Wide CPW-Fed Multiband Wearable Monopole Antenna with Extended Grounds for GSM/WLAN/WiMAX Applications

Table 1

Permittivity () of skin, fat, and muscle.

Layer	Permittivity ()
	1780 MHz	2.40 GHz	3.46 GHz	5.26 GHz
Skin (dry)	38.90	38.06	37.04	35.56
Skin (wet)	43.88	42.92	41.53	39.30
Fat	5.35	5.28	5.17	5.00
Muscle	54.47	53.63	52.25	49.77