Mr. Blazej Slesicki Profile

Blazej Slesicki

at 41 Flying School Base

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Proceedings Article | 27 March 2019 Paper

The use of shunt-stubs for impedance matching improvement in planar antenna arrays

Adam Slowik, Blazej Slesicki

Proceedings Volume 11055, 1105511 (2019) https://doi.org/10.1117/12.2524978

KEYWORDS: Antennas, Numerical analysis, Capacitance, Transformers, Telecommunications

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The concept, work principle and analysis results for signal distribution networks of planar antenna arrays with reflection parameters improvement using shunt-stubs have been presented in the paper. Signal distribution network is the important part of every antenna array and lets to split input signal to every radiating element. 1-dimention arrays fed parallelly, from basic 2-elements, to complex multielement structures were analyzed. Numerical analysis results, confirmed by real structure measurement results have been presented. Antenna arrays with rectangular, as the most popular radiator shape were taken under tests. Authors propose new approach in using of shunt-stubs. In traditional approach, shunt-stubs are often used to single patch impedance correction. The signal distribution network, as a part of antenna array, is the source of additional susceptances and impedance mismatching in consequence. In multielement arrays this adverse influence should be compensated or corrected. The using of shunt-stubs not only at patches, but in every signal splitting stage is proposed by authors. Additional stubs at every T-junction do not complicate of overall circuit and carry significant contribution in matching. Additional elements does not influence in overall size in array configurations majority. A few simple antenna arrays, working in 2,4 GHz Wi-Fi band were manufactured and measured. Measurement results confirm equity of stubs applying.

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