A multi unsymmetrical beam tapered slot -vagi antenna for PMMW imaging

Ya Chung Yu*, Chun Yen Huang, Li Yuan Chang, Chin Chung Nien, Jenn-Hawn Tarng

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A compact multi-unsymmetrical beam and high isolation antipodal linearly tapered slot-yagi antenna (TSYA) array with quarter-wave fan-rejections (QWFR) is proposed for feed antenna of lens in the near-field PMMW imaging applications. With changing QWFR structure, the different traveling current path provides the non-uniform phase field distribution for radiation aperture, which creates the function of multi unsymmetrical beamwidth to cover lens for each feed ALTSA at the focal plane, and these side lobe levels (SLL) of radiation patterns of ALTSA transformed by lens can be restrained to enhance the spatial resolution of the near-field imaging lens. Due to quarter-wave shorted circuit fan-rejections, they provide high isolation -30dB between ALTSA array for reducing pattern interference. The proposed ALTSA with QWFR covers 75-95GHz and 3 dB beamwidth is 70 degree for our lens of diameter of 20cm and focal length of 14cm.

Original languageEnglish
Title of host publication2010 IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2010 - Proceedings
Pages1216-1219
Number of pages4
DOIs
StatePublished - 1 Dec 2010
Event2010 IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2010 - Athens, Greece
Duration: 12 Dec 201015 Dec 2010

Publication series

Name2010 IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2010 - Proceedings

Conference

Conference2010 IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2010
CountryGreece
CityAthens
Period12/12/1015/12/10

Keywords

  • Fan rejection
  • LTSA
  • Multi-beam antenna

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