Portable Biomedical Microwave Imaging Using Software- Defined Radio

The design for a portable, inexpensive biomedical microwave imaging device is presented, which uses a Software-Defined Radio (SDR) and a solid-state switching network. To demonstrate the capability of the device, two targets with differing permittivities were simultaneously imaged, and the resulting images were specific enough for the targets to be localised. Minimal time was spent capturing and processing the data, producing images of a body under test in 26 seconds. The total cost of the constructed device was less than $1500 USD and weighed only 4.4 kg, making it a highly accessible device for potential early disease detection.