Energy-based Input Reflection Coefficient for the Characterization of Ultra-Wide Band Antennas

Tamas, Razvan D.; Babour, Laurence; Fond, Emilie; Alexa, Mihai; Slămnoiu, G; Cosereanu, L.; Saguet, P.; Chilo, J.

doi:10.1109/iwat.2008.4511348

Cited by 4 publications

(4 citation statements)

References 5 publications

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“…When transmitting or receiving pulsed signals energy-based descriptors should be used instead of classical, frequency-domain antenna parameters [ 24 ]. In order to quantify the energy balance at the antenna input, two suitable energy parameters have been defined [ 25 , 26 ]: the pulse reflection coefficient and the pulse matching ratio, respectively.…”

Section: Antenna System Design Energy Based Descriptorsmentioning

confidence: 99%

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An Ultra-Wide Band Antenna System for Pulsed Sources Direction Finding

Tamas

Bucuci

2020

Sensors

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Electric discharges in high-voltage power distribution systems can be localized through their electromagnetic signature in the radio-frequency range. Since discharges produce series of short pulses, the corresponding spectrum usually covers wide frequency ranges, typically up to 1 GHz. In this paper, we propose an ultra-wide band (UWB) antenna system and a direction-finding (DF) approach based on using energy-based descriptors, instead of classical frequency-domain parameters. As an antenna system, we propose a dual-padlock configuration with a suitable pulse-matched response, featuring two unbalanced outputs. The proposed antenna system was successfully validated, both by simulations and measurements.

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Section: Antenna System Design Energy Based Descriptorsmentioning

confidence: 99%

“…The pulse matching ratio,

[ 25 ] is an energy-based descriptor similar to the frequency- domain voltage standing wave ratio (VSWR),

…”

Section: Antenna System Design Energy Based Descriptorsmentioning

confidence: 99%

An Ultra-Wide Band Antenna System for Pulsed Sources Direction Finding

Tamas

Bucuci

2020

Sensors

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“…It should be noted that a good fidelity was achieved although the expansion contains few terms and no thorough matching optimization was performed. The input matching of an antenna with pulsed excitation can be quantified by an energy-based descriptor similar to the frequency-domain VSWR, i.e., the pulse matching ratio, s [3]. The above antenna exhibits values of s=5.84 on a normalizing impedance of 50, and a minimum of s=2.19 is achieved on 250.…”

Section: Fig 2 Basis Functions Fig 3 Field Expansion Weightsmentioning

confidence: 99%

“…Thus, new fundamental tools and descriptors have been defined [1], [2], [3] prior to analyze and further synthesize UWB antennas. There are mainly two ways to conceive a UWB antenna: either by modeling and optimizing a specific, known radiating structure [4], or by synthesis.…”

Section: Introductionmentioning

confidence: 99%

Time-domain pulse-matched synthesis of ultra-wide band antennas

Tamas

Căruntu

Petrescu

2011

2011 International Workshop on Antenna Technology (iWAT)

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Antenna synthesis can yield optimal radiating structures in terms of pattern diagram, gain, bandwidth or other figures of merit. Although the synthesis might be more difficult for continuous sources than for antenna arrays the resulting radiating structures are cheaper and easy to manufacture. In this paper, we propose a time-domain synthesis approach for ultra-wide band antennas. The method is based on a finite expansion of the antenna time-domain response. The synthesis is performed with regard to the resemblance between the time-domain radiated waveform and the waveform at the antenna input. The approach is validated by synthesizing a planar, ultra-wide band antenna designed for a particular waveform of excitation.

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