"A Conceptual Model for the Reflection Measurements of a Vector Network Analyzer System and its Practical Application" - Abstract - "We present the gradual building of our conceptual model for the reflection measurements of a VNA Vector Network Analyzer System. In this way, we reveal the fundamental idea behind this kind of measurements and prepare the studier for a deeper comprehension of this subject. Moreover, since this abstract model is exclusively based on technical specifications supplied by the manufacturers of system components, it is directly applicable in practice. To demonstrate this fact, we use a specific VNA System to compute and draw both the frequency dependent systematic error parameters of it and of the reflection coefficient and input impedance of a particular antenna we constructed and measured by using it." - Nikolitsa I. Yannopoulou and Petros E. Zimourtopoulos, Antennas Research Group, Austria, EU,
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