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MIMO-Analysis for WiMAX, WLAN and LTE

December 14, 2009 11:48 am | Comments

Making measurements involving MIMO applications requires adaptation of the algorithms used in the analysis software. By Johan Nilsson and Dr. Wolfgang Wendler, Rohde & Schwarz click to enlarge Figure 1. MIMO in WiMAX system. Due to ongoing growth in demand for channel capacity, more and more radio standards such as WiMAX, 3GPP HSPA, 3GPP LTE and WLAN are adopting MIMO technology.

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Integration and Power Management Open the Door for RKE Applications

December 14, 2009 11:48 am | Comments

ASSPs are meeting the challenges through the integration of mixed-signal technology and innovative power management schemes. Herve Branquart, Robert Waterman, ON Semiconductor click to enlarge Figure 1: Two way RKE block diagram Wireless transceiver technology is truly established in the automotive industry with Remote Keyless Entry (RKE) now a standard feature of even basic specification vehicles.

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Model-Based Design for Hybrid Electric Vehicle Systems

December 14, 2009 11:48 am | Comments

Hybrid Electric Vehicle (HEV) development requires collaboration and optimization across multiple engineering domains. By Saurabh Mahapatra, The MathWorks Figure 1: This simplified diagram of an HEV vehicle illustrates one possible arrangement of system elements.

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The Role of Wideband Transceiver Technology in Enabling LTE

December 14, 2009 11:47 am | Comments

An integrated single-chip RF transceiver provides the flexibility to address all aspects of the LTE standard. By Ebrahim Bushehri, Lime Microsystems click to enlarge Table 1: Comparison of data rate and channel bandwidth for wireless standards.

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How can Wi-Fi interoperate with WiMAX and LTE?

December 14, 2009 11:47 am | Comments

Welcome to Brainstorm! While Wi-Fi technology has proven to be largely successful in providing inexpensive wireless Internet service within close proximity to the Wi-Fi access point, WiMax technology could expand the potential of wireless penetration and connection quality. Ashish Sharma, VP Corporate Communications, Alvarion Wi-Fi technology has proven very successful for short range broadband connectivity for hotspots, residential homes and enterprises all around the globe, providing inexpensive wireless internet service within close proximity to the Wi-Fi access point through the use of license-exempt frequency bands.

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How does a reputable component supplier guard against counterfeit components?

December 14, 2009 11:47 am | Comments

Welcome to Brainstorm! The detection of counterfeit components has become increasingly difficult. The majority of parts have the same or similar markings as their qualified counterpart. In many cases, the identification of major manufacturers is applied despite manufacturers' efforts at product differentiation.

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High Temperature MLVs and Low Capacitance MLVs Improve Auto Designs and Reliability

December 14, 2009 11:47 am | Comments

With recent technical advancements, MLVs can now be used throughout the growing number of modules and interfaces in under hood automotive applications. By Ron Demcko, AVX click to enlarge Figure 1. Integration Capacitor Charge Calculations.

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Introduction to LTE Base Station RF Conformance Testing

December 14, 2009 11:47 am | Comments

By Moray Rumney and Hiroshi Yanagawa, Agilent Technologies, Inc. Operator acceptance testing is yet another step in the process and includes more user-centric tests. click to enlarge Table 1. Base station RF transmitter characteristics tests.

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The Old Way

October 28, 2009 8:11 am | Comments

Power Optimization Welcome to Brainstorm! To meet the challenge of increased power consumption in today's complex and integrated designs, a variety of techniques are available to be used in combination. What tools and techniques are available today that help designers to find the optimal power solution very early in the design process? By Vandana Lokeshwar, Technical Marketing Manager, Newark Environmentally driven design guidelines covering aspects such as power efficiency and standby consumption are coming into force in US, European and Asian markets, and have a major impact on power design in new products.

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Make the right choice early in the design cycle.

October 28, 2009 8:11 am | Comments

Welcome to Brainstorm! The antenna is a key component in an RF system and can have a major impact on performance. What are the most desirable antenna characteristics when used in a MIMO technology-based wireless device? By Monty Rohde, Product Management Director, Laird Technologies, Inc.

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The Hidden Challenge of MIMO Test

October 15, 2009 11:08 am | Comments

Today, engineers can combine modern RF signal analyzers with a basic understanding of digital downconversion to produce a tightly synchronized MIMO measurement solution. By David A. Hall, National Instruments click to enlarge Figure 1.

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Build Agility through Wireless Networks Designed Right

October 15, 2009 9:33 am | Comments

Designing a wireless data network without fully accounting for the mix of applications, the types of client devices and number of users risks reduced performance. By Dr. Roger Skidmore, Motorola click to enlarge Figure 1.

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Protecting Chinese 3G Base Stations

October 15, 2009 9:02 am | Comments

Judicious use of the appropriate protective circuits and devices in cellular base stations can greatly improve reliability and ensure required compliance with YD5098-2005. By Teddy To, China, Littelfuse Inc. click to enlarge Figure 1.

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WiMAX 101 The Evolution of WiMAX

October 14, 2009 9:18 am | Comments

With networks built around an infrastructure of base stations and subscriber stations like WiMAX, the size of the infrastructure and the number of deployments is a key consideration. John Schwartz, Digi International It is always interesting whenever a new standard is adopted or starts to gain some ubiquity in the marketplace.

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State-of-the-Art IC: Transmitter in Ultrasound Devices

October 14, 2009 9:18 am | Comments

Lower voltage IC technologies now enable ultrasound receiver chips with unprecedented high gain and low noise numbers. By Ismail Oguzman and Arash Loloee, Texas Instruments click to enlarge Figure 1. Typical block-diagram of a complete medical ultrasound system.

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