In datasheet describe the VBW is only 35MHz which I think it will bring heavy memory efficiency with DPD co-working. But I find another test report which show this A2T09D400-23N' VBW is about 100MHz. The only thing I want to know is whether it is used for LTE 20MHz basestation system by tuning to asy Doherty structure.
A2V09H525-04, A2V09H400-04N devices are more suitable for 20 MHz LTE signals.
Have a great day,
Pavel
TIC
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IMD3 curves are provided in datasheet. They are consistent with 35MHz VBW as specified.
A2T09D400-23N is designed for Digital Predistortion Error Correction Systems. Without DPD, this device can't meet minimum ACPR requirement for LTE signals.
The output of DPD circuit expands input bandwidth of signal! DPD can expand input signal to power amplifier both in frequency and in PAR. Recommended VBW > 3-5x signal BW for best performance with DPD (You should contact manufacturer of DPD for exact requirments).
So, A2T09D400-23N is not suitable for 20MHz LTE bandwidth.
Have a great day,
Pavel
TIC
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Note: If this post answers your question, please click the Correct Answer button. Thank you!
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Actually I have made a challenged design with AFT09S310 on my LTE 20M project. 09S310 is also only about 45MHz VBW. But I think there should be some method to improve the VBW to 60MHz then meet the 3* BW experience advice. Let's see.
Actually I have made a challenged design with AFT09S310 on my LTE 20M project. 09S310 is also only about 45MHz VBW. But I think there should be some method to improve the VBW to 60MHz then meet the 3* BW experience advice. Let's see.