Design of High-isolation Miniaturized Multi-channel Ku-band Driving Module

Abstract

The driving module is the key component of the electronic scanning array radar system, which controls the radio frequency signal of the whole radar. It must have the characteristics of high performance, low cost, lightweight, miniaturization and easy to use. To meet this requirement, a miniaturized multi-channel Ku-band driving module design scheme is proposed in this paper. The module integrates four-channel T/R amplifier circuits, two-channel calibration switch circuits, and a RF power division network, with a total of 19 radio frequency interfaces, which can significantly reduce the number of active amplifiers in the radar system. The module adopts a positive and negative double-sided open-cavity design, combines with vertical interconnection technology to achieve more than 80dBc channel isolation of calibration switch circuit, and has good gain flatness and inter-channel phase consistency. The overall size of the module is 107mm*84mm*12mm, the weight is only 202g, the transmit power of the odd channel is greater than 26.7dBm, and the transmit power of the even channel is greater than 28.4dBm. This module can be widely used in car navigation, radar detection, and other fields due to its characteristics of small size, rich function, and easy integration.