Lumped parameter models for single- and multiple-layer inductors

Massarini, A.; Kazimierczuk, Marian K.; Grandi, Gabriele

doi:10.1109/pesc.1996.548595

Cited by 100 publications

(49 citation statements)

References 3 publications

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“…There are some characteristic that should be addressed regarding this work. At high frequencies, the behavior of inductor is very different from their low frequency behavior [23]. The parasitic capacitances and resistances are distributed parameters which are negligible at low frequency but play a role of increasing significance as the operating frequency increases.…”

Section: Figure 2 Schematic Of the Second Filtermentioning

confidence: 99%

Development of VHF LC-Passive Filters for Multiband Transient Radio Telescope

Anwar

Islam

Misran

et al. 2017

IJAIT

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Filter is one of key module in a radio telescope system. This article present the development of VHF LC-passive filters meant to support a multiband antenna in a transient radio telescope system by reducing the bandwidth of each operating frequencies. The filters were developed by employing low-cost inductor and capacitor with low self-resonant frequency (SRF) and hence the characteristic are highly affected by the parasitic inductance of the capacitors and parasitic capacitance of the inductors. Therefore, general equation to develop an LC filters was no longer applicable in developing these filters. Nevertheless, three filters were successfully developed, operated at 38 MHz, 74 MHz and 152 MHz with relatively good quality factors up to of about 13. AcknowledgmentThe authors would like to thank Universiti Kebangsaan Malaysia for sponsoring this work.

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Section: Figure 2 Schematic Of the Second Filtermentioning

confidence: 99%

Development of VHF LC-Passive Filters for Multiband Transient Radio Telescope

Anwar

Islam

Misran

et al. 2017

IJAIT

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“…In the literature (e.g., [21] , [9] , [20]), the stray capacitance is calculated based on the turn-to-turn, winding-to-core and turn-to-ground capacitance of conductors with round cross-section. These calculations are thus based on the medium permittivity, winding pitch, wire cross-sectional shape, wire insulation material and the wire diameter.…”

Section: Parasitic Capacitance Of the Coilmentioning

confidence: 99%

Wireless power transfer and optogenetic stimulation of freely moving rodents

Nassirinia

Straver

Hoebeek

et al. 2017

2017 8th International IEEE/EMBS Conference on Neural Engineering (NER)

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Abstract:Animal studies are commonly used to test the feasibility and effectiveness of promising novel neuroscience research ideas. One such new technique is optogenetic stimulation, a state-of-the-art brain stimulation technique. In optogenetics, genetic techniques are used to create light-sensitive proteins within the neuron membrane, thus allowing the affected region to become sensitive to light stimulation, for example through an inserted LED.Current optogenetic stimulation methods use tethered setups and, typically, the animal-under-study is put into a fixed position. This introduces stress, which, besides an obvious reduction in animal welfare, may also influence the experimental results. Hence, an untethered setup is highly desirable. Therefore, in this study, we propose a wireless optogenetic stimulation setup, which allows for full freedom of movement of multiple rodents-under-study in a 40 cm × 40 cm × 20 cm environment.We investigate a variety of wireless power transfer methods, which results in the choice for wireless power transfer through inductive coupling, as this allows for efficient power transfer over short range and has the least side-effects, making it the most suitable approach for this particular environment. The efficiency of inductive coupling is highly susceptible to vertical, lateral and angular misalignment of the coils. The wireless link is, therefore, designed to maximize the link efficiency and minimize the misalignments between the coils. In order to maximize the inductive power transfer link, we look into all the aspects that have an influence on the link efficiency, including coil shape and coil material. The implementation of the wireless optogenetics setup is divided into three parts:Transmitter Coil: The design of a transmitter coil capable of providing sufficient link efficiency throughout the entire 40 cm × 40 cm × 20 cm region of interest, in order to be able to power the optogenetic stimulation receiver, regardless of lateral and vertical misalignments.Receiver Module: The design of a receiver module that resides on the animal and, as such, is severely restricted in both size and weight. The complete module with receiver coil, rectifying and regulating electronics and microcontroller can occupy at most 1 cm × 1 cm × 1 cm and weights below 1 g. Moreover, half of allowable volume of the receiver module is kept unused for the future assembly including the wireless ECoG recording electronics.Optogenetics Optrodes: The creation of optogenetics optrodes using a novel µLED mounting technique, which allows for the µLED array with multiple LEDs to be directly inserted into the brain. The use of a µLED array greatly improves the power efficiency, as the traditional LED-to-optical-fiber coupling is accompanied by large losses in light-intensity. Moreover, a single optrode is able to replace a number of optical fibers, resulting in a less-invasive procedure if multiple stimulation sites are required.For an input current of 0.5 A into the primary coil, an average inductive link effici...

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“…As illustrated in Figure 10(b), the turn-to-turn parasitic capacitance is a combination of parasitic capacitances through the insulation layer and the nonconductive gap. The parasitic capacitance contributed by the dielectric insulting layer per unit angle is Massarini et al (1996) …”

Section: Turn-to-turn Parasitic Capacitancementioning

confidence: 99%