Abstract
Ultra-Wideband Robust RCS Reduction with Triangle-type AMC Structure
Highlights
With the rapid development of stealth and detection technology, there is an urgent need for electromagnetic invisibility or transparency materials, especially in military applications [1,2,3,4]
Two different-shaped Artificial magnetic conductor (AMC) structures were introduced in a checkerboard surface to obtain a –10dB radar cross section reduction (RCSR) bandwidth of 41% and 85%, respectively in [19], [20]
In [21], two different types of non-absorptive AMC structures were arranged in an aperiodic fashion to distribute the scattered energy into six lobes, and a –6dB RCSR bandwidth of 66.67% is achieved as a result
Summary
With the rapid development of stealth and detection technology, there is an urgent need for electromagnetic invisibility or transparency materials, especially in military applications [1,2,3,4]. The RCSR bandwidth is relatively narrow and the proposed structures cannot work well at lower frequencies When it comes to antenna array RCSR, especially for closely-spaced array, the problem that limited space between array elements cannot accommodate so many AMC units may arise, let alone for ultra-wideband RCSR. A 180°± 30° reflection phase difference between every two of the three units nearly covers from 3.98 GHz to 18.84 GHz to broaden the RCSR bandwidth In this way, over –3dB RCSR is achieved nearly from 4.4 GHz to 22 GHz for both polarizations, whilst the scattered energy is redirected into several lobes to the benefit of bistatic RCSR. The measured results show that an almost 133.02% relative bandwidth for over –6dB RCSR is achieved nearly from 3.62 GHz to 18 GHz for both polarizations, which verifies the capability and potentiality of the proposed design for ultra-wideband RCSR
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callSimilar Papers
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
