A method for designing multi-screw waveguide tuners

An Automated Approach to Horn Antenna Impedance Matching and Manufacturing Using 3D Printing

“…In [13], numerical analyses were discussing the impact of the probe length, radius, and location within the waveguide adapter and the antenna was manufactured entirely by metal. In [14], [15] design optimization has been based on a parameter-tweaking approach, by tuning screws and posts. Because it is uncertain to connect a tuning post with the copper foil that is used to cover the surface of a 3D-printed antenna, such an approach is not the best choice for a 3D-printed structure.…”

Application of a non-ideal sliding short to two-port loss measurement

“…The reflectometer of figure 7 and figure 8 has the advantage of providing isolation of arm 4 from the reflected signal due to the sliding short at arm 2, which in turn reduces the amount of power leveling control necessary for the signal generator. Figure 8 shows the measurement system with associated When this condition exists the two-port efficiency must be measured in both directions and the two efficiencies averaged as described in Section 2.…”

“…4) The two-port is removed, and a sliding short connected in its place at terminal 2. In figure 4, the power meters shown in figure Moreover the extent of these losses will depend upon the short position.…”