Hello everyone,<\/p>\n
Recently I have been trying to understand how to simulate and quantify the coupling of a free space beam onto a planar antenna on top of a sillicon substrate. The geometry that I am using is the one presented in the image below.<\/p>\n
The antenna consists of a double dipole antenna designed to work on the 220 GHz to 330 GHz range, connected to a quarter wave resonator based (resonance frequency = 275 GHz) on a coplanar stripline transmission line design. This structure is placed on top of a 700 micrometer thick Si substrate as shown in the image below, <\/p>\n
My questions are regarding how to setup the simulation such that i can have an idea if a free space beam can couple to the antenna, this beam is in later stages to be considered a gaussian beam but for simplicity sake can now be considered a plane wave. My idea was to have two ports, at the top and at the bottom of the geometry, as shown in the image bellow, <\/p>\n
where I could excite P1 using a plane wave excitation and by analysing S11 and S21 plots i would be able to understand if part of the signal coupled to the antenna+resonator if there was a ressonance peak on S11 or S21 plots around the frequency that the resonator was design for. However I am struggling to realize how to do this in HFSS because a plane wave excitation cannot be considered a port and I also think that a wave port is not the correct implementation here…<\/p>\n
If more information is required I will be more than happy to provide it to you!<\/p>\n
Thanks in advance! <\/p>\n","protected":false},"template":"","class_list":["post-462217","topic","type-topic","status-publish","hentry","topic-tag-simulation-2"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t