Title :
Eight beam prototype fiber optic Rotman lens
Author :
Sparks, R.A. ; Slawsby, N. ; Prince, J. ; Munro, J.
Author_Institution :
ANRO Eng. Inc., Maynard, MA, USA
Abstract :
A prototype fiber optic Rotman lens was designed and fabricated using silica glass planar waveguide couplers, and precision lengths of single mode optical fiber. The form-factored photonic beamformer was integrated with a wideband linear antenna array to provide eight beam pointing directions corresponding to ±7.5°, ±22.5°, ±37.5°, and ±52.5°. Azimuthal antenna patterns were recorded for all beams at frequency increments of 500 MHz over the 2.0 to 4.0 GHz band to demonstrate squint free performance
Keywords :
antenna feeds; antenna radiation patterns; linear antenna arrays; microwave antenna arrays; microwave photonics; optical couplers; optical fibres; 2 to 4 GHz; azimuthal antenna patterns; eight beam prototype; fiber optic Rotman lens; form-factored photonic beamformer; passive feed network; silica glass planar waveguide couplers; single mode optical fiber; squint free performance; wideband linear antenna array; Broadband antennas; Glass; Lenses; Linear antenna arrays; Optical beams; Optical design; Optical fibers; Optical waveguides; Prototypes; Silicon compounds;
Conference_Titel :
Microwave Photonics, 1999. MWP '99. International Topical Meeting on
Conference_Location :
Melbourne, Vic.
Print_ISBN :
0-7803-5558-X
DOI :
10.1109/MWP.1999.819704
