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- W1985271342 abstract "A quad-band GSM/GPRS/EDGE cellular system, implemented in 65-nm CMOS, is integrated in a multimedia SoC with BT and FM. A low-IF receiver with digital IRR tracking is selected for its smaller area and better noise figure. The receiver achieves a sensitivity of <formula formulatype=inline xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink><tex Notation=TeX>$-$</tex> </formula> 110 dBm, an IIP3 of <formula formulatype=inline xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink><tex Notation=TeX>$-$</tex> </formula> 9.5 dBm, and a calibrated image rejection ratio of 65 dBc, while consuming 61 mA. The polar transmitter architecture is chosen for its SAW-less TX capability, smaller area, and low current consumption. It achieves an ORFS (output radio frequency spectrum) of <formula formulatype=inline xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex Notation=TeX>$-$</tex></formula> 68 dB and <formula formulatype=inline xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex Notation=TeX>$-$</tex></formula> 64 dB at 400 kHz in GMSK and EDGE mode, respectively, while consuming 61 mA. The loop gain normalization, dc offset and AM/PM delay of the polar system are compensated to be better than 1% error, 1 mV, and 1.9 ns within 170 <formula formulatype=inline xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex Notation=TeX>$mu$</tex></formula> s, respectively. Several techniques are employed to minimize interference coupling within the SoC; these include frequency planning, circuit implementation, transceiver architecture optimization, and digital clock selection. The measured sensitivity and the output spectrum of the three wireless systems under full-feature phone operation are virtually unchanged." @default.
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- W1985271342 date "2013-05-01" @default.
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- W1985271342 title "A 65-nm GSM/GPRS/EDGE SoC With Integrated BT/FM" @default.
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- W1985271342 doi "https://doi.org/10.1109/jssc.2013.2253716" @default.
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