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Band-pass filters with (Zr0.8, Sn0.2)TiO4 dielectric resonators

A. IOACHIM1,* , M. G. BANCIU1, L. NEDELCU1, C. A. DUŢU1

Affiliation

  1. National Institute for Materials Physics, P.O. Box MG-7, RO-077125, Bucuresti-Magurele, Romania

Abstract

Band-pass filters with dielectric resonators of (Zr0.8, Sn0.2)TiO4 ceramic materials (ZST) were developed for X-band applications. The ZST materials exhibit a dielectric constant of about 36.8 and low loss in microwave range. A Qxf product higher than 50,000 was achieved for the ZST samples with 0.2 % wt NiO sintering addition. The external coupling was performed using microstrip lines on a substrate of 9.22 dielectric constant and 0.635 mm height. Filters with a minimum insertion loss between 0.46 dB and 1.74 dB, the bandwidth between 40 MHz and 170 MHz and with the central frequency around 10 GHz were manufactured..

Keywords

Ni doped ZST, Dielectric resonators, X-band filter.

Submitted at: March 15, 2006
Accepted at: May 18, 2006

Citation

A. IOACHIM, M. G. BANCIU, L. NEDELCU, C. A. DUŢU, Band-pass filters with (Zr0.8, Sn0.2)TiO4 dielectric resonators, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 3, pp. 941-943 (2006)