| 内容提要: |
Doppler radar has been widely used in a number of applications, such as vital sign detection and gesture characterization detection. Research efforts in this century move the technology development toward lower power, lighter weight, smaller form factor, better accuracy, longer detection range, and more robust operation for practical applications. This has led to various radar front-end architectures from the conventional homodyne/heterodyne to self-/mutual- injection locking. Each of these architectures shows its specific advantage in certain environments. |