EPN April 2012 - (Page 26)

rf&wireless Smart-Home Service Network open standards and wireless nodes create smart buildings Commercial Envelope Tracking Chip reduces wasted energy for handset power amplifiers s this the future of efficient use for heating and lighting and monitoring the environment? STMicroelectronics’ GreenNet wireless sensor networking technology is comprised of selfpowered nodes that can be positioned around a home for tasks such as temperature, carbon monoxide or movement sensing, relaying data wirelessly to a GreenNet dongle in a PC or set-top box. The data is communicated to a smartphone or tablet via a wireless router to enable monitoring and control. At the core of the network is the GreenNet node which combines a rechargeable battery and solar cell with an on-chip sensor and STM32L Cortex-M3 32bit wireless microcontroller in a compact 3D SIP that consumes minimal power and can operate autonomously powered only by ambient light energy. STMicroeLecTroNicS I ower supply modulators from Nujira reduce wasted energy from power amplifiers in mobile handsets, claims the company. The NCT-L1100 is first IC in the Coolteq.L family of envelope tracking power supply modulators for mobile handsets. Cutting wasted energy by over 50% to reduce heat dissipation and extend battery life for 3G and 4G smartphones to meet the higher data rates. Although the 4G LTE standard improves spectral efficiency for a higher data bandwidth, this is at the cost of energy efficiency and with an increase in the average RF power transmitted from the handset, and the need to support an increasing number of frequency bands in the phone to support global roaming. The IC demonstrates power conversion efficiencies in excess of 80% and supports the maximum 20MHz channel bandwidth of LTE. It is also compatible with multiple air interface standards, including TDD and FDD LTE. NujirA P www.epn-online.com/search?search_keyword=47249 www.epn-online.com/search?search_keyword=47434 Ease of Ordering RATED #1 Wideband DC I/Q Demodulator has IIP2, IIP3 optimisation and DC offset cancellation C Rated number one, Distributor Website Reputation - “Can easily order product” by North American electronic engineers in the UBM/EE Times 2011 Distributor Customer Preference Study (June 2011). Digi-Key is an authorized distributor for all supplier partners. New products added daily. © 2012 Digi-Key Corporation, 701 Brooks Ave. South, Thief River Falls, MN 56701, USA laimed to have “outstanding” linearity of IIP3 25.7dBm and IIP2 60dBm at 1.95GHz, the LTC5585 wide bandwidth DC I/Q demodulator is from Linear Technology. The device is capable of baseband output demodulation bandwidth of over 530MHz, which can support new generation wideband LTE multimode receivers’ and digital predistortion receivers’ bandwidth requirements. The demodulator operates over a wide range from 700MHz to 3GHz, covering virtually all cellular basestation frequency bands, says the company. The device is distinguished with two built-in calibration features. An advanced circuitry enables the system designer to optimise the receiver’s IIP2 performance, increasing from a nominal 60dBm to 80dBm or higher. The other is on-chip circuitry to null the DC offset voltages at the I and Q outputs. LiNeAr TechNoLogy www.epn-online.com/search?search_keyword= 47433 26 April 2012 – epn issue n° 04 http://www.epn-online.com/search?search_keyword=47249 http://www.epn-online.com/search?search_keyword=47434 http://digikey.com/europe http://www.epn-online.com/search?search_keyword=%2047433

Table of Contents for the Digital Edition of EPN April 2012

Cover
RS Components
Contents
Edito
Bergquist
Contents Web
LEMO
New Products
Traco electronic
Panasonic
Digikey
Digikey
International Rectifier
Cables & connectors
Hirose
Mouser
Adtech Ceramics
International Rectifier
RF & Wireless
Digikey
New Products
Teseq
Fischer Connectors
Analog Devices
Tech report
Automotive Electronics
Digikey
Smartgrid
Coilcraft
Sensor & Test
Renewable Energy
Digikey
40th anniversary interview
Industrial Automation
Digikey
New products
PCIM
Hannover
Test corner
Power perspective
Distribution spotlight

EPN April 2012

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