Further Reduction Broadband Matching

We demonstrated above that the backscatter is proportional to the reflection coefficient r. The array was matched at 10 GHz. At other frequencies F was larger, resulting in a stronger scattering from the individual triads. 

Bistatic Field from Triad 25. Angle of Incidence = -30° 

by better matching at all frequencies the backscatter could be further reduced. In other words we need to add a carefully designed matching network at the terminals of all the dipole elements. This network can be designed to be identical for all the typical triads since the array can be made free from jitter as seen earlier. 

The active input impedance for triad 25 is shown in Fig. 5.36, bottom. It will be observed that the VSWR is 1.02 at 10GHz. In Fig. 5.36, top, we observe 

---