Novel ferroelectric materials for phased array antennas
Novel ferroelectric materials for phased array antennas
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DOI：
10.1109/58.655193
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发表时间：
1997-07
期刊：
影响因子：
--
通讯作者：
L. Sengupta;S. Sengupta
中科院分区：
文献类型：
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作者：
L. Sengupta;S. Sengupta
钡锶钛氧化物（BSTO）与其他非电活性氧化物陶瓷相结合的各种复合材料已被制定为相控阵天线的应用。一般来说，复合材料具有可调节的电子性能，可以定制用于相控阵天线和其他相移装置。介电常数和损耗角正切已被减小，以增强整体阻抗匹配，从而降低器件的插入损耗。此外，整体可调谐性，即介电常数随施加电压的变化，保持在足够高的水平。为了解决微波区域的宽频率范围，复合材料已制成体陶瓷、厚膜和薄膜形式。本文讨论了在MHz和GHz频率的复合材料的加工，材料表征和电子性能。
Various composites of barium strontium titanium oxide (BSTO) combined with other nonelectrically active oxide ceramics have been formulated for application in phased array antennas. In general, the composites have adjustable electronic properties which can be tailored for use in phased array antennas and other phase shifting devices. The dielectric constant and the loss tangents have been reduced to enhance the overall impedance matching and thereby lowering the insertion loss of the device. In addition, the overall tunability, the change in the dielectric constant with applied voltage, is maintained at a sufficiently high level. In order to address a broad frequency range in the microwave region, the composites have been fabricated in bulk ceramic, thick film, and thin film form. This article discusses the processing, material characterization, and electronic properties of the composites in MHz and GHz frequencies.