K-band 17.7-21.2 GHz 45W 1024-Element Receiver Subarray

ZD-PhAA-A1024R K-band 1024-element receiving subarray is a breakthrough design for high-band large-scale array systems with a frequency band of 17.7-21.2 GHz. The system integrates 1024 miniaturized array elements at a high density in a limited physical aperture (such as a 30 cm×30 cm planar array) through an innovative subarray division strategy. For example, the overall array is divided into 64 evenly distributed 16-element submodules. Each subarray uses a solid-state power amplifier (SSPA) and a low-noise amplifier (LNA) based on gallium nitride (GaN) technology to achieve signal amplification and primary beamforming, and uses an analog phase shifter to adjust the phase relationship between array elements to aggregate the signal into a single-channel output, thereby greatly compressing the 1024 independent RF chains required by the traditional all-digital architecture to 64, significantly reducing system power consumption.

The typical application scenarios of this technology cover multi-dimensional fields: the ultra-high spatial degree of freedom provided by its 1024 array elements supports the simultaneous generation of dozens of independent beams, realizing all-weather multi-angle tracking of low-observable targets; in 6G millimeter wave base stations, 64 subarrays can be flexibly divided into multiple virtual cells, penetrating building obstacles and serving high-density user terminals; and in high-throughput satellite communications, it can quickly switch to low-frequency backup subarrays in heavy rain weather or enhance signal strength through beam aggregation.

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