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How green are these electronics manufacturers?

Greenpeace released its 14th edition of its Guide to Greener Electronics, a 10 to 1 scale (10 being the highest) ranking manufacturers of PCs, cell phones, TVs and game consoles according to their policies on recycling, climate change and toxic chemicals.   December 2009 results are shown below and results from the 13th edition are shown in parentheses.

  • Nokia – 7.3 (7.5)
  • Sony Ericsson – 6. 9 (6.5)
  • Toshiba – 5.3 (5.7)
  • Philips – 5.3 (5.9)
  • Apple – 5.1 (4.9)
  • LG Electronics – 5.1 (5.7)
  • Sony – 5.1 (5.1)
  • Motorola – 5.1 (5.3)
  • Samsung – 5.1 (6.9)
  • Panasonic – 4.9 (4.9)
  • HP – 4.7 (4.5)
  • Acer – 4.5 (4.5)
  • Sharp – 4.5  (5.1)
  • Dell – 3.9 (5.7)
  • Fujitsu – 3.5 (2.7)
  • Lenovo – 2.5 (3.5)
  • Microsoft – 2.4 (2.7)
  • Nintendo – 1.4 (1.4)

Readers may view the complete text for the Greenpeace Guide to Greener Electronics, here.

 

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Near and Far Field Measurements with a Vector Network Analyzer

For optimal performance in over-the-air RF systems, antennas must meet specific requirements. Performance parameters like size, wind-loading, environmental ruggedness, transmission pattern, bandwidth, and power handling capability should be considered. Methods of measuring the transmission (or reception) pattern that determines antenna gain with a VNA will be examined in this article.

 

 

 

 

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