QuickWave
software for electromagnetic design
Designed by Janusz Rudnicki
Shelley Begley and Stoyan Ganchev of Agilent Technologies present QWED's resonators for material measurements as an equipment supplementing Agilent's Network Analysers.
Updated: January 07, 2009
Resonators Measurement Hints
QWED manufactures several types of resonators (also referred to as test fixtures) for precise measurements of electromagnetic properties of materials at microwave frequencies. Each resonator is equipped with specialised software for extracting the relevant data (typically, complex permittivity or real permittivity and loss tangent) from measurements. The resonators and the accompanying software are based on years of research led by QWED's expert Prof. Jerzy Krupka and documented in dozens of worldwide-appreciated scientific and technical publications. The quality of the resonators has been recognised by industrial practitioners, leading researchers, and industrial standard creators. QWED is especially proud of recognition by Agilent Technologies who decided to supplement their 85071E Material Measurement Software with Option 300 serving directly QWED's Split Post Dielectric Resonators as described in Technical overview: Agilent 85071E Material Measurement Software and shown in PNA Materials Measurement Demonstration.
All resonators manufactured by QWED, intended for determination of the complex permittivity or other electromagnetic properties of materials, require precise measurements of their resonant frequencies and Q-factors. For some resonators, these parameters have to be measured twice, namely, in the presence and absence of the sample under test; for other resonators, only one measurement is needed - in the presence of the sample. The most accurate apparatus for such measurements at microwave frequencies is automatic network analyser (ANA). Once resonant frequencies, Q-factors, and dimensions of the sample are available, appropriate computations have to be performed using dedicated software provided by QWED for each specific type of a resonator. There are two ways of performing the calculations:
All resonators manufactured by QWED, intended for determination of the complex permittivity or other electromagnetic properties of materials, require precise measurements of their resonant frequencies and Q-factors. For some resonators, these parameters have to be measured twice, namely, in the presence and absence of the sample under test; for other resonators, only one measurement is needed - in the presence of the sample. The most accurate apparatus for such measurements at microwave frequencies is automatic network analyser (ANA). Once resonant frequencies, Q-factors, and dimensions of the sample are available, appropriate computations have to be performed using dedicated software provided by QWED for each specific type of a resonator. There are two ways of performing the calculations:
Measurement set-up employing automatic network analyser with installed 85071E option 300 software and SPDR fixture
Measurement set-up employing automatic network analyser, SPDR fixture and software for dielectric properties calculation installed on standard PC
| • | The users who have access to one of the PNA/ENA Series network analysers by Agilent Technologies equipped with 85071E Material Measurement software Option 300 simply upload QWED software to the network analyser and obtain the final results directly on its display. |
| • | The users working with different network analyser configurations need to upload QWED software and network analyser measurement results to a standard PC computer and obtain the final results on the PC display. |