Here is an article that discusses using this technique in a radio:
http://img.cmpnet.com/commsdesign/csd/2002/oct02/eamon-fig3.jpg
Here is a graphic that shows the various images that are present in the
spectrum.
http://img.cmpnet.com/commsdesign/csd/2002/oct02/eamon-fig3.jpg
This is not a cl
[EMAIL PROTECTED] wrote:
The same does apply to a DAC as well as an ADC. They are both sampling
systems. A DAC typically has a low pass filter to cut all the alias
images. But you can also bandpass filter those images to produce the
desired signal. The system is very linear and isn't a mix
Thank you all for your comments.
I try to know in which other frecuancies can I TX when run the fm_tx4.py in my USRP with the BASIC TX, that because I´ve no access to a spectrum analyzer, and would be greate if you can help me with this.
And I want to know the default sample-rate in the fm_tx4.py f
Robert McGwier wrote:
> Thanks for all the comments but I still have my doubts. I am more like
> to believe in clock leakage and DAC nonlinearities causing this than I
> am with square wave harmonic activity. I will investigate further with
> the spec-an if I have time.
>
When the aliasing happ
Thanks for all the comments but I still have my doubts. I am more like
to believe in clock leakage and DAC nonlinearities causing this than I
am with square wave harmonic activity. I will investigate further with
the spec-an if I have time.
The pico-board looks great. I recently acquired the
Thanksyo all for your comments.
I try to know in which other frecuancies can I TX when run the fm_tx4.py, that because I´ve no access to a spectrum analyzer, and would be greate if you can help me with this.
And I want to know the default sample-rate in the fm_tx4.py file.
Thanks
Jorge Chávez
The same does apply to a DAC as well as an ADC. They are both sampling
systems. A DAC typically has a low pass filter to cut all the alias
images. But you can also bandpass filter those images to produce the
desired signal. The system is very linear and isn't a mixer.
Here is my original po
Bob -
On Sat, Oct 01, 2005 at 02:56:26PM +, Robert McGwier wrote:
>
> The paper you included and the mathematical and electrical phenomenon
> you are talking about applies to the analog to digital converter, the
> receiver only. [chop]
>
> You cannot do the reverse on transmit. It is a "
Jorge:
The paper you included and the mathematical and electrical phenomenon
you are talking about applies to the analog to digital converter, the
receiver only. This is undersampling as you call it. Most engineers
call it bandpass sampling. It applies to the use of aliasing to bring a
hig
If I run the fm_tx4.py, I TX in 29.3MHz and?? Which other frecuencies??, Which one is the frecuency of the Sample Rate??
Please Help me, and sorry for my english
On Fri, Sep 30, 2005 at 10:47:47AM -0500, Jorge Chávez wrote:> I'm trying to FM TX with the fm_tx4.py but it doesn work for comercial
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