resonate frequency in cavity with loss material

Status
Not open for further replies.
B

bin123

Newbie level 4
Joined
Oct 29, 2016
Messages
7
Helped
0
Reputation
0
Reaction score
0
Trophy points
1
Activity points
50
hello every one, i am simulating a cavity in HFSS but a strange thing happened in the result.
firstly i simulate a cavity with lossless material which the magnetic loss set to 0 and the frequency is 3.18MHz which is my expectation, but when i set the magnetic loss to 1.8 which are confirmed with fact while the frequency changed a lot to 1.0MHz. i was wondering if you know why this happened, thank you for your help
 

Hi,
For all i know, the quality factor of a cavity is a function of the loss. And an ideal cavity without loss gives modal solutions different from a real cavity (see Maxwell equations which give : Laplacien(E) + k² E = 0 where k is a function of material values and gives rise to the eigen value of the cavity problem or the eigen frequency). As i can see your magnetic loss are high. I think that it's the explanation for the difference between the frequencies.

Bye.
 
Reactions: bin123

    B

    bin123

    Points: 2
    Helpful Answer Positive Rating
Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…