6.5–20-GHz Reconfigurable Phased-Array Receive Beamformer Utilizing Switchable Networks for 6G Applications

This article presents a 6.5–20-GHz reconfigurable phased-array receive (RX) beamformer channel in the GlobalFoundries (GF) 22-nm FD-SOI, consisting of a low-noise amplifier (LNA), a 5-bit phase shifter (PS), and a 5-bit variable gain amplifier (VGA). The reconfigurable channel has three different band configurations, utilizing amplifiers with various switchable networks and a switchable quadrature all-pass filter (QAF) for I/Q generation. The channel results in a measured gain of 19–24 dB, with 3-dB bandwidths (BW) of 6.5–9.5 GHz, 9.5–14.5 GHz, and 14–20 GHz for three different bands. A measured noise figure (NF) of 3.4–4.8 dB and an input 1-dB compression point (IP1dB) of −25 to −23 dBm are achieved for 6.5–20 GHz, with a gain tuning range of 17.5–18.5 dB and a DC power consumption of 75 mW. The measured rms phase and gain errors are, respectively,