Alan0354
Full Member level 4

I don't understand the solution of this question at all. The top of the scanned document is the question. Below is the scanned copy of the solution manual.

I don't even know whereIin=I0sin[k(l2+|z|)] comes from.
Or does the question meant cutting the antenna to leave λ/8 from λ/4<z<λ/8 on the position side and λ/8 from -λ/4<z<-λ/8 on the negative side. Essentially making a λ/4 dipole by cutting the middle section out? If so, it should be Iin=I0sin[k(l2−|z|)]

I don't even know whereIin=I0sin[k(l2+|z|)] comes from.
Or does the question meant cutting the antenna to leave λ/8 from λ/4<z<λ/8 on the position side and λ/8 from -λ/4<z<-λ/8 on the negative side. Essentially making a λ/4 dipole by cutting the middle section out? If so, it should be Iin=I0sin[k(l2−|z|)]
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