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#11
December 8th 07, 09:20 PM
posted to rec.radio.amateur.antenna
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How to match 190 +j140 to a 50 ohm source?
On Sat, 8 Dec 2007 15:35:55 -0500, "AI4QJ" wrote:
"Richard Clark" wrote in message .. . On Sat, 8 Dec 2007 11:22:05 -0800 (PST), wrote: yep its an end of the semester project. BUT, we never learned anything about impedance matching, so I feel no shame in asking people like yourself. Thanks for your help. The shame is your course approaching the topic to the point of construction without introducing matching! Only the most trivial designs escape this necessity. Richard, this may be the intent of the instructor i.e. to have students learn this on their own. Hi Dan, Having been an RF instructor for a number of years, it is a shabby intent when it impedes the graded deliverable. Now, if this was in fact a beginning of the semester assignment; then, yes it would be a commendable side goal. However, with the statement of the total absence of matching coverage, it suggests a rather myopic view of antennas. In a course of 16 weeks, its introduction could hardly consume more than 5%. More could be discussed, certainly; but this minimum is hardly prohibitive. 73's Richard Clark, KB7QHC |
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