Re: phase difference between Tx/Rx1 Tx/Rx2

2020-10-13 Thread Marcus D. Leech
On 10/12/2020 11:32 PM, Xiang Ma wrote: Think about this. The signal transmitted at USRP TX is image.png Then after transmission, received at USRP RX is image.png Here, ignore the Doppler shift, and just consider the phase change due to the transmission distance, I know due to the wavelength,

Re: phase difference between Tx/Rx1 Tx/Rx2

2020-10-12 Thread Xiang Ma
Think about this. The signal transmitted at USRP TX is [image: image.png] Then after transmission, received at USRP RX is [image: image.png] Here, ignore the Doppler shift, and just consider the phase change due to the transmission distance, I know due to the wavelength, the phase received might

Re: phase difference between Tx/Rx1 Tx/Rx2

2020-10-07 Thread Marcus D. Leech
On 10/07/2020 07:13 PM, Xiang Ma wrote: Should the TX be the signal before it been received and after it been transmitted? Thx The phase of the TX signal, as seen at the RX will be some function of the propagation delay between the two, and the initial phase at the TX. That's basic concep

Re: phase difference between Tx/Rx1 Tx/Rx2

2020-10-07 Thread Xiang Ma
Should the TX be the signal before it been received and after it been transmitted? Thx On Wed, Oct 7, 2020, 4:54 PM Marcus D. Leech wrote: > On 10/07/2020 06:49 PM, Xiang Ma wrote: > > Thank you. I have read this, > > it only shows the phase difference between two RX, how about the phase > > d

Re: phase difference between Tx/Rx1 Tx/Rx2

2020-10-07 Thread Marcus D. Leech
On 10/07/2020 06:49 PM, Xiang Ma wrote: Thank you. I have read this, it only shows the phase difference between two RX, how about the phase difference between TX and RX? Thank you. Well, given that the only "view" you have of TX is after it has been received, and before it has been transmitt

Re: phase difference between Tx/Rx1 Tx/Rx2

2020-10-07 Thread Xiang Ma
Thank you. I have read this, it only shows the phase difference between two RX, how about the phase difference between TX and RX? Thank you. On Wed, Oct 7, 2020 at 4:31 PM Marcus D Leech wrote: > Google is your friend. > > > https://www.egr.msu.edu/classes/ece480/capstone/spring14/group02/docs/

Re: phase difference between Tx/Rx1 Tx/Rx2

2020-10-07 Thread Marcus D Leech
Google is your friend. https://www.egr.msu.edu/classes/ece480/capstone/spring14/group02/docs/Application%20Note%20-%20Phase%20George%20Godby%20Team%202.pdf Sent from my iPhone > On Oct 7, 2020, at 6:19 PM, Xiang Ma wrote: > >  > Does anyone help with this? > > Great thx. > >> On Tue, Oct 6

Re: phase difference between Tx/Rx1 Tx/Rx2

2020-10-07 Thread Xiang Ma
Does anyone help with this? Great thx. On Tue, Oct 6, 2020 at 5:19 PM Xiang Ma wrote: > Hi, > > I have a USRP x310 and 2 UBX daughterboard. I'd like to send a signal > using RFA TX/RX port, and receive the signal from RFA RX2 and RFB RX2 port. > I am interested to get the phase difference b

phase difference between Tx/Rx1 Tx/Rx2

2020-10-06 Thread Xiang Ma
Hi, I have a USRP x310 and 2 UBX daughterboard. I'd like to send a signal using RFA TX/RX port, and receive the signal from RFA RX2 and RFB RX2 port. I am interested to get the phase difference between the RFA TX/RX and RFA RX2, RFA TX/RX and RFB RX2, how to do that? Is any grc block that I