Wearable BLE Wireless Sensor Based on U-Shaped EBG Monopole Antenna

Figure 8

Radiation patterns of (a) the antenna before integrated and after integrated into heart rate and blood oxygen level BLE sensor in free space and (b) integrated antenna into heart rate and blood oxygen level BLE sensor on body before and after adjusting, (c) SAR of integrated antenna on BLE sensor.

(a)

(b)

(c)