Antenna of Different Frequency

[pmat]

Hi,
i have none background w.r.t. antennas. I have a very simple question.
I have an antenna which is supposed to work at frequencies 5.4-5.85Ghz. I also have equipment
for communication between cars which ends at an SMA connector and i am
supposed to connect an antenna operating at frequencies 5.85-5.925GHz.
If i connect the 5.4-5.85GHz antenna at the SMA connector what will
happen?

Thnx,
pmat

 

[rotmanlens]

Hi Pmat

what happens,lot of things might happen.

it might work if the return loss of the antenna is close to-10dB at that frequency. but considering that filters and amplifiers behind the antenna structure either your frequencies will be filtered out

it might not work out at all

Regards
Rotmanlens.

 

[jiripolivka]

The "improper" antenna usually would not do any problem to the TX or RX; if it is not matched, it will not radiate so well as desired; also its radiation pattern may change.

If you have the equipment and antenna, try it. You can operate over a shorter range with such combination but I guess there will be no significant change in performance.

 

[eagle5]

Since the antenna is not very narrowband and covers from 5.4 to 5.85Ghz, I wouldn't expect dramatic degradations in return loss and pattern when moving to 5.85-5.925 GHz.
I think it is very likely that the antenna system will work.