A Comparison of Some Low Cost Laminates for Antennas Operating in the 2.45 GHz ISM Band

TitleA Comparison of Some Low Cost Laminates for Antennas Operating in the 2.45 GHz ISM Band
Publication TypeConference Paper
Year of Publication1998
AuthorsAmmann, MJ
Conference NameLow Cost Antenna Technology (Ref. No. 1998/206), IEE Colloquium on
Pagination3/1-3/5
Conference Start Date24/02/1998
PublisherThe Institution of Electrical Engineers
Abstract

An evaluation of some low-cost laminates suitable for microstrip patch antennas is presented. Criteria for the selection of substrates for antenna fabrication are given careful consideration. A coaxial-probe fed linearly-polarized rectangular microstrip patch operating at a frequency of 2.45 GHz was fabricated on four different low cost laminates. The substrates used were polyester, epoxy glass (FR-4), a ceramic filled PTFE composite and a woven glass-reinforced hydrocarbon and ceramic thermoset material. Material properties are discussed and the antenna performances are evaluated and compared to one fabricated on a thick glass-loaded microfiber PTFE substrate. An evaluation of some inexpensive microstrip antenna CAD packages, which employ closed-form expressions based on transmission-line and cavity models, is also given. These models ignore the diffraction effects of a finite ground-plane

URLhttp://ieeexplore.ieee.org/iel4/5437/14683/00667013.pdf?tp=&isnumber=14683&arnumber=667013&punumber=5437
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