Radiation efficiency measurement of a balanced miniature IFA-inspired circular antenna using a differential Wheeler cap setup

Francois Sarrazin (1) , Sylvain Pflaum (1) , Christophe Delaveaud (1)

1 CEA-LETI - Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information

This paper presents the radiation efficiency measurement of a novel balanced miniature IFA-inspired circularly folded antenna whose maximum dimension is at 433 MHz. The measurement is performed using a Wheeler cap (WCap) and a differential measurement setup using two feeding coaxial cables. Original narrowband WCap method is compared to the Ultra Wide Band (UWB) WCap approach. The accuracy of the measurement is discussed and additional simulations are performed to understand the overestimated results measured by the WCap method.

Mots clés: balanced antenna; electrically small antenna; IFA; radiation efficiency; Wheeler cap

Domaines: Electromagnétisme

Francois Sarrazin, Sylvain Pflaum, Christophe Delaveaud. Radiation efficiency measurement of a balanced miniature IFA-inspired circular antenna using a differential Wheeler cap setup. International Workshop on Antenna Technology (IWAT 2016), Feb 2016, Cocoa Beach, FL, United States. pp.64, ⟨10.1109/IWAT.2016.7434802⟩. ⟨hal-01393993⟩