Quadrature bandpass ΔΣ modulation for digital radio

A quadrature bandpass modulator IC facilitates monolithic digital-radio-receiver design by allowing straightforward “complex A/D conversion” of an image-reject mixer’s I and Q outputs. Quadrature bandpass modulators provide superior performance over pairs of real bandpass modulators in the conversion of complex input signals, using complex filtering embedded in loops to efficiently realize asymmetric noise-shaped spectra. The fourth-order prototype IC, clocked at 10 MHz, converts narrowband 3.75-MHz I and Q inputs and attains a dynamic range of 67 dB in 200-kHz (GSM) bandwidth, increasing to 71 and 77 dB in 100and 30-kHz bandwidths, respectively. Maximum signal-to-noise plus distortion ratio (SNDR) in 200-kHz bandwidth is 62 dB. Power consumption is 130 mW at 5 V. Die size in a 0.8m CMOS process is 2.4 1.8 mm2.

[1]  Alan B. Grebene,et al.  Analog Integrated Circuit Design , 1978 .

[2]  I.A.W. Vance.  Fully integrated radio paging receiver , 1982 .

[3]  C.A. Laber,et al.  A family of differential NMOS analog circuits for a PCM codec filter chip , 1982, IEEE Journal of Solid-State Circuits.

[4]  M. Milkovic.  Current gain high-frequency CMOS operational amplifiers , 1985 .

[5]  A. S. Sedra.  Complex analog bandpass filters designed by linearly shifting real low-pass prototypes , 1985 .

[6]  A. Yukawa,et al.  A CMOS 8-Bit High-Speed A/D Converter IC , 1984, IEEE Journal of Solid-State Circuits.

[7]  R. Gregorian,et al.  A programmable gain/loss circuit , 1987 .

[8]  D. M. Haines,et al.  Direct conversion transceiver design for compact low-cost portable mobile radio terminals , 1989, IEEE 39th Vehicular Technology Conference.

[9]  Bruce A. Wooley,et al.  A 50-MHz multibit sigma-delta modulator for 12-b 2-MHz A/D conversion , 1991 .

[10]  Bruce A. Wooley,et al.  Second-order sigma-delta modulation for digital-audio signal acquisition , 1991 .

[11]  B. Tait,et al.  A Sub-Micron BiCMOS Technology for Telecommunications , 1991, ESSDERC '91: 21st European Solid State Device Research Conference.

[12]  John Francis Wilson,et al.  A single-chip VHF and UHF receiver for radio paging , 1991 .

[13]  Jose I. Alonso,et al.  A 0.7-3 GHz GaAs QPSK/QAM direct modulator , 1993 .

[14]  A. Boveda,et al.  A 0.7-3 GHz GaAs QPSK/QAM direct modulator , 1993, 1993 IEEE International Solid-State Circuits Conference Digest of Technical Papers.

[15]  Kenneth W. Martin,et al.  A Q-enhanced active-RLC bandpass filter , 1993, 1993 IEEE International Symposium on Circuits and Systems.

[16]  A. Wedel,et al.  An interpolative bandpass converter on a 1.2- mu m BiCMOS analog/digital array , 1993 .

[17]  S. Jantzi,et al.  A fourth-order bandpass sigma-delta modulator , 1993 .

[18]  Richard Schreier,et al.  An empirical study of high-order single-bit delta-sigma modulators , 1993 .

[19]  Yannis P. Tsividis,et al.  Design of active RLC integrated filters with application in the GHz range , 1994, Proceedings of IEEE International Symposium on Circuits and Systems - ISCAS '94.

[20]  M. Muraguchi,et al.  A 2 V 2 GHz Si-bipolar direct-conversion quadrature modulator , 1994, Proceedings of IEEE International Solid-State Circuits Conference - ISSCC '94.

[21]  C. Ouslis,et al.  Transfer function design for /spl Delta//spl Sigma/ converters , 1994, Proceedings of IEEE International Symposium on Circuits and Systems - ISCAS '94.

[22]  L. Longo,et al.  A cellular analog front end with a 98 dB IF receiver , 1994, Proceedings of IEEE International Solid-State Circuits Conference - ISSCC '94.

[23]  A. Abidi.  Direct-conversion radio transceivers for digital communications , 1995, Proceedings ISSCC '95 - International Solid-State Circuits Conference.

[24]  Robert G. Meyer,et al.  Future directions in silicon ICs for RF personal communications , 1995, Proceedings of the IEEE 1995 Custom Integrated Circuits Conference.

[25]  Ken Martin,et al.  BALLISTIC: an analog layout language , 1995, Proceedings of the IEEE 1995 Custom Integrated Circuits Conference.

[26]  Michiel Steyaert,et al.  A single-chip 900 MHz CMOS receiver front-end with a high performance low-IF topology , 1995, IEEE J. Solid State Circuits.

[27]  Jan Van der Spiegel,et al.  Performance of complex noise transfer functions in bandpass and multi band sigma delta systems , 1995, Proceedings of ISCAS'95 - International Symposium on Circuits and Systems.

[28]  William Martin Snelgrove,et al.  Switched-capacitor bandpass delta-sigma A/D modulation at 10.7 MHz , 1995, IEEE J. Solid State Circuits.

[29]  J.-E. Eklund,et al.  A multiple sampling, single A/D conversion technique for I/Q demodulation in CMOS , 1996, IEEE J. Solid State Circuits.

[30]  Victor da Fonte Dias.  Complex-signal sigma-delta modulators for quadrature bandpass A/D conversion , 1996 .

[31]  O. Norman.  A band-pass delta-sigma modulator for ultrasound imaging at 160 MHz clock rate , 1996 .

[32]  A. Hairapetian,et al.  An 81 MHz IF receiver in CMOS , 1996, 1996 IEEE International Solid-State Circuits Conference. Digest of TEchnical Papers, ISSCC.

[33]  A. Sedra,et al.  The effects of mismatch in complex bandpass /spl Delta//spl Sigma/ modulators , 1996, 1996 IEEE International Symposium on Circuits and Systems. Circuits and Systems Connecting the World. ISCAS 96.

[34]  S. Jantzi,et al.  A monolithic complex sigma-delta modulator for digital radio , 1996, 1996 IEEE-CAS Region 8 Workshop on Analog and Mixed IC Design. Proceedings.

[35]  S. Rezania,et al.  PowerDesign: A module generator for general-purpose amplifiers , 1996, 1996 IEEE International Symposium on Circuits and Systems. Circuits and Systems Connecting the World. ISCAS 96.

[36]  A. Teetzel,et al.  A stable 250 to 4000 MHz GaAs IQ modulator IC , 1997, 1997 IEEE International Solids-State Circuits Conference. Digest of Technical Papers.

[37]  R. Schreier,et al.  Delta-sigma data converters : theory, design, and simulation , 1997 .

[38]  Bruce A. Wooley,et al.  FP 13.3: A Two-Path Bandpass XA Modulator for Digital IF Extraction at 20MHz* , 1997 .

[39]  K. W. Martin,et al.  A Complex Bandpass ∆ Σ Converter for Digital Radio , 1997 .

[40]  S. Jantzi,et al.  A quadrature bandpass /spl Sigma//spl Delta/ modulator for digital radio , 1997, 1997 IEEE International Solids-State Circuits Conference. Digest of Technical Papers.