Featured Research

from universities, journals, and other organizations

Innovative SAW-less reconfigurable transceiver developed

Date:
February 24, 2011
Source:
Interuniversity Microelectronics Centre (IMEC)
Summary:
Researchers have developed a highly-linear reconfigurable transceiver, eliminating the need of surface acoustic wave (SAW) filters. The unique approach is a major breakthrough towards fully reconfigurable radios by relaxing the requirements of the antenna filters, which suffered today from limited flexibility due to the high filtering specs. The fully reconfigurable transceiver 'Scaldio' is compatible with multiple wireless standards including the fourth generation mobile broadband standard 3GPP-LTE.

Imec's SAW-less reconfigurable transceiver in 40nm CMOS.
Credit: IMEC

At the 2011 International Solid-State Circuit Conference (ISSCC2011), imec and Renesas Electronics Corporation (TSE: 6723) present a highly-linear reconfigurable transceiver, eliminating the need of surface acoustic wave (SAW) filters. The unique approach is a major breakthrough towards fully reconfigurable radios by relaxing the requirements of the antenna filters, which suffered today from limited flexibility due to the high filtering specs. The fully reconfigurable transceiver 'Scaldio' is compatible with multiple wireless standards including the fourth generation mobile broadband standard 3GPP-LTE.

The trend in wireless communication where terminals give their users ubiquitous access to a multitude of services drives the development of reconfigurable radios in deep-submicron CMOS. For emerging standards such as 3GPP-LTE, which use a broad range of operating frequencies and bandwidths, multi-mode capabilities of the radio are a must. Scaldio provides a solution to the handset manufacturers, which face the challenge of developing fully reconfigurable radios for a wide range of networks.

One of the major obstacles today in designing fully reconfigurable radios is making the antenna filters reconfigurable due to their stringent requirements. By making the Scaldio receiver highly linear, more out-of-band blocker interference can be allowed in the RF receiver, avoiding the need of SAW filters and consequently enabling a simplified antenna interface. With 3dB noise figure and capable of handling a 0dBm blocker at 20MHz offset, the receiver has the highest blocker resilience for low noise figures. The fully reconfigurable receiver also achieves the highest linearity (+10dBm IIP3, +70dBm IIP2), and frequency range reported up to now and handles blockers well in any mode.

The transmitter combines adaptive out-of-band noise filtering with voltage-sampling up-conversion to achieve RX band noise down to -162dBc/Hz allowing also here SAW-less operation. SAW-less transmitters become more and more important with the evolution towards future standards such as 3GPP-LTE where transmitters will need to operate in multiple FDD (frequency division duplex) bands.

The reconfigurable receiver and transmitter technology is suitable for mobile handsets and all kind of battery-powered wireless connectivity devices, as well as for base-stations for small cells, and can be programmed to meet the requirements for many standards and dedicated needs.

"We are pleased to have contributed to this major milestone of imec's research program on fully reconfigurable radios using state-of-the-art CMOS technology;" said Yoshinobu Nakagome, associate general manager of Mixed Signal Core Development Division Technology Development Unit at Renesas Electronics Corporation. "This accomplishment is an important step towards our integrated RF solution for next generation multimode wireless communication systems. Based on these impressive results, we extended our research partnership with imec for 3 years."


Story Source:

The above story is based on materials provided by Interuniversity Microelectronics Centre (IMEC). Note: Materials may be edited for content and length.


Cite This Page:

Interuniversity Microelectronics Centre (IMEC). "Innovative SAW-less reconfigurable transceiver developed." ScienceDaily. ScienceDaily, 24 February 2011. <www.sciencedaily.com/releases/2011/02/110224091741.htm>.
Interuniversity Microelectronics Centre (IMEC). (2011, February 24). Innovative SAW-less reconfigurable transceiver developed. ScienceDaily. Retrieved August 20, 2014 from www.sciencedaily.com/releases/2011/02/110224091741.htm
Interuniversity Microelectronics Centre (IMEC). "Innovative SAW-less reconfigurable transceiver developed." ScienceDaily. www.sciencedaily.com/releases/2011/02/110224091741.htm (accessed August 20, 2014).

Share This




More Matter & Energy News

Wednesday, August 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Awesome New Camouflage Sheet Was Inspired By Octopus Skin

Awesome New Camouflage Sheet Was Inspired By Octopus Skin

Newsy (Aug. 19, 2014) Scientists have developed a new device that mimics the way octopuses blend in with their surroundings to hide from dangerous predators. Video provided by Newsy
Powered by NewsLook.com
Researcher Testing on-Field Concussion Scanners

Researcher Testing on-Field Concussion Scanners

AP (Aug. 19, 2014) Four Texas high school football programs are trying out an experimental system designed to diagnose concussions on the field. The technology is in response to growing concern over head trauma in America's most watched sport. (Aug. 19) Video provided by AP
Powered by NewsLook.com
Green Power Blooms as Japan Unveils 'hydrangea Solar Cell'

Green Power Blooms as Japan Unveils 'hydrangea Solar Cell'

AFP (Aug. 19, 2014) A solar cell that resembles a flower is offering a new take on green energy in Japan, where one scientist is searching for renewables that look good. Duration: 01:29 Video provided by AFP
Powered by NewsLook.com
Tiny Satellites, Like The One Tossed From ISS, On The Rise

Tiny Satellites, Like The One Tossed From ISS, On The Rise

Newsy (Aug. 18, 2014) The Chasqui I, hand-delivered into orbit by a Russian cosmonaut, is one of hundreds of small satellites set to go up in the next few years. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins