TY - JOUR
T1 - Design and Implementation of a Wideband Dual Polarized Plane Wave Generator with Tapered Feeding Non-Uniform Array
AU - Zhang, Yusheng
AU - Wang, Zhengpeng
AU - Sun, Xuelei
AU - Qiao, Zhaolong
AU - Fan, Wei
AU - Miao, Jungang
PY - 2020/11
Y1 - 2020/11
N2 - This letter presents a sub-6 GHz cost-effective wideband dual-polarized plane wave generator (PWG) design for the fifth-generation (5G) base station over-the-air test. The proposed nonuniform PWG design is composed of 256 elements and has a dimension of 1.7 m × 1.7 m. Several novel strategies are proposed and implemented to reduce the cost and complexity. To reduce the feeding network complexity and mutual coupling among PWG elements, a novel tapered amplitude-only excitation method (i.e., with the same relative phase excitations among all PWG elements) is proposed. To reduce the number of channels in the phase and amplitude control network, a four-element subarray is applied. Furthermore, the wideband PWG element design and nonuniform configuration are applied to support for ultrawideband operations from 2 to 5 GHz. The proposed PWG design is numerically simulated and experimentally validated. A cylindrical quiet zone of a diameter of 0.9 m and a depth of 0.9 m, with 2.1 m distance to the PWG, is achieved in the measurement for the considered bandwidth, with the typical peak-to-peak E-field amplitude and phase variations less than ±1.25 dB and ±7.5°, respectively, which demonstrated its effectiveness and robustness.
AB - This letter presents a sub-6 GHz cost-effective wideband dual-polarized plane wave generator (PWG) design for the fifth-generation (5G) base station over-the-air test. The proposed nonuniform PWG design is composed of 256 elements and has a dimension of 1.7 m × 1.7 m. Several novel strategies are proposed and implemented to reduce the cost and complexity. To reduce the feeding network complexity and mutual coupling among PWG elements, a novel tapered amplitude-only excitation method (i.e., with the same relative phase excitations among all PWG elements) is proposed. To reduce the number of channels in the phase and amplitude control network, a four-element subarray is applied. Furthermore, the wideband PWG element design and nonuniform configuration are applied to support for ultrawideband operations from 2 to 5 GHz. The proposed PWG design is numerically simulated and experimentally validated. A cylindrical quiet zone of a diameter of 0.9 m and a depth of 0.9 m, with 2.1 m distance to the PWG, is achieved in the measurement for the considered bandwidth, with the typical peak-to-peak E-field amplitude and phase variations less than ±1.25 dB and ±7.5°, respectively, which demonstrated its effectiveness and robustness.
KW - Over-the-air (OTA) test
KW - plane wave generator (PWG)
KW - sub-6 GHz base station (BS)
KW - wideband dual-polarized antenna
UR - http://www.scopus.com/inward/record.url?scp=85097331354&partnerID=8YFLogxK
U2 - 10.1109/LAWP.2020.3010118
DO - 10.1109/LAWP.2020.3010118
M3 - Journal article
SN - 1536-1225
VL - 19
SP - 1988
EP - 1992
JO - I E E E Antennas and Wireless Propagation Letters
JF - I E E E Antennas and Wireless Propagation Letters
IS - 11
M1 - 9143423
ER -