文中介绍测量射频混频器特征的新方法,该方法给出输入匹配、输出匹配和变频损耗的幅度及相位响应,并适用于具有互易变频损耗和镜象响应可以被滤除的混频器。经测量的混频器可对混频器测试系统进行全矢量修正,从而使该测试系统对为非互易的其它混频器进行测量。其突出特点是能对被测混频器进行相位和绝对延迟测量。 Knox提出了测量群延迟方法。该法依赖在宽频范围内测量混频器加上一段端接短路器的空气线的回波损耗,再对响应进行时域变换。从空气线长度中减去对短路器响应的延时,便给出混频器的(双向)延迟。此法的缺点是只适用于宽带混频器,且延迟分辨率受时域分辨率的限制。另外,延迟响应是镜象和 This paper introduces a new method to measure the characteristics of RF mixer. The method gives the amplitude and phase response of input matching, output matching and frequency conversion loss, and it is suitable for a mixer with reciprocal conversion loss and mirroring response that can be filtered out . The measured mixer performs a full vector correction of the mixer test system so that the test system can measure other mixers that are not reciprocal. Its outstanding characteristic is to be able to measure the phase place and absolute delay of the measured mixer. Knox proposed a method of measuring group delay. The law relies on measuring the return loss of the air line of a mixer plus a terminated short-circuit over a wide frequency range and then transforming the response in time-domain. The (bidirectional) delay of the mixer is given by subtracting the response to the crowbar from the airline length. The disadvantage of this method is that it only applies to wideband mixers, and the delay resolution is limited by the resolution in the time domain. In addition, the delayed response is mirroring