Tyco Electronics' Digital Transmitter Technology (DTx) Extends Performance to Multiple Modes and
DTx Technology Demonstrates Excellent Efficiency, Bandwidth and Integration in Multi-mode and
Multi-band RF Transmitters for GPRS/EDGE, W-CDMA, CDMA 2000, HSPA as well as LTE, EVDO and WiMax Air
LOWELL, Mass. – August 2, 2007 – Tyco Electronics today announced
successful demonstration of its innovative multi-mode DTx technology, which provides a single
transmitter solution for GPRS, EDGE, CDMA2000 and UMTS. The DTx technology is an advanced radio
architecture that enables true multi-band, multi-mode operation from 2.5G to 4G with a single closed
loop digital polar design. Having demonstrated exceptional power efficiency in all the 2.5G and 3G
standards, the DTx technology provides an ability to extend the benefits of a polar architecture to
WiMax, LTE, EVDO and High-Speed Packet Access (HSPA) networks. Moreover, the DTx technology has been
the basis of numerous patent filings with 18 patents and multiple patent applications pending.
Based on novel circuit and signal processing techniques, DTx technology
includes a full transmitter subsystem with robust calibration and corrections algorithms. The
technology has demonstrated a number of significant technical breakthroughs at the circuit and
system level, including several key technical achievements:
Extremely Wide RF bandwidth: Proprietary RF power amplifiers have
demonstrated performance from 824MHz to 1910MHz in W-CDMA, CDMA2000, HSPA, WiMAX and LTE modes. The
DTx transmitter subsystem enables multiple UMTS bands, including band VII to be combined with quad
band GSM/EDGE with no significant cost or size penalties.
Extremely Wide modulation bandwidth saves money and provides uniform
radio architecture: To date polar solutions have been limited to GPRS and EDGE. More
traditional IQ designs are required for UMTS, WiMAX, EVDO and LTE. Conventional multimode radio
designs require two completely redundant transmitters which doubles size and cost. DTx technology
can enable modulation of signals with over 30MHz of bandwidth. This allows energy efficient polar
transmitters to scale beyond EDGE to W-CDMA, HSPA, EVDO, WiMAX and LTE.
Energy efficiency means more features and talk time: The DTx
transmitter subsystem provides power efficiency at peak transmit powers as well as superior current
consumption at lower transmit powers for all modes from EDGE to LTE. The DTx transmitter subsystem
has achieved impressive 40% power added efficiencies in EDGE mode. These benefits can now be
extended to even more demanding standards such as HSPA, EVDO, WiMAX and LTE. The energy savings
allow additional features or more talk time as well as reduced thermal stress and more compact and
flexible board utilization.
A novel Closed Loop Polar solution provides robust performance for both
data and voice devices. The DTx transmitter employs unique algorithms to calibrate device
non-linearity in real-time. As a result, performance over temperature, battery voltage, frequency
and transmit power is much more tightly controlled. This results in fewer dropped calls, longer
talk times and standby times as the adaptive DTx technology adjusts and optimizes performance in
real world conditions.
“The DTx technology platform that is now in demonstration brings
significant innovation to support true multi-mode capability, creating a preferred path to a common
radio architecture for the multiplicity of voice and data modes and bands,” said Finbarr McGrath,
director, DTx Technology, Tyco Electronics. “The DTx technology extends the benefits of closed loop
Polar Modulation from GPRS/EDGE through W-CDMA, HSPA, EVDO and beyond to LTE and WiMax. This will
allow for cost effective production of multimode radios as well as providing additional space and
reduced power consumption for the features that will be required in smarter mobile devices for today
and the future.”
ABOUT TYCO ELECTRONICS
Tyco Electronics Ltd. is a leading global provider of engineered
electronic components, network solutions and wireless systems, with 2006 sales of US$12.8 billion to
customers in more than 150 countries. We design, manufacture and market products for customers in
industries from automotive, appliances and aerospace and defense to telecommunications, computers
and consumer electronics. With over 8,000 engineers and worldwide manufacturing, sales and customer
service capabilities, Tyco Electronics' commitment is our customers' advantage. More information on
Tyco Electronics can be found at
The TE Logo and Tyco Electronics are trademarks.
Other products, logos, and company names mentioned herein may be trademarks
of their respective owners.
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