X-band Phased Array Antenna Subarray

The antenna array consists of a 32×32 element grid. To effectively implement array aperture synthesis, the antenna panel and RF channels adopt a subarray synthesis architecture, where each subarray comprises 8×8 elements and features independent transmit/receive and calibration capabilities.

Main Functions:

1. Core Transmit/Receive Functionality: As a subarray for a 32×32 large-scale phased array, it operates in the X-band (9280 MHz–9520 MHz) and independently transmits and receives microwave signals with azimuthal linear polarization—serving as a fundamental building block for large active phased array systems.

2. Integrated Calibration Functionality: Each subarray integrates a calibration network with independent internal calibration capability, enabling real-time monitoring and correction of amplitude-phase errors to ensure high-precision beam pointing and superior beam performance for large arrays assembled from multiple such subarrays. 3. High-Gain Beamforming: Each 8×8-element subarray delivers ≥22 dBi gain and a narrow beamwidth <12° at broadside, providing critical hardware support for flexible, efficient beam scanning and aperture synthesis in upper-layer systems.