STMicroelectronics Boosts 4G Connections and Battery Life With

STMicroelectronics Boosts 4G Connections and Battery Life With
Advanced Tunable Chips 
Maximized Handset Output Power and Smaller PC-Boards Come From
Dynamically Adjustable Integrated Antenna-Matching Capacitors 
GENEVA -- (Marketwire) -- 11/06/12 --  STMicroelectronics (NYSE:
STM), a global semiconductor leader serving customers across the
spectrum of electronics applications and a leading supplier of
semiconductors for cellular devices, is working to help avoid dropped
calls and increase battery life with a new range of highly
miniaturized adaptive devices that dynamically optimize handset
antenna performance. 
ST's new ParaScan(TM) Tunable Integrated Capacitors (STPTIC) are
electrically adjustable to maintain efficient transfer of energy from
the handset amplifier to the antenna under various operating
conditions. The STPTIC helps maximize radiated RF power for better
call performance, overcoming the challenges of use in multiple
frequency bands, when the handset is held close to the user's ear or
when it is moved away from the head, while minimizing amplifier power
consumption for longer battery life.  
Unlike alternatives that typically contain multiple switched
capacitors, the STPTIC allows capacitance to be adjusted smoothly,
without steps, for greater precision. The STPTIC is also smaller,
combining a single, variable capacitor with control circuitry using
ST's Integrated Passive and Active Device (IPAD(TM)) technology. 
"Our latest and most advanced STPTIC family now delivers an even more
compelling option for future 4G LTE handsets, which will demand high
wireless performance for reliable voice and high-speed data
communications with longer battery life," said Ricardo De-Sa-Earp,
Group VP and General Manager, Application-Specific Discretes & IPAD
Division. "Two of the world's top five handset manufacturers have
already chosen this technology for antenna matching in their current
handsets." 
The STPTIC family announced today use the latest and most advanced
generation of ParaScan Barium Strontium Titanate (BST)
variable-capacitor technology. These devices meet the demands of
wireless system designers by displaying high Q factor(1) at
frequencies up to 2.7 GHz, more than 3:1 capacitance change with
varying control voltage, and stable performance ove
r the specified
temperature range. Devices are easy to design-in, requiring only
minimal external components, and have high power capability meeting
the requirements of the GSM standard. 
Major features of the STPTIC family: 


 
--  Range of capacitance values: 2.7 to 8.2 pF
--  High power capability (+36 dBm)
--  High tuning range (3.5:1)
--  High linearity device (IP3 > 60dB)
--  High Quality factor (Q factor) up to 2.7 GHz
--  Low leakage current (Less than 100 nA)
--  Compatible with ST antenna tuning circuit (STHVDAC series)

  
The STPTIC devices in the 6-pin microDFN and flip-chip packages are
sampling now to lead customers direct from ST only, at prices
starting at $0.50 and $0.48 respectively for volumes in the range of
1,000 pieces. Alternative pricing options for higher quantities are
available on request. 
ParaScan(TM) is a trademark of PARATEK Microwave Inc. 
About STMicroelectronics
 ST is a global leader in the semiconductor
market serving customers across the spectrum of sense and power
technologies and multimedia convergence applications. From energy
management and savings to trust and data security, from healthcare
and wellness to smart consumer devices, in the home, car and office,
at work and at play, ST is found everywhere microelectronics make a
positive and innovative contribution to people's life. By getting
more from technology to get more from life, ST stands for
life.augmented. 
In 2011, the Company's net revenues were $9.73 billion. Further
information on ST can be found at www.st.com. 
(1)High Q factor indicates a lower rate of energy loss relative to
the energy stored in the capacitor. High-Q capacitors are needed for
efficient RF performance. Since both the stored energy and energy
lost vary with frequency, Q is also frequency dependent. The typical
Q of STPTIC capacitors is 65 at 900 MHz and 45 at 1800 MHz. 
STPTIC PR: http://hugin.info/152740/R/1655403/534895.pdf
 STPTIC
IMAGE: http://hugin.info/152740/R/1655403/534898.jpg  
For Press Information Contact:
STMicroelectronics
Michael Markowitz
Director Technical Media Relations
+1 781 591 0354
michael.markowitz@st.com