The paper describes the design and the numerical analysis of a new dielectric probe (DP) for non-invasive near field antenna measurements. The probe consists of a Lithium Niobate (LiNb03) substrate with a Mach-Zehnder (MZ) interferometer in push-pull (PP) configuration integrated in, and an optimized short dipole antenna printed on its surface. The strong electro-optic effect of LiNb03, in combination with the PP behaviour of the MZ interferometer, allows the amplitude modulation of an optical carrier by the external electric field incident on the probe. Moreover, the short dipole antenna guarantees effective selectivity towards the incident field polarization. The numerical analysis estimates a nearly flat frequency response in the band [1-10] GHz and a minimum detectable signal of a 8.8 mV/m √Hz .
A Photonic Probe for Antenna Measurements / Capozzoli, Amedeo; D'Elia, Giuseppe; M., Iodice; I., Rendina; Vinetti, Pietro. - STAMPA. - (2005), pp. 179-182. ( ICEAA 2005 Turin, Italy Sept. 12-16, 2005).
A Photonic Probe for Antenna Measurements
CAPOZZOLI, AMEDEO;D'ELIA, GIUSEPPE;VINETTI, PIETRO
2005
Abstract
The paper describes the design and the numerical analysis of a new dielectric probe (DP) for non-invasive near field antenna measurements. The probe consists of a Lithium Niobate (LiNb03) substrate with a Mach-Zehnder (MZ) interferometer in push-pull (PP) configuration integrated in, and an optimized short dipole antenna printed on its surface. The strong electro-optic effect of LiNb03, in combination with the PP behaviour of the MZ interferometer, allows the amplitude modulation of an optical carrier by the external electric field incident on the probe. Moreover, the short dipole antenna guarantees effective selectivity towards the incident field polarization. The numerical analysis estimates a nearly flat frequency response in the band [1-10] GHz and a minimum detectable signal of a 8.8 mV/m √Hz .I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
