Some Theory and Preliminary Experiments on Microwave Radiometry of Biological Systems

The theory of microwave radiometry of biological systems is outlined. To check theoretical predictions, an X-band microwave radiometer of the correlation type has been built. More recently, a new series of experiments have been conducted with a self-nulling Dicke radiometer operating at 9.2 GHz. Preliminary experiments performed on humans and some lower animals and plant vegetation show, in principle, the correctness of the theory.