The isolation between two antennas

[rainer0523]

Hi guys,

Is there any way to enhance the isolation between two antennas that operate at the same frequency?

Please help me! thanks!:|

 

[throwaway18]

Directional antennas pointing in different directions.

Polarisation. One horizonal, one vertical.

If using vertical antennas put one underneith the other. What you do with the feeder if you have the rx/tx elsewhere is a problem of course.

Physical seperation. Put the antennas far away from each other, perhaps miles away from each other with the audio/data sent to where it is needed using a long cable, a telephone line or another radio system on a different frequency.

In some applications a circulator might be usfull.

 

[vfone]

https://scholar.lib.vt.edu/theses/available/etd-04262000-15330030/unrestricted/ch8.pdf

 

[Somkit]

Hi rainer0523

Isolation usefull application in mobile basestation antenna(directional antenna) (polarisation diversity technique), one antenna have two polarise,in commercial call cross polar antenna.
In mobile basestation application using two polarise at same time and freq thus a definition of Isolation are signal coupling between two polarise normally using -30 dB.

To many text book on antenna for molile application.

Regards.