Improvement of еру incide parameters of electrically small wire antennas
Journal Title: Вісник НТУУ КПІ. Серія Радіотехніка, Радіоапаратобудування - Year 2011, Vol 0, Issue 46
Abstract
The results of studying ways to improve the VSWR and efficiency ofelectrically small antennas with dimensions much less resonance with matching inductiveloads that are included directly in the radiating antenna wire schy. Noted, for example, thatthe size of the . -shaped antenna, shortened by half relative to the resonant length, the inclusionof inductive loads at the centers of radiating branches makes it possible to lower the VSWR of approximately 3 orders of magnitude. Under these conditions there is a significantunusial increase in power input connectors for electrically small antenna (about 2 orders ofmagnitude) compared to the power in the same oscillator with no inductive loads, un an alternatingvoltage across the input terminals of the antenna. This phenomenon leads to greatlyincrease the effectiveness of radiation (reception) antenna. The estimation of efficiency ofelectrically small antennas, depending on their electrical length and Joule losses of new elementsin the antenna. Depending on the estimation of the standard deviation VSWR in thesupply feeder truncated - shaped antennas on the SD coordinates include matching inductiveload. It is noted that similar methods of analysis and improvement of the inсide electricalproperties of electrically small antennas can be applied to wire antennas of variousconfigurations, including a microstrip antenna design
Authors and Affiliations
V. Ovsyanikov, L. Zagorodnya
Keywords
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- EP ID EP309380
- DOI 10.20535/RADAP.2011.46.116-123
- Views 55
- Downloads 0
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