Noncontact PIM Measurement Method Using Partial Impedance-Matching Method

Kensuke SAITO  Daijiro ISHIBASHI  Nobuhiro KUGA  

IEICE TRANSACTIONS on Electronics   Vol.E96-C   No.9   pp.1151-1154
Publication Date: 2013/09/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E96.C.1151
Print ISSN: 0916-8516
Type of Manuscript: BRIEF PAPER
passive intermodulation,  microwave measurements,  Nonlinear phenomena,  base station antenna,  coaxial line,  microstrip line,  

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In this letter, we propose a partial impedance-matching method using a two-strip resonator for noncontact Passive Intermodulation (PIM) measurements using a coaxial tube. It is shown that the strip closer to the inner tube of the coaxial tube is dominant in the observed PIM characteristics while both strips are excited equally. The ideal efficiency of power to each strip is 50%, which is a significant improvement in comparison with conventional methods.