TY - JOUR
T1 - Analytical Approach to Microwave Orientations Based on a Strongly Coupled Array
AU - Wang, Hao
AU - Shen, Fazhong
AU - Qi, Xiaokang
AU - Zhang, Mei
AU - Wang, Jun
AU - Zhang, Bin
AU - Li, Changzhi
AU - Ran, Lixin
N1 - Publisher Copyright:
© 1963-2012 IEEE.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/9
Y1 - 2020/9
N2 - With the rapid progress of radio frequency (RF) and baseband integrated circuits, there are strong demands to minimize the dimension of array-based microwave systems, including orientation systems. However, miniaturizing array apertures will result in strong mutual coupling. To date, realizing microwave orientations in the presence of strong mutual coupling remains a technical challenge. In this article, we theoretically analyzed and experimentally demonstrated that this challenge can be overcome by deriving forward equations based on a hybrid equivalent circuit model and solving such equations by a backpropagation optimization. Different from conventional circuit equivalence, this hybrid equivalence integrates the modeling of incident fields, coupled array, and RF channels. Full-wave simulations and experiments based on a visualized UHF-band prototype verified the effectiveness. This approach can be further used in coupled array-based beamsteering, forming, and nulling applications.
AB - With the rapid progress of radio frequency (RF) and baseband integrated circuits, there are strong demands to minimize the dimension of array-based microwave systems, including orientation systems. However, miniaturizing array apertures will result in strong mutual coupling. To date, realizing microwave orientations in the presence of strong mutual coupling remains a technical challenge. In this article, we theoretically analyzed and experimentally demonstrated that this challenge can be overcome by deriving forward equations based on a hybrid equivalent circuit model and solving such equations by a backpropagation optimization. Different from conventional circuit equivalence, this hybrid equivalence integrates the modeling of incident fields, coupled array, and RF channels. Full-wave simulations and experiments based on a visualized UHF-band prototype verified the effectiveness. This approach can be further used in coupled array-based beamsteering, forming, and nulling applications.
KW - BP optimization
KW - coupled array
KW - equivalent circuit
KW - microwave orientation
KW - virtualization
UR - http://www.scopus.com/inward/record.url?scp=85091049710&partnerID=8YFLogxK
U2 - 10.1109/TMTT.2020.2992608
DO - 10.1109/TMTT.2020.2992608
M3 - Article
AN - SCOPUS:85091049710
VL - 68
SP - 3898
EP - 3907
JO - IEEE Transactions on Microwave Theory and Techniques
JF - IEEE Transactions on Microwave Theory and Techniques
SN - 0018-9480
IS - 9
M1 - 9093200
ER -