Table 5.

Comparison of the proposed antenna with the existing literature.

Ref.	Separate Antennas	No. of Antenna Ports	Circular Polarization (in UWB Band)	Insensitive to Background Material	Robustness wrt Deformation	Energy Harvesting Arrangement
[3]	yes	2	no	no	N.A.	no
[7]	no	1	yes	no	N.A.	yes
[15]	no	2	no	no	N.A.	yes
[16]	yes	2	no	yes	N.A.	no
[17]	yes	2	no	no	N.A.	no
[18]	yes	2	yes	yes	N.A.	no
[19]	yes	2	yes	yes	N.A.	no
This work	no	1	yes	yes	yes	yes