We are using DFS to to deal with interference problem…but i have one query what is bandpass filter..how does it works…how to configure it ?? any idea
I heard that bandpass will help in lower the interference.
I have not seen any available for 2.4 / 5.8 frequencies, at those frequencies insertion loss could be high and trying to align for a bandwidth of say 100mhz would require lab equipment, every time you moved freq it would have to re-tuned,
Does bandpass filter really works in noisy area ?..
Can you define “noisy area” is it co-location interference or between AP and client’s or both, each is different and would require a different approach to reduce the interference, the bandpass filter mentioned has only 6dB attenuation out of band and is really a channelized band pass filter and not tunable (?), it’s only suitable for 5800 +/- 150Mhz
Yes, they work, but it must be a noisy area to be useful. They do not help with noise on the center (bandpass) frequency, only adjacent frequencies.
There is a significant insertion loss with the filters. A 4 pole is about 2db loss and the 8 pole is about 3 db loss.
BTW, on the 8 pole filter, out of band rejection is greater than 60db.
It never ceases to amaze on reading from the data info, insertion loss quoted @.5dB nominal (into a RF dummy load) and the real world usage which SurferTim states a insertion loss of 2-3dB = half of you EIRP being wasted on the TX also a equal reduction in sensitivity on the RX side,