Miniaturization of a Dual Behavior Resonator Filter Based on a High-Permittivity Ceramic Substrate
Résumé
The miniaturization of a communication satellite payload results in a real technological challenge. This paper reports on a RF microstrip filter miniaturized through use of high-permittivity substrates. Design rules associated to such substrates are listed. The filter under study was based on the DBR topology and realized on a high-K commercial substrate. This ceramic has a relative permittivity of 90 and a low dielectric tangent (tanδ < 10-3). Finally, the results of simulations and measurements are presented and discussed, particularly the footprint reduction.