Title :
LTCC reduced-size bandpass filters based on capacitively loaded cavities for Q band application
Author :
Ferrand, P. ; Baillargeat, D. ; Verdeyme, S. ; Puech, J. ; Lahti, M. ; Jaakola, T.
Author_Institution :
Faculte des Sci. de Limoges, IRCOM-UMR, Limoges, France
Abstract :
The filter presented here is composed of cavities delimited in a LTCC substrate by a periodic lattice of metallized via-holes. The resort to LTCC technology permits us to improve the structure bulk by adding capacitive posts in the middle of the cavity. I/O CPW feeds are printed on the top face of the substrate and are suitable for planar circuit integration. A filter, functioning around 42.6 GHz with bandwidth at -3 dB of 7% and insertion losses lower than -0.6 dB has been designed and realized with success.
Keywords :
band-pass filters; cavity resonator filters; ceramics; coplanar waveguide components; millimetre wave filters; 42.6 GHz; I-O CPW feeds; LTCC reduced-size bandpass filters; LTCC substrates; capacitive loaded cavities; capacitive post; metallized via-holes; periodic lattices; periodic structures; planar circuit integration; Band pass filters; Conductors; Coplanar waveguides; Dielectric substrates; Electromagnetic fields; Lattices; Metallization; Periodic structures; RLC circuits; Resonant frequency;
Conference_Titel :
Microwave Symposium Digest, 2005 IEEE MTT-S International
Print_ISBN :
0-7803-8845-3
DOI :
10.1109/MWSYM.2005.1517157
