Title :
Design of a Wideband Millimeter Wave Micromachined Rotman Lens
Author :
Jastram, Nathan ; Filipovic, Dejan S.
Author_Institution :
Dept. of Electr., Comput. & Energy Eng., Univ. of Colorado Boulder, Boulder, CO, USA
fDate :
6/1/2015 12:00:00 AM
Abstract :
Design, fabrication, and performance of a micromachined millimeter wave Rotman lens are presented. To achieve wide instantaneous bandwidth with ±30° scan range, five different transmission lines with carefully designed transitions are monolithically integrated within the same process. Theoretical bandwidth of over 70 GHz is verified with a narrower bandwidth W-band measurements of VSWR (<;2.75:1), and 65-115 GHz measurements of realized gain (5-11 dBi), 3 dB beamwidth (20°-40°), and beam-peak locations in E-plane. Demonstrated results indicate that wideband Rotman lenses can now be engineered for emerging millimeter and submillimeter wave applications.
Keywords :
millimetre wave propagation; transmission lines; E-plane; beam-peak locations; micromachined millimeter; narrower bandwidth W-band measurements; transmission lines; wide instantaneous bandwidth; wideband millimeter wave micromachined Rotman lens; Arrays; Bandwidth; Insertion loss; Lenses; Ports (Computers); Rectangular waveguides; Waveguide transitions; Array feeds; Rotman lens; array feeds; micromachining;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2015.2414475
