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Scattering parameter measurements in the presence of crosstalk is a well documented problem. The available calibration methods, suited for the general 16-term error model, capable of taking the crosstalk into account, suffer from the required Thru-Standard, which has to be perfectly known. This information is hard to acquire in some cases. An approach which makes the advantage of the 7-term SOLR (Short-Open-Load-Reciprocal)...
The calibration of test fixtures or the estimation of their performance are well known tasks. In the case of fixtures with variable length, there are some established methods to de-embed the DUT (Device Under Test). The calibration or evaluation of a fixture with a fixed length, like a socket or a probe-card offers less possibilities. This contribution presents a novel calibration procedure, capable...
A non-destructive microwave measurement setup for broadband complex permittivity determination of solid materials over a frequency band from 0.05 GHz to 6 GHz is presented. The setup design was optimized for measurements of glass materials with planar and convex surfaces, but works with other dielectric materials as well. The measurement method is based on the near field coupling of two open-ended...
Production test of RF and electronic circuits is mainly driven by two restrictions, the initial investment in the equipment and the required measurement time, mostly describing the overall cost of test. This is one reason for the increased interest in synthetic instrumentation. The measurement of complex scattering parameters using synthetic instruments has been demonstrated. Improvement of the measurement...
In this work, localization by means of DOA (Direction of Arrival) estimation is investigated. A newly developed low-cost planar linear array and improved receiver hardware is calibrated and evaluated by the use of a dedicated measurement aircraft, not based on ADS-B (Automated Dependent Surveillance-Broadcast) airborne position telegrams. It will be shown how this DOA sensor closely approaches theoretic...
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