Contactless Scattering Parameter Measurements

Zelder, T.; Geck, Bernd

doi:10.1109/lmwc.2011.2162619

Cited by 14 publications

(4 citation statements)

References 12 publications

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“…Different from the previous inductive power transfer (IPT) methods and concepts, the proposed electromagnetic resonant coupling technology emphasizes on impedance matching [13] in order for the whole system to approximate to magnetic resonance, by which predictably the energy transfer efficiency of the CPT system could be optimized and theoretically the actual power rating to the load could be very satisfactory. This group of researchers considered the CPT technology as small-sized helical antenna transmission topics and pure electrical equivalence problems [14,15] which led to a convenience of investigating the system with the antenna scattering parameter (S-parameter) analysis and the direct experimental methods of using a vector network analyser (VNA) [16] to measure the outputs at a usable frequency of the industrial, scientific and medical (ISM) band-13.56 MHz [17]. Significantly, the impedance matching theory contributes to the theoretical structure construction of CPT technologies, especially for the magnetic resonance accomplishment in this case.…”

Section: Current Statusmentioning

confidence: 99%

Review on Stationary CPT Technologies and Coil Designs for EVs

Duan¹

2020

JOJMS

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In the recent decade, the driving range of pure EVs with zero emission target has become a popular topic as the massive battery requirement for longer distance travels means higher vehicle cost and longer time of recharging periods. Stationary CPT charging solutions could be an alternative to reduce EVs weight, size and energy storage unit costs. Fortunately, with progressive success of low-power CPT charging applications proposed to be commercially produced in the past decade, hundreds of kilowatts level high-power CPT charging techniques for EVs are more and more expected to be an optimally suitable solution for recharging EV batteries, providing higher propulsion and delivering continuously longer driving range in the next generations of the EVs. The idea of deploying inductive coupling for EVs has acquired a lot of attentions in the last decade due to the contributions and advancements of power electronics, switching power supply, semiconductors, microprocessors, electrochemistry, material sciences, control technologies, electromagnetics and so on, despite many challenges to be addressed including EV manufacturing integration with CPT system under the chassis, infrastructure difficulties, system maintenance on both vehicle and transmitting ground sides, actual CPT performance with real-time coupling on real-world road. In order to ensure the realization and enhance the sustainability in transportation sector with the emerging CPT ideas, currently the stationary CPT charging solutions based on inductive power transfer (IPT) have been developed from laboratory level as a first step to the practical tests of commercial realizations. In a few industrial fields nowadays, some of the proposed CPT technologies with specific coupler coil designs have been expected for real-world applications. This article presents a state of the art of the CPT technologies and focuses on reviewing current coil designs for high-power contactless energy transfer for EVs in the literature. .

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Section: Current Statusmentioning

confidence: 99%

Review on Stationary CPT Technologies and Coil Designs for EVs

Duan¹

2020

JOJMS

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“…Majority of these methods were based on contactless approach, where fields are coupled via probes to the measurement instrument. The probes can be in the form of current probes as showed in [3] or composed as a direction coupler showed in [4] and [5]. To be able to measure on high frequencies by these methods a calibration needs to be performed beforehand.…”

Section: Introductionmentioning

confidence: 99%

TRL-based Measurement of Embedded Circuits in Microwave Printed Circuit Boards Including Frequency Conversion

Hudec¹,

Ourednik²

2018

RADIOENGINEERING

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The paper deals with the measurement of individual components or circuits embedded in more complex radio frequency (RF) or microwave printed circuit boards (PCBs). Since no standard RF measurement enables the direct parallel connection of an analyzer to the boards being tested, individual components are often measured by destructively cutting manufactured boards and by attaching the RF connectors to the concerned parts. This article shows that this problem, thanks to suitable calibration standards that have been designed and manufactured, can be solved by vector measurements and a TRL calibration process. The measurements also work when the boards to be measured include frequency conversion. The applicability of the developed method has been verified by practical measurements and its accuracy influenced by variations of the parameters of the surrounding circuits has been investigated by an uncertainty analysis.

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“…An electro‐optic sampling‐based probing technique has been reported for electrical signal analysis in the sub‐picosecond domain [3]. An electromagnetic loop probe for determining the scattering parameters ( S ‐parameters) of an embedded component in a microwave circuit for quality control is presented in [4]. A pair of capacitive and inductive probes for measuring the reflection coefficient and absolute power in propagating waves on open transmission line structures is reported in [5].…”

Section: Introductionmentioning

confidence: 99%

Contactless radio frequency probes for high‐temperature characterisation of microwave integrated circuits

Jordan

Simons

Zorman³

2014

Electron. lett.

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The first ever demonstration of a viable contactless radio frequency (RF) probing technique at elevated temperatures is presented. The design utilises an inverted microstrip design for the probe, which is suspended over and placed in close proximity to the input/output microstrip lines of the device under test to couple signals in and out. To demonstrate the efficacy of the contactless RF probing technique, three example circuits, namely, a microstrip spurline bandstop filter, a microstrip pin diode series switch and a monolithic microwave integrated circuit amplifier mounted on a microstrip line were designed, fabricated and performance measured against temperature up to 200°C.

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Contactless Scattering Parameter Measurements

Cited by 14 publications

References 12 publications

Review on Stationary CPT Technologies and Coil Designs for EVs

Review on Stationary CPT Technologies and Coil Designs for EVs

TRL-based Measurement of Embedded Circuits in Microwave Printed Circuit Boards Including Frequency Conversion

Contactless radio frequency probes for high‐temperature characterisation of microwave integrated circuits

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