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Content tagged with Industrial Control Designline posted in October 2002
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Compensation for Mixed-Signal Errors in 802.11a ZIF Receivers
News & Analysis  
10/31/2002   Post a comment
Cost pressures are forcing 802.11a WLAN designers to explore new receiver approaches in their system designs. This article compares the performance of superhet and ZIF receivers in 802.11a architectures.
Buffers minimize jitter in clock distribution, differential signal lines
News & Analysis  
10/30/2002   Post a comment
This article - an expanded version of a contribution on High Speed Design which appeared in EE Times' October 7th InFocus Signals section - discusses two different techniques for minimizing jitter: One uses buffering on clock distribution trees; the other uses buffers at each side of a differential signaling line. Cypress engineers explain.
Disciplined Power Management in Backplanes
News & Analysis  
10/30/2002   Post a comment
GTLP-Gunning Transceiver Logic Plus-requires specialized voltage levels, and produces a number of static and dynamic states. It is important to understand how various power supply configurations affect efficiency and parts count. It is possible to adjust the levels of these power supplies, but the designer must recognize the impact on device performance. Fairchild's Eddie Suckow analyzes some of the tradeoff decisions effecting backplane system performance.
Optimal Tools Needed for 3G FDD PHY Design
News & Analysis  
10/30/2002   Post a comment
To ease the 3G physical layer design process, system-level design tools must provide versatility, spec compliance, a good GUI, and more. Here's a look at why.
Pemstar's loss widens in quarter
News & Analysis  
10/29/2002   Post a comment
Digital multiphase pumps power for CPU cores
News & Analysis  
10/29/2002   Post a comment
While processor core voltages will drop to 1 V and below, current demand will rise, likely topping 150A by 2005, writes these power management engineers. New-generation PC power modules will need to process transients estimated to be 1000 A/ns at the processor, they say. The only way to do this is to stick fingers into the CPU, and anticipate what it needs - a technique they call "digital power." PA offers an early (albeit partial) exposure to what this entails.
PROXIM'S Harmony 802.11a WLAN Card: Burning Up The Airwaves
Teardown  
10/28/2002   Post a comment
As standards wars rage on in 802.11 wireless local-area networks, the Proxim Harmony 802.11a card shows the promise of a cost-effective wireless bandwidth adequate for video and data by cranking up wireless data rates to a theoretical 54 Mbits/second and beyond, although actual throughput is lower.
Agere's switch can hit 80Gbits/s
News & Analysis  
10/28/2002   Post a comment
Flood of serial entrants confounds designers
News & Analysis  
10/28/2002   Post a comment
About the time microprocessors were approaching gigahertz speeds, I/O was the systems performance bottleneck.
Architecture backs up all local I/Os
News & Analysis  
10/28/2002   Post a comment
In local interconnects, it is probable that no single technology dominates.
Advanced switching boosts PCI Express
News & Analysis  
10/28/2002   Post a comment
Data communications and telecommunications systems are converging, placing new requirements on the system building blocks that are at the heart of the communications infrastructure.
EMS companies set tough terms
News & Analysis  
10/25/2002   Post a comment
On a mission
News & Analysis  
10/24/2002   Post a comment
Twenty years ago, it was an innovation with unrealized potential and a handful of advocates. Today, DSP serves innumerable applications and exerts a gravitational field that has drawn hundreds of silicon IP and software developers into its orbit.
Exploration of the design space for integrated Bluetooth CMOS RFICs
News & Analysis  
10/24/2002   Post a comment
In order to give some perspective to the design problem for a Bluetooth receiver, it is useful to examine the performance required to meet two well-understood specifications: sensitivity and intermodulation level.
Broadband FH Wireless Radios Solve Last-Mile Gap
News & Analysis  
10/24/2002   Post a comment
Designers developing 2.4 GHz fixed broadband wireless radios must contend with interference from WLANs, microwave ovens, and more. By moving to a FH radio, designers can dodge this interference and provide high-speed Internet links.
Actel's revenues slip sequentially
News & Analysis  
10/23/2002   Post a comment
How HyperTransport and PCI Express complement each other
News & Analysis  
10/23/2002   Post a comment
The proliferation of new interconnect technologies has some designers scratching their heads, many believing that there are no significant differences among the alternatives, and that all compete for the same applications.
Challenges in HyperTransport Verification
News & Analysis  
10/22/2002   Post a comment
As HyperTransport designs proliferate the comm sector, verification will become a bigger issue for equipment and chip designers. Through a solid bus functional model, designers can tackle many of these verification headaches
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