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Automated Microwave Filter Tuning Using Curve Similarity and Weighted Least Squares
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- Authors
- Changsoo Kwak, Manseok Uhm, Inbok Yom, Hyo Joon Eom
- Issue Date
- 2012-11
- Citation
- IEEE Microwave and Wireless Components Letters, v.22, no.10, pp.539-541
- ISSN
- 1531-1309
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- This letter presents an automated microwave filter tuning algorithm that emulates manual tuning. Measured S-parameter curve's shape similarity and value similarity with a target one are utilized for coarse tuning. A sensitivity matrix of S-parameter curve's feature points and a weighted least squares method are used for fine tuning. The utility of algorithm is demonstrated with an X-band four-pole dual-mode cavity filter. © 2001-2012 IEEE.
- KSP Keywords
- Cavity filter, Curve similarity, Dual-Mode, Least Squares(LS), Microwave filters, Shape similarity, Tuning algorithm, coarse tuning, feature points, filter tuning, fine-tuning