Janielle Johnson

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The results of this paper show that the backscatter from an RFID tag can be strongly influenced by the presence of other tags. This occurs even if the tag spacing is not very small. In fact, for tag spacings approaching normal antenna array spacings, the group of tags appears to behave like a parasitically coupled antenna array. The change in tag(More)
Ultrafiltration (UF) membranes are required in the biopharmaceutical industry to concentrate or purify the final biologic product, thereby ensuring patient safety and fulfilling regulatory requirements. It is crucial that biotechnology clients select the optimal operating parameters for each filtration step. Unsuccessful filtrations might fail to purify a(More)
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