active Substrate Boards for CAD Tools

A Behavioral DC Model of 3D Distributed Diodes in Presence of Wideband Microwaves on Active Substrate Boards

A DC Circuit Model of Distributed Diodes on Active Substrate Boards for CAD Tools

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