The rapid advancement of radio-frequency (RF), infrared, and optical technologies has enabled many wireless-sensing approaches for novel biomedical applications, such as implantable medical devices, characterization of biological materials, wireless neural prostheses, non-contact health monitoring, and remote-human-motion classification. Some applications entered human daily life shortly after their invention, significantly improving the productivity and life quality in our society. Some emerging applications have shown great potential to benefit the wellbeing of humans but are still under development to overcome technical challenges and incorporate human-factor considerations. With solutions ranging from sensor-on-chip to bench top systems, biomedical wireless sensing has drawn enormous interests from researchers and practitioners in private organizations, academic institutions, and industrial research centers.