Title: On-site Measurement and Comparison of Passive Intermodulation generated from different RF absorbers
Authors: Sayegh, Ahmed, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 2.2, Hochfrequenz und Felder, ORCID: 0000-0001-9372-1365
Kuhlmann, Karsten, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 2.2, Hochfrequenz und Felder, ORCID: 0000-0002-4022-7061
Gellersen, Frauke, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 2.2, Hochfrequenz und Felder, ORCID: 0000-0001-9062-292
Kleine-Ostmann, Thomas, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 2.2, Hochfrequenz und Felder, ORCID: 0000-0001-6342-931
Contributors: HostingInstitution: Physikalisch-Technische Bundesanstalt (PTB), ISNI: 0000 0001 2186 1887
Pages:7
Language:en
DOI:10.7795/810.20240206
Resource Type: Text / Article
Publisher: Physikalisch-Technische Bundesanstalt (PTB)
Rights: Download for personal/private use only, if your national copyright law allows this kind of use.
Dates: Available: 2024-02-06
Created: 2022-10
File: Download File (application/pdf) 1.20 MB (1253264 Bytes)
MD5 Checksum: 252f87022e3e9b022cd6c67f9799f21b
SHA256 Checksum: 94de99147ab61424df312f6a75dfb15fec3951a7d44e50943e359d4c5cacdf1f
Keywords: Passive Intermodulation ; PIM ; Uncertainty budget ; Uncertainty
Abstract: The accurate measurement of Passive intermodulation (PIM) generated from RF radiating components requires an interference-free environment. The anechoic chamber environment is a suitable option to avoid any external interference that may disturb the PIM measurement. However, RF absorbers in anechoic chambers can be a potential source of PIM and thus affect the measurement accuracy. This paper presents a detailed evaluation of PIM performance for five kinds of absorbers from different manufacturers. It is confirmed that some RF absorbers can be a potential source of PIM. The obtained results show that the conductive carbon material used in fabricating the WAVASORB® VHP-8 absorber, EHP- 5PCL absorber and MWA-LFA produces low level of PIM. The nano-metal films incorporated inside Frankonia absorber produces lower PIM compared to carbon-made absorbers. Lastly, the absorber made from EVU material (dry mix of cellulose materials, carbon fibers and other components) produces a higher PIM level.
Citation: Sayegh, Ahmed , et Al. On-site Measurement and Comparison of Passive Intermodulation generated from different RF absorbers . Physikalisch-Technische Bundesanstalt (PTB), 2024. DOI: https://doi.org/10.7795/810.20240206
Remark: Mulcopim 2022, 19.-21.10.2022, Valencia, Spain
Funding: Bundesministerium für Digitales und Verkehr (BMDV), Grant Title: 5G-Reallabor in der Mobilitätsregion Braunschweig-Wolfsburg