Substrate integrated waveguide-fed tapered slot antenna with smooth performance characteristics over an ultra-wide bandwidth

Download
  1. Get@NRC: Substrate integrated waveguide-fed tapered slot antenna with smooth performance characteristics over an ultra-wide bandwidth (Opens in a new window)
AuthorSearch for: ; Search for: ; Search for:
TypeArticle
Journal titleApplied Computational Electromagnetics Society Journal
ISSN1054-4887
Volume28
Issue5
Pages454462; # of pages: 9
SubjectCross-polarization level; Finite integration technique; Gain; Half power beam widths; Linear tapered slot antennas; Performance characteristics; Antipodal tapered slot antennas; Alumina; Antenna feeders; Design; Microwave circuits; Substrate integrated waveguides; Ultra-wideband
AbstractWe present an ultra-wide extended K-band (18 GHz - 30 GHz) planar linear tapered slot antenna (LTSA) design. From a parametric study involving eight designs, the best compromise LTSA is selected in terms of flattest gain and beam width and most symmetric beam width. The design is antipodal with alumina (ε = 10) substrate and fed with substrate integrated waveguide (SIW). Regular corrugations improve cross-polarization, input return loss, and gain. Numerical simulations use finite element analysis and time domain finite integration technique field solvers. The resulting design has half power beam widths (HPBW) of only ± 3.2° and ± 2.5° variation in frequency in the E- and H-planes, respectively. Cross-polarization levels at boresight are 35.7 dB at 18 GHz and 17.4 dB at 30 GHz, return loss is better than -11.7 dB and gain is 9.23 dB with ± 0.40 dB variation with frequency. Alternatively, for imaging systems requiring efficient illumination of a reflector or focusing elements, a second resulting design shows near-perfect beam symmetiy with HPBWE/HPBWH = 0.91. These two LTSAs are good candidates for dual-polarization focal plane array feed applications in astronomy imaging.
Publication date
Linkhttp://www.ece.uvic.ca/~jbornema/Journals/115-13aces-lbc.pdf
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); National Science Infrastructure
Peer reviewedYes
NPARC number21270526
Export citationExport as RIS
Report a correctionReport a correction
Record identifier08011102-dac8-4dfc-a799-59561146ede0
Record created2014-02-17
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)