Analyzing and recording the electromagnetic (EM) spectrum up to 100 GHz can be a challenging task, as it requires specialized equipment. While prices can vary depending on the specific requirements and capabilities you're seeking, here's a general outline of a cost-effective approach:
Software-Defined Radio (SDR): Start with an affordable SDR device that covers a wide frequency range. SDRs allow you to receive and process radio signals using software, making them versatile and cost-effective. Popular options include the RTL-SDR dongles, which are inexpensive and cover frequencies up to 1.7 GHz. While they fall short of 100 GHz, they can be a good starting point for understanding and experimenting with the EM spectrum.
Frequency Extenders: To extend the frequency range of your SDR, you may need frequency extenders or converters. These devices convert higher frequencies to a range that your SDR can handle. Companies like Mini-Circuits offer affordable frequency mixers and converters that can be used to downconvert higher frequencies to the range of your SDR.
Downconverters: Another option is to use downconverters specifically designed for higher frequency ranges. Downconverters are used to shift the frequency of signals to a lower range. Companies like NooElec offer downconverters compatible with SDRs that can reach frequencies up to several tens of GHz.
Specialized Hardware: Analyzing frequencies in the 100 GHz range often requires specialized equipment that can be quite expensive. For accurate and reliable measurements, you may need a spectrum analyzer or a vector network analyzer (VNA) capable of handling frequencies up to 100 GHz. These devices tend to be costly, and the prices can vary significantly depending on the specifications and features you require.
Research and Collaboration: Consider exploring academic institutions or research centers that may have access to the necessary equipment. They might have the facilities to help you analyze and record the EM spectrum at higher frequencies. Collaborating with experts in the field could provide you with access to equipment and knowledge while minimizing costs.
Remember that as technology advances, the cost of equipment capable of analyzing and recording higher frequencies tends to decrease. Keeping an eye on the market and new developments may lead you to more affordable solutions in the future.