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Reflector antenna with very low sidelobe level - RF Cafe Forums

Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.


 Post subject: Reflector antenna with very low sidelobe level
Posted: Sun Jan 23, 2005 10:39 pm 
Antenna Diameter : 1.25 meter
Freq : 7.25~8.4 GHz
Efficiency : 60%
First Sidelobe level : -14 dBc
Sidelobe level : 32-25log(theta)
Type : (Cassegrain. Gregorian, ADE whatever)

It's very hard to satisfy that spec (SLL).
This Antenna is 30 lambda big, and our customer request 32-25log(rheta).
(It should be 52-10log(L/D)-25log(theta) by ITU Recommend Regulations though)
If anyone knows any product, please let me know...



Posted  11/12/2012

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