A simple electrically small microwave sensor based on complementary asymmetric single split resonator for dielectric characterization of solids and liquids

被引：10

作者：

Viswanathan, Anila P. ^{[1
,2
]}

Moolat, Remsha ^{[1
]}

Mani, Manoj ^{[1
]}

Shameena, V. A. ^{[1
]}

Pezholil, Mohanan ^{[1
]}

机构：

[1] Cochin Univ Sci & Technol, Ctr Res Electromagnet & Antenna, Dept Elect, Cochin 22, Kerala, India

[2] Mar Athanasius Coll Engn, Cochin, Kerala, India

来源：

INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING | 2020年 / 30卷 / 12期

关键词：

electrically-small; metamaterial; quality factor; sensor; split-ring resonator; COMPLEX PERMITTIVITY;

D O I：

10.1002/mmce.22462

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

The article presents an asymmetric single split resonator (ASSR) unit cell, its resonant properties, and an electrically small microwave sensor employing the complementary asymmetric single split resonator (CASSR) structure with high quality factor (Q) on the FR4 substrate. The structure is compared with the conventional symmetric split ring resonator. The CASSR sensor designed and fabricated on a substrate of dielectric constant 4.4 and a thickness 1.6 mm has an electrically small size of 0.127 lambda(0) x 0.127 lambda(0) x 0.007 lambda(0)at 1.27 GHz, which yieldska= 0.56 < 1 with low radiation efficiency. The properties and performance of the proposed CASSR for extracting the permittivity of both solid and liquid samples using amplitude and phase sensing in a simple lab-in-touch approach are validated with full-wave simulations and experimental results.

引用

页数：13

共 35 条

[1] Strongly Enhanced Sensitivity in Planar Microwave Sensors Based on Metamaterial Coupling [J].