CICESE Research Center, Electronics and Telecommunications Department, Carretera Ensenada-Tijuana No. 3918, Zona Playitas, Ensenada 22860, Mexico.
UAMRR-R, Universidad Autónoma de Tamaulipas, Carretera Reynosa-San Fernando, Reynosa 88779, Mexico.
Sensors (Basel). 2021 Oct 2;21(19):6592. doi: 10.3390/s21196592.
This paper illustrates the application of CORPS (coherently radiating periodic structures) for feeding 2-D phased arrays with a reduced number of phase shifter (PS) devices. Three design configurations using CORPS are proposed for 2-D phased arrays. The design model of phased array for these configurations considers the cophasal excitation required for this structure to set a strategic way for feeding the antenna elements and reducing the number of PS devices. Blocks of 2 × 3 and 4 × 7 CORPS networks depending on the configuration in the 2-D phased array are set strategically in the feeding network to generate the cophasal excitation required in the antenna elements. These design configurations used for feeding the antenna elements in the planar array geometry provide several advantages with respect to others in the scanning capability and the reduction of the number of PS devices of the array system. The full-wave simulation results for the proposed configurations in 2-D phased arrays provide a reduction in the number of PSs of until 69% for a scanning range of ±25° in elevation and ±40° in azimuth. The application of the raised cosine amplitude distribution could generate radiation patterns with a SLL_PEAK ≈ -19 dB and SLL_PEAK ≈ -23 dB for the design proposed configurations in all the scanning range.
本文说明了 CORPS（相干辐射周期结构）在使用较少相移器 (PS) 器件为二维相控阵馈电方面的应用。为二维相控阵提出了三种使用 CORPS 的设计配置。这些配置的相控阵设计模型考虑了为该结构设置同相激励所需的条件，从而为天线元件的馈电和减少 PS 器件的数量提供了一种策略。根据二维相控阵中的配置，在馈电网络中设置了 2×3 和 4×7 CORPS 网络块，以在天线元件中产生所需的同相激励。这些用于在平面阵列几何形状中馈电天线元件的设计配置在扫描能力和减少相控阵系统的 PS 器件数量方面具有其他配置所不具备的优势。在二维相控阵中提出的配置的全波模拟结果表明，在俯仰 ±25°和方位 ±40°的扫描范围内，PS 的数量减少了 69%。应用升余弦幅度分布可以在所有扫描范围内为所提出的设计配置生成 SLL_PEAK ≈ -19 dB 和 SLL_PEAK ≈ -23 dB 的辐射方向图。
