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Electronics and Telecommunications Research Institute (한국전자통신연구원)
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An S-Band Multifunction Chip with a Simple Interface for Active Phased Array Base Station Antennas

  • Jeong, Jin-Cheol (Broadcasting & Telecommunications Media Research Laboratory, ETRI) ;
  • Shin, Donghwan (Broadcasting & Telecommunications Media Research Laboratory, ETRI) ;
  • Ju, Inkwon (Broadcasting & Telecommunications Media Research Laboratory, ETRI) ;
  • Yom, In-Bok (Broadcasting & Telecommunications Media Research Laboratory, ETRI)
  • Received : 2012.06.18
  • Accepted : 2012.11.12
  • Published : 2013.06.01
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Abstract

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-${\mu}m$ 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 $mm^2$ ($4mm{\times}4mm$), 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.

Keywords

References

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