TY - GEN
T1 - Development of Omnidirectional CP Antennas and Arrays
T2 - 11th International Conference on Microwave and Millimeter Wave Technology, ICMMT 2019
AU - Lin, Wei
AU - Ziolkowski, Richard W.
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/5
Y1 - 2019/5
N2 - This paper summarizes the design concepts, operating principles, and application examples of advanced omnidirectional circularly polarized (OCP) antennas and arrays. The design of an OCP antenna with a figure eight-shaped pattern is introduced. It is realized by exciting two parallel-oriented electric and magnetic radiators with a 90° phase difference. The diameter of the loop current that generates the magnetic radiator is small, D approx {lambda}/10. As an applications example, a 28 GHz highly compact OCP antenna is reported for 5G Device-to-Device (D2D) communications. The design of an OCP antenna having a conical pattern is also discussed. The conical OCP pattern is realized when both the electric and magnetic radiators are placed above a ground plane. The diameter of the loop current is large, D approx 1 lambda. An example of a low profile and wideband OCP antenna radiating a conical pattern is demonstrated and its reconfigurable version is also discussed. Finally, an OCP array is presented that achieves high broadside directivity. It is based on an innovative method to realize collinear electric and magnetic radiators.
AB - This paper summarizes the design concepts, operating principles, and application examples of advanced omnidirectional circularly polarized (OCP) antennas and arrays. The design of an OCP antenna with a figure eight-shaped pattern is introduced. It is realized by exciting two parallel-oriented electric and magnetic radiators with a 90° phase difference. The diameter of the loop current that generates the magnetic radiator is small, D approx {lambda}/10. As an applications example, a 28 GHz highly compact OCP antenna is reported for 5G Device-to-Device (D2D) communications. The design of an OCP antenna having a conical pattern is also discussed. The conical OCP pattern is realized when both the electric and magnetic radiators are placed above a ground plane. The diameter of the loop current is large, D approx 1 lambda. An example of a low profile and wideband OCP antenna radiating a conical pattern is demonstrated and its reconfigurable version is also discussed. Finally, an OCP array is presented that achieves high broadside directivity. It is based on an innovative method to realize collinear electric and magnetic radiators.
KW - Antenna array
KW - circular polarization
KW - conical pattern
KW - high directivity
KW - monopolar patch
KW - omnidirectional
KW - reconfigurable
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U2 - 10.1109/ICMMT45702.2019.8992292
DO - 10.1109/ICMMT45702.2019.8992292
M3 - Conference contribution
AN - SCOPUS:85080071695
T3 - 2019 International Conference on Microwave and Millimeter Wave Technology, ICMMT 2019 - Proceedings
BT - 2019 International Conference on Microwave and Millimeter Wave Technology, ICMMT 2019 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 19 May 2019 through 22 May 2019
ER -