“…As the detection distance increases, the output power of PA needs to be greater. To achieve a high output power in mmwave, power combiners [4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19], push-pull structure [20,21], the drainto-gate inductive feedback [22,23], and other technologies are adopted for different PA scenarios separately. No matter which technology is used, there are some fundamental issues, such as matching network and the layout, that appear in most of the structures and techniques.…”