Open Access60 GHz digitally controllable and sequentially rotated fed antenna array
Author(s) -
Kim H.,
Lee Y.,
Kim B.,
Baek K.,
Ko S.,
Yang T.,
Lee J.,
Nam S.
Publication year - 2017
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2016.4300
Subject(s) - broadband , bandwidth (computing) , antenna array , beamforming , radiation pattern , power dividers and directional couplers , materials science , optics , antenna (radio) , acoustics , electronic engineering , electrical engineering , engineering , telecommunications , physics
Sixteen‐chain sequentially rotated fed antenna array on low‐temperature cofired ceramic substrate is presented. A 60 GHz broadband circular polarised (CP) stacked rectangular patch antenna is implemented as an element. All the feedlines have the same length which is differentiated from conventional T‐junction divider feeder. By this way, several drawbacks of conventional sequential rotated array can be overcome such as phase error occurrence, amplitude mismatch, and axial ratio bandwidth degradation. Moreover, digitally controlled by phase shifters, beamforming performance can be evaluated. The simulated and measured S 11 shows broad bandwidth from 57 to 66 GHz. In addition, the radiation patterns show a peak gain of 17.2 dBi and a wide coverage of ±63°.