Abstract
Software-Defined Radio (SDR) has appeared as a sufficient framework for the development and testing of the measurement systems such as a signal generator, signal analyzer, and network analysis used in the network analyzer. However, most of researchers or scientists still rely on commercial analyzers were larger benchtop instruments, highly cost investment and minimum software intervention. In this paper, a new concepts measurement revolution called as Software Defined Instrumentation (SDI) on network analysis is presented, which is based on reconfigurable SDR, a low-cost implementation, ability to access RF chain and utilizing open source signal processing framework. As a result, a Vector Network Analyzer (VNA) has been successful implemented by deploying an SDR platform, test sets, and data acquisition from the GNU Radio software in host PC. The known calibration process on SHORT-OPEN-LOAD (SOL) technique is validated to ensure measurement data from this SDI free from systematic error. Two types of SOL calibration standards used for a comparison study to validate the SDI measurement system which is capable of generating the response on the differential of standard quality and accuracy of standards kits. Finally, calibration uncertainty analysis is also presented in this work by utilizing RF open source package without any cost addition.
Highlights
The Software-Defined Radio (SDR) is an all latest technology being developed in the recent century and is a radio in which some or the entire physical layer functions are software defined [1]
This paper mainly describes the conceptual of Software Defined Synthetic Instruments (SDSI) and not much detail on the low-level implementation of an example of RF instruments
We have presented a new concept of Software-Defined Instrumentation (SDI) based on SDR platform that utilizing an open source signal processing software
Summary
The SDR is an all latest technology being developed in the recent century and is a radio in which some or the entire physical layer functions are software defined [1]. There is still huge potential this SDR can be used for any RF measurement system by replacing the RF front-end system that equipped with the antenna to test set of the measurement system This upgrading functionality of traditional SDR into new instrumentation infrastructure is called as Software-Defined Instrumentation (SDI). In [12, 13], SDI implementation on the signal analyzer is presented using the R5500 real-time spectrum analyzer from open source ThinkRF This module is end-user commercial product dedicated for wireless signal analyzer application such as signal monitoring, surveillance countermeasures, and regulatory monitoring. At this work, a VNA implementation based on SDI technology with integrated RF transceiver in one chip, open source utilization, and well-known calibration procedure is performed and verified with two different standards manufacturer. The calibration procedure is very a critical part of propose VNA measurement system based on SDI implementation
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