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ADS Momentum: Fundamental Questions

Question asked by germatron on Jul 9, 2008
Latest reply on Jul 10, 2008 by ALEPEREZ
Hello,

Please to meet you guys. I am a newbie RF Engineer assigned to work on 802.15.4 wireless devices. I just have a few fill-in-the-blank questions regarding momentum.

Below is a link to my first set of questions:

link

I also would like to know exactly how do I place my soldermask onto my board? In the entry layer box, there lists a soldermask option. When I click on it, and draw a polygon, where does the solder mask go?

My question is:

1: Suppose I have cond 1 and cond 2 layers. Does the soldermask cover cond 1 or cond 2 or both?

2: How do I draw the soldermask? Do I just extend a rectangle over my cond layer?

3: I tried listing my soldermask in my substrate definition. When I go to the metallization tab, i can map one solder mask layer as a strip/slot/via but not the other.

Is it better to list my soldermask as a substrate layer, map it as a strip or just draw it in layout?

I am designing a stacked patch antenna. the soldermask placed on the radiators during fab/production time is critical in my desing since the dielectric coating detunes my device.

Any help will be greatly appreciated.

Thanks.  

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