Microwave Engineering Europe - January/February 2009 - (Page 32)

32 PRODUCTS ISM-band power amplifier enables small system footprint for embedded WLAN SiGe Semiconductor has released the SE2568U ISM-band high-performance power ampliﬁer (PA) targeted at the embedded 2.4 GHz wireless LAN (WLAN) market. It integrates direct to battery operation and offers state of the art integration for embedded handheld and modular application. The PA claims to offer the industry’s smallest solution footprint for embedded WLAN functionality, delivering +18 dBm output power at 3 percent error vector magnitude (EVM), integrating a fullymatched PA, power detector, 3.2 GHz LO ﬁlter and harmonic ﬁlter in a tiny 2.0-mm x 2.0-mm x 0.5-mm QFN package. Speciﬁcally designed for use in portable embedded and modular integration applications, the SE2568U PA is a complete 802.11 b/g WLAN PA that features direct battery operation from +2.7 to +4.8 V, without the need for on-board voltage regulation. In addition, the new device is CMOS compatible, so it enables direct logic connections to the baseband function, 4G LTE eNodeB test signal generator for LTE user equipment RF and digital baseband testing CellMetric have launched a Long Term Evolution (LTE) eNodeB 4G base station test signal generator, designated Modus 6. The LTE test solution is compliant with Release 8 of the Third Generation Partnership Project standard (3GPP) and supports both Time Domain Duplex (TDD) and Frequency Domain Duplex (FDD) modes. This follows the 11th December 2008 functional freeze of LTE as part of 3GPP Release 8. The Modus 6 LTE base station test signal generator consists of one or more Modus 6 air interface units providing the RF transmission and LTE Composer, a PC based application which generates the protocol and RF transmission scenarios to emulate eNodeB base station transmissions. The LTE Composer application has been developed in close collaboration with Qasara Ltd, (www.qasara.com) a specialist LTE technology development company. The combination of the two tools provide a highly flexible, comprehensive and cost effective solution for LTE User Equipment (UE) and handset baseband and RF development and testing. The company’s LTE tester provides a sophisticated RF and protocol sequence generation environment in which LTE RF and baseband chipset companies and cellular handset developers can quickly test their solutions against a repeatable and deterministic test stimulus over the air. This capability includes RF channel emulation allowing the signal generator to generate a RF signal as seen either at the output of the base station transmit antennas or at the input of the user equipment’s receive antennas. Both transmit and receive Multiple-input Multipleoutput (MIMO) antenna configurations can be emulated by using two synchronised Modus 6 air interfaces. Modus 6 supports LTE RF channel bandwidths of 1.4, 3, 5 and 10 MHz in the band 824 MHz to 2155 MHz that is FDD bands I, II, III, IV, V, VI, VIII, IX and X and TDD bands a, b and c. The user has complete control over the Physical Downlink Control Channel (PDCCH) with respect to Downlink Control Information (DCI) format types and search space locations. www.mwee.com/212900676 eliminating the need for external switching circuitry. According to the company, current solutions require up to 15 external components for matching and ﬁltering to get equivalent performance. This signiﬁcantly reduces device and bill of materials and board assembly costs as well as the overall system footprint, all of which are paramount in embedded applications. Drawing just 120 mA while delivering +18 dBm output power at 3 percent EVM, this device offers state of the art integration for all applications where size and current consumption are at a premium, speciﬁcally in WLAN enabled cell phones and portable devices. www.mwee.com/212500866 Low power programmable MEMs oscillators extend battery life in portable and consumer electronics MEMS-based silicon timing solutions specialist, SiTime Corporation, has introduced a family of programmable oscillators that are designed to extend battery life in portable and consumer electronics by claiming to deliver the industry’s lowest power consumption and fastest start-up time. The devices are programmable — with frequencies, voltages and tolerances that can be conﬁgured easily — enabling shipment of customized samples in 24 hours and production quantities in two weeks. Additionally, the oscillator packages have standard footprints and can be used as drop-in replacements for quartz devices. The ﬁrst three solutions in this product family include: • SiT8003 - a low power programmable oscillator; ● • SiT8003XT - purported to be the thinnest programmable oscillator at 0.25 mm; • SiT8033 - a two-frequency, low power programmable oscillator. The oscillators feature low power consumption in active and standby modes, typically less than 3.5 mA and 10 µA, respectively, and offer a very fast start-up time of less than 3 ms. To enable custom applications, the devices can be programmed to operate at 1.8 V, 2.5 V, 2.8 V or 3.3 V, and at frequencies from 1 MHz to 110 MHz. The low power oscillators offer features that simplify system design and claim to be the most ﬂexible in the industry, allowing them to be used in a wide range of microprocessor, microcontroller and serial I/O applications. www.mwee.com/213000012 Microwave Engineering Europe ● January/February 2009 www.mwee.com http://www.qasara.com http://www.mwee.com/212500866 http://www.mwee.com/212900676 http://www.mwee.com/213000012 http://www.mwee.com

Table of Contents Feed for the Digital Edition of Microwave Engineering Europe - January/February 2009

Microwave Engineering Europe - January 2009 News Contents Comment Using KPIs to Ensure Quality in a Converging Network Amplifier Error Vector Magnitude Characterisation Using High-Speed Modular PXI Instruments GPS: Making a Play for Femtocells Accelerating Global WiMAX Adoption: The Move to Picocell and Femtocell Base Stations Addressing PA Efficiency for Multi-Mode Wideband Handset Applications Wi-Fi: Mobile Feature or Fundamental RAN? Products Calendar

Microwave Engineering Europe - January/February 2009

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