Yes I can help you to a degree. But with you being a student, that will limit my help. You will have to do the design work, and I can help guide you to the extent of suggestions, corrections, ideas, etc.
First off, do you have access to a calibrated frequency standard, which is traceable to a secondary or tertiary standard, minimum? Second, do you have at least a block diagram of what you are trying to accomplish? Third, do you have an idea of the exicitation/reception probe necessary for the sample under test and its proximity to the sample? I ask these questions to see how much you already have invested in this project and if you are willing to carry it through to fruition.
Merv