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Jamesanton said:hai try to design the connector with spacer like teflon......
sushisan said:Hi again:
I've accopled a horn to the wg and tryied to optimize playing with monopole long and position and this is the best that I could obtain. I've calculated the horn with the formulaes from C. A. Balanis - Antenna Theory - Analysis and Design - 2° Ed. (Wiley, 1997) and the attached very simple spreadsheet.
2 questions:
- What parameter can optimize for decrease S1,1?
- The radiation and total efficiency what express exactly? ie: in this example what value would have for a 100% of eficiency?
1) if you read C. A. Balanis - I think, that you can find the answer. Try change the dimensions in CST. Optimize horn without coax to waveguide transition.
2) in this case: efficiency is about S11. Return loss between horn (waveguide) and free space.