Re: [Discuss-gnuradio] sending sine wave, but created another unwanted frequency component

Hi Jeff, I tried to reduced the gain and the second component became weaker, but it is always there. If this is alias, I am wondering if I choose the wrong tx sampling rate. In this case, the sine wave frequency = 2.4e6, current tx sampling rate = 5e6. I tried to increase sampling rate from 5e6

Re: [Discuss-gnuradio] sending sine wave, but created another unwanted frequency component

Hi D J, Thanks for the link, this is alias. If I fix the waveform frequency, say 2.4e6, and increase tx sampling rate from 5e6 to 10e6, this problem should be solved right? I just did experiment, and found the second component disappeared. Thanks, Yang On Mon, Jan 22, 2018 at 9:39 AM, D J

Re: [Discuss-gnuradio] sending sine wave, but created another unwanted frequency component

What he said^^ https://en.wikipedia.org/wiki/Nyquist_frequency On Sun, Jan 21, 2018 at 12:18 PM, Jeff Long wrote: > Try reducing the RX filter bandwidth, the gain of the receiver and/or > transmitter, or moving the TX and RX apart, and see what happens. This is > aliasing,

Re: [Discuss-gnuradio] sending sine wave, but created another unwanted frequency component

Try reducing the RX filter bandwidth, the gain of the receiver and/or transmitter, or moving the TX and RX apart, and see what happens. This is aliasing, and probably has nothing to do with software. On Sun, Jan 21, 2018 at 12:56 PM, Yang Liu wrote: > Dear all, > > In

[Discuss-gnuradio] sending sine wave, but created another unwanted frequency component

Dear all, In this application, I am trying to send a sine wave at a specific frequency to usrp x310: sine wave generator ---> usrpx310 For the sine wave generator, I use blocks.sig_source_c from gnuradio. The parameters at the transmitter are in the following: center frequency: 1e9 (usrp