Ku-Band 3D LTCC Filter and BST-Varactor based Temperature Compensated Resonator

Author

Gautier, William ; Ziegler, Volker ; Stehle, Armin ; Schoenlinner, Bernhard ; Prechtel, Ulrich ; Menzel, Wolfgang

Author_Institution

EADS Deutschland GmbH, Munich

fYear

2009

fDate

16-18 March 2009

Firstpage

1

Lastpage

4

Abstract

In this paper, a two-pole cavity resonator filter intended for UAV data-link at Ku-band is demonstrated. The design of the filter realised with LTCC integrated cavity resonators is described and validated by good agreement between specifications and measurements. The unloaded Q-factor of the proposed substrate integrated cavity resonator is assessed and the influence of the different lossy mechanisms present in the resonator is discussed. Finally, the RF-behaviour of a weakly-coupled doubly-terminated cavity resonator is investigated over temperature. A solution implementing a ferroelectric varactor coupled to the cavity resonator is assessed for the compensation of the shift of the resonance frequency observed for the substrate integrated resonator. The unloaded Q-factor of the temperature compensated resonator is measured and compared to the one of the un-compensated cavity.

Keywords

Q-factor; cavity resonator filters; ceramic capacitors; ceramic packaging; compensation; crystal filters; ferroelectric capacitors; microwave filters; varactors; 3D LTCC filter; BST-varactor; Q-factor; cavity resonators; ferroelectric varactor; temperature compensated resonator; two-pole cavity resonator filter; Cavity resonators; Ceramics; Ferroelectric materials; Frequency; Joining processes; Q factor; Resonator filters; Temperature; Unmanned aerial vehicles; Varactors; cavity resonator filters; ceramics; ferroelectric capacitors; thermal factors;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2009 German

Conference_Location

Munich

Print_ISBN

978-3-9812668-0-1

Electronic_ISBN

978-3-8007-3150-3

Type

conf

DOI

10.1109/GEMIC.2009.4815905

Filename

4815905