Transient responses of an exponential transmission line and its applications to high-speed backdriving in in-circuit test

Hsue, Ching-Wen; Hechtman, Charles D.

doi:10.1109/22.277440

Cited by 10 publications

(3 citation statements)

References 12 publications

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“…Propagation of short pulses along tapered transmission lines has been investigated for applications ranging from laser driving circuits [9][10][11][12] to matching of UWB circuits and antennas [13,14].…”

Section: Introductionmentioning

confidence: 99%

Design, Realization, and Experimental Test of a Coaxial Exponential Transmission Line Adaptor for a Half-Impulse Radiating Antenna

Vega

Rachidi

Mora

et al. 2013

IEEE Trans. Plasma Sci.

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This paper describes the simulation, design, realization and experimental test of atapered transmission line for adapting a broadband impulse generator to a radiating antenna, for a frequency range of 50 MHz to 1 GHz. Two different taper geometries are considered and discussed in the analysis: exponential and logarithmic. Two analysis methods are also used: (1) analytical equations obtained by applying the transmission line theory, and (2) numerical simulations in both frequency-and time-domain using Comsol®. It is shown that in general an exponential taper performs better than a logarithmic one, especially at high frequencies. Time domain simulations reveals that for fast transient subnanosecond pulses, both tapers can be used equivalently and the signal does not suffer from any significant distortion while traveling along the tapers. We also show that analytical equations obtained using the transmission line theory are in very good agreement with full-wave simulation results and can be used advantageously in the design of tapers. The paper also presents the mechanical design and the realization of an exponential taper used for the connection of a 50-pulser to a Half Impulse Radiating Antenna (HIRA) having an input impedance Z A = 100 . The realized taper is fully characterized in frequency-domain using a vector analyzer and in time domain using a reflectometer and shown to be performing in agreement with the simulations.

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Section: Introductionmentioning

confidence: 99%

Design, Realization, and Experimental Test of a Coaxial Exponential Transmission Line Adaptor for a Half-Impulse Radiating Antenna

Vega

Rachidi

Mora

et al. 2013

IEEE Trans. Plasma Sci.

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“…Recently, some papers have been published [1][2] on analysis of non-uniform planar tapered structures, designed for the driving circuits of either semiconductor lasers or photodiodes. However, in all the cases considered, the analyses have been performed assuming a TEM-mode configuration.…”

Section: Introductionmentioning

confidence: 99%

Propagation characteristics of transmission‐line transformers with different impedance variation patterns on substrates with very high dielectric constant

Carvalho

Conrado

Demenicis

et al. 2003

Micro & Optical Tech Letters

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Transmission‐line transformers with different impedance variation patterns and printed on substrates with very high dielectric constant (εr = 80) are compared and the influence of the total length is studied. The propagation characteristics of the tapered lines were investigated using the finite‐element method. Dispersion effects and impedance variation with respect to the frequency have been taken into account in the analysis. The obtained results are in good agreement with theoretical predictions for ideal tapers, especially at low frequencies. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 37: 174–177, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10859

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“…To characterize devices in more complicated operating regimes, various analysis and synthesis techniques-such as complex frequency-hopping [1] and "transient" -parameters-have been developed. Their application extends the concept of transfer functions to exponential transmission lines [2], nonuniformly coupled transmission lines [3], transmission lines with time-varying [4] or nonlinear loads [5], [6], or some combination of these [7]- [9].…”

Section: Introductionmentioning

confidence: 99%

Extending scattering-parameter approach to characterization of linear time-varying microwave devices

Green

Sobolewski

2000

IEEE Trans. Microwave Theory Techn.

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In this paper, we apply the theory of linear time-varying differential systems of equations to defining an extension of the standard scattering parameters. This extended parameter~() is a function of both time and frequency. With this definition, we can accurately characterize rapidly timeand frequency-varying linear lumped causal microwave devices, in particular, photoconductive microwave switches. We discuss the similarities between~() and the standard-parameter approach and describe a measurement technique. We also derive some important properties of the~()-parameters and describe conditions under which microwave devices such as photoconductive switches can be analyzed by this technique. To demonstrate the usefulness of~(), we derive the complete transfer function of the time-varying lumped-element model of a photoconductive switch. We also show the limitations of conventional time-invariant assumptions (based on windowing or apodization) to accurately model linear time-varying devices.

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Transient responses of an exponential transmission line and its applications to high-speed backdriving in in-circuit test

Cited by 10 publications

References 12 publications

Design, Realization, and Experimental Test of a Coaxial Exponential Transmission Line Adaptor for a Half-Impulse Radiating Antenna

Design, Realization, and Experimental Test of a Coaxial Exponential Transmission Line Adaptor for a Half-Impulse Radiating Antenna

Propagation characteristics of transmission‐line transformers with different impedance variation patterns on substrates with very high dielectric constant

Extending scattering-parameter approach to characterization of linear time-varying microwave devices

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