Calibration techniques for digital phased arrays
Calibration techniques for digital phased arrays
复制标题
数字相控阵校准技术
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
W. Chappell
中科院分区：
文献类型：
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作者：
C. Fulton;W. Chappell
使用 16 元件、面板化、垂直偏振 S 波段子阵演示了用于校准和对准数字相控阵不同方面的多种技术，在发射和接收上均具有元件级数字化。这些技术利用元件级功能，不仅可以加快初始对准和校准的过程，而且可以增强阵列在射频/模拟系统发生变化时维持和强制执行校准的能力。演示了一种在全数字化阵列中随时间保持元件幅度和相位的方法以及正交失配的元件级自校准技术。
Several techniques for calibrating and aligning different aspects of a digital phased array are demonstrated using a 16-element, panelized, vertically-polarized S-band subarray with element-level digitization on both transmit and receive. These techniques make use of the element-level functionality not only to expedite the process of initial alignment and calibration but to enhance the ability of the array to maintain and enforce this calibration over time as RF/analog system variations occur. A method for maintaining element amplitude and phase over time in fully digitized arrays is demonstrated as well as a technique for element-level self-calibration of quadrature mismatches.