temperature compensation of re...

temperature compensation of resonators using different materials and suitable dime nsionsTemperature Compensation of Resonators Using Different Materials and Suitable Dimensions
Johannes Müller, Michael Hft
Communications Laboratory of European Technology Center (www.panasonic-eutc.com), Panasonic Electronic Devices Europe GmbH, Zeppelinstr. 19, D-21337 Lueneburg, Germany, Phone: +49 (0) 4131 899-228, fax: +49 (0) 4131 899-262, email: Michael.Hoeft@eu.panasonic.com

Abstract ― The mode-matching method is applied to synthesize stepped combline resonators with a perfectly compensated temperature characteristic. Besides a convenient choice of materials, emphasize is put on the correct choice of the dimensions, to obtain a trade-off with the resonators quality factor. Several resonators have been fabricated to verify the accuracy of the method. A 2.14 GHz, 9-pol filter was designe