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Abstract: A low-profile dual-polarization dual-beam scanning antenna array based on holographic control theory is presented in this paper. The radiating elements are ingeniously designed to achieve reconfigurable polarization and modulation of the radiation phase by controlling the state of the PIN diodes integrated on each element. A 72-channel series-parallel equal-amplitude and in-phase feeding network is integrated with the radiating array to achieve low-profile characteristics. The two-dimensional (2D) dynamic and accurate deflection of the beam is achieved by a designed direct current (DC) bias circuit that digitally encodes the antenna array using the single-chip microcontroller. A 2-element subarray and a 6×12 array have been fabricated and the digitally controllable radiation pattern of this antenna system has been experimentally verified. The antenna system can achieve the beam scanning of -30° to 30° with a step-scan of 5° at 11 GHz. The proposed antenna system is characterized by low profile, low cost, easy integration, and accurate beam steering, and holds broad application prospects in radar systems, smart antennas, and other fields.

一种低剖面双极化可编程双波束扫描天线阵列

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