High Performance Varactor
| Periodical | Advances in Science and Technology (Volume 67) |
|---|---|
| Main Theme | 12th INTERNATIONAL CERAMICS CONGRESS PART F |
| Edited by | Pietro VINCENZINI, Vojislav V. MITIC, Alois LOIDL and Dino FIORANI |
| Pages | 16-21 |
| DOI | 10.4028/www.scientific.net/AST.67.16 |
| Citation | Andrea Testino, 2010, Advances in Science and Technology, 67, 16 |
| Online since | October, 2010 |
| Authors | Andrea Testino |
| Keywords | BST, PTC, Thermally Stabilized, Tunable Capacitor, Varactor |
| Price | US$ 28,- |
A multi-components multi-layer co-fired ceramic varactor with superior performance is here presented. The concept combines a tunable capacitor with optimized properties in a restricted temperature range with PTCR layers to control the overall device temperature. Different prototypes are produced as demonstrator units; one of them is described in detail. The device may be tuned by a primary bias voltage applied to the capacitor and by a secondary voltage applied to the PTCR to set the working temperature. By proper choice of materials, bias voltage and working temperature, the varactor is optimized to the requested figure of merit for a specific application. The prototype here described has shown a tunability >83% @ 2.75 V//m (Patent Pending)
