A new technique to reduce the overall dimension of a microstrip antenna using a partially filled high-permittivity substrate is proposed. The miniaturized microstrip antenna for a repeater system in a mobile communication cellular band (824–894 MHz) is designed with the proposed technique and manufactured with light weight and small size. Comparison between simulations, based on HP HFSS software and measurements are provided.
Lee, Byungje and Harackiewicz, Frances J. "Miniature Microstrip Antenna With a Partially Filled High-Permittivity Substrate." (Aug 2002).