A 380-420 MHz Two Pole tunable filter using new ferroelectric composite capacitors

Fiffamen Houndonougbo (1) , Romain Costes (1, 2) , Ji Fan (1) , Aurelian Crunteanu (1) , Valérie Madrangeas (1) , Dominique Cros (1) , M. Paté (2) , Jean-Pierre Ganne (2) , P. Monteil (3)

1 MINACOM
2 Thales Research and Technology [Palaiseau]
3 Chelton Telecom and Microwave

This paper presents the design, the fabrication and the measures of a two-pole tunable band-pass filter. The design filter consists of two microstrip resonators loaded by ferroelectric MIM (Metal-Insulator-Metal) capacitors. The capacitors use the Barium Strontium Titanate (BST) ceramics doped by 1% Manganese. The filter tunes from 385 MHz to 420 MHz under 0-380 V of bias. The insertion loss is -2.9 dB at zero bias (385 MHz) and the return loss is - 11 dB at 420 MHz.

Domaines: Electronique

Fiffamen Houndonougbo, Romain Costes, Ji Fan, Aurelian Crunteanu, Valérie Madrangeas, et al.. A 380-420 MHz Two Pole tunable filter using new ferroelectric composite capacitors. EuMW 2010, European Microwave Week, Sep 2010, Paris, France. pp.1134 - 1137. ⟨hal-00619327⟩