Title :
An X-band phased array microwave/photonic beamforming network
Author :
Banerjee, Sanjay K. ; Zimmer, G. ; Feldle, H.P. ; Marten, P. ; Schmidt, L.P.
Author_Institution :
Deutsche Aerospace, Ulm, Germany
Abstract :
An X-band microwave/photonic phased-array radar demonstrator is described. The critical components associated with the microwave/photonic beamforming network have been experimentally studied. Measured parameters of a DFB (distributed feedback) laser and an EDFA (erbium-doped fiber amplifier) for analog modulation are in good agreement with theory. Using a simplified analytical system model with incorporation of an EDFA, it is shown that for a system bandwidth of 100 MHz and a modulation index of 46% the maximum attainable SNR is approximately 40 dB.<>
Keywords :
antenna phased arrays; microwave antenna arrays; modulation; radar systems; 100 MHz; DFB laser; EDFA; Er/sup 3+/-doped fibre amplifier; SNR; X-band phased array; analog modulation; microwave/photonic beamforming network; modulation index; phased-array radar; Array signal processing; Distributed feedback devices; Erbium-doped fiber amplifier; Erbium-doped fiber lasers; Laser feedback; Laser modes; Laser radar; Laser theory; Microwave antenna arrays; Phased arrays;
Conference_Titel :
Microwave Symposium Digest, 1993., IEEE MTT-S International
Conference_Location :
Atlanta, GA, USA
Print_ISBN :
0-7803-1209-0
DOI :
10.1109/MWSYM.1993.276771
