60 GHz digitally controllable and sequentially rotated fed antenna array. Issue 13 (2nd June 2017)

• Record Type: Journal Article
• Authors: Kim, H.; Lee, Y.; Kim, B.; Baek, K.; Ko, S.; Yang, T.; Lee, J.; Nam, S.
• Is Part Of: Electronics letters. Volume 53:Issue 13(2017)
• Page Start: 821
• Page End: 822
• Publication Date: 2017-06-02
• Subjects: digital control -- antenna feeds -- ceramics -- microstrip antenna arrays -- phase shifters -- array signal processing -- antenna radiation patterns; digitally controllable antenna -- sixteen‐chain sequentially rotated fed antenna array -- low‐temperature cofired ceramic substrate -- broadband circular polarised stacked rectangular patch antenna -- T‐junction divider feeder -- phase error occurrence -- amplitude mismatch -- axial ratio bandwidth degradation -- phase shifters -- beamforming performance -- radiation patterns -- frequency 60 GHz -- bandwidth 57 GHz to 66 GHz; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2016.4300
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : 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°.