An Equivalent Circuit for Emi Prediction in Printed Circuit Boards Featuring a Straight-to-Bent Microstrip Line Coupling

Bernardi, Paolo; Cicchetti, R.; Pelosi, Giuseppe; Reatti, Alberto; Selleri, Stefano; Tatini, M.

doi:10.2528/pierb08020502

Cited by 20 publications

(16 citation statements)

References 33 publications

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“…In final, a filter is physically fabricated for experimental validation of the presented methodology. With this verified methodology, different type of physical coupling structure such as in [11] and [12] could be attempted for implementing with advanced cross-coupled filter function.…”

Section: Resultsmentioning

confidence: 99%

“…The condition is achieved without correlation to the synthesis process in the unchanged circuit model shown in Figure 1. Under these above solutions, the element values in Figure 1 can be numerically determined as g 1 = 0.959738, g 2 = 1.421912, J 1 = −0.210822, J 2 = 1.117680 (12) Look at the two sets of element values comparatively, we can figure out, numerical consistency between them has well been achieved with the resultant synthesis accuracy at maximal six digits. Furthermore, the values listed in (12) hold a mathematical accuracy of seven digits.…”

Section: Numerical Verificationmentioning

confidence: 95%

See 1 more Smart Citation

Numerical Synthesis Design of Coupled Resonator Filters

Wen¹,

Li²

2009

PIER

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Abstract-This paper proposes a methodology for numerically synthesizing element values of coupled resonator filters. These element values are compatible in retrieving coupling matrix of a cross-coupled quadruplet structure (also known as the folded structure). Differed from direct synthesis by matrix rotation, numerical solution has been adopted here to its equivalent coupling model. For varied specified return loss, numerical solutions of these element values have been derived and their accuracy is verified with their analytical counterparts to be extended for stringent design requirement. In addition, multiple sets of data are tabulated and categorized for efficient filter synthesis design under different specified pass-band return loss. In the end, an example quadruplet filter is designed, fabricated and measured for validation of the presented synthesis design methodology.

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Section: Resultsmentioning

confidence: 99%

Section: Numerical Verificationmentioning

confidence: 95%

Numerical Synthesis Design of Coupled Resonator Filters

Wen¹,

Li²

2009

PIER

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“…In particular, characterization of dielectric substrates for printed circuit boards (PCBs) is vital to achieve the first-pass success in modern highspeed digital system designs. When the on-board data rate is in the Gbps (gigabits per second) range or higher, traces and discontinuities including vias, AC coupling pads, and trace bends on a signal path have to be modeled to catch the channel response accurately [1][2][3]. A static field solver is not sufficient to model these discontinuities and traces, and full-wave modeling tools have to be used.…”

Section: Introductionmentioning

confidence: 99%

Planar Transmission Line Method for Characterization of Printed Circuit Board Dielectrics

Zhang¹,

Koledintseva²,

Antonini³

et al. 2010

PIER

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Abstract-An effective approach to characterize frequency-dispersive sheet materials over a wide RF and microwave frequency range based on planar transmission line geometries and a genetic algorithm is proposed. S-parameters of a planar transmission line structure with a sheet material under test as a substrate of this line are measured using a vector network analyzer (VNA). The measured S-parameters are then converted to ABCD matrix parameters. With the assumption of TEM/quasi-TEM wave propagation on the measured line, as well as reciprocity and symmetry of the network, the complex propagation constant can be found, and the corresponding phase constant and attenuation constant can be retrieved. Attenuation constant includes both dielectric loss and conductor loss terms. At the same time, phase term, dielectric loss and conductor loss can be calculated for a known transmission line geometry using corresponding closedform analytical or empirical formulas. These formulas are used to construct the objective functions for approximating phase constants, conductor loss and dielectric loss in an optimization procedure based on a genetic algorithm (GA). The frequency-dependent dielectric properties of the substrate material under test are represented as one or a few terms following the Debye dispersion law.The parameters of the Debye dispersion law are extracted using the GA by minimizing the discrepancies between the measured and the corresponding approximated loss and phase terms. The extracted data is verified by substituting these data in full-wave numerical modeling of structures containing these materials and comparing the simulated results with experimental.

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“…Furthermore, higher-order modes of propagation may also easily be excited by the discontinuities. Thus, how to derive adequate equivalent networks that can take care of the wideband feature and rather complicated coupling schemes at the same time has casted very challenging tasks on the conventional approaches [12][13][14][15][16][17][18]. In this paper, system level integration of simulation methods for high data-rate transmission circuit design applications is proposed.…”

Section: Introductionmentioning

confidence: 99%

System Level Integration of Simulation Methods for High Data-Rate Transmission Circuit Design Applications

Hsu

2009

PIER

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Abstract-A system level integration of simulation methods for high data-rate transmission circuit design applications is developed in this paper. While the elementary circuit theory was responsible for designing the circuits to meet the required performance specifications, three dimensional full-wave electromagnetic simulation technique was adopted to characterize the off-chip parasitic effects induce from the packages. The developed technique was applied for the design of optical Pick-Up Head (PUH) driver circuitry and a data transmission rate up to 640 Mega bits per second (Mb/s) was achieved with standard 0.35 µm CMOS technology, showing the promising feature of applying such technique in successful design for high data-rate transmission circuits.

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An Equivalent Circuit for Emi Prediction in Printed Circuit Boards Featuring a Straight-to-Bent Microstrip Line Coupling

Cited by 20 publications

References 33 publications

Numerical Synthesis Design of Coupled Resonator Filters

Numerical Synthesis Design of Coupled Resonator Filters

Planar Transmission Line Method for Characterization of Printed Circuit Board Dielectrics

System Level Integration of Simulation Methods for High Data-Rate Transmission Circuit Design Applications

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