摘要
A low voltage low power CMOS limiter and received signal strength indicator(RSSI) with an integrated automatic gain control(AGC) loop for a short-distance receiver are implemented in SMIC 0.13μm CMOS technology.The RSSI has a dynamic range of more than 60 dB and the RSSI linearity error is within i0.5 dB for an input power from -65 to -8 dBm.The RSSI output voltage is from 0.15 to 1 V and the slope of the curve is 14.17 mV/dB while consuming 1.5 mA(I and Q paths) from a 1.2 V supply.Auto LNA gain mode selection with a combined RSSI function is also presented.Furthermore,with the compensation circuit,the proposed RSSI shows good temperature-independent and good robustness against process variation characteristics.
A low voltage low power CMOS limiter and received signal strength indicator(RSSI) with an integrated automatic gain control(AGC) loop for a short-distance receiver are implemented in SMIC 0.13μm CMOS technology.The RSSI has a dynamic range of more than 60 dB and the RSSI linearity error is within i0.5 dB for an input power from -65 to -8 dBm.The RSSI output voltage is from 0.15 to 1 V and the slope of the curve is 14.17 mV/dB while consuming 1.5 mA(I and Q paths) from a 1.2 V supply.Auto LNA gain mode selection with a combined RSSI function is also presented.Furthermore,with the compensation circuit,the proposed RSSI shows good temperature-independent and good robustness against process variation characteristics.
基金
supported by the Doctoral Scientific Starting Research from the Xi'an Polytechnic University,China
the Doctoral Scientific Starting Research from the Xi'an Polytechnic University(No.BS1209)
