两级串并驱动有源相控阵T/R组件

Two-stage Serial-to-Parallel Drive Active Phased Array T/R Module

摘要:

从实际应用出发，介绍了一种有源相控阵发射/接收（T/R）组件的两级串并驱动设计方案。该设计方案中移相/衰减数据的控制包含两级串并驱动，第一级串并驱动将数据锁存后送给第二级串并驱动，第二级串并驱动再将数据锁存后用于控制组件通道收发待机和移相衰减。和传统的一级串并驱动控制方式相比，该控制方式可以有效降低T/R组件对串并驱动芯片的依赖程度，缩短T/R组件研制周期，降低研制成本。经测试验证，设计的两级串并驱动T/R组件具有较低的驻波系数、较高的移相精度，且各通道的增益平坦度及通道间的增益一致性均较好。

Abstract:

For practical application, a two-stage serial-to-parallel drives design scheme for active phased array transmitter/receiver (T/R) module was introduced. In the design scheme, the phase shift/attenuation data control consisted of two-stage serial-to-parallel drivers. First-stage serial-to-parallel driver latched the data to second-stage serial-to-parallel driver, which drove the transceiver channel switch and the phase shift/attenuation control. Compared with the traditional control method of one-stage serial-to-parallel drive, the proposed control method can reduce the dependence of T/R module on the serial-to-parallel driver chip, shorten the development cycle of T/R module, and reduce the development cost of T/R module. It has been verified that the designed two-stage series-to-parallel drive T/R module has low standing wave coefficient and high phase shift accuracy, and the gain flatness of each channel and the gain consistency between channels are good.