q is the largest integer that is a characteristic exponent of the function 
k(u) = (=) = wy(r), and the value of q is listed in Table 2.2 for each representative 
spectrum window. When gq = 2, as is the case for most of the listed spectral windows, 
there is a relationship 
e/a 
b(w) is on the order of 55") | ¢°Woh)db 
1 
is on the order of aye | ex@do, @alay7) 
where 1 
K@) == | k(uje@"du 
—-c 
or k(u) = | K(@)e?“do. 
To state the relative bandwidth of the spectral windows, we must define the bandwidth B, 
of the spectrum itself. Usually, B; = w2—w, where w2andq@, are the frequency points at 
which the spectrum shows half the maximum power of the spectrum peak as in Fig. 2.20. 
Fig. 2.20. Spectrum bandwidth. 
