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 Technology Profile

Title:

VNA based Broadband Dielectric Measurement Systems for solids (X-band)

Value Proposition:

A Know-how is being developed based on material characterization algorithm, sample holders, and waveguide calibration kit along with a user Proposed technology has three parts.

a) Algorithm to measure dielectric properties along with tangent loss from Scattering parameters of VNA-based measurements of solids for X-band frequencies. The algorithm will work on any VNA platform and is capable to evaluate the Dielectric Properties and tangent loss for any waveguide kit available with the user.

b) Waveguide Calibration Kit along with Algorithm and Sample holder to measure Dielectric Properties and tangent loss of solids for X-band frequencies. This system is valid for any VNA.

c) Evaluation of uncertainty for (a) and (b) both.

1. Simplified NRW procedure-based material property retrieval

2. Fabricated coaxial to waveguide adapters & Sample holders

3. Calibration standards (short, offset, load)

4. Dielectric property extraction algorithm

Summary Application:

Precise knowledge of dielectric permittivity, permeability and loss of materials is a fundamental requisite for the engineering applications of these materials. The dielectric properties of materials play important role in applications like construction of highfrequency electronic components, quality of printed circuit board (PCB) substrate and efficiency of microwave absorption materials. We present accurate and easy to use dielectric property measurement solution for solids based on transmission-reflection method. The method is based on modified NRW procedure with simplified measurement using a VNA based technique.

Advantages:

1. Simplified measurement procedure

2. Accurate measurement with uncertainty analysis

3. Calibration standards along with sample holders to be provided

4. Dielectric property extraction algorithm

Tech. Readiness Level:
CSIR-National Physical Laboratory
CSIR-National Physical Laboratory[CSIR-NPL]
:  director[at]nplindia[dot]org
:91-11-45609201
:https://www.nplindia.in
Industrial Applications: Instrumentation, Appliances, Devices Applications [Instrumentation, Appliances, Devices]