Title :
Array factor of a phased array antenna steered by a chirped fiber grating beamformer
Author :
Cruz, J.L. ; Ortega, B. ; Andrés, M.V. ; Gimeno, B. ; Capmany, J. ; Dong, L.
Author_Institution :
Dept. de Fisica Aplicada, Univ. de Valencia, Spain
Abstract :
In this letter, we present the array factor of a phased array antenna driven by a chirped fiber Bragg grating. The phase and the amplitude of a microwave modulating signal have been measured from the light reflected by the grating and the radiation pattern of an eight element antenna has been computed from the phase and amplitude distributions. The principal lobe radiated by the array can be steered without squint error between /spl plusmn/30/spl deg/ in the frequency range 2-6 GHz.
Keywords :
antenna phased arrays; chirp modulation; diffraction gratings; optical communication equipment; optical fibres; optical modulation; 2 to 6 GHz; amplitude distributions; array factor; chirped fiber Bragg grating; chirped fiber grating beamformer; eight element antenna; frequency range; microwave modulating signal amplitude; microwave modulating signal phase; phased array antenna; principal lobe; radiation pattern; squint error; Amplitude modulation; Antenna arrays; Antenna measurements; Chirp modulation; Gratings; Microwave measurements; Optical modulation; Phase measurement; Phase modulation; Phased arrays;
Journal_Title :
Photonics Technology Letters, IEEE
