Summary:
One of the sixth order PSN (Phase Shift Network)'s has been optimized.
It has the following characteristics: the 6th order, 90 plus minus 0.750
degrees,
and fh/fl = 44.17766746. The fh/fl is a ratio of the highest to the lowest
in frequency
where phase differece of the psn is maintained within 90 plus minus 0.750
degrees.
The undesired sideband suppression ratio is -43.7 dB at each of the frequencies
with the maximum phase deviation of 0.750 degrees from 90 degrees between
fh and fl.
The average suppression of the undesired sideband over the bandwidth of
modulating frequencies
between fh and fl is 6.4 dB better than the suppression at each of the
above frequencies.
Table 1.
Nr | Phase Deviation from 90 degrees |
Normalized Frequency | Example 1. Frequency in Hz |
1 | -0.750 | fl = 0.1504522230 | Fl = fl*F0 = 90.27 |
2 | 0.000 | 0.1646530906 | 98.79 |
3 | +0.750 | 0.2099292534 | 126.0 |
4 | 0.000 | 0.2947908841 | 176.9 |
5 | -0.750 | 0.4351162990 | 261.1 |
6 | 0.000 | 0.6568709219 | 394.1 |
7 | +0.750 | 1.000000000 | F0 = 600.0 |
8 | 0.000 | 1.522369109 | 913.4 |
9 | -0.750 | 2.298236132 | 1379 |
10 | 0.000 | 3.392235153 | 2035 |
11 | +0.750 | 4.763509535 | 2858 |
12 | 0.000 | 6.073375217 | 3644 |
13 | -0.750 | fh = 6.646628278 | Fh = fh*F0 = 3988 |