About Levan

Levan · 2024-03-12

Hi all,I have a question regarding the SPIRIT1 RF transceiver. According to Section 9.1, it features Antenna diversity functionality, allowing the transceiver to monitor signal strength in antennas and utilize the best one available.My query is wheth...

Levan · 2024-02-28

Do I need to set the net impedances of differential pair from RFI_P and RFI_N to 50ohm?

Levan · 2024-02-13

I am attempting to compute an impedance matching network by following the guidelines outlined in the ST Application Note - AN5457.However, on page 24, the formula and calculations appear unclear to me due to the presence of a negative value under the...

Levan · 2024-02-07

Hello everyone,In the schematics en.MB1389-WL55JC-highband-E02_Schematic,there's a Pi filter following the RF switch before it links to the SMA connector for the antenna.Upon calculation, I found that the cutoff frequency of this low-pass pi filter i...

Levan · 2024-01-16

Greetings,Can I replace NX3L1T3157GM analog switches on en.MB1389-WL55JC-highband-E02_Schematic with FSA5157L6X ?Thanks in advance

Levan · 2024-01-16

Thank you Peter for your answer. Appreciate!

Levan · 2024-01-11

Thank you

Levan · 2023-11-21

Hi @Denise SANFILIPPO Is LPS28DFW also NextNav certified one?

Levan · 2023-11-21

In section 8.1- "NTC thermistor", on Fig 21, from TH pin to the ground there is NTC resistor. However, description of R9 resistor for Fig 25 says that its "NTC Tuning Parallel resistor".

Levan · 2023-11-10

Thank you for your feedback and guidance. If I substitute LiFePo4 with LiPo in this schematic, would it be fine? Regarding the dropout on LD39050 from 4.2V to 3.3V, should thermal vias be enough or i will need some heat sinks?Thanks

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