A low-cost quad-band single-chip GSM/GPRS radio in 90nm digital CMOS

In this paper we present a quad-band single-chip GSM/GPRS radio in 90nm digital CMOS process based on the Digital RF Processor (DRP™) technology. This chip integrates all functions from physical layer to the protocol stack and peripheral support in a single chip RF SoC. The transmitter uses a low-area small-signal digital polar architecture merging amplitude and phase information directly in an RF DAC. The receiver is based on direct RF sampling and discrete-time analog signal processing. A dedicated internal microprocessor manages the digital RF controls to provide best achievable RF performances. The transceiver exceeds all 3GPP specifications demonstrating a receive NF of 1.8 dB and a margin of 8dB on TX spectral mask at 400 KHz offset in GSM850/900 bands. The transceiver is best-in-class in area and occupies only 3.8 mm2 of silicon area.

[1]  O. Moreira-Tamayo,et al.  All-digital TX frequency synthesizer and discrete-time receiver for Bluetooth radio in 130-nm CMOS , 2004, IEEE Journal of Solid-State Circuits.

[2]  Giuseppe Li Puma,et al.  Integration of a SiP for GSM/EDGE in CMOS Technology , 2008, 2008 IEEE International Solid-State Circuits Conference - Digest of Technical Papers.

[3]  Khurram Muhammad,et al.  IIP2 Calibration by Injecting DC Offset at the Mixer in a Wireless Receiver , 2007, IEEE Transactions on Circuits and Systems II: Express Briefs.

[4]  Meng-Chang Lee,et al.  All-digital PLL and GSM/EDGE transmitter in 90nm CMOS , 2005, ISSCC. 2005 IEEE International Digest of Technical Papers. Solid-State Circuits Conference, 2005..

[5]  Khurram Muhammad,et al.  A 24mm2 Quad-Band Single-Chip GSM Radio with Transmitter Calibration in 90nm Digital CMOS , 2008, 2008 IEEE International Solid-State Circuits Conference - Digest of Technical Papers.

[6]  Khurram Muhammad,et al.  Software Assisted Digital RF Processor for Single-Chip GSM Radio in 90 nm CMOS , 2006, IEEE Custom Integrated Circuits Conference 2006.

[7]  R.B. Staszewski,et al.  The First Fully Integrated Quad-Band GSM/GPRS Receiver in a 90-nm Digital CMOS Process , 2006, IEEE Journal of Solid-State Circuits.

[8]  Khurram Muhammad,et al.  Digital RF processing: toward low-cost reconfigurable radios , 2005, IEEE Communications Magazine.