RF Properties of LTCC BST Thick Film Made by MicroPen
Autor: | Ahmad Safari, Vamsi Krishna Palukuru, Heli Jantunen, Chi Shiung Hsi, Tao Hu |
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Rok vydání: | 2009 |
Předmět: | |
Zdroj: | Ferroelectrics. 388:17-22 |
ISSN: | 1563-5112 0015-0193 |
Popis: | The direct-writing technique by MicroPen provides maskless fabrication method for complex and multilayer structures. In this work, low-temperature co-firing ceramic (LTCC) BST paste was fabricated and structures for high frequency evaluation were formed by MicroPen. The results showed uniform microstructures with some porosity after sintering at 900 °C. The dielectric properties were characterized in the frequency range of 0.5 to 13.5 GHz using coplanar waveguides. The ϵ r and tanδ of the LTCC BST thick film were 57.5–41 and 0.013–0.007 with applied electric field of 0-10 V/μm, respectively at 5 GHz. The tunability obtained was 28 % at 10 V/μm. |
Databáze: | OpenAIRE |
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