引言在雷达接收机的设计中,为了有效地利用被接收的微弱信号,设计人员往往把相当的注意力集中在接收机的前端上,大部精力化在第一变频级。这是因为它直接影响着接收机的灵敏度,动态范围和最大带宽。随着近来二极管工艺水平的提高,使得微波混频器的设计显出更低的变频损耗成为可能。同时,由于近期混频理论的进一步发展,为混频器的设计展示了更为广阔的前景, INTRODUCTION In the radar receiver design, in order to effectively use the received weak signal, designers tend to focus considerable attention on the front end of the receiver, most of the energy in the first inverter stage. This is because it directly affects receiver sensitivity, dynamic range and maximum bandwidth. With recent advances in diode technology, the design of microwave mixers has made it possible to show lower conversion losses. At the same time, due to the further development of the recent mixing theory, the design of mixer has shown a broader perspective,