Question

If length of the reflector, driven element, director islr, lde, ld, respectively then the order in the increasing order of their lengths is _____

(a) lr, lde, ld

(b) ld, lde, lr

(c) lde, lr, ld

(d) lr, lde, lde

I had been asked this question in a job interview.

Enquiry is from Construction of Yagi topic in section Folded Dipole & Yagi – Uda Antenna of Antennas

Answer 1

Correct option is (b) ld, lde, lr

Explanation: The lengths of reflector, driven element, director is in the orderlr > lde > ld.

So, the increasing order is ld, lde, lr .