MFC-Notch-Filters Microwave C-Band Waveguide Notch Filters
- Where operators are forced to sacrifice the lower portion of the super-extended C-band (3.4-4.2 GHz) by installing a narrower bandpass filter.
- While the bandpass filter removes the WIMAX, it also removes the remaining C-band (3.4-3.6 GHz or 3.4-3.7 GHz), limiting their operation to (3.6-4.2) GHz or (3.7-4.2) GHz.
- In many instances, the model 3966 notch filter will allow the user to recover much of the lower C-band, since it will notch (remove) only the undesired signals (carriers) from their C-band feed, while allowing all other frequencies through.
- This versatile notch filter can be configured to remove from (1-6) interfering carriers at notch depths from (15-70) dB, depending upon the signal strength of each interfering carrier.
The model 3966 notch filter is used to remove undesired (inband) carriers that disrupt C-band reception between (3.4-4.2) GHz.
An operator wants to receive (3.4-4.2) GHz, but there are (3) three interfering WIMAX carriers (in-band) identified as 3.41, 3.51 and 3.57 GHz with the strongest interference coming from the 3.57 GHz carrier. If the operator determines that 15 dB notch loss will adequately remove the 3.41 & 3.51 GHz carriers and more notch loss is required to remove the 3.57 GHz carrier (30 dB ?).
A good example of undesired carriers are WIMAX signals that operate between (3.4-3.8) GHz.