Analysis and Optimization of Passive Intermodulation in Microwave Coaxial Cavity Filters

We studied how the passive intermodulation (PIM) power arising in air cavity filters could be calculated and how the design of the filter could be optimized in order to reduce the amplitude of the PIM signal. To do this, using simulated results, we optimized the various parameters of a filter. PIM i...

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Bibliographic Details
Published in:ETRI journal 2003, 25(2), , pp.133-139
Main Authors: Cho, In-Kui, Kim, Jin-Tae, Jeong, Myung-Yung, Choy, Tae-Goo, Kang, Young-Il
Format: Article
Language:Korean
Subjects:
전자/정보통신공학
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Summary:We studied how the passive intermodulation (PIM) power arising in air cavity filters could be calculated and how the design of the filter could be optimized in order to reduce the amplitude of the PIM signal. To do this, using simulated results, we optimized the various parameters of a filter. PIM in an air cavity filter depends on the power dissipated in its cavities. A reduction of this power loss therefore decreases the PIM power in the air cavity filter. Our experimental results confirm that it is possible to design and produce air cavity filters that generate low PIM signals.
ISSN:1225-6463
2233-7326