Space mapping filter design and tuning techniques

Abstract

A common strategy to reduce the cost of a filter is to use a manufacturing technique with an intermediate accuracy and use tuning elements to compensate for the manufacturing errors. However, including tuning elements in the final EM simulations, and tuning the filters after manufacturing, can be quite challenging. In this context, therefore, we review in this paper two powerful filter design procedures based on Aggressive Space Mapping (ASM), and two semi-automatic tuning techniques. As a validation, we describe in detail the design and tuning of two types of filters that are commonly used for both space and ground applications, namely, a six-pole inductive filter in rectangular waveguide, and a more complex five-pole filter based on dual-mode resonators.

An Early History of Optimization Technology for Automated Design of Microwave Circuits

“…Diverse commercially available EDA systems have been used to implement fine models of the optimized structures, and more recently, measurement-based physical platforms have also been exploited as "fine models", both in classical microwave design challenges [182], [183], [184], [185], [186], [187], [188], [189], [190], [191], [192], as well as in other related fields, such as high-speed digital design [193], [194], [195], [196] , opening new challenges and opportunities [197]. Fig.…”