spid3rx
Member level 2
I have some dilemma on the antenna design parameters which I need some of the forumers expertise.
I design antennas that showed me
-reasonably good S11 but lower total radiation efficiency ~30%
-bad and out of band resonant S11 but much better total radiation efficiency ~40-50%
I suspect energy had been drain for the antenna with 30% efficiency. but is it normal for the second case which has a S11 of -3.9dB?
During design stage, should we always focus on making sure we get high radiation efficiency before checking and tweak the S11?
is equation below make sense?
Total radiation efficiency = (antenna efficiency) x (mismatch loss)
where can I study more on this?
million thanks
Spid3rx
I design antennas that showed me
-reasonably good S11 but lower total radiation efficiency ~30%
-bad and out of band resonant S11 but much better total radiation efficiency ~40-50%
I suspect energy had been drain for the antenna with 30% efficiency. but is it normal for the second case which has a S11 of -3.9dB?
During design stage, should we always focus on making sure we get high radiation efficiency before checking and tweak the S11?
is equation below make sense?
Total radiation efficiency = (antenna efficiency) x (mismatch loss)
where can I study more on this?
million thanks
Spid3rx