Determination of Effective Constitutive Properties of Metal Powders at 2.45 GHz for Microwave Processing Applications
-
M. Jaleel Akhtar
,
Nilesh K. Tiwari
Abstract
A reflection-transmission based rectangular waveguide approach for measuring the effective constitutive properties of metal powders at 2.45 GHz is presented. The measured effective dielectric properties of these metal powders are quite important for sintering of metal powders using microwaves, which is a new area of research. The proposed method is based on placing the metal powders of varying density into a standard glass tube, which is then positioned inside a specially designed waveguide holder for measuring the scattering coefficients at 2.45 GHz using a vector network analyser. The effective constitutive properties of the metal powders are obtained in terms of the measured scattering coefficients using the proposed two step approach. In order to validate the accuracy of the measured material properties, an electromagnetic core-shell model of the metal powders is developed. Finally, the effective dielectric properties of Cu and stainless steel powders are measured and compared with the values obtained using the electromagnetic model.
©[2014] by Walter de Gruyter Berlin Boston
Articles in the same Issue
- Masthead
- Design of a 4-element Antenna Array for BDS Anti-jamming Applications
- Performance Analysis of Coaxial Fed Stacked Patch Antennas
- Dual-band Circularly Polarized Aperture Coupled Annular-ring Microstrip Antenna for GNSS Applications
- Wideband Gap Coupled Assembly of Rectangular Microstrip Patches for Wi-Max Applications
- Broadband SIW Sequential Feeding Network
- Hybrid SIW-GCPW Cruciform Directional Coupler
- Propagation Characteristics of Rectangular Waveguides at Terahertz Frequencies with Finite-Difference Frequency-Domain Method
- Novel Polarization Splitter Based on Highly Birefringent Dual-core Photonic Crystal Fibers with Hollow Ring Defects
- Optimal Design of Broadband Ultra-flattened Dispersion Photonic Crystal Fiber Using Genetic Algorithm
- Use of the Stokes Parameters of FBG for Transverse Strain Sensing and the Optimization of the Grating Structure
- Determination of Effective Constitutive Properties of Metal Powders at 2.45 GHz for Microwave Processing Applications
- Thermal Impact on the Performance of Highly Efficient Multi-stage Depressed Collector for Space TWT
Articles in the same Issue
- Masthead
- Design of a 4-element Antenna Array for BDS Anti-jamming Applications
- Performance Analysis of Coaxial Fed Stacked Patch Antennas
- Dual-band Circularly Polarized Aperture Coupled Annular-ring Microstrip Antenna for GNSS Applications
- Wideband Gap Coupled Assembly of Rectangular Microstrip Patches for Wi-Max Applications
- Broadband SIW Sequential Feeding Network
- Hybrid SIW-GCPW Cruciform Directional Coupler
- Propagation Characteristics of Rectangular Waveguides at Terahertz Frequencies with Finite-Difference Frequency-Domain Method
- Novel Polarization Splitter Based on Highly Birefringent Dual-core Photonic Crystal Fibers with Hollow Ring Defects
- Optimal Design of Broadband Ultra-flattened Dispersion Photonic Crystal Fiber Using Genetic Algorithm
- Use of the Stokes Parameters of FBG for Transverse Strain Sensing and the Optimization of the Grating Structure
- Determination of Effective Constitutive Properties of Metal Powders at 2.45 GHz for Microwave Processing Applications
- Thermal Impact on the Performance of Highly Efficient Multi-stage Depressed Collector for Space TWT
