Open AccessAn S‐Band Multifunction Chip with a Simple Interface for Active Phased Array Base Station Antennas
Author(s) -
Jeong JinCheol,
Shin Donghwan,
Ju Inkwon,
Yom InBok
Publication year - 2013
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.13.0112.0400
Subject(s) - chip , amplifier , wideband , phased array , noise figure , electrical engineering , engineering , electronic engineering , low noise amplifier , antenna (radio) , cmos
An S‐band multifunction chip with a simple interface for an active phased array base station antenna for next‐generation mobile communications is designed and fabricated using commercial 0.5‐μm GaAs pHEMT technology. To reduce the cost of the module assembly and to reduce the number of chip interfaces for a compact transmit/receive module, a digital serial‐to‐parallel converter and an active bias circuit are integrated into the designed chip. The chip can be controlled and driven using only five interfaces. With 6‐bit phase shifting and 6‐bit attenuation, it provides a wideband performance employing a shunt‐feedback technique for amplifiers. With a compact size of 16 mm 2 (4 mm × 4 mm), the proposed chip exhibits a gain of 26 dB, a P1dB of 12 dBm, and a noise figure of 3.5 dB over a wide frequency range of 1.8 GHz to 3.2 GHz.