Improvement of electromagnetic wave absorption ability by reducing impedance oscillation characteristics
Japanese Journal of Applied Physics, ISSN: 0021-4922, Vol: 51, Issue: 1
2012
- 1Citations
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Article Description
Improvement of the electromagnetic wave absorption ability was examined from the electromagnetic point of view. The oscillation behavior in relation to incident impedance derived from a hyperbolic tangent function can be reduced by increasing the imaginary part, i.e., loss value, of permeability and/or permittivity owing to its mathematical characteristics. It was demonstrated that the electromagnetic wave absorption ability was obviously enhanced by inserting the lossy magnetic layer between the electromagnetic wave absorber and a reflector. The absorption ability was improved further by pilling the polyurethane foam plate having lower permittivity to provide-9.6 dB (ca. 89% absorption) for the frequency range above 0.75 GHz with a total absorber thickness of 15.15 mm. © 2012 The Japan Society of Applied Physics.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84855774286&origin=inward; http://dx.doi.org/10.1143/jjap.51.015801; https://iopscience.iop.org/article/10.1143/JJAP.51.015801; https://dx.doi.org/10.1143/jjap.51.015801; https://validate.perfdrive.com/9730847aceed30627ebd520e46ee70b2/?ssa=66f7b107-fac5-4eee-ba06-f96d4c932ea6&ssb=83225201023&ssc=https%3A%2F%2Fiopscience.iop.org%2Farticle%2F10.1143%2FJJAP.51.015801&ssi=55a6f4fa-cnvj-4aa8-9f14-a2de7bbb7c33&ssk=botmanager_support@radware.com&ssm=648735103637726694775626331860255473&ssn=dd6f00614f2ba2258cfb1f7bfe75b3e5bdaf0900c3c4-8990-4f21-a34919&sso=ac35bf8c-bc564dd29deac5efa832dec1ac7e46f02ab4e809a823e1e9&ssp=70844174671726545676172689386563313&ssq=21519971144573343547029239885888510977035&ssr=NTIuMy4yMTcuMjU0&sst=com.plumanalytics&ssu=&ssv=&ssw=&ssx=eyJyZCI6ImlvcC5vcmciLCJfX3V6bWYiOiI3ZjYwMDBkNzYzNGE3Ni05ZTRkLTRjMmMtYjJhMC1mYzAzNGMyZjE1MjkxNzI2NTI5MjM5NDUzMjgyMjA2Mzc1LTU5MThjYmNlYTc0MGE0MDA0Nzc0MzkiLCJ1em14IjoiN2Y5MDAwMGMxZDc2YmItMzk2MS00N2VjLTlkZGItNjdmYTVhZTY2ODdlNS0xNzI2NTI5MjM5NDUzMjgyMjA2Mzc1LTkxNzQ4MWIxNzYwYzFhMzU0NzczOTcifQ==
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