Fast Prediction Method for PIM Distribution on Waveguide Temperature Compensation Structure Using DC Non-Linearity Diagnosis

Chang Che1; Xiong Chen1; Ming Yu2

10.1109/IWS58240.2023.10222462

2023

979-8-3503-3654-2

2023 IEEE MTT-S International Wireless Symposium (IWS)

1-3

14-17 May 2023

Qingdao, China

This paper proposes a fast prediction method for PIM distribution in the waveguide resonator with temperature compensation (TC) structure. When faced with temperature changes, the waveguide filters expand or contract, affecting the size-dependent resonant frequency. Therefore, filters with high selectivity necessitate temperature compensation structures to ensure thermal stability under stringent circumstances, especially in space applications. Structural connections and contacts always exist in the TC structures, serving as typical sources of passive intermodulation (PIM). When compensation appears, the mechanical deformation accompanying thermal stress will complicate the PIM analysis. DC non-linearity diagnosis is applied in this proposed method, which can fast predict the PIM distribution in TC structures without the PIM test. This prediction method can significantly cut off the testing cost and attain high efficiency in PIM analysis.

Wireless communication Waveguide transitions Temperature distribution Resonator filters Prediction methods Transformers Thermal analysis

其他

EI

20233814749634

Circular waveguides ; Forecasting ; Natural frequencies ; Space applications ; Temperature distribution ; Thermal conductivity

Thermodynamics:641.1 ; Space Flight:656 ; Electric Filters:703.2 ; Waveguides:714.3

IEEE

1.Electronic Engineering Department, The Chinese University of Hong Kong, Hong Kong SAR, China
2.Shenzhen Key Laboratory of EM Information, Southern University of Science and Technology, Shenzhen, China

Chang Che,Xiong Chen,Ming Yu. Fast Prediction Method for PIM Distribution on Waveguide Temperature Compensation Structure Using DC Non-Linearity Diagnosis[C],2023:1-3.