Do negative frequencies count towards null-to-null bandwidth?

1. Does bandwidth include negative frequency?
2. What is null bandwidth?
3. What does negative bandwidth mean?
4. What does a negative angular frequency mean?

Does bandwidth include negative frequency?

Sometimes, bandwidth includes negative frequencies; other times, it doesn't. For example, if we're talking about a baseband signal, bandwidth might refer to a frequency range extending from 0 Hz to some (positive) frequency related to the baseband spectrum.

What is null bandwidth?

The null-bandwidth is defined as the amount of the frequency spectrum (in Hz) from the maximum. magnitude (which here occurs at 0 Hz) to where the frequency spectrum first goes to a magnitude of 0 (called a null).

What does negative bandwidth mean?

The idea of personal bandwidth encompasses the twin variables of time and attention. To go into the negative bandwidth territory is to say that all our time and attention is now fully allocated. Anything new requires sacrifices in areas we previously reserved for nonwork time and attention.

What does a negative angular frequency mean?

(This makes sense because the units of frequency are expressed in cycles, degrees, or radians per second). Hence a positive frequency (+ω) means that phase is increasing with time, while a negative frequency (−ω) implies that phase is decreasing with time.