Hello,
I managed to get the waveform! Was due some misconfigurations with the RBW and VBW on the Spectrum Analyzer.
However, may I know why is the waveform bandwidth reduced by a lot. I tried to send a chirp with a bandwidth of 1MHz but when I transmit out, I got 50kHz of BW. Is it due to some loss when transmitting?
Thank you in advanced!
From:
Discuss-gnuradio [mailto:discuss-gnuradio-bounces+address@hidden
On Behalf Of Ron Economos
Sent: Wednesday, 9 May 2018 3:28 PM
To: address@hidden
Subject: Re: [Discuss-gnuradio] USRP Output to Spectrum Analyzer
Here's what I get from the flow graph below.
Ron
On 05/08/2018 10:28 PM, Yeo Jin Kuang Alvin (IA) wrote:
Hi all,
Theoretically, in frequency domain, the spectrum for SQUARE wave should be a SINC and for the spectrum of RAMP wave should be decreasing with every odd harmonics. A question that I want to ask is, will I get to see these frequency spectrum in the Spectrum Analyzer after being transmitted out from the USRP B210? As I have tried to send a Square and a Ramp wave using GNU Radio Companion, I see the waveform I want in GNU Radio plot, but I don’t see any nice expected waveforms in the Spectrum Analyzer.
Is it because of the IQ Modulation in the AD9361 of the USRP B210 that causes me not seeing the expected results? Or is it because of some configurations not done properly? Hope to get a reply soon!
Thank you in advance!