Ferroelectric tunable microstrip Lange coupler for K-band applications
Publication Type
Conference Paper
Authors
Subramanyam, G., F.A. Miranda, R.R. Romanofksy, F.W. Van Keuls, C.L. Canedy, S. Aggarwal, T. Venkatesan, Ramamoorthy Ramesh
Abstract
We report on the modeled and experimentally verified performance of a gold/Ba0.6Sr0.4TiO3 (BSTO) ferroelectric/magnesium oxide (MgO) two-layered microstrip electrically tunable Lange coupler. Tight coupling of 3 dB or higher was obtained over a frequency range of 14 to 19 GHz. The coupled power level was electrically tunable from -11.5 to -5.5 dB at 20 GHz with an applied dc electric field of 1.6 V/μm. This work demonstrates another advantageous application for ferroelectric thin-films in passive microwave components at K-band frequencies.
Journal
IEEE MTT-S International Microwave Symposium Digest
Volume
3
Year of Publication
2000
ISSN
0149645X