Scale Model Measurements and Simulations
Scale Model with an Er=4.0 (Quartz) Substrate
HFSS and scalemodel measurements overlaid
Copper ground extending to the Fullheight Waveguide Wall
Probe Impedance (Smith Chart)
Return Loss (dBS11) of radial probe
Maximum Extend of E-field on the groundplane that extends to the WG Wall
Effect of adding a 2-Section RF Choke
Probe Impedance (Smith Chart), note large shift in Probe impedance!
Return Loss (dBS11) of radial probe
Maximum extend of E-field with a 4-section RF Choke
Minimum extend of E-field with a 4-section RF Choke
Usefull Information
Probe impedance from 3-1000 GHz. Below 170 GHz (IF) the WG is in cutoff, and the probe acts like a capacitor.
Above 430 GHz the probe impedance remains reasonably well behaved and stays > 75 Ω.
E-field inside the Fullheight waveguide with backshort in place.
Comparison between a 2-Section and 4-Section RF Choke.
