On Tue, 9 Nov 2010 07:58:41 +0000, ashwanthh
wrote:

For my RF project, I want to measure vswr readings,

The first question is why ?

If you want to tune some HF antenna to resonance within a specific
ham band, just use a noise bridge and adjust the antenna dimensions
accordingly.

For VHF/UHF, the antenna dimensions are even more critical, i.e. the
antenna feedpoint impedance should be the same as the feedline
impedance. Due to the cable losses, any ATU at the lower end would be
completely unacceptable.