Temperature stable thermoplastic microwave materials and copper laminates

High dielectric constant materials are increasingly needed in microwave circuit miniaturization for outdoor and indoor wireless applications. In this presentation, temperature stable high dielectric constant thermoplastic polymer compositions and copper laminated sheets made from these compositions for wireless applications are introduced. The compositions are made by mixing suitable ceramics and polymers. The design, fabrication and properties of these compositions and some applications, including antennas and filters, are discussed. The effect of temperature on the resonance frequency of patch antennas made from the copper laminated high dielectric constant composite sheets are also discussed.