Textile UWB Antenna with Metamaterial for Healthcare Monitoring

Table 1

CSRR optimization outcomes’ performance table.

S. no	Modification	Return loss	Operating frequency (GHz)
1	Without CSRR	−27 dB	3.21
2	Single inner ring	−33 dB	5.12
3	Single outer ring	−35 dB	6.21
4	CSRR left split	−42 dB	6.67
5	CSRR right spilt	−44 dB	7.78
6	With CSRR	−45 dB	9.78