No AD9371 is not recommended for GSM.
Could you add more details about this?
Why is AD9371 not recommended for GSM whereas AD9364/61 can be used for it ?
Is this because of the minimum bandwidth of the rf filters of the AD9371 ?
AD9361 is also not recommended for GSM by ADI. This doesn't mean that customers are not using them, Many customers are using by taking care of requirements in different ways. We recommend you study and understand the limitations before deciding on using AD9361/AD9371 for narrow band systems.
Bandwidth limitation is one , but you can use custom filters in your baseband to overcome this.
Few pointers to look for are,
1. LO Phase noise.
2. LO leakage , Image , HD2 levels.
3. Tx out of band noise.
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