Good Morning
Has anyone had a good look into antenna selection for the CAT18 MBX?
I have been reading the Telit LM960 user manual and come across the following info;
• Primary RF antenna #0: Tx and Rx path for low bands and middle bands / 4x4 MIMO path of band41.
• Primary RF antenna #1: Tx and Rx path for high bands, ultra high bands and band32 / 4x4 MIMO path of band2(band25) and band4(band66)
• Secondary RF antenna #0: Secondary RF antenna #0: Rx Diversity path for low bands, middle bands / 4x4 MIMO path of band41 / GNSS path
• Secondary RF antenna #1: Secondary RF antenna #1: Rx Diversity path for high bands, ultra high bands and band32 / 4x4 MIMO path of band2(band25) and band4(band66)
The above with each band listed;
• Primary RF antenna #0: B1, B2(B25), B3, B4(B66), B5(B26,B18,B19), B8, B12(B17), B13, B14, B20, B28, B29, B39, B71, B41 for 4 x 4 MIMO
• Primary RF antenna #1: B7, B30, B32, B38, B40, B41, B42, B46, B48, B2(B25) for 4 x 4 MIMO, B4(B66) for 4 x 4 MIMO
• Secondary RF antenna #0: B1, B2(B25), B3, B4(B66), B5(B26,B18,B19), B8, B12(B17), B13, B14, B20, B28, B29, B39, B71, B41 for 4 x 4 MIMO / GNSS
• Secondary RF antenna #1: B7, B30, B32, B38, B40, B41, B42, B46, B48, B25(B2) for 4 x 4 MIMO, B66(B4) for 4 x 4 MIMO
I have been talking to an RF engineer who recommended using different antennas for the different frequencies. Has alone else looked into this?
It makes sense to use an antenna which is turned for each range.