Which of the following region is also known as reflective region in LPDA?(a) Inactive transmission line region(b) Active region(c) Inactive stop region(d) Log periodic arrayI had been asked this question in final exam.The doubt is from Frequency Independent Antenna in section Frequency Independent Antenna of Antennas

Which of the following region is also known as reflective region in LP

1.	Which of the following region is also known as reflective region in LPDA?(a) Inactive transmission line region(b) Active region(c) Inactive stop region(d) Log periodic arrayI had been asked this question in final exam.The doubt is from Frequency Independent Antenna in section Frequency Independent Antenna of Antennas
Answer» The correct CHOICE is (c) Inactive stop region To explain I WOULD say: Inactive stop region \(L > \frac{λ}{2} \)offers Inductive IMPEDANCE. Any small incident wave GETS reflected easily by large inductive impedance HENCE this region is also known as reflective region.

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