Pyramidal metamaterial-based absorbers for mode damping inside resonating structure

Passarelli, Andrea; Chikhi, N.; Masullo, M.R.; Andreone, A.

doi:10.1117/12.2565672

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the bandwidth and the absorption level can be tuned by adjusting the pyramid ramp (defined as the line slope between the lower and upper bases) 33 . Indeed, a steep (gentle) ramp translates in a small (large) difference between the upper and lower base dimensions which implies a narrower (wider) bandwidth.…”

Section: Resultsmentioning

confidence: 99%

Pyramidal metamaterial absorber for mode damping in microwave resonant structures

Chikhi

Passarelli

Andreone

et al. 2020

Sci Rep

Self Cite

View full text Add to dashboard Cite

In many resonant structures the damping of parasitic or higher order modes is indispensable to guarantee a correct and stable performance. This is particularly true in the microwave region in case of cavities or other resonant systems operating in accelerating structures, where the mitigation of spurious resonance effects is mandatory to achieve high quality particle beams. We present the results on the mode suppression in a real pillbox cavity by inserting a properly designed pyramidal metamaterial that acts as light, small volume damper for specific resonances in the range 3–4 GHz, only slightly perturbing other intrinsic modes. Measurements of the cavity response without and with the metamaterial absorber are presented and compared with full wave simulations. Field distribution for the pillbox intrinsic modes under scrutiny is also presented, showing that damping induced by the metamaterial critically depends on its relative position inside the cavity.

show abstract

Section: Resultsmentioning

confidence: 99%