Tropian® Articles & News

The following articles have been published on Tropian, Tropian's products or the Polar Impact™ approach to RF design:

• "Understanding polar modulation"
  Electronic Products Magazine
  By Earl McCune
  February 2006
• "Polar Modulation And Bipolar RF Power Devices"
  RF GlobalNet
  By Dr. Earl McCune, Jr.
  December 20, 2005
• "Direct polar modulation has the right stuff"
  CommsDesign
  By Dr. Earl McCune, Jr.
  November 7, 2005
• "WIRELESS: Edge transceiver takes Polar Impact"
  EETimes
  By Patrick Mannion
  August 29, 2005
• "Tropian re-emerges with multimode Edge transceiver IC"
  EETimes
  By Patrick Mannion
  August 22, 2005
• "Tropian Unveils Cell Chip"
  Red Herring
  By Ucilia Wang
  August 22, 2005
• "Tropian Chip to Enable Smaller Devices"
  RCR Wireless News
  By Mike Dano
  August 22, 2005
• "Tropian Launches Timestar TR15431N Multimode RF Transceiver For GSM, GPRS And EDGE Standards"
  Wireless Design Online
  August 22, 2005
• "Tropian® Launches Timestar™ TR15431N Multimode RF Transceiver; Supports GSM, GPRS and EDGE Standards in a Single Integrated Circuit"
  EDA Cafe.com
  August 22, 2005
• "Tropian Launches Timestar TR15431N Multimode RF Transceiver For GSM, GPRS And EDGE Standards"
  RF Globalnet.com
  August 22, 2005

Industry Articles & News

The following articles and news briefs contain additional information on 3G specifications and trends, polar modulation and wireless technology and their roles in handset design.

• Polar Technology Emerges
  Electronic Design
  November 2005
  Explains the principles behind polar modulation and why it is a great approach for multimode handset designs.
• Traffic Shift from Wired to Wireless Networks Likely to Accelerate
  ForceNine Consulting
  July 2005
  Describes a growing trend for consumers to use their wireless handsets instead of traditional wired devices- a move that may require increasingly feature-rich, multimode handset designs like those enabled by polar modulation technology.
• Blowing the Doors Off Performance: ABI Research Sees Transmit Diversity Coming to the Mobile Phone
  ABI Research
  June 2005
  Explores handset manufacturers' need for high-diversity devices that minimize the need for incremental components.
• EDGE Continues to Spread Throughout the Americas
  3GSM Americas
  March 2005
  Outlines the adoption rates of the EDGE standard and its growing integration into multimode phones.
• High-efficiency, Multi-mode, Multi-band Terminal Power Amplifiers
  IEEE Microwave Magazine
  March 2005
  Technical article providing information on the use of multimode PAs in cutting-edge handset design.
• Polar Modulation Ups Efficiency in Mobile PA Designs
  CommsDesign Magazine
  September 2003
  Explains how the use of polar modulation allows designers to build GSM power amplifiers that achieve efficiencies as high as 60 percent, thus reducing overall system power and increasing system uptime in mobiles.
• Polar modulation resolves multimode-mobile problems
  Wireless Web
  February 2003
  Combining GSM/GPRS transmitters with UMTS architectures is a complex and costly process. Explains how polar modulation will ease the development of multimode phones.