Experimental analysis of planar spiral inductors

Ammouri, Aymen; Belloumi, Hamed; Salah, Tarek Ben; Kourda, Ferid

doi:10.1109/cistem.2014.7076937

Cited by 12 publications

(5 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…19 A good alternative is the adaptation of the polygonal design to obtain better performances. 20,21 To highlight the obtained simulation results, we compared the proposed model with the most important planar models from the literature. 22,23 • Model 1.…”

Section: Validation and Discussionmentioning

confidence: 99%

See 1 more Smart Citation

A spiral planar inductor: An experimentally verified physically based model for frequency and time domains

Ammouri¹,

Salah²,

Morel

2017

Int J Numerical Modelling

Self Cite

View full text Add to dashboard Cite

The results of a comprehensive investigation of spiral inductors are presented. A physically based model includes the self and mutual inductances, the capacitances between adjacent turns, the substrate capacitance, and the ohmic loss effects proposed. Heterogeneous simulation scheme, including circuit and device models during time and frequency domains, is successfully implemented in VHDL-AMS language and is simulated numerically in Simplorer platform.The model has been validated during frequency domain with measurement data of spirals having different geometries and various sizes. Moreover, the fabricated spiral inductors are evaluated in DC-DC power converter to benchmark the model accuracy. Simulation and experimental results show excellent agreement.Validity domain is discussed. | INTRODUCTIONIn the work of Ouyang and Andersen, 1 they specified various problems related to the integration of power electronic systems. The authors demonstrated that the large mass/volume of a given power system is occupied by magnetic components. These components may be optimized using planar printed circuit board (PCB) devices. Compared with the conventional magnetic components, planar technology is printed directly on circuit board (PCB) with low profile and offers the flexibility of winding geometry and large shape. [1][2][3] From a design point of view, planar inductor electrical behavior cannot be precisely predicted by the conventional inductor models. [4][5][6] In particular, the skin, the proximity, and the parasitic capacitances effects are complex devices to model, particularly during large frequency domain. In the work of Han et al, 5 the electromagnetic simulation is considered to be modeling planar components. However, this method is not only cumbersome and time-consuming but also difficult to develop into general electronically circuit simulations. Other original models are reported by Wang et al. 6 However, this model is not dependent on the geometrical parameters and the layout process. Moreover, its model parameters are not used fairly to optimize the planar inductor layout. In a previous work, 3 a simple square planar inductor model is developed and simulated inside a power converter during time domain. 7 However, the validation process appeared quite limited at frequency domain and for different planar inductor structures such as hexagonal and octagonal structures (Figure 1). So far, literature has addressed models of planar inductor but was not able to simulate different inductor designs. It is thus necessary to assess the planar inductor electrical performances and its validation not only during time domain but also during frequency domain for different inductor structures.

show abstract

Section: Validation and Discussionmentioning

confidence: 99%

“…Many authors declare that these errors are due to the rectangular angles in a square shape . A good alternative is the adaptation of the polygonal design to obtain better performances …”

Section: Validation Processmentioning

confidence: 99%

A spiral planar inductor: An experimentally verified physically based model for frequency and time domains

Ammouri¹,

Salah²,

Morel

2017

Int J Numerical Modelling

Self Cite

View full text Add to dashboard Cite

show abstract

“…Planar inductors generally use rectangular conductors for their windings [10,11]. Winding structures can be stacked, in which windings are wound in a single turn on a plane and stacked in multiple stages; spiral, in which windings are laid out on the same plane; and hybrid, in which the stacked and spiral structures are combined [9,[11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Reduction of Alternating‐Current Resistance and Heat Generation of Spiral Inductors with Magnetic Sealing Technique

Shimura

Kanaya

Kobayashi

et al. 2023

IEEJ Transactions Elec Engng

View full text Add to dashboard Cite

As direct current-direct current (DC-DC) converters increase their power density, their inductors require a planar structure with good heat dissipation. Planar inductors use rectangular wires or substrate patterns for their windings. Winding structures can be stacked, in which the structures are on top of each other; spiral, in which the windings are configured in the same plane; or composite structures of both. Here, the authors clarify the alternating-current (AC) resistance of inductors with different winding structures and propose a magnetic sealing technique (MST) that reduces the AC resistance of low-profile spiral inductors. Magnetic field simulation revealed the effect of MST on the AC resistance and inductance. Furthermore, spiral inductors with MST were fabricated, and the AC resistance reduction effect of MST was confirmed with impedance analyzer. The heat-generation reduction effect in an MST inductor was demonstrated in a 1-MHz 100 V/320 V 800-W boost DC-DC converter prototype with GaN devices.

show abstract

“…In this paper, we describe the demonstration of stretchable inductors with record high resonance frequencies ( f res ) and Q -factors along with excellent stretchability. Spiral inductors, with variations of ring shapes (circle, square, hexagon, octagon, or other polygons), have been widely used in RFICs for a few decades now . They are featured with compact size, high resonance frequencies, scalable inductance values, and high Q factors, capable of fulfilling various functions like RF chokes, bias network, impedance matching, etc., and have been adopted in RFICs fabricated on Si, GaAs, and GaN substrates.…”

Section: Introductionmentioning

confidence: 99%

S- to X-Band Stretchable Inductors and Filters for Gigahertz Soft and Epidermal Electronics

Lan

Min

Kim

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

To fulfill the increasing demand for radiofrequency (RF) wireless communication capacity for epidermal electronics, stretchable integrated circuits (ICs) in the gigahertz (GHz) range are desirable. Lumped RF inductors, as a key component in RFICs, typically dominate a large portion of the circuit/chip area and therefore make such inductors mechanically stretchable is critical for GHz-frequency stretchable RFICs. Most of the reported stretchable inductors operate in the MHz frequency range. The only GHz stretchable inductor shows a quality factor of about 2, limiting its potential RF applications. Here, stretchable inductors with a high quality factor of Q > 12.6 and resonance operation frequency of f res > 11.6 GHz are demonstrated by combining microspirals with stretchable structures, overcoming all of the shortcomings of previous demonstrations. Furthermore, a stretchable 1.5–2.6 GHz filter with a peak insertion loss of −2.3 dB at 1.8 GHz is developed, showing negligible performance changes under stretching or on the skin to demonstrate the utility in practical wireless applications like GSM and Bluetooth (2.45 GHz) bands. The demonstrations can facilitate multiple GHz epidermal RFICs in the future.

show abstract

Experimental analysis of planar spiral inductors

Cited by 12 publications

References 8 publications

A spiral planar inductor: An experimentally verified physically based model for frequency and time domains

A spiral planar inductor: An experimentally verified physically based model for frequency and time domains

Reduction of Alternating‐Current Resistance and Heat Generation of Spiral Inductors with Magnetic Sealing Technique

S- to X-Band Stretchable Inductors and Filters for Gigahertz Soft and Epidermal Electronics

Contact Info

Product

Resources

About