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

Volume

63

Issue

6

fYear

2015

fDate

6/1/2015 12:00:00 AM

Firstpage

2790

Lastpage

2796

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;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2015.2414475

Filename

7063928