Fig. 6
Transmitter (\({\text {T}}_{\text {x}}\)) antenna results. (a) Reflection coefficient (\({\text {S}}_{\text {22}}\)). (b) Transmission coefficient (\({\text {S}}_{\text {21}}\)) between \({\text {T}}_{\text {x}}\) and \({\text {R}}_{\text {x}}\).
