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A Quad-Band GSM/GPRS/EDGE SoC in 65 nm CMOS

A Quad-Band GSM/GPRS/EDGE SoC in 65 nm CMOS,10.1109/JSSC.2011.2109432,IEEE Journal of Solid-state Circuits,Hooman Darabi,Paul Chang,Henrik Jensen,Alir

A Quad-Band GSM/GPRS/EDGE SoC in 65 nm CMOS   (Citations: 4)
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Hooman Darabi, Paul Chang, Henrik Jensen, Alireza Zolfaghari, Paul Lettieri, John C. Leete, Behnam Mohammadi, Janice Chiu, Zhimin Zhou, M. Vadipour, C. Chen, Yuyu Changhttp://academic.research.microsoft.com/io.ashx?type=5&id=51178710&selfId1=0&selfId2=0&maxNumber=12&query=
Journal: IEEE Journal of Solid-state Circuits - IEEE J SOLID-STATE CIRCUITS , vol. 46, no. 4, pp. 870-882, 2011
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    • ...A digital pre-distortion provides an all-pass response for the nominal loop components, with the mismatch errors between pre-distortion and actual loop filter response left uncorrected [15]...
    • ...For that reason, the VCO gain and the loop filter components need to be calibrated [13], [15]...

    Hooman Darabiet al. Analysis and Design of Small-Signal Polar Transmitters for Cellular Ap...

    • ...In recent years, an increasing number of radios with CMOS implementation and high level of integration (e.g., single-chip phone) [2] have been introduced in the market...

    Chi-Yao Yuet al. A SAW-Less GSM/GPRS/EDGE Receiver Embedded in 65-nm SoC

    • ...The PA driver is a two-quadrant analog multiplier, whose output amplitude is controlled through bias current at constant supply voltage, as shown in Fig. 6(c) [25]...
    • ...Two methods are used to adapt the GSM loop transmitter to carry the EDGE waveform: digital pre-emphasis [25] and two-point injection [29]...
    • ...VCO is a differential Colpitts circuit [25] that free runs at about 4 GHz and is modulated within the loop...

    Michael Youssefet al. A Low-Power GSM/EDGE/WCDMA Polar Transmitter in 65-nm CMOS

    • ...To meet this challenging requirement without any external filtering, the GSM transmitters traditionally have been using translational loops [5], [7] or direct modulated PLLs [6], [8], [9], [36], which could be extended to a polar scheme in the case of EDGE [7]–[12], [36], [41]–[44] that supports 8PSK modulation (see Fig. 5). The advantage of these architectures is that the noise of the IQ modulator [39] (a substantial noise contributor) is ...
    • ...To meet this challenging requirement without any external filtering, the GSM transmitters traditionally have been using translational loops [5], [7] or direct modulated PLLs [6], [8], [9], [36], which could be extended to a polar scheme in the case of EDGE [7]–[12], [36], [41]–[44] that supports 8PSK modulation (see Fig. 5). The advantage of these architectures is that the noise of the IQ modulator [39] (a substantial noise contributor) is ...
    • ...floor corresponds to a blocker NF of 6.5 dB, which is adequately below the 15 dB target needed to meet 3GPP [36]...

    Hooman Darabiet al. Highly Integrated and Tunable RF Front Ends for Reconfigurable Multiba...

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