Simulating antenna width limit on spin wave excitation

[anirban.m...@gmail.com]

Dear MuMax3 community,

A micro-stripline antenna with a width W can excite wavenumbers up to 2π/W. I want to simulate antenna width limitation for MSSWs.

Now, if I have a YIG film of 10 μm x 100 nm x 1 μm:

Nx := 1000
Ny := 10
Nz := 100 

setgridsize(Nx, Ny, Nz)
setcellsize(10e-9, 10e-9, 10e-9)

Msat = 138.46e03
alpha = 0.001
Aex = 3.6e-12 

Now, if I set a rectangular excitation region of 100 nm x 100 nm x 1 μm:

B_ext = 4e-07 * pi * 25e03
fc := 12e9
exc_reg := rect(100e-9, 100e-9)
defRegion(100, exc_reg)
B_ext.SetRegion(100, vector(0,  B0*sinc(2*pi*fc*t), 0)) 

If I set up my simulation in this manner, will I be able to observe the MSSW frequency up to 9 GHz?

I am new to MuMax3, and I would appreciate any suggestions or guidance the community may have regarding my question.