# How can the gain of an antenna be negative?

Aaronia released this ultra-wide-range antenna, that can measure up to 35GHz. This was really impressive for only 3000 Euros, so I was considering purchasing it, when I figured I would look at the spec sheet to compare it with their previous model. And that's when I realized that, above ~23GHz, the antenna's gain is all negative!

Does this mean that when I point the antenna toward the source of the signal, then the reading would actually decrease?

• yes, I'd guess so – at higher frequency, the main lobe is probably just pointing somewhere else. Mar 16, 2019 at 10:22