Frequency-Tunable Electromagnetic Absorber by Mechanically Controlling Substrate Thickness

Table 1

Comparison of the proposed mechanically frequency reconfigurable absorber with those of other papers.

Reference paper	Tuning method	Tuning frequency range (GHz)	BW (%)
[38]	Mechanically stretchable	11.15–11.56	3
[39]	Mechanically stretchable	640–680	8
[40]	Microelectromechanical system (MEMS)	1280–1320	3
[37]	Mechanically stretchable	10.4–11.0	5
Proposed work	Mechanically control the substrate thickness	8.0–8.9	10

, where and .