{"id":29176,"date":"2018-04-26T19:00:34","date_gmt":"2018-04-26T19:00:34","guid":{"rendered":"\/forum\/forums\/topic\/problem-in-simulating-a-simple-parallel-plate-waveguide-in-hfss\/"},"modified":"2018-04-26T19:00:34","modified_gmt":"2018-04-26T19:00:34","slug":"problem-in-simulating-a-simple-parallel-plate-waveguide-in-hfss","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/problem-in-simulating-a-simple-parallel-plate-waveguide-in-hfss\/","title":{"rendered":"Problem in simulating a simple parallel plate waveguide in HFSS"},"content":{"rendered":"

Hi Everyone,<\/p>\n

<\/p>\n

I am having some problems in simulating simple parallel plate waveguide in HFSS. I will appreciate if you can suggest some solutions.<\/p>\n

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I tried making the parallel plate waveguide (whose cut off frequency is 10 GHz) in two ways:-<\/p>\n

<\/p>\n

1) I choose a box and choose dimensions are such that the cut off frequency of waveguide is 10GHz. I assigned perfect electric boundary to both top and bottom plate and PML( Perfectly marched layer) boundary to other two sides, because I read that it is used to emulate a perfect absorber. On the other two sides, I assigned wave port( tried with and without defining the integration line)<\/p>\n

<\/p>\n

\"Geometry<\/p>\n

<\/p>\n

2) Second, case is similar to the first one but instead of assigning Perfect Electric boundaries to top and bottom sides of the box, I built small layer of PEC on top of them (the thickness is very small)<\/p>\n

<\/p>\n

\"\"<\/p>\n

<\/p>\n

Problem:- After I run the simulation, I don’t obtain the surface currents on the bottom plate as I expect.They should be constant and not sinusoidal. <\/p>\n

<\/p>\n

My Preception : The structure is correct, the problem has something to do with the excitation. <\/p>\n

<\/p>\n

Actually, I have worked with only lumped ports before, this is the first time I am dealing with the wave port.<\/p>\n

<\/p>\n

I am attaching the magnitude plot of surface current and Complex magnitude plot of surface current.<\/p>\n

<\/p>\n

\"Magnitude_<\/p>\n

<\/p>\n

\"Complex<\/p>\n

<\/p>\n

 <\/p>\n

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I will appreciate if you could help me with this.<\/p>\n

<\/p>\n

 <\/p>\n

<\/p>\n

Warm Regards<\/p>\n

<\/p>\n

Akshaj Arora<\/p>\n","protected":false},"template":"","class_list":["post-29176","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["1343"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":[null],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0","0","0","0","0"],"_btv_view_count":["658"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["29176"],"_bbp_forum_id":["27793"],"_bbp_engagement":["156873"],"_bbp_voice_count":["1"],"_bbp_reply_count":["0"],"_bbp_last_reply_id":["0"],"_bbp_last_active_id":["29176"],"_bbp_last_active_time":["2018-04-26 19:00:34"]},"test":"akshaj"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/29176","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/29176\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=29176"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}