This paper investigates wave-based analysis and impedance matching for the ladder electric networks. The results are a generalized version of our previous work for the cascade connected damped mass-spring systems. We first clarify the class of the ladder networks which satisfies the three conditions for the propagation constants to be analyzed by the wave-based analysis. Secondly, for the class...

Wireless power transfer (WPT) has attracted an ever increasing interest from both industry and academics over the past few years. Its applications vary from small power devices such as mobile phones and tablets to high power electric vehicles, and from small transfer distance of centimeters to large distance of tens of centimeters. In order to achieve a high efficiency WPT system, each circuit ...

background several methods for assessment of severity of pain have been proposed but all of them are subjective. objectives this study evaluated the association concerning changes in electrical resistance (er) between two acupuncture points and severity of postoperative pain in order to define an objective measurement of pain. patients and methods in a cross-sectional study, 50 patients undergo...

Strongly anisotropic media where the principal components of electric permittivity or magnetic permeability tensors have opposite signs are termed as hyperbolic media. Such media support propagating electromagnetic waves with extremely large wave vectors exhibiting unique optical properties. However, in all artificial and natural optical materials studied to date, the hyperbolic dispersion orig...

This paper presents study of a 6.78 MHz RF source with impedance matching network based inductively coupled plasma generator ignition system for an Hion source. Two types of 10 turn RF antenna (solenoid coil) were developed, to couple the RF power to the ignition plasma chamber. The antenna’s electric parameters were measured using Vector Network Analyzer (VNA). A copper conductor of 3 x 4 mm s...

For high quality factor magnetically coupled resonator wireless power systems, constant wireless power transfer efficiency can be achieved over a greater range and higher efficiency than an inductively coupled system. However, as the distance varies between two near-field resonators, the input and output impedances to the resonators change. Therefore, in order to achieve constant efficiency, th...

An important part of both comprehensibility and traceability is that the implementation resemble the design. As the design is refined to a concrete implementation, it is important that concepts have a clear correspondence to implementation artifacts – even if this mapping is not one-to-one. This holds true for crosscutting – or aspect-oriented – behaviors as well. We illustrate by investigating...