Title :
Reactive antenna matching when using integrated optical modulators
Author :
Grace, Michael P. ; VanBlaricum, Michael L. ; Larry, Thomas ; Stieber, Peter
Author_Institution :
Toyon Res. Corp., Goleta, CA, USA
Abstract :
The use of externally modulated fiber optic links for antenna remoting provides new opportunities for high performance, but requires no electrical power at the remote end. For those applications where wide instantaneous bandwidth is not essential, reactive matching can provide a very low link noise figure. At lower frequencies (typically <50O MHz), using reactive tuning elements in conjunction with a transformer can theoretically yield a noise figure below the 3 dB limit for passive systems. The externally modulated system in this case is not a truly passive system but can be thought of as an optically-driven RF amplifier
Keywords :
antenna theory; dipole antennas; equivalent circuits; impedance matching; military systems; optical links; optical modulation; 3 dB; 500 MHz; antenna matching; antenna remoting; externally modulated fiber optic links; front end circuit model; integrated optical modulators; noise figure; optically-driven RF amplifier; radar; reactive matching; reactive tuning; surveillance; weapon control; wide instantaneous bandwidth; Bandwidth; Frequency; Integrated optics; Noise figure; Optical fibers; Optical modulation; Optical noise; Optical tuning; Radiofrequency amplifiers; Stimulated emission;
Conference_Titel :
Aerospace Applications Conference, 1994. Proceedings., 1994 IEEE
Conference_Location :
Vail, CO
Print_ISBN :
0-7803-1831-5
DOI :
10.1109/AERO.1994.291186
