Zobrazeno 1 - 10
of 123
pro vyhledávání: '"Gottfried Magerl"'
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 67:2514-2520
Measurement-based black box behavioral models are widely used nowadays. To handle nonlinear effects efficiently, such models often rely on approximation techniques. Polyharmonic distortion (PHD) modeling emerged as a viable approach for describing a
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 66:237-244
This paper introduces a method for determining the attenuation constant and the dielectric permittivity (Dk) by microstrip lines and/or conductor-backed coplanar waveguides. The method considers several effects (surface waves, frequency-dependent con
Autor:
Gottfried Magerl, Thomas Faseth, Klaus Witrisal, Stefan Grebien, Holger Arthaber, Florian Galler
Publikováno v:
IEEE Journal of Radio Frequency Identification. 1:32-38
This paper presents measurement results of a recently introduced time of flight (ToF) ranging method for backscattering radio frequency identification (RFID) tags. The measurements are done with off-the-shelf EPC Class1 Gen2 tags, an automated tag po
Publikováno v:
IEEE Transactions on Circuits and Systems I: Regular Papers. 62:2739-2747
In this paper an equivalent complex baseband representation of the analog component related non-linearity of digital transmitters relying on 1-bit complex baseband encoding is derived. By exploiting the properties of the pulsed RF encoding the novel
Publikováno v:
2018 International Workshop on Integrated Nonlinear Microwave and Millimetre-wave Circuits (INMMIC).
Measurement based black box behavioral models for non-linear devices are increasingly popular nowadays. One important candidate is the X-parameter model, which is based on polyharmonic distortion modeling (PHD). The X-parameter model only utilizes li
Publikováno v:
2017 47th European Microwave Conference (EuMC).
This paper elaborates the dispersion behavior of the apparent permittivity for microstrip lines and conductor-backed coplanar waveguides up to 110 GHz. For both transmission modes, measurements of different transmission line lengths were carried out
Publikováno v:
2017 12th European Microwave Integrated Circuits Conference (EuMIC).
Models for active devices operating in a nonlinear regime are an indispensable tool for modern RF-circuit design. A popular class of large signal models are X-parameters which offer an accurate description of nonlinear devices. However, they require
Publikováno v:
2017 IEEE Radio and Antenna Days of the Indian Ocean (RADIO).
The X-parameter model is designed for modeling weakly nonlinear devices in an approximately impedance-matched environment. Load dependent X-parameter models were proposed to overcome this, practically very relevant, limitation and model a nonlinear d
Publikováno v:
2017 IEEE Radio and Antenna Days of the Indian Ocean (RADIO).
Within this paper four different surface finishes, as well as plain copper tracks, were investigated to evaluate their impact on insertion loss on Microstrip (MS) ring resonators. The selected surface finishes are electroless nickel immersion gold (E
Publikováno v:
2017 IEEE Radio and Antenna Days of the Indian Ocean (RADIO).
Look-up table (LUT) models have been demonstrated to work well for predicting waveforms in circuits that show memory induced, nonlinear behavior. Although, for circuits with deep memory, the models become impractically complex. This work addresses th