The software-defined-radio tag has no wiki summary.
2
votes
1answer
72 views
Down-Conversion of RF signal
I have a basic question about down-conversion of RF-signals.
The ideal scenario is described as follows.
Given a RF-signal (coming from an antenna), i.e., a real-valued function x(t), and given a ...
0
votes
1answer
58 views
What are the LE (latch enable) and the CLK (serial Clock) pins on the TQM8M9077?
I'm new here, so bear with me. I'm working on a sdr board for a raspberry pi and I have selected the TQM8M9077 as my DVGA. While looking at its datasheet and I came upon a few questions. What are the ...
1
vote
1answer
62 views
Listening to Atmospheric noise
I want to pick up atmospheric noise at 7 MHz and multiply that up to 400 some odd MHz. The reason to do this is I have a USB receiver for digital television that I would like to open in windows and ...
3
votes
3answers
203 views
Can I/Q signals from two perpendicular antennas be simplified to any less than 4 signals?
Say I have two magnetic loop antennas oriented perpendicularly, such that one antenna has a null facing east/west, while the other has the null facing north/south. Each of these antennas is connected ...
1
vote
2answers
140 views
Two signals alternately on the left and right of a frequency
I was listening to the WebSDR of Twente University, just outside the amateur band, and saw these signals. The x axis is frequency in kilohertz, the y axis is time, where the whole axis shown is about ...
1
vote
0answers
71 views
Capturing Data Samples of a signal centered at 13.56 MHz using GNU Radio/Real time spectrum analyzer
I am working with NFC for my research and I have to intercept the communication signal at 13.56 MHz. I am supposed to take about 80,000-100,000 data samples (in time domain) for my Matlab routine for ...
2
votes
2answers
248 views
Why no 24 Bit Software Defined Radios?
I have researched and I understand why there are no 32 bit Analog to Digital converters; it is because basically when you go beyond 24 bit, you begin to pick up on the noise generated from the ...
0
votes
2answers
85 views
OOC coding in Wireless Radio Mesh Network
Can anyone explain me whether OOC (i.e. optical orthogonal coding) works in radio frequency? Or only for optical/laser technology?
0
votes
0answers
112 views
Connecting IP microwave radio link directly to SerDes
Is it possible to connect RF front end (low noise block) circuit of microwave/radio antenna directly to SerDes (serial transcivers like RocketIO in Xilinx)?
I am asking since SerDes has a Data Clock ...
10
votes
3answers
3k views
Can somebody explain what IQ (quadrature) means in terms of SDR?
This is a bit of a basic question, but I am having trouble understanding why a signal needs to be broken up into I and Q components to be useful for software-defined radio (SDR).
I understand that ...
3
votes
1answer
254 views
Implementation ideas for software defined radios
I find Software defined radios interesting, and was searching for ways to learn about it.
One way is getting your feet wet with devices like USRP products.
However, USRPs are rather expensive.
What ...
0
votes
1answer
2k views
Oscilloscope/Function Generator with GnuRadio (using very cheap hardware)
I was just getting started with RF signal processing, and I was very interested in being able to make an oscilloscope and function generator work in real time with python. Essentially, I would like ...
-1
votes
3answers
1k views
SFF SDR: How to implement a simply program in the FPGA
Although this a very specific question, I think someone of this site could give interesting information.
I am using a SFF SDR of Lyrtech
I am trying to generate a .bit file using a .vhd file and a ...
