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Imec, Renesas unleash RF sol'ns in 28nm CMOS tech

Posted: 18 Jun 2013 ?? ?Print Version ?Bookmark and Share

Keywords:software-defined radio? CMOS? ADC? RF receiver?

Imec and Renesas Electronics Corp. have recently uncloaked what they boast as the world's first multi-standard RF receiver in 28nm CMOS technology, and a 28nm ADC targeting wide-bandwidth standards such as LTE-advanced and next-generation Wi-Fi.

Imec specialises in developing reconfigurable RF solutions, high-speed/low-power ADCs and new approaches to digitise future RF architectures and minimise antenna interface requirements, the company stated. It also combines innovative design with advanced chip technology (28nm and beyond) to develop small, low-cost, energy-efficient RF solutions with competitive performance, added the firm.

The 28nm receiver is a linear software-defined radio (SDR) operating from 400MHz up to 6GHz and supporting reconfigurable RF channel bandwidths up to 100MHz. Through novel design and architecture techniques, the receiver operates at a low standard supply of 0.9V, while maintaining 5dBm of out-of-band IIP3 and tolerating 0dBm blockers. It achieves noise figures down to 1.8dB, occupies an active area of 0.6mm2 and consumes less than 40mW.

The ADC is a 410MS/s dynamic 11bit pipelined SAR ADC in 28nm CMOS. It achieves a peak signal-to-noise distortion ratio (SNDR) of 59.8dB at 410MS/s with a power consumption of 2mW. By combining novel digital calibration techniques with a new ADC architecture, an excellent energy efficiency was achieved. The ADC, including an on-chip calibration engine, occupies an active area of 0.11mm2.

"High-volume consumer devices require advanced chip technology that is cost-effective," stated Joris Van Driessche, programme manager of reconfigurable radios at Imec. "Along with our partner, Renesas, we are thrilled to continue to offer innovative solutions to the market. Our 28nm wireless receiver brings the electronics industry closer to the development and adoption of next-generation wireless devices."

"High level integration and low power are strongly required for recent wireless transceivers. There is every possibility of creating epoch-making architecture for RF and analogue cores by using fine CMOS technology," said Hisayasu Sato, senior manager of 2nd analogue core development department, core technology business division, 1st solution business unit, Renesas. "Through the collaboration with Imec, we have been developing cutting-edge technologies. We continue to supply competitive IP cores and solutions to our customers."





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