Closed HavingaThijs closed 2 years ago
This could be cuased by the different balun before the signal went into rf switch. The balun for high/low frequency is not the same, the balun at lower frequency have a better performance.
Thanks. Could you share us the frequency response (insertion loss) figure of the balun? Or is there a datasheet?
Sure, here are these datasheets BD3150L50100Aand TC1-1-13M+.
Note: TC1-1-13M+ is not the unit mounted on the antsdr PCB, but has similar performance.
Thanks for sharing the datasheets. It explains the observation.
I am using the ANTSDR E310 with openwifi. According to the system_top.v, it is configured for frequencies of 3-6GHz, but the Tx power I measure at 2.4GHz (WiFi channel 6) is even 3dB higher than at 5GHz (channel 44). Do you have an explanation for this?