Why antenna gain is always in negative?

[brahma]

why antenna gain is always in negative???

 

[Sceadwian]

antenna gain??

Antenna gain is not always negative. There are many cases (Zagi's and microwave dishes for starters) where the antenna gain is positive.

 

[scoppulal]

Re: antenna gain??

It may depend on the reference used... I mean if your looking at a radiation pattern you could have normalization and then obtain a zero gain...
this could be another case...
Pay attention also to this things.

hope this helps. ciao

 

[electronics_kumar]

Re: antenna gain??

gain will be always a positive quantity.reciprocal of gain or negative polarity for gain gives a new parameter called as attenuation...hope it helps