Cormac S. Conroy

A single-chip quad-band GSM/GPRS transceiver in 0.18 /spl mu/m standard CMOS

A 0.18 /spl mu/m CMOS single-chip fully integrated quad-band GSM/GPRS transceiver is presented. The low-IF receive section achieves -110dBm sensitivity at the antenna and -15dBm IIP3. The offset-frequency PLL transmitter achieves 1.2/spl deg/ rms phase noise, -65dBc modulation mask at 400kHz, and -165dBc/Hz noise at 20MHz. The chip occupies 17mm/sup 2/ and dissipates 95mA/112mA in receive/transmit mode.

A four-channel 3.125-Gb/s/ch CMOS serial-link transceiver with a mixed-mode adaptive equalizer

This work presents a quad-channel serial-link transceiver providing a maximum full duplex raw data rate of 12.5Gb/s for a single 10-Gbit eXtended Attachment Unit Interface (XAUI) in a standard 0.18-/spl mu/m CMOS technology. To achieve low bit-error rate (BER) and high-speed operation, a mixed-mode least-mean-square (LMS) adaptive equalizer and a low-jitter delay-immune clock data recovery (CDR) circuit are used. The transceiver achieves BER lower than <4.5/spl times/10/sup -15/ while its transmitted data and recovered clock have a low jitter of 46 and 64 ps in peak-to-peak, respectively. The chip consumes 178 mW per each channel at 3.125-Gb/s/ch full duplex (TX/RX simultaneous) data rate from 1.8-V power supply.

Single-chip RF CMOS UMTS/EGSM transceiver with integrated receive diversity and GPS

The large commercial success of multiband multimode 3rd-generation cellular products has driven single-chip integration, SAW-filter reduction and low power consumption. State-of-the-art solutions require quad-band EGSM combined with multiband WCDMA/HSPA receiver diversity and integrated GPS. Compact form factors make single-chip SAW-less solutions highly desirable. A Quad-Band GSM/EDGE-only transceiver was published in [1], and Triple-Band WCDMA-only transceiver solutions were published in [2–4]. This work describes the first multiband WCDMA/HSPA/EGPRS single-chip transceiver with GPS and receiver diversity. This device supports UMTS Bands 1,2,3,4,5,6,8,9,10 and GSM/EDGE 800, 900, 1800, 1900MHz Bands. It is implemented in cost-effective 0.18µm RF CMOS technology and uses a reduced number of TX and RX SAW filters.

A 5/sup th/-order continuous-time harmonic-rejection G/sub m/C filter with in-situ calibration for use in transmitter applications

A 0.18 /spl mu/m CMOS fifth-order harmonic-rejection G/sub m/C filter is presented for use in offset PLL transmitter applications. Using an in-situ calibration scheme with a tuning accuracy of 2% and a maximum calibration time of 90 /spl mu/s, this filter tunes from 52 to 151MHz and draws 7mA from a 1.8V supply while achieving an IIP3 of 7dBV with an output noise floor of 9.3 /spl mu/V in a 30kHz BW.

A quad-channel 3.125Gb/s/ch serial-link transceiver with mixed-mode adaptive equalizer in 0.18 /spl mu/m CMOS

This paper presents a quad-channel serial-link transceiver which provides 12.5 Gb/s full duplex raw data rate for a single 10 Gb XAUI interface. A mixed-mode LMS adaptive equalizer is adopted, which achieves 3 dB SNR improvement over pre-emphasis techniques. A delay-immune CDR circuit recovers the receive clock with 64 ps-pp jitter. The IC consumes 718 mW at 3.125 Gb/s/ch with full duplex data rate.

A multi-standard mobile digital video receiver in 0.18μm CMOS process

A multi standard direct conversion receiver for digital video broadcast application is presented. This receiver supports MediaFLOtrade, DVB-H and ISDB-T standards. Broadband multi-standard operation is achieved with a reconfigurable LNA, broadband mixer, programmable bandwidth baseband filter, wide tuning range LC VCO with a fully integrated fractional-N synthesizer. A high linearity signal path enables concurrent operation with GSM transmitter. Out of band transmitter (TX) blockers (DCS/IMT, Bluetooth) are attenuated by a novel integrated elliptic low pass filter. The receiver is implemented in 0.18 mum CMOS process. In MediaFLOtrade mode this design achieves a cascaded noise figure (NF) of 2.7 dB and IIP3 of -8.2 dBm in the highest gain mode. In DVB-H mode this design achieves a cascaded noise figure of 2.5 dB and IIP3 of -3.3 dBm in the highest gain mode. The peak power dissipation is 162 mW and 190 mW (@2.1 V) in MediaFLOtrade and DVB-H mode respectively.