Natalie Johnson's user avatar
Natalie Johnson's user avatar
Natalie Johnson's user avatar
Natalie Johnson
  • Member for 5 years, 10 months
  • Last seen more than 2 years ago
5 votes
3 answers
1k views

Digital to analog aliasing or mirror query... DAC can output negative frequency?

4 votes
2 answers
127 views

Digital Equations problem - The fundamental ones that everyone should know

3 votes
1 answer
8k views

Spectrum of Cosine in Complex Form

3 votes
3 answers
3k views

How the FFT takes a cosine or sine and outputs the frequencies of the complex form?

3 votes
1 answer
866 views

Discrete Harmonics - Why multiplying digital frequency by k does not get next harmonic

2 votes
0 answers
740 views

Welch Method FFT Python - Scaling factor?

1 vote
2 answers
569 views

Adding phase to a signal that has multiple frequencies

1 vote
1 answer
44 views

Sampling Frequency and Spectral Regrowth

1 vote
3 answers
412 views

Why only odd harmonics after non-linear amplification?

1 vote
0 answers
79 views

Discrete Frequency Equation and Relation

1 vote
2 answers
1k views

IQ Sampling and Oversampling Differences? *Confused*

1 vote
2 answers
1k views

Confused on Pulse Filter Bandwidth and Symbol Rate Relation

1 vote
1 answer
333 views

Setting up RRC filter and useful equations

1 vote
4 answers
1k views

What is the correct gain of an RRC Filter?

0 votes
1 answer
369 views

Calculating SNR & Es/No and placing noise onto a signal

0 votes
1 answer
2k views

Energy per symbol calculation

0 votes
1 answer
116 views

LowPass Filter & Window *Img & Code* - Frequency Response has no lobe roll off

0 votes
1 answer
259 views

Blackman-Tukey Autopower equation

0 votes
1 answer
206 views

Cosine of amplitude 1 but GNU Radio shows FFT has amplitude > 30,000

0 votes
1 answer
394 views

Get I and Q components from a signal (multple frequency signal)?

0 votes
4 answers
3k views

Nyquist Theorem - Why unique frequencies upto Fs/2 and not Fs? f+Fs is start of Aliasing

0 votes
2 answers
1k views

Why complex signal has no imaginary spectrum

0 votes
1 answer
3k views

Amplify a signal and phase shift it by multiplying by a complex number

-1 votes
1 answer
99 views

SDR Dongle, 2MHz Bandwidth related to Fs but bandwidth range 50-2000 MHz