Hello, I am trying to design a patch antenna and I am trying to keep it basic since antenna and communication theory is not my expertise. I am working with a basic rectangular patch antenna with a microstrip feed line. The application for this antenna is for the use with a SAW sensor device. With using this basic antenna design to get the antenna to a small enough size (~2cm x ~3cm) the dielectric constant of the substrate the antenna rests on is ~85. I was wondering if anyone had any experience with patch antennas or high dielectric materials? I am looking to see if it's even possible for an antenna to work properly with such a high constant. Note that bandwidth and efficiency are not of a huge concern since this is a short range (<100 ft.) device. Thanks for any feedback. Dan A. Gagich NASA Langley Research Center (LaRC) USRP Intern MS 231 4 Langley Boulevard Hampton, Va 23681-2199 voice (757) 864-7037 cell (724) 255-6030 email d.a.gagich@larc.nasa.gov