Insertion Loss
Insertion loss is the difference in power between the input signal and the output signal above the theoretical split loss.
Amplitude Balance
The maximum difference in power level between any two output signals.
Phase Balance
The maximum phase difference in degrees between any two output signals.
Isolation
The
isolation is used to define the amount of output port to port
crosstalk. It is the level of attenuation of a signal injected into an
output port as seen at any other output port with the input terminated
in 50 ohms.
VSWR
The
VSWR (Voltage Standing Wave Ratio) at any given port (with all other
ports terminated) defines the degree of mismatch between the input
signal and the input port and thus is a measure of the loss of input
signal at that port.
Theoretical Splitting Loss
The
table on the following page lists the theoretical insertion loss, or
theoretical difference between the input level of a power divider.
Power divider
A 0° power divider splits an input signal into two or more output signals which are theoretically equal in both amplitude and phase. AMD-GROUP offers a complete line of these 0° dividers. Readily available are 2, 3, 4, 6, 8, 10, 12, 16 & 32-way splits which cover various frequency bands up to 18 GHz.
Power dividers can also be used as power combiners. However, input signals which are to be combined must be of equal phase & amplitude and the sum port must be well matched to receive optimum performance. Deviations in phase or amplitude of the input signals will result in an increase in loss while a bad match on the sum port will decrease port to port isolation as well as increase loss.
| Number of output | Theorical insertion Loss dB |
2 | 3 |
3 | 4.8 |
4 | 6 |
6 | 7.8 |
8 | 9 |
12 | 10.8 |
16 | 12 |
32 | 15 |