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Influence of the biasing scheme on the performance of au/srtio3/laalo3 thin film conductor/ferroelectric tunable ring resonators
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Romanofsky, R. R. Bohman, D. Y. VanKeuls, F. W. Miranda, F. A. |
| Copyright Year | 1998 |
| Description | The performance of gold/SrTio3 /LaAlO3 conductor/ferroelectric/dielectric side-coupled, tunable ring resonators at K-band frequencies is presented. The tunability of these rings arises from the sensitivity of the relative dielectric constant (Er) of SrTiO 3 to changes in temperature and dc electric fields (E). We observed that the change in F-, which takes place by biasing the ring up to 450 V alters the effective dielectric constant (e-eff) of the circuit resulting in a 3k resonant frequency shift of nearly 12 % at 77 K. By applying a separate dc bias between the microstrip line and the ring, one can optimize their coupling to obtain bandstop resonators with unloaded quality factors (Q(sub o)) as high as 12,000. The 31 resonance was tuned from 15.75 to 17.41 GHz while keeping Q. above 768 over this range. The relevance of these results for practical microwave components will be discussed. |
| File Size | 602153 |
| Page Count | 14 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19980197303 |
| Archival Resource Key | ark:/13960/t6353kp3p |
| Language | English |
| Publisher Date | 1998-05-01 |
| Access Restriction | Open |
| Subject Keyword | Solid-state Physics Thin Films Q Factors Superconducting Films Ferroelectricity Resonant Frequencies Microwave Equipment Dielectrics Resonators Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
