Re: [USRP-users] Configuring FIR filters for b210

[Marcus Müller via USRP-users]

Hi Victor,

the baseband filters are indeed real and thus symmetric in spectrum.

Best regards,
Marcus
On Fri, 2018-04-20 at 11:47 +0300, Victor Petrescu via USRP-users
wrote:
> Hi all.
> 
> I have a b210 device on which i want to make a transceiver. I managed
> to replicate 15Mhz bandwidth, but now i want to configure the FIR
> filters, to eliminate 10 Mhz from the bandwidth from RX and transmit
> only 5 Mhz on TX.
> 
> I tried to make a low pass filter, to configure the taps, using the
> scripts from filter_tool, but the thing is that the filter is applied
> to the right of the center frequency, but also to the left, it is
> just mirrored having the center frequency as reference.
> 
> I want to know if is there any possibility to elimitate the filter
> from the left size of the center frequency, or this is a result due
> to the existence of two FIR filters, each one applied to I and Q
> paramters. 
> 
> 
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[USRP-users] Configuring FIR filters for b210

[Victor Petrescu via USRP-users]

Hi all.

I have a b210 device on which i want to make a transceiver. I managed to
replicate 15Mhz bandwidth, but now i want to configure the FIR filters, to
eliminate 10 Mhz from the bandwidth from RX and transmit only 5 Mhz on TX.

I tried to make a low pass filter, to configure the taps, using the scripts
from filter_tool, but the thing is that the filter is applied to the right
of the center frequency, but also to the left, it is just mirrored having
the center frequency as reference.

I want to know if is there any possibility to elimitate the filter from the
left size of the center frequency, or this is a result due to the existence
of two FIR filters, each one applied to I and Q paramters.
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