Re: [Discuss-gnuradio] using USRP to get scattering parameters

[Yan Huang]

Hi Marcus,

I'm sorry, I want to Say using two same kind of antennas as TX and RX 
respectively in one B210 board. And how can I get the S-parameters?

Thank you,
Yan

-----Original Message-----
From: Marcus Müller [mailto:address@hidden 
Sent: 15 December 2015 17:44
To: Yan Huang; address@hidden
Subject: Re: [Discuss-gnuradio] using USRP to get scattering parameters

Hi Yan,

With the same antenna: That is going to be impossible, because you can't TX and 
RX on the same port with a USRP.
Also, the TX would be extremely loud and possibly even damage RX.

Calibration: Measure a known loopback channel (ie. a cable with an attenuator 
that you've measured with a Network Analyzer), and calibrate that way, or 
estimate loopback from your observation.

Best regards,
Marcus

On 15.12.2015 18:28, Yan Huang wrote:
> Hi Marcus,
>
> I want to analyse the wireless network in single channel with the same 
> antenna.
>
> And how can I calibrate the random phase offset with B210?
>
> Thanks,
> Yan
>
> -----Original Message-----
> From: address@hidden 
> [mailto:address@hidden On 
> Behalf Of Marcus Müller
> Sent: 15 December 2015 16:53
> To: address@hidden
> Subject: Re: [Discuss-gnuradio] using USRP to get scattering 
> parameters
>
> Hi Yan,
>
> that is an extremely broad question; what kind of network analyzer do you 
> have in mind?
>
> Notice that you will have to calibrate the B210 random TX/RX phase offset 
> after every tune.
>
> Best regards,
> Marcus
>
> On 15.12.2015 17:31, Yan Huang wrote:
>> I have tried to use USRP B210 and GNUradio to send and receive signal, and 
>> now I want to get the network's scattering parameters. But I don't know how 
>> to get them using the software.
>
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>
>
>
>
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This message and any attachment are intended solely for the addressee
and may contain confidential information. If you have received this
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Please do not use, copy or disclose the information contained in this
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author of this email do not necessarily reflect the views of the
University of Nottingham.

This message has been checked for viruses but the contents of an
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