Why there should be minimum separation between cell site receiving antenna?

Why there should be minimum separation between cell site receiving antenna?

It’s known that there has to be a separation between antennas of same frequency to minimize interference. Antennas operating at the same frequency shouldn’t be used as two independant systems – this is asking for trouble and you will likely get deep cancellation as signals “phase” in and out.

What is the distance from antenna to antenna?

As a general rule, the inside antenna and the outside antennas need 20 feet vertical OR 50 feet horizontal separation. If those distances are not feasible for your application, it can be achieved by doing a combination of the two (E.g, 10 feet vertical AND 30 feet horizontal).

Can I put two antennas next to each other?

Adding a second antenna can increase the signal path coverage and give you a more consistent signal. To accomplish this you will need a combiner or coupler that can combine the two antennas together. I would recommend that you use two identical antennas. This will ensure a balanced signal path and coverage.

Can TV antennas interfere with each other?

No it wouldn’t be multipath interference because a signal reflection from that close isn’t enough distance to have any real measurable delay since RF travels at the speed of light. Are both of these antennas pointing in the same direction? They make combo VHF/UHF units.

What is the minimum distance between two antennas?

Here is the rule: The horizontal distance between antennas should be greater than 1/4 of its wavelength (absolute minimum separation), but it should not be located at the exact multiples of its wavelength (maybe avoid the first 3-4 multiples).

When do you need a separation between antennas?

It’s known that there has to be a separation between antennas of same frequency to minimize interference. But this is really necessary when antennas are mostly in reception mode? Active surface of antenna goes beyond its physical dimension. At very close distance d < lambda/2 they can influence each other, even receiving only.

Why is there a separation between Yagi antennas?

But, think about a yagi antenna – it uses extra elements (that act like individual antennas) to form a tighter beam and benefit from “gain” i.e. more power is sent in one direction so, properly designed, it doesn’t have to be a problem. It’s known that there has to be a separation between antennas of same frequency to minimize interference.

What should the isolation be for a co-located antenna?

The lowest recommended antenna isolation for co-sited (co-located) antennas is 30 dB (Interferer port to victim port). This is valid for equipment on the same site, belonging to the same system as well as for all systems sharing the same site.