Novel Low-Cost Integrated Multiband Antenna Design Customized for Smartwatch Applications with SAR Evaluation

Table 4

Human hand tissue characteristics [19].

Frequency (MHz)	2400		2600		5200		5800
Tissues	εr	σ (S/m)	εr	σ (S/m)	εr	σ (S/m)	εr	σ (S/m)
Skin	43.8	0.86	38.43	1.30	38.18	1.40	38.06	1.44
Fat	11.3	0.11	5.32	0.09	5.30	0.10	5.28	0.10
Muscle	55.9	0.97	54.04	1.57	53.77	1.70	53.64	1.77
Bone	20.8	0.34	15.28	0.50	15.10	0.56	15.01	0.59