Ultra-Wide-Scanning Conformal Heterogeneous Phased Array Antenna Based on Deep Deterministic Policy Gradient Algorithm

This article investigates the pattern synthesis of the conformal phased array antenna (PAA) by using the deep deterministic policy gradient (DDPG) algorithm, and a nearly full solid angle for beam steering is realized. The beam steering capability of the planar and conformal PAAs is theoretically co...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation Vol. 70; no. 7; pp. 5066 - 5077
Main Authors: Zhang, Binchao, Jin, Cheng, Cao, Kaiqi, Lv, Qihao, Zhang, Pengyu, Li, Yan, Li, Maokun
Format: Journal Article
Language:English
Published: New York IEEE 01.07.2022
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Algorithms
Antenna arrays
Antenna radiation patterns
Antennas
Beam steering
conformal phased array antenna (PAA)
deep deterministic policy gradient (DDPG)
deep neural network (DNN)
deep reinforcement learning (DRL)
Directive antennas
Machine learning
Optimization
Phased arrays
Planar arrays
ISSN:0018-926X, 1558-2221
Online Access:Get full text
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Summary:This article investigates the pattern synthesis of the conformal phased array antenna (PAA) by using the deep deterministic policy gradient (DDPG) algorithm, and a nearly full solid angle for beam steering is realized. The beam steering capability of the planar and conformal PAAs is theoretically compared at first, and a conclusion is obtained that conformed to the conical-and-cylindrical structure can help to achieve ultrawide-angle beam steering. Next, a typical deep reinforcement learning algorithm, which is the DDPG algorithm, is utilized to deal with the fast beam steering problem of the conformal heterogeneous PAA. By virtue of the strong fitting ability of the DDPG algorithm for high-dimensional continuous nonlinear problems, the performance of fast beam steering is achieved within a wide-angle range within (−150°, 150°). Finally, a prototype of <inline-formula> <tex-math notation="LaTeX">1\times17 </tex-math></inline-formula> conformal PAA is fabricated for measurement and verification, and the measured results are in good agreement with the simulation results.
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ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2022.3150762