Characterization and Performance Analysis of BST-Based Ferroelectric Varactors in the Millimeter-Wave Domain

被引：13

作者：

Crunteanu, Aurelian ^{[1
]}

Muzzupapa, Vincent ^{[1
]}

Ghalem, Areski ^{[1
]}

Huitema, Laure ^{[1
]}

Passerieux, Damien ^{[1
]}

Borderon, Caroline ^{[2
]}

Renoud, Raphael ^{[2
]}

Gundel, Hartmut W. ^{[2
]}

机构：

[1] Univ Limoges, XLIM, UMR 7252, CNRS, 123 Ave Albert Thomas, F-87060 Limoges, France

[2] Univ Nantes, IETR, UMR 6164, CNRS, 2 Rue Houssiniere, F-44322 Nantes 3, France

来源：

CRYSTALS | 2021年 / 11卷 / 03期

关键词：

ferroelectric thin films; BST; interdigited capacitors;

D O I：

10.3390/cryst11030277

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

We present the realization and analysis of the microwave performances of interdigited varactors integrating thin ferroelectric layers of barium and strontium titanate (BaxSr1-xTiO3). Devices based on ferroelectric films of different compositions (x = 0.8 and x = 0.5) have been characterized in the millimeter-wave domain, from 200 MHz to 110 GHz. By applying different bias voltages, the tunability of the capacitance can reach up to 40% for the Ba0.8Sr0.2TiO3 composition, under relatively low applied electric fields of about 167 kV/cm. These promising characteristics allow the integration of the varactor devices in tunable antennas for a large frequency domain, from the microwaves to the millimeter waves range.

引用

页码：1 / 10

页数：10

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