CMOS millimeter-wave imaging techniques

Techniques for implementing millimeter-wave imaging systems in CMOS technology are presented. Several imaging receivers for non-coherent imaging based on super-regenerative receivers are demonstrated.;A digital regenerative reception technique is which provides a time-encoded output to allow for digital routing of a focal plane array. Multi-stage regenerative reception techniques are also presented which allow for improved sensitivity and super-regenerative gain in imaging receivers. Antenna-less regenerative reception is then presented which offers improved imaging receiver noise performance and small receiver area for focal plane array applications. Inter-modulated regenerative reception is presented as a means to image in multiple bands, and operate above fmax, the device unity gain frequency. Quench-synchronized focal plane arrays are presented which allow super-regenerative receivers to operate in close proximity without suffering from quench coupling super-regenerative interference.;A 3D imaging radar based on successive-approximation ranging is presented which achieves sub-cm resolution in all CMOS implementation. Finally the implementation of the 3D imaging radar transmitter, receiver, and synthesizer is discussed.