A compact 47 GHz Band 2×16ch CMOS Phased Array Transceiver Chip with Bi-directional IF Phase Shifter and IQ Mixer

This paper presents a 4 × 4 vertical and horizontal polarized compact 47GHz fully integrated CMOS transceiver with bi-directional IF phase shifter, IQ mixer and Antenna in Package (AiP) technology. The proposed bi-directional IF phase shifter and IQ mixer realized less than 1.0° phase resolution with rms phase error of 0.447° and rms amplitude error of 0.063 dB, and the output third-order intercept point above +1.0 dBm with TX conversion gain more than 16.5 dB in the RF frequency ranges from 46-49 GHz. TX EVM of a transceiver chip under 5G NR modulation (100 MHz BW, 256-QAM OFDM) achieves less than -27.5 dB with a delivered output power of +7.5 dBm at 47 GHz. The AiP consists of a 4x4 array of 16 patch antennas and transceiver chip. The finalized AiP features 12.3 × 14.9 mm<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> in dimensions and the proposed transceiver chip is only 9.1 × 11.7 mm<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup>.