Re: [Meep-discuss] Question about setting the current source

2009-09-22 Thread Roy Zhang
(I don't see my reply posted, so I'm posting it again. I'm sorry if this mail is duplicated.) Hi Steven, Thanks a lot for helping me find out a big mistake I made - that is, I was confused by the defination of current in MEEP, which is totally different from that in driving circuit. So here co

Re: [Meep-discuss] Question about setting the current source

2009-09-22 Thread Roy Zhang
Hi Steven, Thanks a lot for helping me find out a big mistake I made - that is, I was confused by the defination of current in MEEP, which is totally different from that in driving circuit. So here comes another question. I notice that in other FDTD softwares such as XFDTD and SEMCAD, source

Re: [Meep-discuss] Question about setting the current source

2009-09-16 Thread Steven G. Johnson
The current in Meep is added directly as a specified free current J in Maxwell's equations (see Maxwell's equations in the Meep intro). Meep does not simulate the driving force behind this free current, nor does the current have to be placed in a conductor. Specifying a current means that

[Meep-discuss] Question about setting the current source

2009-09-15 Thread Roy Zhang
Hello everyone, I'm trying to set a current source and find there's no parameter to describe the resistance(50 ohm, normally) in the feeding point, which is frequently used in EM emission system. That's quite strange. Can you tell me why? Your earliest reply will be greatly appretiated. Best