Product category:
Analogue and Mixed Signal ICs
News Release from: Analog Devices | Subject: Othello-E transceiver
Edited by the Electronicstalk Editorial
Team on 14 November 2005
Single-chip, quad-band Edge transceiver
Othello-E radio utilises closed-loop polar modulation to improve linearity and ease design complexity in EDGE handsets.
Analog Devices has unveiled its single-chip radio transceiver for the EDGE (Enhanced datarates for GSM Evolution) cellular standard Based on its award-winning direct conversion Othello radio architecture, the Othello-E transceiver integrates virtually all the necessary components, including voltage-controlled oscillators (VCOs), PLL loop filters and power management, for a complete quad-band EDGE radio design
This article was originally published on Electronicstalk on 14 Sep 2001 at 8.00am (UK)
Related stories
Fastest DSP for less than ten bucks
Analog Devices is sampling two new low-cost ADSP-219x models - the ADSP-2195 and ADSP-2196 - expanding the ADSP-21xx family of code compatible digital signal processors.
14bit A/D conversion at 105Msample/s
Analog Devices is claiming another industry breakthrough with the first 14bit ADC to run at 105Msample/s.
Additionally, because of its ultra-small packaging, the Othello-E transceiver is among the smallest EDGE transceivers available on the market today.
The device can operate in the 850, 900, 1800 and 1900MHz frequency bands, enabling worldwide coverage.
To achieve the increased linearity necessary for the signals that support EDGE datarates, Analog Devices Othello-E radio makes use of a high-performance logarithmic RF power detector to enable a closed-loop polar modulation transmitter design, which also contributes to better manufacturability and reduced design complexity.
Closed-loop polar modulation is an improvement over open-loop polar designs which require close matching of the transceiver and power amplifier.
The Othello-E radio complements Analog Devices' Blackfin SoftFone for EDGE baseband chipset, one of the most successful open-market EDGE baseband processors, which is currently featured in EDGE mobile devices from leading wireless device manufacturers.
"We have experienced great success with our SoftFone EDGE baseband processors over the past two years and we are excited to now offer our EDGE customers the benefits of our innovative Othello radio architecture in a single-chip solution", said Christian Kermarrec, Vice President, RF and wireless systems, Analog Devices.
"There is renewed interest for EDGE throughout the world as a low-cost upgrade to existing 2G networks, and as a reliable, high-speed fallback technology for cellular operators launching 3G networks".
According to data from the GSA (Global mobile Suppliers Association), 116 GSM/EDGE networks have launched commercial services in 70 countries.
The GSA also found that 169 operators in 91 countries have committed to EDGE deployments.
Illustrating the role of EDGE as a complementary technology to 3G networks, the GSA found that there are 55 operators deploying both EDGE and WCDMA, with 23 combined networks now in commercial service.
• Analog Devices: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
Search the Pro-Talk network of sites
