1. Low κ Mg2SiO4 ceramic tapes and their role as screen printed microstrip patch antenna substrates.
- Author
-
Roshni, Satheesh Babu, Arun, Sasidharanpillai, Sebastian, Mailadil Thomas, Mohanan, Pezholil, and Surendran, Kuzhichalil Peethambharan
- Subjects
- *
MICROSTRIP antennas , *IEEE 802.16 (Standard) , *SILK screen printing , *ADHESIVE tape , *SUBSTRATE integrated waveguides , *TAPE casting , *PERMITTIVITY , *DIELECTRIC loss - Abstract
Despite their intolerance to fine machining, certain ceramics possess a unique combination of low dielectric constant and ultra-low dielectric loss, which is ideal for fabricating a patch antenna on them, with increased efficiency. In a candid attempt, we have qualified an ultra-low loss ceramic, magnesium silicate (abbreviated as Mg 2 SiO 4), for microwave antenna applications. Flexible ceramic tapes are prepared through organic solvent-based tape casting method, stalked, isostatically pressed, sintered, and polished. The new substrate possesses excellent microwave dielectric properties on par with commercial polymer composite wafers, while thermal conductivity is two orders better than them. The feasibility of using Mg 2 SiO 4 as microwave substrate was demonstrated by fabricating a microstrip patch antenna for WLAN applications. The radiation characteristics of the antenna show excellent agreement with the simulated ones. The patch antenna fabricated on Mg 2 SiO 4 substrate radiated at 2.44 GHz with a gain of 3.2 dB and a return loss of −20 dB. Unlabelled Image • Mg 2 SiO 4 show low ε r , and very low loss which is suitable for high efficiency microstrip patch antenna substrates. • The newly designed substrate has impressive thermal properties, better than commercial polymer and fiber-glass substrates. • The radiation characteristics of Mg 2 SiO 4 based WLAN patch antenna is comparable to the performance of commercial antennas. • The patch antennas developed on customized ceramic substrates is ideal for antennas operated at extreme conditions. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF