Loading...

A reconfigurable highly-linear CMOS transceiver core chip for X-band phased arrays

Meghdadi, M ; Sharif University of Technology | 2020

520 Viewed
  1. Type of Document: Article
  2. DOI: 10.1016/j.aeue.2019.152990
  3. Publisher: Elsevier GmbH , 2020
  4. Abstract:
  5. This paper presents a highly-linear transceiver core chip for X-band phased-array systems with two RX and one TX channels. Implemented in a standard 0.18-μm CMOS technology, the core chip provides 6-bit phase control (with rms error <2°) and 6-bit gain control (with rms error <0.6 dB) both within the 8.5–11.5 GHz frequency band. Improved accuracy is also available by digital calibration in narrowband applications. The receivers achieve a gain of 13.5 dB, an IIP3 of +10.3 dBm, and a noise figure of 8.2 dB, while drawing 170 mA per channel from the 3.3 V supply. The chip also provides an additional low-gain mode which further enhances IIP3 to +19.1 dBm and the input-referred P1dB to +11.4 dBm. The transmitter gain is about 17 dB with an output-referred P1dB of +12.4 dBm and 160 mA dc bias current. The power consumption of the chip is digitally adjustable to enable the power/performance trade-off necessary for use in different applications. © 2019
  6. Keywords:
  7. Attenuators ; Core chip ; Linearity ; Low-noise amplifiers (LNAs) ; Phase shifter ; Transceiver ; Antenna phased arrays ; Economic and social effects ; Gain control ; Noise figure ; Phase shifters ; Transceivers ; Waveguide attenuators ; CMOS transceivers ; Core chips ; DC-bias current ; Digital calibrations ; Linear transceiver ; Phased array systems ; Programmable gain amplifier ; CMOS integrated circuits
  8. Source: AEU-International Journal of Electronics and Communications ; Volume 114 , February , 2020
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S1434841119318746