A Scalable 256-Element E-Band Phased-Array Transceiver for Broadband Communications

This paper presents an E-band communication link using a 256-element phased-array. The design is based on 8-element sub-arrays, using transmit/receive beamformer chips employing a 6-bit phase shifter fabricated in a SiGe BiCMOS process. Antennas were implemented on a 19-layer LTCC substrate. A 20 meter communication link was realized using a 5G NR, 400 MHz bandwidth, OFDM with 120 kHz sub-carrier spacing.