Figure 1. The block diagram of the 28 GHz beamformer designed without frequency-converting components (IMAGE)
Caption
A 3-stage 8-to-1 Wilkinson power combiner combines the beams, which are then separated to respective outputs by a TD-MIMO switch. An H-tree network distributes the synchronization clock to each receiver element, with DTCs in the clock distribution network for precise timing calibration.
Credit
The 2024 IEEE Symposium on VLSI Technology & Circuits
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