[3] [3] CUI W J, LIU R P, WANG L, et al. Design of wideband implantable antenna for wireless capsule endoscope system[J]. IEEE Antennas and Wireless Propagation Letters, 2019,18(12):2706-2710.

[7] [7] ALQADAMI A S M,MOHAMMED B,BIALKOWSKI K S,et al. Fabrication and characterization of flexible polymer iron oxide composite substrate for the imaging antennas of wearable head imaging systems[J]. IEEE Antennas and Wireless Propagation Letters, 2018,17(8):1364-1368.

[8] [8] HE Y, LIU Y, YANG Y. Design of stretchable inverted-F antenna based on PDMS substrate[J]. Scientia Sinica Informationis, 2018,48(1):724-733.

[9] [9] SIMORANGKIR R B V B, YANG Y, ESSELLE K P, et al. A method to realize robust flexible electronically tunable antennas using polymer-embedded conductive fabric[J]. IEEE Transactions on Antennas and Propagation, 2018,66(1):50-58.

[10] [10] SIMORANGKIR R B V B, KIOURTI Esselle A K P. UWB wearable antenna with a full ground plane based on PDMS-embedded conductive fabric[J]. IEEE Antennas and Wireless Propagation Letters, 2018,17(3):493-496.

[13] [13] SIMORANGKIR R, KIOURTI A, ESSELLE K P. UWB wearable antenna with a full ground plane based on PDMS-embedded conductive fabric[J]. IEEE Antennas and Wireless Propagation Letters, 2018,17(3):493-496.

[14] [14] ZHOU Leitao,FANG Shaojun,JIA Xiao. Dual-band and dual-polarised circular patch textile antenna for on-/off-body WBAN applications[J]. Iet Microwaves Antennas & Propagation, 2020,14(7):643-648.

[15] [15] BEHERA Santanu Kumar,KARMAKAR Nemai Chandra. Wearable chipless radio-frequency identification tags for biomedical applications: a review[J]. IEEE Antennas and Propagation Magazine, 2020,62(3):94-104.