2 dB, which helps to reduce the mismatch loss
between a 50 [OMEGA] antenna and output of PA.
Figure 4 shows the composite network's insertion loss, which illustrates the effect of mismatch loss
(3 dB at 26 GHz) on throughput performance, and the input/output impedance match interaction between ports (5 dB at 26 GHz).
Confronted with these conditions, designers have accepted the resulting IF mismatch loss
and utilized nonoptimum impedances for stability control.
3] However, the spiral antenna will exhibit a 3 dB polarization mismatch loss
when coupling to a linearly polarized wave.