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#7
February 4th 08, 11:49 PM
posted to rec.radio.amateur.antenna
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Wilkinson power splitter always necessary?
Roy Lewallen wrote:
I highly recommend reading the "Phased Array Techniqes" part of Chapter 8 of any edition of the _ARRL Antenna Book_ for about the past 15 or 20 years. It was first written not long after Dana Atchley popularized the use of the Wilkinson Divider for feeding phased arrays (and the error of which he later saw), so it contained quite a bit of detail about why that's a bad idea. When I re-wrote the section for the recent 21st Edition, I reduced the amount of material regarding the Wilkinson divider, since I thought it had finally faded away. I'm disappointed to hear that there's still a "school of thought" which regards it as a viable feed system after all these years. If you have the 21st Edition, you'll find the complete text of the earlier material on the included CD. It contains more detail about why the Wilkinson divider isn't appropriate for this application. Gee Roy, didja write the book on that one? ;-) -=- Smash |
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