Referenced Items are not available for this document.
We report on YBCO/strontium titanate (STO) thin film K-band tunable bandpass filters on lanthanum aluminate substrates. The 2 pole filters were designed for a center frequency of 19 GHz and 4% bandwidth. Tunability is achieved through the nonlinear DC electric field dependence of the relative dielectric constant of STO (/spl epsiv//sub rSTO/). Center frequency shifts greater than 2 GHz were obtained at a 400 V bipolar DC bias at temperatures below 77 K, with minimal degradation in the insertion loss of the filters.
Published in:
Microwave Symposium Digest, 1998 IEEE MTT-S International
(Volume:2
)
Date of Conference: 7-12 June 1998
- Page(s):
- 1011 - 1014 vol.2
- Meeting Date :
- 07 Jun 1998-12 Jun 1998
- ISSN :
- 0149-645X
- Print ISBN:
- 0-7803-4471-5
- INSPEC Accession Number:
- 5999463
- Conference Location :
- Baltimore, MD, USA
- Digital Object Identifier :
- 10.1109/MWSYM.1998.705164
- Product Type:
- Conference Publications
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