In this work, we propose an azimuthally-invariant periodic leaky-wave radiator for the generation of Bessel beams and X-waves by means of backward cylindrical leaky waves at millimeter wavelengths. A rigorous framework is first outlined to understand the theoretical constraints of such novel design. A specific attention is devoted to the impact of the attenuation constant on the focusing properties of the device. On this basis, a practical design is then proposed to meet the previous requirements. Numerical results confirm the interesting capabilities of the considered structure, paving the way for the first generation of focusing leaky waves.
Fuscaldo, W., Comite, D., Boesso, A., Baccarelli, P., Burghignoli, P., Galli, A. (2017). A new class of nondiffracting pulses based on focusing leaky waves. In European Microwave Week 2017: "A Prime Year for a Prime Event", EuMW 2017 - Conference Proceedings; 47th European Microwave Conference, EuMC 2017 (pp.963-966). Institute of Electrical and Electronics Engineers Inc. [10.23919/EuMC.2017.8231006].
A new class of nondiffracting pulses based on focusing leaky waves
Baccarelli, Paolo;
2017-01-01
Abstract
In this work, we propose an azimuthally-invariant periodic leaky-wave radiator for the generation of Bessel beams and X-waves by means of backward cylindrical leaky waves at millimeter wavelengths. A rigorous framework is first outlined to understand the theoretical constraints of such novel design. A specific attention is devoted to the impact of the attenuation constant on the focusing properties of the device. On this basis, a practical design is then proposed to meet the previous requirements. Numerical results confirm the interesting capabilities of the considered structure, paving the way for the first generation of focusing leaky waves.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
