Is it possible to build an omnidirectional receiving antenna with
gain?

Let us assume an ideal dipole Call it 0dBd

Now let us build two ideal dipole antennas and combine their outputs
we have an antenna with possibly twice the received energy or 3dBd
gain.

Now for signals from certain orientations we signals canceling in
phase for less than 0dBd gain....



Is it possible to build an antenna with more capture area, giving
gain,
without adding directivity?


Thought experiment saying it is possible......
Cover a 1 meter sphere with solar cells......

Cover a 100 mete sphere with solar cells......
It's clear that the 100 meter sphere would gther more energy than the
1 m sphere.... thus it seams it would be possible,

No what forms would an isotropic (Or at lease hemispherical) pattern
antenna with gain 0 dBi look like?


Paul (Kl7JG)