Abstract
A microwave planar log-periodic dipole array (LPDA) antenna embroidered on textiles is presented for the first time. This antenna gives a 3.33:1 impedance bandwidth with 5 dBi average gain across the 0.9–3GHz band. This multi-layer textile antenna employs a new denim stack-up for repeatable measurements. The presented LPDA is tested under conformal conditions, with a demonstrated ability of frequency-dependent beam-steering through physical manipulation. Further, the antenna is considered for body-worn applications due to its conformal and low profile. A 2cm thick ground beef slab was used to emulate the human tissue for measurements. Overall, the presented LPDA brings forward new opportunities for several long-distance wideband and wearable applications.
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