Complex permittivity measurements using cavity perturbation technique with substrate integrated waveguide cavities

Lobato‐Morales, Humberto; Corona‐Chávez, Alonso; Murthy, D. V. B.; Olvera‐Cervantes, José‐Luis

doi:10.1063/1.3442512

Cited by 59 publications

(31 citation statements)

References 4 publications

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“…1, since they have high Q, are highly sensitive to material properties and have minimum radiation effect. This technology has been reported in the past for measuring complex permittivity of dielectric materials [4], [5]. The resonant frequency of these resonators for TE 102 or TE 103 modes of operation is determined by the dimensions of the SIW.…”

Section: B Siw Cavity Resonatormentioning

confidence: 99%

Magneto-dielectric material characterization and antenna design for RF applications

Han¹,

Swaminathan²,

Pulugurtha

et al. 2014

The 8th European Conference on Antennas and Propagation (EuCAP 2014)

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Antenna miniaturization without deteriorating performance is challenging because the performance is bounded by fundamental limits depending on the size of the antenna. Magneto-dielectric materials, however, have been reported as providing new possibilities for antenna miniaturization in many recent studies. In this paper, a novel material characterization method which is a cavity perturbation technique (CPT) with substrate integrated waveguide (SIW) cavity resonator is presented for extracting the properties of magneto-dielectric material. CPT formulas for extracting complex permittivity and complex permeability are explained and modification process using 3D EM simulation tool is discussed. Design and fabrication of SIW cavity resonators is presented. The frequency dependent properties of permittivity and permeability for synthesized magneto-dielectric material are extracted in the frequency range of 1-4 GHz. Microstrip patch antenna working at 1GHz on magneto-dielectric substrate has been designed and simulated in this paper.

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Section: B Siw Cavity Resonatormentioning

confidence: 99%

Magneto-dielectric material characterization and antenna design for RF applications

Han¹,

Swaminathan²,

Pulugurtha

et al. 2014

The 8th European Conference on Antennas and Propagation (EuCAP 2014)

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“…The resonant type sensors are frequently used to measure the complex permittivity and permeability of materials due to their high accuracy and sensitivity. The resonant sensors based on planar technology are preferred in comparison to the conventional waveguide based cavity technique due to their adaptability, low cost, and easy integration with other components [1]- [6]. The planar resonant sensor based on the surface integrated waveguide (SIW) technology appears to be a viable option, which has been explored by few research groups [1], [2], [6].…”

Section: Introductionmentioning

confidence: 99%

“…The resonant sensors based on planar technology are preferred in comparison to the conventional waveguide based cavity technique due to their adaptability, low cost, and easy integration with other components [1]- [6]. The planar resonant sensor based on the surface integrated waveguide (SIW) technology appears to be a viable option, which has been explored by few research groups [1], [2], [6]. The main problem associated with such a type of sensors is the low intensity and sinusoidal varying electric field, which is getting perturbed by the finite volume of the sample [14]- [17].…”

Section: Introductionmentioning

confidence: 99%

Design of Multilayered Epsilon-Near-Zero Microwave Planar Sensor for Testing of Dispersive Materials

Jha

Akhtar

2015

IEEE Trans. Microwave Theory Techn.

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A novel planar multilayered epsilon-near-zero (ENZ) tunnel sensor based on fully laminated surface integrated waveguide (SIW) technology is proposed for the microwave measurement of dispersive materials. The proposed sensor is designed and optimized using parametric analysis to obtain the multilayered ENZ tunnel dimensions. It is observed that the width of the upper tunnel of the designed two-tunnel sensor should be at least half of the SIW width of the actual SIW structure for the multiband operation. The complex permittivity measurement using the proposed sensor is possible at two frequencies with a single set of measurement data. The proposed method is based on perturbation of the squeezed electric field having constant magnitude and high intensity inside the multilayered ENZ tunnel, which eventually increases the sensitivity of the proposed sensor. The sensitivity and accuracy of the proposed sensor are tested using both the simulated and the experimented data. It is found that the proposed sensor is highly sensitive, and typically demonstrates 6% error under ideal conditions, thus making it a good candidate for the microwave measurement of dispersive materials.Index Terms-Cavity perturbation methods, dispersive materials, epsilon-near-zero (ENZ), microwave sensors, permittivity measurement, substrate integrated waveguide (SIW). 0018-9480

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“…Several applications, including medical, pharmaceutical, industrial, food, and hydrological, among others, are interested in using microwaves for the measurement of the properties of materials due to the use of low-profile sensors, low power-consumption devices, accuracy in the analysis methods, and realtime testing [1]- [7]. Most of the microwave sensors have been designed for the measurement of complex dielectric permittivity of materials as it offers information of the sample-under-test (SUT) properties, such as moisture contents, microwave absorption, density, temperature, among others [1]- [6]. The most used method for dielectric characterization of materials is based on resonant techniques, due to its high accuracy and high sensitivity [5], [6].…”

Section: Introductionmentioning

confidence: 99%

Wireless Sensing of Complex Dielectric Permittivity of Liquids Based on the RFID

Lobato‐Morales

Corona‐Chávez

Olvera‐Cervantes

et al. 2014

IEEE Trans. Microwave Theory Techn.

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A wireless sensing system for the evaluation of the complex dielectric permittivity of solvent liquids is presented. Two sensing tags are proposed for testing of the samples. The first tag is based on a cavity resonator and the second makes use of the epsilon-near-zero effect. Both circuits are designed over the planar substrate-integrated-waveguide (SIW) technology, and operate at 4 GHz. A quartz capillary tube is used for the liquid measurements where only a small amount of sample volume is required. With the addition of planar antennas at the input and output of the sensors, the complete system is implemented for wireless sensing of the materials following the RF identification scheme. The cavity perturbation technique for SIW structures is applied for the dielectric liquid characterization. The proposed sensing tags and system have high potentials for low-cost wireless measurements and real-time monitoring applications.

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Complex permittivity measurements using cavity perturbation technique with substrate integrated waveguide cavities

Cited by 59 publications

References 4 publications

Magneto-dielectric material characterization and antenna design for RF applications

Magneto-dielectric material characterization and antenna design for RF applications

Design of Multilayered Epsilon-Near-Zero Microwave Planar Sensor for Testing of Dispersive Materials

Wireless Sensing of Complex Dielectric Permittivity of Liquids Based on the RFID

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