Jan 12, 2003 #1 A aw Member level 3 Joined Jun 9, 2001 Messages 54 Helped 5 Reputation 10 Reaction score 3 Trophy points 1,288 Activity points 333 Hi everyone, I am looking for any articles/books/papers on the antenna testing etc : (I have the paper by Ludwig about cross-polarisation etc) Anything which explains stuff like aziumth over elevation etc plz pm or upload to download thx for your help in advance aw
Hi everyone, I am looking for any articles/books/papers on the antenna testing etc : (I have the paper by Ludwig about cross-polarisation etc) Anything which explains stuff like aziumth over elevation etc plz pm or upload to download thx for your help in advance aw
Jan 12, 2003 #2 yingyang Full Member level 2 Joined Dec 26, 2002 Messages 126 Helped 2 Reputation 4 Reaction score 2 Trophy points 1,298 Activity points 862 antenna polarisation You may refer to antenna theory by balanis or the book entitled: "antenna measurement" 8) 8) 8) 8)
antenna polarisation You may refer to antenna theory by balanis or the book entitled: "antenna measurement" 8) 8) 8) 8)
Jan 12, 2003 #3 S sick_man Guest circular polerisation of a cross yagi is done using a phasing harnes 2 1/4 wave patchers joined using a T piece then attached to each set of driven elements i do this make 2 1/4 wave patch lead by calculation using velosity factor of .96 then once they are in place using two swr meters an tx at center freq check the "balance" between each driven element then adjust the patch leads {radiators etc} for best in both this is circular polerisation and gives superiour results too cross polerisation the trick is too calculate all parts perfect then you wont need to adjust just check {using the same type of meter {maker} for both or youll get different results}
circular polerisation of a cross yagi is done using a phasing harnes 2 1/4 wave patchers joined using a T piece then attached to each set of driven elements i do this make 2 1/4 wave patch lead by calculation using velosity factor of .96 then once they are in place using two swr meters an tx at center freq check the "balance" between each driven element then adjust the patch leads {radiators etc} for best in both this is circular polerisation and gives superiour results too cross polerisation the trick is too calculate all parts perfect then you wont need to adjust just check {using the same type of meter {maker} for both or youll get different results}
Jan 12, 2003 #4 Hishamsaleh Full Member level 1 Joined Jan 6, 2003 Messages 98 Helped 1 Reputation 2 Reaction score 1 Trophy points 1,288 Activity points 969 test it theoreticaly by NEC... if you need this program plz send me amail to Hishamsaleh@hotmail.com... I can upload it on my site.
test it theoreticaly by NEC... if you need this program plz send me amail to Hishamsaleh@hotmail.com... I can upload it on my site.
Jan 13, 2003 #5 yingyang Full Member level 2 Joined Dec 26, 2002 Messages 126 Helped 2 Reputation 4 Reaction score 2 Trophy points 1,298 Activity points 862 polarisation You may like to read antenna handbook by lee.
Jan 13, 2003 #6 Hishamsaleh Full Member level 1 Joined Jan 6, 2003 Messages 98 Helped 1 Reputation 2 Reaction score 1 Trophy points 1,288 Activity points 969 wait me plz.. i'm busy repairing it!! hi.. i'm so sorry for not sending back... i did't finish uploading my site yet! verysoon you will find the link...
wait me plz.. i'm busy repairing it!! hi.. i'm so sorry for not sending back... i did't finish uploading my site yet! verysoon you will find the link...
Jan 13, 2003 #7 Hishamsaleh Full Member level 1 Joined Jan 6, 2003 Messages 98 Helped 1 Reputation 2 Reaction score 1 Trophy points 1,288 Activity points 969 NEC this is it... full version...
Jan 13, 2003 #8 Hishamsaleh Full Member level 1 Joined Jan 6, 2003 Messages 98 Helped 1 Reputation 2 Reaction score 1 Trophy points 1,288 Activity points 969 example if you run this software try this antenna example thanks to Dr. mohab mangoud...