Mixer Spur Analysis with Concurrently Swept LO, RF and IF: Tools and Techniques: AR_4885.pdf

RF/microwave system design engineers must be able to predict mixer spurs that may be detrimental to their system’s integrity. These spurs can be estimated using industry standard frequency ratio spur charts. However, this method is cumbersome and overwhelming to handle when all three frequencies (LO, RF and IF) involve operational bandwidths. Most computer-based simulations step through at discrete frequencies, possibly missing crucial spur information in the adjacent bands. This article explains the techniques to calculate the spurs and their respective band segments of incidence within the specified LO, RF and IF frequency ranges. These techniques are utilized to develop a comprehensive (yet user-friendly), Web-enabled, new JAVA applet (advanced) for performing double-balanced mixer spurious analysis
From: Microwave Journal Vol. 46 | No. 5 | May 2003 | Pg 212
by Daniel Gandhi, Christopher Lyons

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hittite的东西不错啊！笔记也很值得参考。

通信接收机的中频频率规划有谁设计过？
请总结概括一下。
我最近还在摸索。