[Meep-discuss] (no subject)

Hello, I met a problem during calcluating the transmission spectrum of 3D PC using me ep.The band gap is about 10.9GHz ～16GHz. When I set fcen (the central frequency ) as 11GHz and 12GHz and set df as 0.1, I can obtain a covergent solution. But w hen I increase fcen to 13GHz, 14GHz, and 15GHz,

[Meep-discuss] reasons for divergence

Hello, I met a problem during calcluating the transmission spectrum of 3D PC using me ep.The band gap is about 10.9GHz ～16GHz. When I set fcen (the central frequency ) as 11GHz and 12GHz and set df as 0.1, I can obtain a covergent solution. But w hen I increase fcen to 13GHz, 14GHz, and 15GHz,