A multiband LTE SAW-less modulator with −160dBc/Hz RX-band noise in 40nm LP CMOS

@article{Giannini2011AML,
  title={A multiband LTE SAW-less modulator with −160dBc/Hz RX-band noise in 40nm LP CMOS},
  author={Vito Giannini and Mark Ingels and Tomohiro Sano and Bj{\"o}rn Debaillie and Jonathan Borremans and Jan Craninckx},
  journal={2011 IEEE International Solid-State Circuits Conference},
  year={2011},
  pages={374-376}
}
In FDD cellular standards, the transmitter's out of-band noise leaks into the receive band due to the finite duplexer TX to RX isolation. If this noise is not low enough, a SAW filter is needed before the Power Amplifier to preserve the RX sensitivity. Out-of-band noise is also an important concern for coexistence of cellular transmitters with standards like GPS, WLAN and/or WiMAX on the same smart phone, a very common scenario nowadays. The SAW-less RX-band noise challenge becomes even more… CONTINUE READING
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