This article presents a 1024-element dual-polarized Ku-band (10.7-12.7 GHz) satellite communication (SATCOM) receive (RX) phased array. The array consists of four 16 ×16 subarray tiles, each of which comprises 64 eight-channel beamformer chips, 256 dual-channel low-noise amplifiers (LNAs), and 256 dual-polarized antennas built on an affordable printed circuit board (PCB). The antennas spaced at λ/2 spacing at 12.2 GHz in an equilateral triangular grid allow scanning up to x±70° in all planes while maintaining a cross-polarization level <;−30 <; -30 dB. The use of LNAs just after the antennas enables a low-noise operation with an antenna gain-to-noise temperature (G/T) of 10.5 dB/K ( Tant = 20 K) at broadside while maintaining a directivity of 34 dB at 11.7 GHz. Also, a two-pole/two-zero filter is placed between the LNA and the beamformer chip to greatly attenuate any transmit leakage signal at 14-14.5 GHz. The lightweight, low-cost PCB with all silicon chips and a thickness of 3.4 mm presents a viable candidate for Ku-band SATCOM ground and Satcom-On-The-Move (SOTM) terminals.

中文翻译：

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具有 >10-dB/KG/T 和嵌入式发射抑制滤波器的 1024 元件 Ku 波段卫星通信双极化接收器


本文介绍了一种 1024 元件双极化 Ku 波段 (10.7-12.7 GHz) 卫星通信 (SATCOM) 接收 (RX) 相控阵。该阵列由四个 16 × 16 子阵列块组成，每个子阵列块包含 64 个八通道波束形成器芯片、256 个双通道低噪声放大器 (LNA) 和 256 个双极化天线，构建在经济实惠的印刷电路板 (PCB) 上。等边三角形网格中的天线在 12.2 GHz 处以 λ/2 间隔排列，允许在所有平面上进行高达 x±70° 的扫描，同时保持交叉极化水平 <；−30 <； -30分贝。在天线后面使用 LNA 可实现低噪声运行，宽侧天线增益噪声比温度 (G/T) 为 10.5 dB/K (Tant = 20 K)，同时在 11.7 时保持 34 dB 的方向性GHz。此外，在 LNA 和波束形成器芯片之间放置了一个两极/两零滤波器，可大大衰减 14-14.5 GHz 的任何发射泄漏信号。这种轻质、低成本的 PCB 采用全硅芯片，厚度为 3.4 毫米，是 Ku 频段卫星通信地面和移动卫星通信 (SOTM) 终端的可行候选方案。