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Wireless body area network (WBAN) incorporates a wireless sensor network and wearable devices in miniature size. In this paper, a dual-band microstrip patch (DBMSP) antenna as a sensor with a modified split ring resonator (SRR) and defective ground structure (DGS) is proposed for muscle mass measurement and prediction. Modified SRR on the ground plane forms a defected ground structure (DGS) for back radiation reduction and suits muscle mass measurement. The proposed dual-band microstrip patch antenna resonates at 5.2 GHz and 8.4 GHz, with impedance bandwidth of about 0.9 GHz and 1.89 GHz, input reflection coefficient is about -21.12 dB and -14.5 dB, respectively. This DBMSP antenna has an efficiency of 99.9%, with a negligible amount of specific absorption rate (SAR). From the proposed DBMSP antenna sensor, muscle mass is predicted from human muscle. The proposed antenna is fixed on the ventral surface of the forearm and biceps. DBMSP antenna sensor detects electromagnetic energy from muscle tissues under radiating near-field conditions. The muscle tissue signal is acquired through the proposed DBMSP antenna. The acquired antenna process with nondecimated wavelet transform (NDWT) and discrete wavelet transform (DWT) algorithms for noise reduction. Further, early prediction of muscle mass prevents humans from lack of protein and oxygen levels in the blood and avoids major issues in human health. The proposed DBMSP antenna-based muscle mass measurement achieves 89% accuracy when compared with laboratory measurement.

Wireless Body Area Network (WBAN) is the booming field incorporating the recent wireless sensor networks and miniaturized wearable devices. There are growing appeals for WBANs in medical and non-medical applications due to its flexibility and portability. This paper proposes an Ultra Wide Band (UWB)Microstrip patch antenna loaded with modified Split Ring Resonator (SRR) and Defective Ground Structure (DGS) for WBAN applications. The proposed antenna has a modified SRR structure and DGS at the ground and a patch scratched over the surface of the Arlon substrate with 1.6mm thickness. The structure is partially grounded and also loaded with meta-material to reduce the back-body radiations. The performance metrics of the proposed antenna are analysed and compared with different antenna configurations. The proposed UWB Microstrip patch antenna operating at 5.2GHz yielded a return loss of -21.12dB, VSWR of 1.19, higher efficiency and less Specific Absorption Rate (SAR) making it the best choice for biomedical applications.