On 04/19/2011 05:26 PM, Colby Boyer wrote:
> Basically, if possible use the same LO, or lock the two LO's together.
>
> Going back to the original question: is locking the LOs for an RX card
> and a TX card on a USRP1 feasible?
>
Yes, it is possible to lock them together.
Matt
___
SNR between using same LO's
> vs separate LO's
>
> Best regards,
> -Vijay
>
> --- On *Tue, 4/19/11, Colby Boyer * wrote:
>
>
> From: Colby Boyer
> Subject: Re: [Discuss-gnuradio] Odd use of LO phase lock feature on USRP
> for RFID application
> To:
11, Colby Boyer wrote:
From: Colby Boyer
Subject: Re: [Discuss-gnuradio] Odd use of LO phase lock feature on USRP for
RFID application
To: i...@agile-sdr-solutions.com
Cc: "Matt Ettus" , "GNU Radio Discussion"
Date: Tuesday, April 19, 2011, 5:00 PM
The two boards should hav
On Tue, 19 Apr 2011 14:00:01 -0700, Colby Boyer wrote:
The two
boards should have different clocks, so there should be some frequency
offset. Even in typical SISO systems, you use a PLL block to deal with
this since you can't access the other LO because its physically
somewhere else.
While
The two boards should have different clocks, so there should be some
frequency offset. Even in typical SISO systems, you use a PLL block to deal
with this since you can't access the other LO because its physically
somewhere else.
While receiving, the transmitter is still running at full power to r
On Tue, 19 Apr 2011 11:41:46 -0700, Matt Ettus wrote:
> On 04/19/2011 11:38 AM, Colby Boyer wrote:
>> Hi All,
>>
>> In RFID applications, a reader receives (backscatter from RFID tag) and
>> transmits (constant tone) at the same frequency. With commercial
>> readers, a single LO will be shared by
On 04/19/2011 11:38 AM, Colby Boyer wrote:
> Hi All,
>
> In RFID applications, a reader receives (backscatter from RFID tag) and
> transmits (constant tone) at the same frequency. With commercial
> readers, a single LO will be shared by the RX and TX chain. However, in
> the USRP case, two separat
Hi All,
In RFID applications, a reader receives (backscatter from RFID tag) and
transmits (constant tone) at the same frequency. With commercial readers, a
single LO will be shared by the RX and TX chain. However, in the USRP case,
two separate daughter boards are used so different LOs are in use
