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Accessible broadband network analysis

Radio frequency network analysis is a powerful and versatile analysis tool. Due to the extremely high cost of vector network analyzers and their lack of portability, their use has been limited exclusively to advanced engineering and laboratory applications. Deploying such forms of instrumentation on a large scale would require the cost of such instruments to be significantly reduced, while retaining a useful subset of their current functionality. We have developed an instrument that has a parts cost of $125, and is capable of carrying out basic reflection measurements across a large frequency range. In addition, we have applied this instrument to several test applications: Chipless RFID tag reading, milk quality analysis and postal mail content analysis, and have demonstrated the usefulness of this instrument for these applications. Aside from these applications, a portable and low-cost network analyzer provides an accessible platform for new and interesting applications of network analysis to be developed. Thesis Supervisor: Neil Gershenfeld Title: Associate Professor of Media Arts and Sciences