A miniaturization technique of a compact omnidirectional antenna

Konferenz: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
23.03.2009 - 27.03.2009 in Berlin, Germany

Tagungsband: EuCAP 2009

Seiten: 5Sprache: EnglischTyp: PDF

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Delaveaud, C.; Sufyar, S. (CEA-LETI MINATEC, 38054 Grenoble, France)

This paper discusses a miniaturization technique of a compact omnidirectional antenna. A slot loading technique is applied to a well-know low-profile antenna structure whose radiation characteristics are similar to equivalent monopole ones. The typical dimensions (width x height) of the obtained antenna are lambda0/11 x lambda0/75 (lambda0 being the free space operating wavelength) which makes it a miniature antenna that can be integrated inside small wireless sensor nodes using narrow band communication systems. Its performances are in accordance with classical fundamental limits, the operating bandwidth and efficiency are significantly reduced with the antenna miniaturization.