TY - GEN
T1 - A 28GHz 32-element phased-array transceiver IC with concurrent dual polarized beams and 1.4 degree beam-steering resolution for 5G communication
AU - Sadhu, Bodhisatwa
AU - Tousi, Yahya
AU - Hallin, Joakim
AU - Sahl, Stefan
AU - Reynolds, Scott
AU - Renstrom, Orjan
AU - Sjogren, Kristoffer
AU - Haapalahti, Olov
AU - Mazor, Nadav
AU - Bokinge, Bo
AU - Weibull, Gustaf
AU - Bengtsson, Hakan
AU - Carlinger, Anders
AU - Westesson, Eric
AU - Thillberg, Jan Erik
AU - Rexberg, Leonard
AU - Yeck, Mark
AU - Gu, Xiaoxiong
AU - Friedman, Daniel
AU - Valdes-Garcia, Alberto
PY - 2017/3/2
Y1 - 2017/3/2
N2 - Next-generation mobile technology (5G) aims to provide an improved experience through higher data-rates, lower latency, and improved link robustness. Millimeter-wave phased arrays offer a path to support multiple users at high data-rates using high-bandwidth directional links between the base station and mobile devices. To realize this vision, a phased-array-based pico-cell must support a large number of precisely controlled beams, yet be compact and power efficient. These system goals have significant mm-wave radio interface implications, including scalability of the RFIC+antenna-array solution, increase in the number of concurrent beams by supporting dual polarization, precise beam steering, and high output power without sacrificing TX power efficiency. Packaged Si-based phased arrays [1-3] with nonconcurrent dual-polarized TX and RX operation [2,3], concurrent dual-polarized RX operation [3] and multi-IC scaling [3,4] have been demonstrated. However, support for concurrent dual-polarized operation in both RX and TX remains unaddressed, and high output power comes at the cost of power consumption, cooling complexity and increased size. The RFIC reported here addresses these challenges. It supports concurrent and independent dual-polarized operation in TX and RX modes, and is compatible with a volume-efficient, scaled, antenna-in-package array. A new TX/RX switch at the shared antenna interface enables high output power without sacrificing TX efficiency, and a t-line-based phase shifter achieves <1° RMS error and <5° phase steps for precise beam control.
AB - Next-generation mobile technology (5G) aims to provide an improved experience through higher data-rates, lower latency, and improved link robustness. Millimeter-wave phased arrays offer a path to support multiple users at high data-rates using high-bandwidth directional links between the base station and mobile devices. To realize this vision, a phased-array-based pico-cell must support a large number of precisely controlled beams, yet be compact and power efficient. These system goals have significant mm-wave radio interface implications, including scalability of the RFIC+antenna-array solution, increase in the number of concurrent beams by supporting dual polarization, precise beam steering, and high output power without sacrificing TX power efficiency. Packaged Si-based phased arrays [1-3] with nonconcurrent dual-polarized TX and RX operation [2,3], concurrent dual-polarized RX operation [3] and multi-IC scaling [3,4] have been demonstrated. However, support for concurrent dual-polarized operation in both RX and TX remains unaddressed, and high output power comes at the cost of power consumption, cooling complexity and increased size. The RFIC reported here addresses these challenges. It supports concurrent and independent dual-polarized operation in TX and RX modes, and is compatible with a volume-efficient, scaled, antenna-in-package array. A new TX/RX switch at the shared antenna interface enables high output power without sacrificing TX efficiency, and a t-line-based phase shifter achieves <1° RMS error and <5° phase steps for precise beam control.
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U2 - 10.1109/ISSCC.2017.7870294
DO - 10.1109/ISSCC.2017.7870294
M3 - Conference contribution
AN - SCOPUS:85016329386
T3 - Digest of Technical Papers - IEEE International Solid-State Circuits Conference
SP - 128
EP - 129
BT - 2017 IEEE International Solid-State Circuits Conference, ISSCC 2017
A2 - Fujino, Laura C.
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 64th IEEE International Solid-State Circuits Conference, ISSCC 2017
Y2 - 5 February 2017 through 9 February 2017
ER -