Design and Study of an mmWave Wearable Textile Based Compact Antenna for Healthcare Applications

Table 6

Radiating patch length “yr” changes.

Parameters	Free space, yr = 1.35 mm	yr = 1.3 mm	yr = 1.4 mm
Return loss magnitude at 60 GHz (dB)	−21.20	−20.09	−22.07
Bandwidth (GHz)	—	—	—
Gain (dBi)	6.74	6.77	6.70
Radiation efficiency (%)	93.30	93.02	93.56